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Date:5/17/2013

timing of water in ponds that they depend on. The full review of species' responses was published in March 2013 edition of the journal Biology.

Drought and declining salamanders

Knowing that each species responds to droughts and deluges based on the particulars of their biology, scientists set out to test just how these dynamics played out in the southeastern U.S. by looking at larval mole salamanders in small isolated ponds in St. Mark's National Wildlife Refuge, Florida.

Larval mole salamanders have a similar life cycle to the flatwoods salamander, a federally threatened species found on the refuge. Because it is difficult to study the flatwoods salamander directly, and mole salamanders are ecologically similar, scientists study the mole salamander instead, knowing that whatever affects them will likely impact the flatwoods salamander as well.

In the four years of the study, drought consistently decreased salamander occupancy in ponds. To support young salamanders, rain has to fill a pond during the breeding season and then the pond has to stay filled long enough for larvae to transform into the next life stage. Therefore, scientists confirmed that drought did indeed cause short-term declines in mole salamanders suggesting that the listed flatwoods salamander may face a similar fate under climate change.

The results of the mole salamander study are published in the April 2013 edition of the journal Wetlands.

Can habitat conservation make a difference for frogs and toads?

To answer this question, USGS scientists examined whether the U.S. Department of Agriculture's Natural Resources Conservation Service Wetlands Reserve Program was helping address the problem. The Wetlands Reserve Program is a voluntary USDA program offering landowners the opportunity to protect, restore, and enhance wetlands on their property. To assess the potential benefit of WRP restoration to amphi
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Contact: hannah hamilton
hhamilton@usgs.gov
703-648-4356
United States Geological Survey
Source:Eurekalert

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