PROLOG- pigeon neclace


ff pertama ku,,, abal-abal… terinspirasi ama home alone entah nomor berapa… pokonya yang dia temenan ama ibu” pengurus merpati… back to the ff,,, semoga kalian suka,,,

cekidot

________________________________________________________

#flashback

“kau benar-benar akan pergi?”tanya seorang namja kecil itu

“ne, kami semua akan berangkat.”yeoja kecil dihadapannya menjawab sambil tersenyum

“aku ingin menghabiskan beberapa hari lagi denganmu.” Ucap namja itu kecut

“gwaechana, kyu oppa. Kita kan masih bisa berhubungan lewat surat. Bahkan sekarang lebih canggih bukan? Kita bisa video call?” ujar yeoja itu menghibur namja bernama kyuhyun tersebut.

“hmm… ini. Bwalah kalung ini. Aku harap saat kita kembali bertemu, kau masih menggunakan kalung ini.” Kyuhyun melepas kalungnya. Kalung dengan liontin berbentuk burung merpati.

“tapi, ini kan kalung kesayangan oppa.” Sang yeoja mencoba menolak halus kalung kyuhyun.

“ani, bawalah.”kyuhyun memakaikan kalung itu pada yeoja itu.

“ya! Soohwa, cepat. Kita harus take off satu jam lagi” seorang namja dewasa meneriakkan nama yeoja itu dari bawah bukit.

“ne, oppa. Aneyong kyu oppa. Aku harap kita akan bertemu kembali.” Lalu yeoja itu berlari menuruni bukit.

“kajja. Aneyong, kyu. jagalah dirimu. Jangan bermain game terus.” Namja dewasa, yang juga oppanya yeoja bernama soohwa itu melambaikan tangannya. Kyuhyun membalas lambaian tangannya sambil berlari menuruni bukit. Ia melihat soohwa memasuki mobil.

“SOOHWA!!! HATI-HATI!!!” seru kyuhyun. Yeoja bernama soohwa itu hanya tersenyum sambil melambaikan tangannya. Tak terkecuali namja yang tadi menjemput soohwa

#flashback end

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keluarga tak tahu diuntung part 2


maaf ya chingu….
aku lagi kesel banget banget ama nih keluarga
tapi yang berulah cuma 2 orang…

anak cewek…
ac:kak bikinin peer
s:peer apa?
ac:b. inggris
s:oh, berapa halaman?
ac: 1 LKS*dengan muka tidak berdosa*

30 menit kemudian
ac: udh kak?
s: udh , nih..
ac:*diam aja gk blang makasih*

1 jam kemudian

treng…treng…#imajinasikan suara seng di pukul#
s: ma, apaan tuh? bising.. mau tidur nih
mm: bung …
s:suruh diam ma, nak tidur
mm: …
s: klo gk diam kami buang ke sungai suruh buayo makan dia nanti
mm:…
s: AISHHH… DIAM NJING,TAU GK?
mm: #plak. aku dipukul

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keluarga tak tahu diuntung


dasar la mak, bapak, anak samo be…

aku beberin faktanya…

pertama

anak pertama yg cewek:

-minta ajarin tiap hari

-manggil aku seenaknya

-nendang aku

-nyuruh aku

 

kedua, anak keduayg cowok

-nganggu aku nntn korea

-seenaknyo tidur di ranjang aku

-MPO

-pokoknyo bikin kesal.

 

mak:

-pengadu

-tiap saat ado be acara ngota dgn mam aku, aku jadi korbannyo.

-minjam barang, aku tukang cuci

 

bapak:

-oke lah dia berjasa ama mama aku, tapi dak usah segitunyo jugo.

-dak ado yang mau tetanggoan kau

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kesal


uh..

cpek banget..

sekolah, bikin peer , observasi, berantem…

full activity…

shit….

oke, observasi itu asik…

jalan”, kagak belajar…

tapi tugasnya itu sama aja kea 4 hari sekolah(alay)

mana objeknya bikin bosan…

siapa tau itu air sungai batang hari,bukan sumur bor????

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kyuhyun di kbs music award


yeoboku ini memang terkenal dengan kegantengan dan suaranya yang merdu.

kyuhyun ,dan super junior memang baru muncul di part 2.

duet dengan Shin Seunghun. aku lupa lagunya apa, tapi easy listening.

super junior,dengan bonamana muncul setelah SNSD

diawali dengan opening song oleh yeoboku,Yesung, Donghae, Eunhyuk, Leeteuk.

barulah Siwon, Heechul, Shindong, Sungmin, Ryeowook keluar disambut pekikan para sainganku…

setelah itu kyu ikut feat bersama DJ DOC dan After School…

so cute………

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kyuhyun fact


i now, kalian pasti udh liat di berbagai blog…

cma mw ngepost aja kok!

1. Kyuhyun berasal dari daerah distrik di Seoul yaitu Nowon.
2. Keluarganya terdiri dari mama, papa,dan kakak perempuan.
3. Lahir pada tanggal 3 Februari 1988.
4. Tingginya 180, dan beratnya 68. Golongan darah A.
5. Punya kakak perempuan bernama Cho Ara yang usianya 2 tahun lebih tua dari Kyuhyun.
6. Ayahnya bekerja sebagai chairman di sebuah asosiasi dan kakaknya kuliah di luar negri.
7. 조규현 merupakan Hangul untuk Cho Kyuhyun.
8. Kyuhyun beragama Kristen. Sewaktu berumur 8 tahun, dia pernah rekaman lagu gereja bersama kakaknya.
9. Waktu umurnya 16/17 tahun, Kyuhyun ikutan Buddy Star Contest dan menang juara 3.
10. Menjadi member SJ sejak 23 Mei 2006 di televisi. 24 Mei 2006 (official news article). 27 Mei 2006 (official debut, i-concert).
11. Kyuhyun punya sedikit gangguan di telinga kirinya karena infeksi sewaktu muda. Jadi telinga kirinya agak kurang pendengarannya.
12. Kyuhyun paling suka main game. Ternyata dia udah main game sejak kelas 3 Sd. Setelah pulang sekolah, Oppa buru-buru ke rumah supaya bisa cepat main game. Kalo ada temannya yang ngajak main keluar, Kyuhyun dengan sopan menjawab “tidak” atau Kyuhyun bilang kalo dia gak dikasih uang jajan *hehehehe*
13. Kyuhyun mempunyai lebih dari 50 julukan nama. Karena banyak, Leeteuk Oppa pernah nanyak nama apa yang paling Kyuhyun suka diantara banyaknya julukan. Dia bilang paling suka nama “Gamekyu”
14. Tapi Kyuhyun pernah bilang kalo dia nggak mau kalo orang ngolok-ngolok dengan sebutan Gamekyu. Soalnya orang tuanya pernah ngomel.
a. “Kyuhyun, kenapa kamu selalu main game setiap hari ?? kamu sudah besar Kyuhyun. Apa yang akan terjadi kalau kerjaanmu hanya bermain game terus ?? pikirkan masa depanmu !!.
b. Akhirnya karena perkataan dari ortunya itu, Kyuhyun sempat berhenti main game. Dan beralih hobi menjadi menonton film. Pernah dia bilang,”Akhir-akhir ini aku sering nonton film, mungkin suatu saat aku bisa jadi seorang aktor”. Gara-gara hobinya nonton film, dia sampe dijuluki “Drakyu” oleh Leeteuk.
15. Sampe sekarang Kyuhyun masih aja tuh main game. Kalo udah main game dia suka lupa waktu. Malem-malem setelah bekerja, Kyuhyun akan terlihat segar kembali kalau udah main game. Zhou Mi sampe iri.
16. Donghae sering terbangun tengah malam karena dengar teriakannya Kyu. Pernah kyu teriak keras banget, sampe Donghae langsung bangun dan ngedatengin Kyuhyun lalu bertanya ada apa. Dia hanya menjawab ,”gak ada apa-apa. Aku baru saja kalah main game”.*wahaha*
17. Game favoritenya Kyu yaitu starcraft dan game lainnya seperti Thousand Years, Diablo, Sudden Attack. Kyuhyun pernah bilang waktu interview di radio, jika seandainya dia gak jadi penyanyi dia akan jadi Gamer yang profesional. Kyuhyun juga pernah bilang kalau “ Game bisa membuatnya Relax .”
18. Selain game dan nonton, Kyuhyun juga suka baca Novel.
19. Kyuhyun rela kurang tidur demi main game. Kyuhyun pernah satu kali berhenti main game. Soalnya waktu itu keyboard Kyuhyun hilang. Ternyata keyboard itu rusak dan disembunyikan oleh Ryeowook.
20. Kyuhyun kuliah di Kyunghee jurusan Modern Music. Padahal ortunya pengen dia masuk Hakwon.
21. Kyuhyun sangat suka salju. dia pemain ski yang baik. Sehingga dia punya julukan “Skykyu”
22. Paling nggak bisa masak, pernah sekali waktu masakin ramen buat para hyung nya, tapi karena kebanyakan air, ramennya jadi lembek, semenjak saat itu para hyung tidak mengizinkan Kyu pergi ke dapur buat masak.
23. Kangin sampai bingung mau mengajarkan apa pada Kyu, karena dia pernah salah memasukkan minyak saat memasak ham yang sederhana.
24. Karena gak bisa masak, anggota Suju yang lain menyebut ramen Kyuhyun sebagai Legenda Sungai Han gara-gara kebanyakan air. Tapi kata Kangin, sebenernya masakan Kyuhyun itu enak kalau Kyuhyun masak buat dirinya sendiri aja.
25. Kyuhyun gak suka milih-milih makanan. Tapi dia gak suka sama sayur-sayuran.
26. Kyuhyun ternyata kena pneumothorax, bukan karena kecelakaan. Dia pada saat kuliah emang sakit pneumothorax.

27. Kyuhyun dekat dengan Sungmin. Mungkin berawal waktu mereka main di mini drama MNET, mereka juga pernah maen di KBS love family. Mereka berdua disuruh ngasuh anak-anak. Mereka ini juga masak untuk anak-anak itu, karena Kyuhyun gak bisa masak, jadinya Sungmin yang masak. Kyuhyun juga gendong anak kecilnya dengan takut-takut. Sedangkan Sungmin emang jagonya dengan hal ini.

28. Sewaktu ikut KBS love family bersama Sungmin. Kyuhyun menampilkan suara yang menyeramkan lewat piano. Tapi ternyata anak-anak bukannya pada takut malah ketawa. Melihat itu, kyuhyun langsung menutup wajahnya dengan kedua tangannya karna malu.
29. Kyuhyun ternyata juga sangat mengagumi Mickey, Yoochun TVXQ.
30. Pernah memperkenalkan diri dengan cara seperti ini
a. “Annyeong Haseyo, Saya Kyuhyun dengan umur dibawah rata-rata member Super Junior”. Karena perkataannya itu, otomatis orang yang ada di studio ketawa.
b. Terus di SBS Intimate Note, dia cuma ngomong “Kyuhyun imnida” selama beberapa puluh menit di awal acara. Di Intimate Note, Kim Gura nanya dimana Kyuhyun tinggal, Kyuhyun hanya menjawab “Kyuhyun imnida”.
31. Kyuhyun susah banget dilawan.
32. Kyuhyun sangat pandai bermain clarinet. Dia bisa main clarinet sejak kelas 3 SMA. Dia juga bisa main piano. Di “Boys in the city” Kyuhyun bilang kalo dia ingin belajar main saxophone.
33. Kalung HP milik kyuhyun adalah pemberian dari Yesung Oppa.
34. Favourite Taeyeon di Member Suju adalah Kyuhyun.
35. Pernah mengalami kecelakaan pada bulan April 2007 bersama Eunhyuk, Shiwon, Shindong dan harus dirawat dirumah sakit dan vakum dari Super Junior selama beberapa bulan. Kyuhyun mengalami luka yang parah. dia duduk disebelah supir.
36. Lee Soo Man pernah membatalkan jadwalnya untuk mengunjungi USA, itu karena dia ingin menjenguk Kyuhyun di rumah sakit setelah kecelakaan.
37. Kyuhyun sayang banget dengan Heechul. Karena waktu ia di rawat di rumah sakit gara-gara kecelakaan, Heecullah orang yang selalu jenguk Kyuhyun tiap hari. Waktu Kyuhyun siuman, Heechul orang yang selalu nemenin dia di rumah sakit.
38. Waktu masih di college, Kyu itu rakus sehingga pipinya jadi chubby. Tapi setelah memulai debutnya, Kyuhyun jadi kurus seperti Eunhyuk dan kecelakaan yang menimpanya membuat berat badannya turun 20 kg.
39. Sejak kecelakaan, kondisi Kyuhyun naik turun, otomatis para Hyung memberikan perhatian yang lebih. Kyuhyun kerap sedikit berulah. Dia pernah pura-pura bilang gak enak badan, kalau sudah begitu para Hyung langsung panik. Kata Kyuhyun paling gak 6-10 orang nanya ke dia apakah Kyuhyun baik-baik saja ?? *usil ya*
40. Waktu baru masuk SM karena ruang terbatas di asrama, Kyuhyun gak punya tempat tidur. Dia tinggal di dalam tenda selama beberapa bulan. Para fans mengatakan mereka ingin membelikan tempat tidur untuk Kyuhyun. Ini membuat managernya kaget. Jadi mereka pergi untuk membeli tempat tidur. Merasa bangga dengan tempat tidur barunya, Kyu mengambil foto dari tempat tidur dan diposting di Internet. Walaupun begitu, Kata para Hyung, Kyuhyun sayang banget dengan tendanya yang dulu. Dia marah kalo tendanya dipegang apalagi dibuang.
41. Kyuhyun kurang bisa menyetir mobil atau motor.
42. Waktu Interview di Easy Magazine (2008), Kyuhyun bilang seandainya punya waktu luang yang panjang, dia akan melewati harinya dengan pergi ke luar angkasa.
43. Kyuhyun pernah bilang waktu di Interview, kalo dia ingin terjun ke Hollywood.
44. Memenangkan olimpiade matematika dan meraih medali emas.
45. Kyuhyun selalu mengerjakan soal-soal matematika untuk mengisi waktu luang.
46. Banyak yang bilang kalo Kyuhyun mirip dengan artis Choi Sung Gook. Katanya gigi dan cara senyumnya mirip dengannya.
47. Ryewook bilang kalau Kyuhyun itu si mandiri yang imut. Walau kadang imutnya keterlaluan. Tiap dapat tumpukkan hadian dari fansnya. Kyuhyun pasti kaget terus. Kayak dia gak sadar kalo dia salah satu anggota yang paling bejibun fansnya. Ryewook aja pengen punya sifat kayak Kyuhyun.
48. Salah satu member SuJu yang filsuf dan religius. Kangin pernah bilang ke Anggota Suju “You Should listen to hyung’s words!!”.. itu kalau Kyuhyun lagi ngomongin pepatah2.
49. Saat Kyu ditanya “siapa satu – satunya orang yang ingin kamu ucapkan terima kasih ?” … lalu Kyu menjawab jika aku memilih cuma satu antara ayah dan ibuku, salah satu pasti akan ada yang marah. Jadi aku akan memilih kakak perempuanku yang umurnya beda 2 tahun diatasku. Dan kakakku itu sangat cantik. Dia selalu menganggap dan memanggilku sebagai anaknya. Tiap kali aku duduk depan komputer, dia akan lari dan langsung mencium dan memelukku. Sekarang dia sedang belajar di luar negri. Tiap kembali ke Korea, dia selalu membelikanku hadiah. Member yang lain bilang mereka iri melihatku punya kakak sebaik dan secantik dia, dan berharap mereka pun punya kakak perempuan sesempurna itu.
50. Kalau tidur, Kyuhyun pasti ngoroknya keras banget “dy ngaku sendiri”. Jadi kalau Kyuhyun udah tidur, Anggota Super Junior yang lain pasti nutupin Kyuhyun pake bantal. Kata Kyuhyun dia kalo tidur suka ngiler *hah ??*
51. Percaya dengan cerita Natal bahwa kalau anak-anak menaruh kaos kaki saat Natal akan diberi hadiah dari Santa. Lalu, Kyu punya ide, yaitu menaruh celana jeans nya yang longgar sebagai pengganti kaos kaki, karena menurutnya kaos kaki kurang besar untuk hadiah yang dia inginkan *… ha…ha…oppa lucu*
52. Kyuhyun sangat terobsesi dengan drama yang bersejarah. Pernah saat film Jumong disiarkan selama 10 bulan di tv korea dengan jumlah 81 episode. Dengan setianya dia nonton drama itu gak pernah kelewat. Kyuhyun akhirnya mendapat julukan “Kyumong”. Dia juga suka nonton drama Love in Paris, The Big Swindle, My Sassy Girl, Dae Jo yeong. Karena sukanya dengan My Sassy Girl, dia sampe hafal lagu-lagunya.
53. Suatu acara, KBS Star Golden Bell, Suju jadi bintang tamu. Acara ini mengusung topik. “ Sekarang kan saya selebriti “. Lalu Kyu bilang “ tapi orang – orang tidak mengenal saya “. Dulu waktu 3 bulan aktif menjadi anggota Suju, waktu itu Kyu lagi jalan mau mengunjungi tetangganya. Lalu kepikiran orang – orang akan mengenalku kah ??”. Tiba – tiba ada 2 cewe ngikutin Kyu terus. Dia pikir mereka mau minta tanda tangan. Dan ternyata mereka malah minta tolong Kyu buat beli rokok.
54. Kyuhyun termasuk member SJ terkaya ke-3. Setelah Siwon terkaya pertama dan Sungmin terkaya ke-2
55. Katanya si kyu pernah nampar Jessica-snsd gara-gara Onnie manggil Kyuhyun “labu”.
56. Kalimat Thailand yang paling Kyuhyun suka : Rak Na Dek Ngo (aku cinta kamu gadis manis).
57. Warna favorit Kyuhyun itu Biru, Hitam, Putih.
58. Tipe cewek idaman Kyuhyun : barambut panjang, bermata bulat, berkaki indah dan selalu peduli terhadapnya plus setia.
59. Kalimat Cina yang paling Kyuhyun suka yaitu Wo Bu Hui Han Yu (aku tidak bisa bahasa mandarin), Tai Bu Xiang Hua Le dan Fuwuyuar (pelayan), (Kyuhyun paling fasih kalau bilang Fuwuyuar). Dia pernah berada di restoran cina. Makanannya udah abis dan Oppa ngomong dengan lantang “Fuwuyuar”. Pas pelayannya datang dan menanyakan pake bahasa cina. Kyuhyun bingung mau jawab apa cos Oppa belum terlalu bisa bahasa cina. *hehhe*.
60. Paling nggak bisa menahan ketawa.
a. Bukti pertama : Pernah Kyu saking nggak bisa nahan ketawa, Ia membuat Zhoumi malu. Saat itu sedang pengambilan gambar SJ-M menyanyikan lagu Blue Tomorrow di salah satu televisi Cina. Nah, Zhoumi saat itu sedang kurang sehat dan saat menyanyikan bagiannya yang bernada tinggi, suara Zhoumi tidak sampai dan menjadi sangat fals. Kyu tidak kuat menahan ketawanya, sampai2 bagian menyanyinya di ambil alih oleh Ryeowook dan Kyu tidak berhenti tertawa sampai lagu selesai. Namun, setelah itu Kyu memberi pelukan buat hyung yang telah Ia permalukan.
b. Bukti kedua : Pernah juga saat sedang show live, Super Junior menampilkan lagu Sorry Sorry dan saat itu Eunhyuk sedang tidak ada. Anehnya, mengapa Kyu yang ditunjuk untuk menggantikan Eunhyuk sebagai dancer tangannya ? Kenapa nggak Donghae atau Heechul yang lebih jago ? Kita tahu kalau Kyu tidak terlalu jago dance, sehingga dance tangannya menjadi aneh. Dia malah menertawai dirinya. Wookie cengar-cengir ngelihatnya. Hangeng ngeliatin Kyu sebentar. Wonnie lama ngeliatin Kyu mainin tangannya. Donghae juga pengen ketawa, Yesung malah udah ketawa ngakak. Padahal itu diatas panggung.
61. Kyuhyun sangat terpesona dengan artis Kim Tae Hae dan Jun Ji Hyun.
62. Kyu Hyun memiliki omongan yang pedas (jika ia marah).
63. Kyuhyun pernah bilang waktu di star golden bell challenge ( May 2009 ) member favorite dia di SHINHWA itu Shin Hye Sung. Karna Kyuhyun pernah di kenalin sama orang-orang yang sejenis sama Kyu yaitu gamer sejati. Tapi beberapa menit kemudian Kyuhyun langsung bilang kalau member favoritnya itu ANDY.
64. Ternyata Kyuhyun ngefans banget sama penyanyi Sung si kyung dan Lee sok ra. Waktu itu di interview, dia juga bilang kalau dia ngefans juga sama A-mei penyanyi dari Taiwan.
65. Makanan favorit Kyuhyun : daging babi cincang,(iuuuuh), seafood, dan jajangmyeon.
66. Film favorite Kyuhyun : “ The Constitution of Crime ” & “ Romeo & Juliet ”.
67. Kyuhyun suka banget niruin suara Sung si kyung dengan ngomong kaya gini, “ Jal Jayo ”.
68. Lagu favorit dia di SuJu M : MIRACLE.
69. Kyuhyun sangat suka belajar bahasa inggris.
70. Kyuhyun sering sekali menyanyi lagu “ NAYOSEUMYEON ” ( If It Was Me ),,,, ( jika di suruh menyanyi dia akan memilih lagu itu untuk di nyanyikan ).
71. Orang yang pendiam, namun bila diajak ngobrol tentang game bisa ngomong panjang lebar.
72. Menyukai Yujacha daripada teh biasa ataupun minuman soda.
73. Prestasi Kyu sering diragukan oleh para hyungnya karena pernah salah memencet angka lift 12 menjadi 21. Ceritanya Suatu hari ketika anggota suju pulang malem ke apartemen mereka, Kyuhyun memencet tombol lift menuju apartemen mereka di lantai 12. Sampai di depan pintu mereka heran soalnya pintu apartemen mereka yang penuh coretan-coretan dari fans jadi bersih. Pintunya pun gak bisa dibuka. Setelah di cek mereka ternyata berada di lantai 21 bukan 12.
74. Dekat dengan Sungmin dan pernah menjawab pertanyaan dari ELF di UFOtown.com
a. Q: “Bagaimana cara mendapatkan hati Kyu-oppa?”
b. Kyuhyun: “Aku tidak tahu. Tapi kalau ingin mendapatkannya, kau harus minta izin dari Sungmin”.
75. Menempati posisi ke 2 dalam IQ tertinggi dalam Super Junior yang posisi pertamanya diduduki oleh Kibum yang memiliki IQ 138.
76. Tipe cowok yang bisa membuat hati cewek meleleh hanya dengan diam dan suaranya yang merdu.
77. Masuk 2 sub-group dalam Super Junior, Super Junior – M (bersama Hankyung, Shiwon, Ryeowook, Donghae, Zhoumi dan Henry) dan K.R.Y. (berisi para main vocal di Super Junior yaitu Kyuhyun, Ryeowook dan Yesung).
78. Favorite brand kyuhyun namanya Doublesice.
79. Member favorit Taeyeon di SJ adalah Kyuhyun, dia pernah gugup saat ketemu dengan Kyuhyun.
80. Kyuhyun suka meracuni member Suju lainnya yaitu Donghae dan Heechul.

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motion (physic)


Motion (physics)

Motion involves change in position, such as in this perspective of rapidly leaving Yongsan Station

In physics, motion is change of location or position of an object with respect to time. Change in motion is the result of an applied force. Motion is typically described in terms of velocity, acceleration, displacement, and time.[1] An object’s velocity cannot change unless it is acted upon by a force, as described by Newton’s first law also known as Inertia. An object’s momentum is directly related to the object’s mass and velocity, and the total momentum of all objects in a closed system (one not affected by external forces) does not change with time, as described by the law of conservation of momentum.

A body which does not move is said to be at rest, motionless, immobile, stationary, or to have constant (time-invariant) position.

Motion is always observed and measured relative to a frame of reference. As there is no absolute reference frame, absolute motion cannot be determined; this is emphasised by the term relative motion.[2] A body which is motionless relative to a given reference frame, moves relative to infinitely many other frames. Thus, everything in the universe is moving.[3]

More generally, the term motion signifies any spatial and/or temporal change in a physical system. For example, one can talk about motion of a wave or a quantum particle (or any other field) where the concept location does not apply.

