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DOI	10.1016/j.palaeo.2019.109414
	The effect of geographic range and climate on extinction risk in the deep-time amphibian fossil record
	Tietje M.; Rödel M.-O.; Schobben M.
发表日期	2020
ISSN	0031-0182
卷号	537
英文摘要	Geographic range is of crucial importance concerning the extinction risk of species. However, our understanding of how the influence of this trait on extinction risk has varied through Earth history and across different climate regimes is still rather unexplored. This is especially true for taxa that are currently of strong interest in conservation biology, displaying a strong mismatch between paleontological studies and modern efforts to quantify the extinction risk of threatened species. We herein calculated a continuous measure for the connection of geographic range and extinction risk in the deep-time amphibian fossil record. Furthermore, we evaluated the impact of climate on this connection, using two climate proxies derived from oxygen isotope data (global relative temperature change and variations in the latitudinal temperature gradient). We show that geographic ranges tended to be larger during times of comparatively small latitudinal temperature gradients. Moreover, the strength of geographic range influencing extinction risk fluctuated temporally, but remained positive at all times. The variation in range size impact on extinction risk showed a strong connection with the latitudinal temperature gradient. Our findings indicate that geographic range persists as a factor influencing species’ extinction risk through all times. However, geographic range seemed less important during times of higher environmental variability. Reasons might be the restriction of species ranges due to environmental constraints, causing ranges to become more similar and therefore lose relative importance in buffering for extinction risk, while other factors gain in importance. Simultaneously, similar ranges might be more prone to alteration by e.g. conservation biases (related to sedimentary deposition and fossilization) in relation to their real range size, resulting in a smaller signal-to-noise ratio, potentially affecting the correlation strength. We show that trait-extinction risk dynamics can vary in their intensity, and that specifically the observed impact of geographic range on extinction risk can vary with climatic changes. © 2019 Elsevier B.V.
英文关键词	Environmental variability; Latitudinal gradient; Oxygen isotopes; Temporal stability; Traits
语种	英语
scopus关键词	amphibian; buffering; climate effect; extinction risk; fossil record; Granger causality test; oxygen isotope; proxy climate record; signal-to-noise ratio; temperature gradient; temporal variation; Amphibia
来源期刊	Palaeogeography, Palaeoclimatology, Palaeoecology
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/150737
作者单位	Museum für Naturkunde, Leibniz Institute for Research on Evolution and Biodiversity, Invalidenstr. 43, Berlin, 10115, Germany; Berlin-Brandenburg Institute of Advanced Biodiversity Research (BBIB), Berlin, Germany; Utrecht University, Department of Earth Sciences, Princetonlaan 8A, Utrecht, 3584 CB, Netherlands
推荐引用方式 GB/T 7714	Tietje M.,Rödel M.-O.,Schobben M.. The effect of geographic range and climate on extinction risk in the deep-time amphibian fossil record[J],2020,537.
APA	Tietje M.,Rödel M.-O.,&Schobben M..(2020).The effect of geographic range and climate on extinction risk in the deep-time amphibian fossil record.Palaeogeography, Palaeoclimatology, Palaeoecology,537.
MLA	Tietje M.,et al."The effect of geographic range and climate on extinction risk in the deep-time amphibian fossil record".Palaeogeography, Palaeoclimatology, Palaeoecology 537(2020).