EXTINCTION SPACE—A METHOD FOR THE QUANTIFICATION AND CLASSIFICATION OF CHANGES IN MORPHOSPACE ACROSS EXTINCTION BOUNDARIES
EXTINCTION SPACE—A METHOD FOR THE QUANTIFICATION AND CLASSIFICATION OF CHANGES IN MORPHOSPACE ACROSS EXTINCTION BOUNDARIES
复制标题
灭绝空间对跨越灭绝边界的形态空间变化进行量化和分类的方法
DOI:
10.1111/evo.12162
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发表时间:
2013
期刊:
影响因子:
3.3
通讯作者:
Walton
中科院分区:
文献类型:
--
作者:
Hopkins;Walton
Three main modes of extinction are responsible for reductions in morphological disparity: (1) random (caused by a nonselective extinction event); (2) marginal (a symmetric, selective extinction event trimming the margin of morphospace); and (3) lateral (an asymmetric, selective extinction event eliminating one side of the morphospace). These three types of extinction event can be distinguished from one another by comparing changes in three measures of morphospace occupation: (1) the sum of range along the main axes; (2) the sum of variance; and (3) the position of the centroid. Computer simulations of various extinction events demonstrate that the pre-extinction distribution of taxa (random or normal) in the morphospace has little influence on the quantification of disparity changes, whereas the modes of the extinction events play the major role. Together, the three disparity metrics define an “extinction-space” in which different extinction events can be directly compared with one another. Application of this method to selected extinction events (Frasnian-Famennian, Devonian-Carboniferous, and Permian-Triassic) of the Ammonoidea demonstrate the similarity of the Devonian events (selective extinctions) but the striking difference from the end-Permian event (nonselective extinction). These events differ in their mode of extinction despite decreases in taxonomic diversity of similar magnitude.
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DOI:
--
发表时间:
2007
期刊:
影响因子:
--
作者:
R. Twitchett
通讯作者:
R. Twitchett
DOI:
--
发表时间:
1989
期刊:
影响因子:
--
作者:
R. T. Becker;R. Feist;G. Flajs;M. House;G. Klapper
通讯作者:
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DOI:
10.1073/pnas.0535132100
发表时间:
2003
影响因子:
11.1
作者:
R. Lockwood
通讯作者:
R. Lockwood
DOI:
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发表时间:
1974
期刊:
影响因子:
--
作者:
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通讯作者:
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DOI:
10.1016/j.palaeo.2010.04.023
发表时间:
2010
期刊:
Palaeogeography, Palaeoclimatology, Palaeoecology
影响因子:
--
作者:
Marc S. Simon;D. Korn;S. Koenemann
通讯作者:
S. Koenemann