跳至內容

File:Extinction Intensity.svg

頁面內容不支援其他語言。
這個檔案來自維基共享資源
維基百科,自由的百科全書

原始檔案 (SVG 檔案,表面大小:577 × 428 像素,檔案大小:194 KB)


描述 A hand made lookalike for User:Dragons flight's PNG image Image:Extinction Intensity.png at en.wikipedia.
日期 (UTC)
來源 自己的作品
作者 Rursus
授權許可
(重用此檔案)
GNU head 已授權您依據自由軟體基金會發行的無固定段落、封面文字和封底文字GNU自由文件授權條款1.2版或任意後續版本,對本檔進行複製、傳播和/或修改。該協議的副本列在GNU自由文件授權條款中。
w:zh:共享創意
姓名標示 相同方式分享
此檔案採用共享創意 姓名標示-相同方式分享 3.0 未在地化版本授權條款。
您可以自由:
  • 分享 – 複製、發佈和傳播本作品
  • 重新修改 – 創作演繹作品
惟需遵照下列條件:
  • 姓名標示 – 您必須指名出正確的製作者,和提供授權條款的連結,以及表示是否有對內容上做出變更。您可以用任何合理的方式來行動,但不得以任何方式表明授權條款是對您許可或是由您所使用。
  • 相同方式分享 – 如果您利用本素材進行再混合、轉換或創作,您必須基於如同原先的相同或兼容的條款,來分布您的貢獻成品。
已新增授權條款標題至此檔案,作為GFDL授權更新的一部份。
inherited from Dragons flight
其他版本

摘要

Total Phanerozoic biodiversity during the same interval. Note that this is a result of changes in both the rate of extinctions and the rate of new originations. The Dresbachian extinction event in particular is obscured by nearly immediate replacement with new genera.

This figure shows the genus extinction intensity, i.e. the fraction of genera that are present in each interval of time but do not exist in the following interval. The data itself is taken from Rohde & Muller (2005, Supplementary Material), and are based on the Sepkoski's Compendium of Marine Fossil Animal Genera (2002). The yellow line is a cubic polynomial to show the long-term trend. Note that these data do not represent all genera that have ever lived, but rather only a selection of marine genera whose qualities are such that they are easily preserved as fossils.

NO MAS AL MALTRATO ANIMAL:

Lo que podemos entender no es posible que ya hace tiempo esto sucedió en mas de mil muertes de animales inocentes , debemos parar ante esto, debemos ayudar también al medio ambiente , gracias a ello , vemos que da vida a todos no solo a los bellos animales que hay en el mundo , nosotros mismos debemos cambiar esto cuidemos el medio ambiente y no al maltrato animal.

The "Big Five" mass extinctions (Raup & Sepkoski 1982) are labeled in large font, and a variety of other features are labeled in smaller font. The two extinction events occurring in the Cambrian (i.e. Dresbachian and Botomian) are very large in percentage magnitude, but are not well known because of the relative scarcity of fossil-producing life at that time (i.e. they are small in absolute numbers of known taxa). The Middle Permian extinction is now argued by many to constitute a distinct extinction horizon, though the actual extinction amounts are sometimes lumped together with the End Permian extinctions in reporting. As indicated, the "Late Devonian" extinction is actually resolvable into at least three distinct events spread over a period of ~40 million years. As these data are derived at the genus level, one can anticipate that the number of species extinctions is a higher percentage than shown here.

Many of the extinction events appear to be somewhat extended in time. In at least some cases this is the result of a paleontological artifact known as the Signor-Lipps effect (Signor & Lipps 1982). Briefly, this is the observation that inadequate sampling can cause a taxon to seem to disappear before its actual time of extinction. This has the effect of making an extinction event appear extended even if it occurred quite rapidly. Hence, when estimating the true magnitude of an extinction event it would be common to combine together the events occurring over several preceding bins as long as they also show excess extinctions. This explains why many estimates of the magnitude of an extinction event may be larger than the 20-30% shown as the largest single bin for most of the extinctions shown here.

References

  • Raup, D. & Sepkoski, J. (1982). "Mass extinctions in the marine fossil record". Science 215: 1501–1503.
  • Rohde, R.A. & Muller, R.A. (2005). "Cycles in fossil diversity". Nature 434: 209-210.
  • Sepkoski, J. (2002) A Compendium of Fossil Marine Animal Genera (eds. Jablonski, D. & Foote, M.) Bull. Am. Paleontol. no. 363 (Paleontological Research Institution, Ithaca, NY).
  • Signor, P. and J. Lipps (1982) "Sampling bias, gradual extinction patterns and catastrophes in the fossil record", in Geologic Implications of Impacts of Large Asteroids and Comets on the Earth, I. Silver and P. Silver Eds, Geol. Soc. Amer. Special Paper 190, Boulder Colo. p. 291-296.

說明

添加單行說明來描述出檔案所代表的內容

在此檔案描寫的項目

描繪內容

創作作者 Chinese (Hong Kong) (已轉換拼寫)

沒有維基數據項目的某些值

作者姓名字串 繁體中文 (已轉換拼寫):​Rursus
維基媒體使用者名稱 繁體中文 (已轉換拼寫):​Rursus

著作權狀態 繁體中文 (已轉換拼寫)

有著作權 繁體中文 (已轉換拼寫)

共享創意署名-相同方式共享3.0Unported Chinese (Hong Kong) (已轉換拼寫)

GNU自由文檔許可證1.2或更高版本 繁體中文 (已轉換拼寫)

檔案來源 Chinese (Taiwan) (已轉換拼寫)

上傳者的原創作品 繁體中文 (已轉換拼寫)

檔案歷史

點選日期/時間以檢視該時間的檔案版本。

日期/時間縮⁠圖尺寸用戶備⁠註
目前2007年12月6日 (四) 20:03於 2007年12月6日 (四) 20:03 版本的縮圖577 × 428(194 KB)RursusFont and outline fixes
2007年12月6日 (四) 19:55於 2007年12月6日 (四) 19:55 版本的縮圖577 × 428(55 KB)Rursus{{Information |Description=A hand made lookalike for the PNG image Image:Extinction Intensity.png at en.wikipedia. |Source=self-made |Date=~~~~~ |Author=Rursus |Permission={{GFDL}} inherited from Dragons flight |oth

全域檔案使用狀況

以下其他 wiki 使用了這個檔案: