Monitoring And Modeling The Viability Of The Columbia Spotted Frog Rana Luteiventris
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Monitoring And Modeling The Viability Of The Columbia Spotted Frog Rana Luteiventris
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Author : Sean M. Blomquist
language : en
Publisher:
Release Date : 2000
Monitoring And Modeling The Viability Of The Columbia Spotted Frog Rana Luteiventris written by Sean M. Blomquist and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with Columbia spotted frog categories.
Population Dynamics Of The Columbia Spotted Frog Rana Luteiventris
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Author : Rebecca Marie Wahl McCaffery
language : en
Publisher:
Release Date : 2010
Population Dynamics Of The Columbia Spotted Frog Rana Luteiventris written by Rebecca Marie Wahl McCaffery and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with Electronic dissertations categories.
Worldwide extinctions of amphibians are at the forefront of the biodiversity crisis, with climate change figuring prominently as a potential driver of continued amphibian decline. Changes in both the mean and variability of climate conditions may affect amphibian populations in complex, unpredictable ways. However, few studies have evaluated effects of climate change on individual vital rates and subsequent population dynamics of amphibians. I investigated the population dynamics of a high elevation population of the Columbia spotted frog (Rana luteiventris) in relation to climate variation over a ten-year period. I documented an increase in survival and breeding probability as severity of winter decreased. Therefore, a warming climate with less severe winters is likely to promote population viability in this montane frog population. More generally, amphibians and other ectotherms inhabiting alpine or boreal habitats at or near their thermal ecological limits may benefit from the milder winters provided by a warming climate as long as suitable habitats remain intact. I then used Bayesian models to demonstrate that changes in mean snowpack had a greater effect on viability than changes in the variance of snowpack. In general, future decreases in mean snowpack increase population viability, and increases in variability have little effect. Finally, I examined whether heterogeneity in pond hydroperiod on the landscape had the potential to stabilize recruitment and population dynamics. Overall, ponds with different hydroperiods showed contrasting dynamics among years. Variability in recruitment was lowest in the scenario with the greatest pond heterogeneity, suggesting that the presence of a diversity of hydroperiods on the landscape may reduce variability in amphibian recruitment. Through my research, I have been able to determine relationships between climate variables and vital rates in the Columbia spotted frog, and then use population models to explore how future changes in climate or habitat could affect the viability of this population. These results add to our understanding of how climate variation may influence Rana luteiventris dynamics in montane environments, but also provide a demographic backdrop for determining which factors might affect other amphibian populations and species in diverse mountain environments.
Columbia Spotted Frog Rana Luteiventris Population Monitoring Summary
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Author :
language : en
Publisher:
Release Date : 2003
Columbia Spotted Frog Rana Luteiventris Population Monitoring Summary written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with Columbia spotted frog categories.
Columbia Spotted Frog Rana Luteiventris Statewide Monitoring Summary 2009
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Author : Christopher P. Crockett
language : en
Publisher:
Release Date : 2010
Columbia Spotted Frog Rana Luteiventris Statewide Monitoring Summary 2009 written by Christopher P. Crockett and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with Columbia spotted frog categories.
Columbia Spotted Frog Rana Luteiventris Population Monitoring Summary
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Author : Kevin K. Wheeler
language : en
Publisher:
Release Date : 2003
Columbia Spotted Frog Rana Luteiventris Population Monitoring Summary written by Kevin K. Wheeler and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with Columbia spotted frog categories.
Columbia Spotted Frog Rana Luteiventris Population Monitoring Summary
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Author :
language : en
Publisher:
Release Date : 2003
Columbia Spotted Frog Rana Luteiventris Population Monitoring Summary written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with Columbia spotted frog categories.
Columbia Spotted Frog Rana Luteiventris Monitoring Summary
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Author : Kristine W. Wilson
language : en
Publisher:
Release Date : 2004*
Columbia Spotted Frog Rana Luteiventris Monitoring Summary written by Kristine W. Wilson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004* with Columbia spotted frog categories.
Columbia Spotted Frog Rana Luteiventris Population Monitoring Summary
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Author :
language : en
Publisher:
Release Date : 2001
Columbia Spotted Frog Rana Luteiventris Population Monitoring Summary written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with Columbia spotted frog categories.
Columbia Spotted Frog Rana Luteiventris Population Monitoring Summary
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Author :
language : en
Publisher:
Release Date : 2005
Columbia Spotted Frog Rana Luteiventris Population Monitoring Summary written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with Columbia spotted frog categories.
Columbia Spotted Frog Rana Luteiventris Population Monitoring Summary
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Author : Kristine W. Wilson
language : en
Publisher:
Release Date : 2001
Columbia Spotted Frog Rana Luteiventris Population Monitoring Summary written by Kristine W. Wilson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with Animal populations categories.