Species-specific responses to wetland mitigation among amphibians in the Greater Yellowstone Ecosystem

Restoration Ecology
By: , and 

Links

Abstract

Habitat loss and degradation are leading causes of biodiversity declines, therefore assessing the capacity of created mitigation wetlands to replace habitat for wildlife has become a management priority. We used single season occupancy models to compare the occurrence of larvae of four species of pond‐breeding amphibians in wetlands created for mitigation, wetlands impacted by road construction, and unimpacted reference wetlands along a highway corridor in the Greater Yellowstone Ecosystem, United States. Created wetlands were shallow and had less aquatic vegetation and surface area than impacted and reference wetlands. Occupancy of barred tiger salamander (Ambystoma mavortium) and boreal chorus frog (Pseudacris maculata) larvae was similar across wetland types, whereas boreal toads (Anaxyrus boreas) occurred more often in created wetlands than reference and impacted wetlands. However, the majority of created wetlands (>80%) dried partially or completely before amphibian metamorphosis occurred in both years of our study, resulting in heavy mortality of larvae and, we suspect, little to no recruitment. Columbia spotted frogs (Rana luteiventris), which require emergent vegetation that is not common in newly created wetlands, occurred commonly in impacted and reference wetlands but were found in only one created wetland. Our results show that shallow created wetlands with little aquatic vegetation may be attractive breeding areas for some amphibians, but may result in high mortality and little recruitment if they fail to hold water for the entire larval period.

Study Area

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Species-specific responses to wetland mitigation among amphibians in the Greater Yellowstone Ecosystem
Series title Restoration Ecology
DOI 10.1111/rec.13031
Volume 28
Issue 1
Year Published 2020
Language English
Publisher Wiley
Contributing office(s) Fort Collins Science Center, Northern Rocky Mountain Science Center
Description 9 p.
First page 206
Last page 214
Country United States
Other Geospatial Yellowstone
Google Analytic Metrics Metrics page