Dramatic Declines in Neotropical Salamander Populations Are an Important Part of the Global Amphibian Crisis

Dramatic Declines in Neotropical Salamander Populations Are an Important Part of the Global Amphibian Crisis

We document major declines of many species of salamanders at several sites in Central America and Mexico, with emphasis on the San Marcos region of Guatemala, one of the best studied and most diverse salamander communities in the Neotropics. Profound declines of several formerly abundant species, in...

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Veröffentlicht in:Proceedings of the National Academy of Sciences of the United States of America. - National Academy of Sciences of the United States of America. - 106(2009), 9, Seite 3231-3236
1. Verfasser: Rovito, Sean M. (VerfasserIn)
Weitere Verfasser: Parra-Olea, Gabriela, Vásquez-Almazán, Carlos R., Papenfuss, Theodore J., Wake, David B.
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2009
Zugriff auf das übergeordnete Werk:Proceedings of the National Academy of Sciences of the United States of America
Schlagworte:climate change elevational transect Guatemala Mexico Plethodontidae Biological sciences Social sciences Environmental studies Physical sciences
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520 |a We document major declines of many species of salamanders at several sites in Central America and Mexico, with emphasis on the San Marcos region of Guatemala, one of the best studied and most diverse salamander communities in the Neotropics. Profound declines of several formerly abundant species, including 2 apparent extinctions, are revealed. Terrestrial microhabitat specialists at mid- to high elevations have declined more than microhabitat generalists. These terrestrial microhabitat specialists have largely disappeared from multiple sites in western Guatemala, including in well-protected areas, suggesting that the phenomenon cannot be explained solely by localized habitat destruction. Major declines in southern Mexican plethodontid salamanders occurred in the late 1970s to early 1980s, concurrent with or preceding many reported frog declines. The species in decline comprise several major evolutionary lineages of tropical salamanders, underscoring that significant portions of the phylogenetic diversity of Neotropical salamanders are at risk. Our results highlight the urgent need to document and understand Neotropical salamander declines as part of the larger effort to conserve global amphibian diversity. 
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