Demographic consequences of terrestrial habitat loss for pool-breeding amphibians: predicting extinction risks associated with inadequate size of buffer zones

Conservation Biology : the Journal of the Society for Conservation Biology
Elizabeth B HarperRaymond D Semlitsch

Abstract

Much of the biodiversity associated with isolated wetlands requires aquatic and terrestrial habitat to maintain viable populations. Current federal wetland regulations in the United States do not protect isolated wetlands or extend protection to surrounding terrestrial habitat. Consequently, some land managers, city planners, and policy makers at the state and local levels are making an effort to protect these wetland and neighboring upland habitats. Balancing human land-use and habitat conservation is challenging, and well-informed land-use policy is hindered by a lack of knowledge of the specific risks of varying amounts of habitat loss. Using projections of wood frog (Rana sylvatica) and spotted salamander (Ambystoma maculatum) populations, we related the amount of high-quality terrestrial habitat surrounding isolated wetlands to the decline and risk of extinction of local amphibian populations. These simulations showed that current state-level wetland regulations protecting 30 m or less of surrounding terrestrial habitat are inadequate to support viable populations of pool-breeding amphibians. We also found that species with different life-history strategies responded differently to the loss and degradation of terrestrial h...Continue Reading

References

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Citations

Mar 2, 2010·The Journal of Experimental Biology·T B HayesM Stice
Oct 25, 2012·Ecological Applications : a Publication of the Ecological Society of America·J D WillsonB D Todd
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Feb 26, 2016·Ecological Applications : a Publication of the Ecological Society of America·Elizabeth B HarperJames P Gibbs
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