Laws of Motion

Main article: Mechanics

In physics, motion in the universe is described through two sets of apparently contradictory laws of mechanics. Motions of all large scale and familiar objects in the universe (such as projectiles, planets, cells, and humans) are described by classical mechanics. Whereas the motion of very small atomic and sub-atomic sized objects is described by quantum mechanics.

[edit] Classical mechanics

Main article: Classical mechanics

Classical mechanics is used for describing the motion of macroscopic objects, from projectiles to parts of machinery, as well as astronomical objects, such as spacecraft, planets, stars, and galaxies. It produces very accurate results within these domains, and is one of the oldest and largest subjects in science, engineering and technology.

Classical mechanics is fundamentally based on Newton’s Laws of Motion. These laws describe the relationship between the forces acting on a body and the motion of that body. They were first compiled by Sir Isaac Newton in his work Philosophiæ Naturalis Principia Mathematica, first published on July 5, 1687. His three laws are:

  1. In the absence of a net external force, a body either is at rest or moves with constant velocity.
  2. The net external force on a body is equal to the mass of that body times its acceleration; Fma. Alternatively, force is proportional to the time derivative of momentum.
  3. Whenever a first body exerts a force F on a second body, the second body exerts a force −F on the first body. F and −F are equal in magnitude and opposite in direction.[4]

Newton’s three laws of motion, along with his law of universal gravitation, explain Kepler’s laws of planetary motion, which were the first to accurately provide a mathematical model or understanding orbiting bodies in outer space. This explanation unified the motion of celestial bodies and motion of objects on earth.

Classical mechanics was later further enhanced by Albert Einstein’s special relativity and general relativity. Special relativity explains the motion of objects with a high velocity, approaching the speed of light; general relativity is employed to handle gravitation motion at a deeper level.

Quantum mechanics

Main article: Quantum mechanics

Quantum mechanics is a set of principles describing physical reality at the atomic level of matter (molecules and atoms) and the subatomic (electrons, protons, and even smaller particles). These descriptions include the simultaneous wave-like and particle-like behavior of both matter and radiation energy, this described in the wave–particle duality.

In contrast to classical mechanics, where accurate measurements and predictions can be calculated about location and velocity, in the quantum mechanics of a subatomic particle, one can never specify its state, such as its simultaneous location and velocity, with complete certainty (this is called the Heisenberg uncertainty principle).

In addition to describing the motion of atomic level phenomenon, quantum mechanics is useful in understanding some large scale phenomenon such as superfluidity, superconductivity, and biological systems, including the function of smell receptors and the structures of proteins.

List of “imperceptible” human motions

Humans, like all things in the universe are in constant motion,[5] however, aside from obvious movements of the various external body parts and locomotion, humans are in motion in a variety of ways which are more difficult to perceive. Many of these “imperceptible motions” are only perceivable with the help of special tools and careful observation. The larger scales of “imperceptible motions” are difficult for humans to perceive for two reasons: 1) Newton’s laws of motion (particularly Inertia) which prevent humans from feeling motions of a mass to which they are connected, and 2) the lack of an obvious frame of reference which would allow individuals to easily see that they are moving.[6] The smaller scales of these motions are too small for humans to sense.

Universe

  • Spacetime (the fabric of the universe) is actually expanding. Essentially, everything in the universe is stretching like a rubber band. This motion is the most obscure as it is not physical motion as such, but rather a change in the very nature of the universe. The primary source of verification of this expansion was provided by Edwin Hubble who demonstrated that all galaxies and distant astronomical objects were moving away from us (Hubble’s law) as predicted by a universal expansion.[7]

[edit] Galaxy

  • The Milky Way Galaxy, is hurtling through space at an incredible speed. It is powered by the force left over from the Big Bang. Many astronomers believe the Milky Way is moving at approximately 600 km/s relative to the observed locations of other nearby galaxies. Another reference frame is provided by the Cosmic microwave background. This frame of reference indicates that The Milky Way is moving at around 552 km/s.[8]

Solar System

Earth

  • The Earth is rotating or spinning around its axis, this is evidenced by day and night, at the equator the earth has an eastward velocity of 0.4651 km/s (or 1040 mi/h).[10]
  • The Earth is orbiting around the Sun in an orbital revolution. A complete orbit around the sun takes one year or about 365 days; it averages a speed of about 30 km/s (or 67,000 mi/h).[11]

Continents

  • The Theory of Plate tectonics tells us that the continents are drifting on convection currents within the mantle causing them to move across the surface of the planet at the slow speed of approximately 1 inch (2.54 cm) per year.[12][13] However, the velocities of plates range widely. The fastest-moving plates are the oceanic plates, with the Cocos Plate advancing at a rate of 75 mm/yr[14] (3.0 in/yr) and the Pacific Plate moving 52–69 mm/yr (2.1–2.7 in/yr). At the other extreme, the slowest-moving plate is the Eurasian Plate, progressing at a typical rate of about 21 mm/yr (0.8 in/yr).

Internal body

  • The human heart is constantly contracting to move blood throughout the body. Through larger veins and arteries in the body blood has been found to travel at approximately 0.33 m/s.[15] Though considerable variation exists, and peak flows in the venae cavae have been found to range between 0.1 m/s and 0.45 m/s.[16]
  • The smooth muscles of hollow internal organs are moving. The most familiar would be peristalsis which is where digested food is forced throughout the digestive tract. Though different foods travel through the body at rates, an average speed through the human small intestine is 2.16 m/h or 0.036 m/s.[17]
  • Typically some sound is audible at any given moment, when the vibration of these sound waves reaches the ear drum it moves in response and allows the sense of hearing.
  • The human lymphatic system is constantly moving excess fluids, lipids, and immune system related products around the body. The lymph fluid has been found to move through a lymph capillary of the skin at approximately 0.0000097 m/s.[18]

[edit] Cells

The cells of the human body have many structures which move throughout them.

Particles

Subatomic particles

  • Within each atom the electrons are speeding around the nucleus so fast that they are not actually in one location, but rather smeared across a region of the electron cloud. Electrons have a high velocity, and the larger the nucleus they are orbiting the faster they move. In a hydrogen atom, electrons have been calculated to be orbiting at a speed of approximately 2,420,000 m/s[23]
  • Inside the atomic nucleus the protons and neutrons are also probably moving around due the electrical repulsion of the protons and the presence of angular momentum of both particles.[24]

Light

Main article: Light

Light propagates at 299,792,458 m/s (about 186,282.397 mi/s).

Types



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biology


Biodiversity is the variation of life forms within a given ecosystem, biome, or for the entire Earth. Biodiversity is often used as a measure of the health of biological systems. The biodiversity found on Earth today consists of many millions of distinct biological species, which is the product of nearly 3.5 billion years of evolution.[1][2] 2010 has been declared as the International Year of Biodiversity.

Etymology

The term was used first by wildlife scientist and conservationist Raymond F. Dasmann in a lay book[3] advocating nature conservation. The term was not widely adopted for more than a decade, when in the 1980s it and “biodiversity” came into common usage in science and environmental policy. Use of the term by Thomas Lovejoy in the Foreword to the book[4] credited with launching the field of conservation biology introduced the term along with “conservation biology” to the scientific community. Until then the term “natural diversity” was used in conservation science circles, including by The Science Division of The Nature Conservancy in an important 1975 study, “The Preservation of Natural Diversity.” By the early 1980s TNC’s Science program and its head Robert E. Jenkins, Lovejoy, and other leading conservation scientists at the time in America advocated the use of “biological diversity” to embrace the object of biological conservation.

The term’s contracted form biodiversity may have been coined by W.G. Rosen in 1985 while planning the National Forum on Biological Diversity organized by the National Research Council (NRC) which was to be held in 1986, and first appeared in a publication in 1988 when entomologist E. O. Wilson used it as the title of the proceedings[5] of that forum.[6]

Since this period both terms and the concept have achieved widespread use among biologists, environmentalists, political leaders, and concerned citizens worldwide. The term is sometimes used to equate to a concern for the natural environment and nature conservation. This use has coincided with the expansion of concern over extinction observed in the last decades of the 20th century.

A similar concept in use in the United States, besides natural diversity, is the term “natural heritage.” It pre-dates both terms though it is a less scientific term and more easily comprehended in some ways by the wider audience interested in conservation. Furthermore it may be misleading if used to refer only to biodiversity, as natural heritage also includes geology and landforms (geodiversity). The term “Natural Heritage” was used when Jimmy Carter set up the Georgia Heritage Trust while he was governor of Georgia; Carter’s trust dealt with both natural and cultural heritage. It would appear that Carter picked the term up from Lyndon Johnson, who used it in a 1966 Message to Congress. “Natural Heritage” was picked up by the Science Division of the US Nature Conservancy when, under Jenkins, it launched in 1974 the network of State Natural Heritage Programs. This network took on a life of its own in the 1990s when it became an independent non-profit organization named NatureServe. When NatureServe was extended outside the USA, the term “Conservation Data Center” was suggested by Guillermo Mann is now also used by several programs, for example those that operate as part of NatureServe Canada.

Definitions

A Sampling of fungi collected during summer 2008 in Northern Saskatchewan mixed woods, near LaRonge is an example regarding the species diversity of fungi. In this photo, there are also leaf lichens and mosses.

“Biological diversity” or “biodiversity” can have many interpretations and it is most commonly used to replace the more clearly defined and long established terms, species diversity and species richness. Biologists most often define biodiversity as the “totality of genes, species, and ecosystems of a region”. An advantage of this definition is that it seems to describe most circumstances and present a unified view of the traditional three levels at which biological variety has been identified:

But Professor Anthony Campbell at Cardiff University, UK and the Darwin Centre, Pembrokeshire, has defined a fourth, and critical one: Molecular Diversity (see Campbell, AK J Applied Ecology 2003,40,193-203; Save those molecules: molecular biodiversity and life).

This multilevel conception is consistent with the early use of “biological diversity” in Washington, D.C. and international conservation organizations in the late 1960s through 1970‘s, by Raymond F. Dasmann who apparently coined the term and Thomas E. Lovejoy who later introduced it to the wider conservation and science communities. An explicit definition consistent with this interpretation was first given in a paper by Bruce A. Wilcox commissioned by the International Union for the Conservation of Nature and Natural Resources (IUCN) for the 1982 World National Parks Conference in Bali [7] The definition Wilcox gave is “Biological diversity is the variety of life forms…at all levels of biological systems (i.e., molecular, organismic, population, species and ecosystem)…” Subsequently, the 1992 United Nations Earth Summit in Rio de Janeiro defined “biological diversity” as “the variability among living organisms from all sources, including, ‘inter alia’, terrestrial, marine, and other aquatic ecosystems, and the ecological complexes of which they are part: this includes diversity within species, between species and of ecosystems”. This is, in fact, the closest thing to a single legally accepted definition of biodiversity, since it is the definition adopted by the United Nations Convention on Biological Diversity.

The current textbook definition of “biodiversity” is “variation of life at all levels of biological organization”.[8]

For geneticists, biodiversity is the diversity of genes and organisms. They study processes such as mutations, gene exchanges, and genome dynamics that occur at the DNA level and generate evolution. Consistent with this, along with the above definition the Wilcox paper stated “genes are the ultimate source of biological organization at all levels of biological systems…”

Measurement

A variety of objective measures have been created in order to empirically measure biodiversity. Each measure of biodiversity relates to a particular use of the data. For practical conservationists, measurements should include a quantification of values that are commonly-shared among locally affected organisms, including humans. For others, a more economically defensible definition should allow the ensuring of continued possibilities for both adaptation and future use by humans, assuring environmental sustainability.

Distribution

Selection bias amongst researchers may contribute to biased empirical research for modern estimates of biodiversity. In 1768 Rev. Gilbert White succinctly observed of his Selborne, Hampshire “all nature is so full, that that district produces the most variety which is the most examined.”[9]

Nevertheless, biodiversity is not distributed evenly on Earth. It is consistently richer in the tropics and in other localized regions such as the Cape Floristic Province. As one approaches polar regions one generally finds fewer species. Flora and fauna diversity depends on climate, altitude, soils and the presence of other species. In the year 2006 large numbers of the Earth’s species were formally classified as rare or endangered or threatened species; moreover, many scientists have estimated that there are millions more species actually endangered which have not yet been formally recognized. About 40 percent of the 40,177 species assessed using the IUCN Red List criteria, are now listed as threatened species with extinction – a total of 16,119 species.[10]

Even though biodiversity declines from the equator to the poles in terrestrial ecoregions, whether this is so in aquatic ecosystems is still a hypothesis to be tested, especially in marine ecosystems where causes of this phenomenon are unclear.[11] In addition, particularly in marine ecosystems, there are several well stated cases where diversity in higher latitudes actually increases. Therefore, the lack of information on biodiversity of Tropics and Polar Regions prevents scientific conclusions on the distribution of the world’s aquatic biodiversity.

A biodiversity hotspot is a region with a high level of endemic species. These biodiversity hotspots were first identified in 1988 by Dr. Norman Myers in two articles in the scientific journal The Environmentalist.[12][13] Dense human habitation tends to occur near hotspots. Most hotspots are located in the tropics and most of them are forests.

Brazil‘s Atlantic Forest is considered a hotspot of biodiversity and contains roughly 20,000 plant species, 1350 vertebrates, and millions of insects, about half of which occur nowhere else in the world. The island of Madagascar including the unique Madagascar dry deciduous forests and lowland rainforests possess a very high ratio of species endemism and biodiversity, since the island separated from mainland Africa 65 million years ago, most of the species and ecosystems have evolved independently producing unique species different from those in other parts of Africa.

Many regions of high biodiversity (as well as high endemism) arise from very specialized habitats which require unusual adaptation mechanisms, for example alpine environments in high mountains, or the peat bogs of Northern Europe.

Evolution

Main article: Evolution

Apparent marine fossil diversity during the Phanerozoic Eon

Biodiversity found on Earth today is the result of 3.5 billion years of evolution. The origin of life has not been definitely established by science, however some evidence suggests that life may already have been well-established a few hundred million years after the formation of the Earth. Until approximately 600 million years ago, all life consisted of archaea, bacteria, protozoans and similar single-celled organisms.

The history of biodiversity during the Phanerozoic (the last 540 million years), starts with rapid growth during the Cambrian explosion—a period during which nearly every phylum of multicellular organisms first appeared. Over the next 400 million years or so, global diversity showed little overall trend, but was marked by periodic, massive losses of diversity classified as mass extinction events.

The apparent biodiversity shown in the fossil record suggests that the last few million years include the period of greatest biodiversity in the Earth’s history. However, not all scientists support this view, since there is considerable uncertainty as to how strongly the fossil record is biased by the greater availability and preservation of recent geologic sections. Some (e.g. Alroy et al. 2001) argue that, corrected for sampling artifacts, modern biodiversity is not much different from biodiversity 300 million years ago.[14] Estimates of the present global macroscopic species diversity vary from 2 million to 100 million species, with a best estimate of somewhere near 13–14 million, the vast majority of them arthropods.[15]

The existence of a global carrying capacity has been debated, that is to say that there is a limit to the number of species that can live on this planet. While records of life in the sea shows a logistic pattern of growth, life on land (insects, plants and tetrapods)shows an exponential rise in diversity. As one author states, “Tetrapods have not yet invaded 64 per cent of potentially habitable modes, and it could be that without human influence the ecological and taxonomic diversity of tetrapods would continue to increase in an exponential fashion until most or all of the available ecospace is filled.”[16]

Most biologists agree however that the period since the emergence of humans is part of a new mass extinction, the Holocene extinction event, caused primarily by the impact humans are having on the environment. It has been argued that the present rate of extinction is sufficient to eliminate most species on the planet Earth within 100 years.[17]

New species are regularly discovered (on average between 5–10,000 new species each year, most of them insects) and many, though discovered, are not yet classified (estimates are that nearly 90% of all arthropods are not yet classified).[15] Most of the terrestrial diversity is found in tropical forests.

Human benefits

Summer field in Belgium (Hamois). The blue flowers are Centaurea cyanus and the red are Papaver rhoeas.

Biodiversity also supports a number of natural ecosystem processes and services.[18] Some ecosystem services that benefit society are air quality,[19] climate (both global CO2 sequestration and local), water purification, pollination, and prevention of erosion.[19]

Since the stone age, species loss has been accelerated above the geological rate by human activity. The rate of species extinction is difficult to estimate, but it has been estimated that species are now being lost at a rate approximately 100 times as fast as is typical in the geological record, or perhaps as high as 10 000 times as fast.[20] To feed such a large population, more land is being transformed from wilderness with wildlife into agricultural, mining, lumbering, and urban areas for humans.

Non-material benefits that are obtained from ecosystems include spiritual and aesthetic values, knowledge systems and the value of education.

Agriculture

The economic value of the reservoir of genetic traits present in wild varieties and traditionally grown landraces is extremely important in improving crop performance[citation needed]. Important crops, such as the potato and coffee, are often derived from only a few genetic strains[citation needed]. Improvements in crop plants over the last 250 years have been largely due to harnessing the genetic diversity present in wild and domestic crop plants[citation needed]. Interbreeding crops strains with different beneficial traits has resulted in more than doubling crop production in the last 50 years as a result of the Green Revolution[citation needed].

Crop diversity is also necessary to help the system recover when the dominant crop type is attacked by a disease:

  • The Irish potato blight of 1846, which was a major factor in the deaths of a million people and migration of another million, was the result of planting only two potato varieties, both of which were vulnerable.
  • When rice grassy stunt virus struck rice fields from Indonesia to India in the 1970s, 6273 varieties were tested for resistance.[21] One was found to be resistant, an Indian variety, known to science only since 1966.[21] This variety formed a hybrid with other varieties and is now widely grown.[21]
  • Coffee rust attacked coffee plantations in Sri Lanka, Brazil, and Central America in 1970. A resistant variety was found in Ethiopia.[22] Although the diseases are themselves a form of biodiversity.

Monoculture, the lack of biodiversity, was a contributing factor to several agricultural disasters in history, the European wine industry collapse in the late 1800s, and the US Southern Corn Leaf Blight epidemic of 1970.[23] Higher biodiversity also controls the spread of certain diseases as pathogens will need to adapt to infect different species[citation needed].

Biodiversity provides food for humans[citation needed]. Although about 80 percent of our food supply comes from just 20 kinds of plants[citation needed], humans use at least 40,000 species of plants and animals a day[citation needed]. Many people around the world depend on these species for their food, shelter, and clothing[citation needed]. There is untapped potential for increasing the range of food products suitable for human consumption, provided that the high present extinction rate can be stopped.[17]

Human health

The diverse forest canopy on Barro Colorado Island, Panama, yielded this display of different fruit

The relevance of biodiversity to human health is becoming a major international political issue, as scientific evidence builds on the global health implications of biodiversity loss.[24][25][26] This issue is closely linked with the issue of climate change,[27] as many of the anticipated health risks of climate change are associated with changes in biodiversity (e.g. changes in populations and distribution of disease vectors, scarcity of fresh water, impacts on agricultural biodiversity and food resources etc). Some of the health issues influenced by biodiversity include dietary health and nutrition security, infectious diseases, medical science and medicinal resources, social and psychological health,[28] and spiritual well-being. Biodiversity is also known to have an important role in reducing disaster risk, and in post-disaster relief and recovery efforts.[29][30]

One of the key health issues associated with biodiversity is that of drug discovery and the availability of medicinal resources.[31] A significant proportion of drugs are derived, directly or indirectly, from biological sources; Chivian and Bernstein report that at least 50% of the pharmaceutical compounds on the market in the US are derived from natural compounds found in plants, animals, and microorganisms, while about 80% of the world population depends on medicines from nature (used in either modern or traditional medical practice) for primary healthcare.[25] Moreover, only a tiny proportion of the total diversity of wild species has been investigated for potential sources of new drugs. Through the field of bionics, considerable technological advancement has occurred which would not have without a rich biodiversity. It has been argued, based on evidence from market analysis and biodiversity science, that the decline in output from the pharmaceutical sector since the mid-1980s can be attributed to a move away from natural product exploration (“bioprospecting”) in favour of R&D programmes based on genomics and synthetic chemistry, neither of which have yielded the expected product outputs; meanwhile, there is evidence that natural product chemistry can provide the basis for innovation which can yield significant economic and health benefits.[32][33] Marine ecosystems are of particular interest in this regard,[34] however unregulated and inappropriate bioprospecting can be considered a form of over-exploitation which has the potential to degrade ecosystems and increase biodiversity loss, as well as impacting on the rights of the communities and states from which the resources are taken.[35][36][37]

Business and Industry

Agriculture production, pictured is a tractor and a chaser bin.

A wide range of industrial materials are derived directly from biological resources. These include building materials, fibers, dyes, resirubber and oil. There is enormous potential for further research into sustainably utilizing materials from a wider diversity of organisms. In addition, biodiversity and the ecosystem goods and services it provides are considered to be fundamental to healthy economic systems. The degree to which biodiversity supports business varies between regions and between economic sectors, however the importance of biodiversity to issues of resource security (water quantity and quality, timber, paper and fibre, food and medicinal resources etc) are increasingly recognized as universal.[38][39][40] As a result, the loss of biodiversity is increasingly recognized as a significant risk factor in business development and a threat to long term economic sustainability. A number of case studies recently compiled by the World Resources Institute demonstrate some of these risks as identified by specific industries.[41]

Other ecological services

Eagle Creek, Oregon hiking

Biodiversity provides many ecosystem services that are often not readily visible. It plays a part in regulating the chemistry of our atmosphere and water supply. Biodiversity is directly involved in water purification, recycling nutrients and providing fertile soils. Experiments with controlled environments have shown that humans cannot easily build ecosystems to support human needs; for example insect pollination cannot be mimicked by human-made construction, and that activity alone represents tens of billions of dollars in ecosystem services per year to humankind.

The stability of ecosystems is also related to biodiversity, with higher biodiversity producing greater stability over time, reducing the chance that ecosystem services will be disrupted as a result of disturbances such as extreme weather events or human exploitation.

Polar bears on the sea ice of the Arctic Ocean, near the North Pole.

Leisure, cultural and aesthetic value

Many people derive value from biodiversity through leisure activities such as hiking, birdwatching or natural history study. Biodiversity has inspired musicians, painters, sculptors, writers and other artists. Many cultural groups view themselves as an integral part of the natural world and show respect for other living organisms.

Popular activities such as gardening, caring for aquariums and collecting butterflies are all strongly dependent on biodiversity. The number of species involved in such pursuits is in the tens of thousands, though the great majority do not enter mainstream commercialism.

The relationships between the original natural areas of these often ‘exotic’ animals and plants and commercial collectors, suppliers, breeders, propagators and those who promote their understanding and enjoyment are complex and poorly understood. It seems clear, however, that the general public responds well to exposure to rare and unusual organisms—they recognize their inherent value at some level. A family outing to the botanical garden or zoo is as much an aesthetic or cultural experience as it is an educational one.

Philosophically it could be argued that biodiversity has intrinsic aesthetic and spiritual value to mankind in and of itself. This idea can be used as a counterweight to the notion that tropical forests and other ecological realms are only worthy of conservation because they may contain medicines or useful products.

An interesting point is that evolved DNA embodies knowledge,[42] and therefore destroying a species resembles burning a book, with the caveat that the book is of uncertain depth and importance and may in fact be best used as fuel.

Number of species

Main article: Species

Undiscovered and discovered species

According to the Global Taxonomy Initiative[43] and the European Distributed Institute of Taxonomy, the total number of species for some phyla may be much higher as what we know currently:

Due to the fact that we know but a portion of the organisms in the biosphere, we do not have a complete understanding of the workings of our environment. To make matters worse, according to professor James Mallet, we are wiping out these species at an unprecedented rate.[49] This means that even before a species has had the chance of being discovered, studied and classified, it may already be extinct.

Threats

Loss of old growth forest in the United States; 1620, 1850, 1920, and 1992 maps:
From William B. Greeley’s, The Relation of Geography to Timber Supply, Economic Geography, 1925, vol. 1, p. 1–11. Source of “Today” map: compiled by George Draffan from roadless area map in The Big Outside: A Descriptive Inventory of the Big Wilderness Areas of the United States, by Dave Foreman and Howie Wolke (Harmony Books, 1992). These maps represent only virgin forest lost. Some regrowth has occurred but not to the age, size or extent of 1620 due to population increases and food cultivation.

