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DOI | 10.1073/pnas.1815014116 |
Species delimitation in endangered groundwater salamanders: Implications for aquifer management and biodiversity conservation | |
Devitt, Thomas J.1,2,3; Wright, April M.1,2,4; Cannatella, David C.1,2; Hillis, David M.1,2 | |
发表日期 | 2019 |
ISSN | 0027-8424 |
卷号 | 116期号:7页码:2624-2633 |
英文摘要 | Groundwater-dependent species are among the least-known components of global biodiversity, as well as some of the most vulnerable because of rapid groundwater depletion at regional and global scales. The karstic Edwards-Trinity aquifer system of west-central Texas is one of the most species-rich groundwater systems in the world, represented by dozens of endemic groundwater-obligate species with narrow, naturally fragmented distributions. Here, we examine how geomorphological and hydrogeological processes have driven population divergence and speciation in a radiation of salamanders (Eurycea) endemic to the Edwards-Trinity system using phylogenetic and population genetic analysis of genome-wide DNA sequence data. Results revealed complex patterns of isolation and reconnection driven by surface and subsurface hydrology, resulting in both adaptive and nonadaptive population divergence and speciation. Our results uncover cryptic species diversity and refine the borders of several threatened and endangered species. The US Endangered Species Act has been used to bring state regulation to unrestricted groundwater withdrawals in the Edwards (Balcones Fault Zone) Aquifer, where listed species are found. However, the Trinity and Edwards-Trinity (Plateau) aquifers harbor additional species with similarly small ranges that currently receive no protection from regulatory programs designed to prevent groundwater depletion. Based on regional climate models that predict increased air temperature, together with hydrologic models that project decreased spring-flow, we conclude that Edwards-Trinity salamanders and other codistributed groundwater-dependent organisms are highly vulnerable to extinction within the next century. |
WOS研究方向 | Science & Technology - Other Topics |
来源期刊 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/93393 |
作者单位 | 1.Univ Texas Austin, Dept Integrat Biol, Austin, TX 78712 USA; 2.Univ Texas Austin, Biodivers Ctr, Austin, TX 78712 USA; 3.City Austin, Watershed Protect Dept, Austin, TX 78704 USA; 4.Southeastern Louisiana Univ, Dept Biol Sci, Hammond, LA 70402 USA |
推荐引用方式 GB/T 7714 | Devitt, Thomas J.,Wright, April M.,Cannatella, David C.,et al. Species delimitation in endangered groundwater salamanders: Implications for aquifer management and biodiversity conservation[J],2019,116(7):2624-2633. |
APA | Devitt, Thomas J.,Wright, April M.,Cannatella, David C.,&Hillis, David M..(2019).Species delimitation in endangered groundwater salamanders: Implications for aquifer management and biodiversity conservation.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,116(7),2624-2633. |
MLA | Devitt, Thomas J.,et al."Species delimitation in endangered groundwater salamanders: Implications for aquifer management and biodiversity conservation".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 116.7(2019):2624-2633. |
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