Undescribed species have higher extinction risk than known species

被引:72
作者
Liu, Jiajia [1 ]
Slik, Ferry [2 ]
Zheng, Shilu [1 ]
Lindenmayer, David B. [3 ]
机构
[1] Fudan Univ, Inst Biodivers Sci, MOE Key Lab Biodivers Sci & Ecol Engn, Sch Life Sci, Shanghai, Peoples R China
[2] Univ Brunei Darussalam, Environm & Life Sci Dept, Fac Sci, Seri Begawan, Brunei
[3] Australian Natl Univ, Fenner Sch Environm & Soc, Canberra, ACT, Australia
来源
CONSERVATION LETTERS | 2022年 / 15卷 / 03期
基金
中国国家自然科学基金;
关键词
description date; extinction risk; new species; threatened species; undescribed species; MODEL SELECTION; HIGH-RATES; CONSERVATION; DISCOVERIES; CARNIVORES; ECOLOGY; DATES;
D O I
10.1111/conl.12876
中图分类号
X176 [生物多样性保护];
学科分类号
090705 ;
摘要
Newly discovered species are often threatened with extinction but in many cases have received limited conservation effort. To guide future conservation, it is important to determine the extinction risk of newly described species. Here, we test how time since formal description of a species is linked to its threat status to obtain a better insight into the possible threat status of newly described species and as yet undescribed species. We compiled IUCN Red List data for 53,808 species from five vertebrate groups described since 1758. Extinction risk for more recently described species has increased significantly over time; the proportion of threatened species among newly described species has increased from 11.9% for species described between 1758 and 1767 to 30.0% for those described between 2011 and 2020. Based on projections from our analysis, this could further increase to 47.1% by 2050. The pattern is consistent across vertebrate taxonomic groups and biomes. Current species extinction rates estimated from data of all known species are therefore highly likely to be underestimated. Intensive fieldwork to boost discovery of new species and immediate conservation action for newly described species, especially in tropical areas, is urgently required.
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页数:8
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