During the last century, decreases in biodiversity have been increasingly observed. Studies[by whom?] show that 30% of all natural species will be extinct by 2050.[50] Of these, about one eighth of the known plant species are threatened with extinction.[51] Some estimates put the loss at up to 140,000 species per year (based on Species-area theory) and subject to discussion.[52] This figure indicates unsustainable ecological practices, because only a small number of species come into being each year. Almost all scientists acknowledge [51] that the rate of species loss is greater now than at any time in human history, with extinctions occurring at rates hundreds of times higher than background extinction rates.

The factors that threaten biodiversity have been variously categorized. Jared Diamond describes an “Evil Quartet” of habitat destruction, overkill, introduced species, and secondary extensions. Edward O. Wilson prefers the acronym HIPPO, standing for Habitat destruction, Invasive species, Pollution, Human Over Population, and Overharvesting.[53][54] The most authoritative classification in use today is that of IUCN’s Classification of Direct Threats[55] adopted by most major international conservation organizations such as the US Nature Conservancy, the World Wildlife Fund, Conservation International, and Birdlife International.

Destruction of habitat

Deforestation and increased road-building in the Amazon Rainforest are a significant concern because of increased human encroachment upon wild areas, increased resource extraction and further threats to biodiversity.

Main article: Habitat destruction

Most of the species extinctions from 1000 AD to 2000 AD are due to human activities, in particular destruction of plant and animal habitats. Raised rates of extinction are being driven by human consumption of organic resources, especially related to tropical forest destruction.[56] While most of the species that are becoming extinct are not food species, their biomass is converted into human food when their habitat is transformed into pasture, cropland, and orchards[57]. It is estimated that more than a third of the Earth’s biomass[58] is tied up in only the few species that represent humans, livestock and crops. Because an ecosystem decreases in stability as its species are made extinct, these studies warn that the global ecosystem is destined for collapse if it is further reduced in complexity. Factors contributing to loss of biodiversity are: overpopulation, deforestation, pollution (air pollution, water pollution, soil contamination) and global warming or climate change, driven by human activity. These factors, while all stemming from overpopulation, produce a cumulative impact upon biodiversity.

There are systematic relationships between the area of a habitat and the number of species it can support, with greater sensitivity to reduction in habitat area for species of larger body size and for those living at lower latitudes or in forests or oceans.[59] Some characterize loss of biodiversity not as ecosystem degradation but by conversion to trivial standardized ecosystems (e.g., monoculture following deforestation). In some countries lack of property rights or access regulation to biotic resources necessarily leads to biodiversity loss (degradation costs having to be supported by the community).

A September 14, 2007 study conducted by the National Science Foundation found that biodiversity and genetic diversity are dependent upon each other—that diversity within a species is necessary to maintain diversity among species, and vice versa. According to the lead researcher in the study, Dr. Richard Lankau, “If any one type is removed from the system, the cycle can break down, and the community becomes dominated by a single species.”[60]

At present, the most threathened ecosystems are those found in fresh water. The marking of fresh water ecosystems as the ecosystems most under threat was done by the Millennium Ecosystem Assessment 2005, and was confirmed again by the project “Freshwater Animal Diversity Assessment“, organised by the biodiversity platform, and the French Institut de recherche pour le développement (MNHNP).[61]

Exotic species

Male Lophura nycthemera (Silver Pheasant), a native of East Asia that has been introduced into parts of Europe for ornamental reasons.

Main article: Introduced species

The rich diversity of unique species across many parts of the world exist only because they are separated by barriers, particularly large rivers, seas, oceans, mountains and deserts from other species of other land masses, particularly the highly fecund, ultra-competitive, generalist “super-species”. These are barriers that couldn’t have been easily crossed by natural processes, except through continental drift. However, humans have invented transportation with the ability to bring into contact species that they’ve never met in their evolutionary history; also, this is done on a time scale of days, unlike the centuries that historically have accompanied major animal migrations. As these species that never met before come in contact with each other, the rate at which species are extincting is increasing still. See below for an example.

The widespread introduction of exotic species by humans is a potent threat to biodiversity. When exotic species are introduced to ecosystems and establish self-sustaining populations, the endemic species in that ecosystem that have not evolved to cope with the exotic species may not survive. The exotic organisms may be either predators, parasites, or simply aggressive species that deprive indigenous species of nutrients, water and light. These invasive species often have features, due to their evolutionary background and new environment, that make them highly competitive; able to become well-established and spread quickly, reducing the effective habitat of endemic species.

Exotic species are introduced by human, either unwillingly or intentionally. Examples on unwilling introduction are fore example ladybugs, … These were bred to help in combating pests in agriculture (for greenhouses). Other examples of unwilling introduction are species that are unknowingly brought in by vessel or automotive. These include certain bacteria, spiders, seeds of certain plants. Examples of intentional introduction are the planting of exotic plants in gardens. It is clear that with simple measures the preventing of the spread of exotic plants, yet as of present, trying to reduce the inflow of exotic species has remained low on the political agenda. Also, the intentional planting of species that are marked as “indiginous”, yet are from a non-indigenous strain can be considered exotic and create problems in the ecosystem. For example in Belgium, Prunus spinosa (an indigenous species) that originates from Eastern Europe has been introduced. This has created problems, as the this tree species comes into leave much sooner than their West European counterparts, bringing the Thecla betulae butterfly (which feed on the leaves) into trouble.

As a consequence of the above, if humans continue to combine species from different ecoregions, there is the potential that the world’s ecosystems will end up dominated by relatively a few, aggressive, cosmopolitan “super-species”.

At present, several countries have already imported so much exotic species, that the own indigenous fauna/flora is greatly outnumbered. For example, in Belgium, only 5% of the indigenous trees remain.[62][63]

In 2004, an international team of scientists estimated that 10 percent of species would become extinct by 2050 because of global warming.[64] “We need to limit climate change or we wind up with a lot of species in trouble, possibly extinct,” said Dr. Lee Hannah, a co-author of the paper and chief climate change biologist at the Center for Applied Biodiversity Science at Conservation International.

Genetic pollution

Main article: Genetic pollution

Purebred naturally evolved region specific wild species can be threatened with extinction[65] through the process of genetic pollution i.e. uncontrolled hybridization, introgression and genetic swamping which leads to homogenization or replacement of local genotypes as a result of either a numerical and/or fitness advantage of introduced plant or animal.[66] Nonnative species can bring about a form of extinction of native plants and animals by hybridization and introgression either through purposeful introduction by humans or through habitat modification, bringing previously isolated species into contact. These phenomena can be especially detrimental for rare species coming into contact with more abundant ones. The abundant species can interbreed with the rarer, swamping the entire gene pool and creating hybrids, thus driving the entire native stock to complete extinction. Attention has to be focused on the extent of this under appreciated problem that is not always apparent from morphological (outward appearance) observations alone. Some degree of gene flow may be a normal, evolutionarily constructive, process, and all constellations of genes and genotypes cannot be preserved. However, hybridization with or without introgression may, nevertheless, threaten a rare species’ existence.[67][68]

Hybridization and genetics

The Yecoro wheat (right) cultivar is sensitive to salinity, plants resulting from a hybrid cross with cultivar W4910 (left) show greater tolerance to high salinity

See also: Food Security

In agriculture and animal husbandry, the green revolution popularized the use of conventional hybridization to increase yield by creating “high-yielding varieties“. Often the handful of hybridized breeds originated in developed countries and were further hybridized with local varieties in the rest of the developing world to create high yield strains resistant to local climate and diseases. Local governments and industry have been pushing hybridization which has resulted in several of the indigenous breeds becoming extinct or threatened. Disuse because of unprofitability and uncontrolled intentional and unintentional cross-pollination and crossbreeding (genetic pollution), formerly huge gene pools of various wild and indigenous breeds have collapsed causing widespread genetic erosion and genetic pollution. This has resulted in loss of genetic diversity and biodiversity as a whole.[69]

A genetically modified organism (GMO) is an organism whose genetic material has been altered using the genetic engineering techniques generally known as recombinant DNA technology. Genetically Modified (GM) crops today have become a common source for genetic pollution, not only of wild varieties but also of other domesticated varieties derived from relatively natural hybridization.[70][71][72][73][74]

Genetic erosion coupled with genetic pollution may be destroying unique genotypes, thereby creating a hidden crisis which could result in a severe threat to our food security. Diverse genetic material could cease to exist which would impact our ability to further hybridize food crops and livestock against more resistant diseases and climatic changes.[69]

Climate Change

The recent phenomenon of global warming is also considered to be a major threat to global biodiversity.[citation needed] For example coral reefs -which are biodiversity hotspots- will be lost in 20 to 40 years if global warming continues at the current trend.[75]

Conserving biodiversity

Main article: Conservation biology

The retreat of Aletsch Glacier in the Swiss Alps (situation in 1979, 1991 and 2002), due to global warming.

