Freshwater wetlands provide critical habitat for a diverse array of organisms including many amphibians. Yet, under the continued impacts of water diversions and the newer threats of climate change, these habitats are among the most imperiled ecosystems on Earth. Climate change has the potential to alter many sources of water critical to the habitats amphibians need, especially those associated with breeding and development. Potential changes include: change in timing and availability of water from glacier melt, snow and rain timing and amount; persistence of vernal pools and seasonal wetlands; altered evapotranspiration rates; and reduced stream flows and groundwater recharge rates.
Other ecosystem components likely to change in response to climate change include the timing and frequency of fires, the spread of invasive plants and animals, and microclimates in which the animals live.
Climate Change - ARMI Papers & Reports
Papers & Reports Changes in capture rates and body size among vertebrate species occupying an insular urban habitat reserve
Papers & Reports Effects of Snowpack, Temperature, and Disease on Demography in a Wild Population of Amphibians
Papers & Reports Amphibian responses in the aftermath of extreme climate events
of the century. One major factor that will contribute to these extinctions is extreme climatic events.
Here, we show the ecological impacts of recent record warm air temperatures and simultaneous peak
drought conditions in California. From 2008–2016, the southern populations of a wide-ranging endemic
amphibian (the California newt, Taricha torosa) showed a 20% reduction to mean body condition and
significant losses to variation in body condition linked with extreme climate deviations. However,
body condition in northern populations remained relatively unaffected during this period. Range-wide
population estimates of change to body condition under future climate change scenarios within the
next 50 years suggest that northern populations will mirror the loss of body condition recently observed
in southern populations. This change is predicated on latter 21st century climate deviations that
resemble recent conditions in Southern California. Thus, the ecological consequences of climate change
have already occurred across the warmer, drier regions of Southern California, and our results suggest
that predicted climate vulnerable regions in the more mesic northern range likely will not provide
climate refuge for numerous amphibian communities.
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