Conservation biology matured in the mid- 20th century as ecologists, naturalists, and other scientists began to collectively research and address issues pertaining to global declines in biodiversity.[76][77][78] The conservation ethic differs from the preservationist ethic, historically lead by John Muir, who advocate for protected areas devoid of human exploitation or interference for profit.[77] The conservation ethic advocates for wise stewardship and management of natural resource production for the purpose of protecting and sustaining biodiversity in species, ecosystems, the evolutionary process, and human culture and society.[76][78][79][80] Conservation biologists are concerned with the trends in biodiversity being reported in this era, which has been labeled by science as the Holocene extinction period, also known as the sixth mass extinction.[81] Rates of decline in biodiversity in this sixth mass extinction match or exceed rates of loss in the five previous mass extinction events recorded in the fossil record.[81][82][83][84][85] Loss of biodiversity results in the loss of natural capital that supplies ecosystem goods and services. The economic value of 17 ecosystem services for the entire biosphere (calculated in 1997) has an estimated average value of US$ 33 trillion (1012) per year![86]

A schematic image illustrating the relationship between biodiversity, ecosystem services, human well-being, and poverty.[87] The illustration shows where conservation action, strategies and plans can influence the drivers of the current biodiversity crisis at local, regional, to global scales.

In response to the extinction crisis, the research of conservation biologists is being organized into strategic plans that include principles, guidelines, and tools for the purpose of protecting biodiversity.[76][88][89] Conservation biology is a crisis orientated discipline and it is multi-disciplinary, including ecological, social, education, and other scientific disciplines outside of biology. Conservation biologists work in both the field and office, in government, universities, non-profit organizations and in industry.[76][78] The conservation of biological diversity is a global priority in strategic conservation plans that are designed to engage public policy and concerns affecting local, regional and global scales of communities, ecosystems, and cultures.[90] Conserving biodiversity and action plans identify ways of sustaining human well-being and global economics, including natural capital, market capital, and ecosystem services.[91][92]

Means

One of the strategies involves placing a monetary value on biodiversity through biodiversity banking, of which one example is the Australian Native Vegetation Management Framework. Other approaches are the creation of gene banks, as well as the creation of gene banks that have the intention of growing the indigenous species for reintroduction to the ecosystem (eg via tree nurseries, …)[93] The eradication of exotic species is also an important method to preserve the local biodiversity. Exotic species that have become a pest can be identified using taxonomy (eg with DAISY, barcode of life[94], …) and can then be eradicated. [95]This method however can only be used against a large group of a certain exotic organism due to the econimic cost. Other measures contributing to the preservation of biodiversity include: the reduction of pesticide use and/or a switching to organic pesticides, … These measures however, are of less importance than the preserving of rural lands, reintroduction of indigenous species and the removal of exotic species. Finally, if the continued preservation of native organisms in an area can be guaranteed, efforts can be made in trying to reintroduce eliminated native species back into the environment. This can be done by first determining which species were indigenous to the area, and then reintroducing them. This determination can be done using databases as the Encyclopedia_of_life, Global Biodiversity Information Facility, … Extermination is usually done with either (ecological) pesticides, or natural predators.

Strategies

As noted above (Distribution), biodiversity is not as rich everywhere on the planet. Regions as the tropics and subtropics are considerably much richer in biodiversity than regions in temperate climates. In addition, in temperate climates, a lot of countries are located which are already vastly urbanised, and require -in addition- great amounts of space for the growing of crops. As rehabilitating the biodiversity within these countries would again require the clearing and redeveloping of spaces, it has been proposed of some that efforts are best instead directed unto the tropics. Arguments include economics, it would be far less costly and more efficient to preserve the biodiversity in the tropics, especially as many countries in these areas are only now beginning to urbanise.[96]

However, only directing the efforts into these areas would not be enough, as many species still need to migrate at certain times of the year, requiring a connection to other regions/countries. In the more urbanised countries in temperate climates, this would mean that wildlife corridors need to be made. However, making wildlife corridors would still be considerably cheaper and easier than clearing/preserving entirely new areas.

Judicial status

A great deal of work is occurring to preserve the natural characteristics of Hopetoun Falls, Australia while continuing to allow visitor access.

Biodiversity is beginning to be evaluated and its evolution analysed (through observations, inventories, conservation…) as well as being taken into account in political and judicial decisions:

  • The relationship between law and ecosystems is very ancient and has consequences for biodiversity. It is related to property rights, both private and public. It can define protection for threatened ecosystems, but also some rights and duties (for example, fishing rights, hunting rights).
  • Law regarding species is a more recent issue. It defines species that must be protected because they may be threatened by extinction. The U.S. Endangered Species Act is an example of an attempt to address the “law and species” issue.
  • Laws regarding gene pools are only about a century old[citation needed]. While the genetic approach is not new (domestication, plant traditional selection methods), progress made in the genetic field in the past 20 years have led to a tightening of laws in this field. With the new technologies of genetic analysis and genetic engineering, people are going through gene patenting, processes patenting, and a totally new concept of genetic resources.[97] A very hot debate today seeks to define whether the resource is the gene, the organism itself, or its DNA.

The 1972 UNESCO World Heritage convention established that biological resources, such as plants, were the common heritage of mankind. These rules probably inspired the creation of great public banks of genetic resources, located outside the source-countries.

New global agreements (e.g.Convention on Biological Diversity), now give sovereign national rights over biological resources (not property). The idea of static conservation of biodiversity is disappearing and being replaced by the idea of dynamic conservation, through the notion of resource and innovation.

The new agreements commit countries to conserve biodiversity, develop resources for sustainability and share the benefits resulting from their use. Under new rules, it is expected that bioprospecting or collection of natural products has to be allowed by the biodiversity-rich country, in exchange for a share of the benefits.

Sovereignty principles can rely upon what is better known as Access and Benefit Sharing Agreements (ABAs). The Convention on Biodiversity spirit implies a prior informed consent between the source country and the collector, to establish which resource will be used and for what, and to settle on a fair agreement on benefit sharing. Bioprospecting can become a type of biopiracy when those principles are not respected.

Uniform approval for use of biodiversity as a legal standard has not been achieved, however. At least one legal commentator has argued that biodiversity should not be used as a legal standard, arguing that the multiple layers of scientific uncertainty inherent in the concept of biodiversity will cause administrative waste and increase litigation without promoting preservation goals. See Fred Bosselman, A Dozen Biodiversity Puzzles, 12 N.Y.U. Environmental Law Journal 364 (2004)

[edit] Analytical limits

[edit] Taxonomic and size bias

Less than 1% of all species that have been described have been studied beyond simply noting their existence.[98] Biodiversity researcher Sean Nee points out that the vast majority of Earth’s biodiversity is microbial, and that contemporary biodiversity physics is “firmly fixated on the visible world” (Nee uses “visible” as a synonym for macroscopic).[99] For example, microbial life is very much more metabolically and environmentally diverse than multicellular life (see extremophile). Nee has stated: “On the tree of life, based on analyses of small-subunit ribosomal RNA, visible life consists of barely noticeable twigs.

The size bias is not restricted to consideration of microbes. Entomologist Nigel Stork states that “to a first approximation, all multicellular species on Earth are insects”.[100] Even in insects, however, the extinction rate is high and indicative of the general trend of the sixth greatest extinction period that human society is faced with.[101][102] Moreover, there are species co-extinctions, such as plants and beetles, where the extinction or decline in one is reciprocated in the other.[103]

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