Download or read book Population Dynamics of the Natterjack Toad Bufo Calamita in a Fragmented Pond Complex South West Ireland written by Aurélie Emily Aubry and published by . This book was released on 2009 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: The thesis documented and explored empirical data on populations of natterjack toads (Bufo calamita Laurenti), a pond-breeding amphibian particularly vulnerable to climate change, habitat degradation and fragmentation. The research used data collected in the field (census and environmental data, mark-recapture study) to assess the spatiotemporal dynamics of toad populations at local (2-5km) and regional (>10km) scales, to identify the local environmental determinants of toad breeding activity and success and to assess the movement patterns of juvenile and adult toads within and between breeding sites. There was no synchrony in the toad breeding activity and success at the local level, suggesting that populations function as individual clusters independent of each other, with little or irregular dispersal among populations. Regional synchrony in both rainfall and temperature probably explain the observed regional synchrony in the number of egg strings (used as a surrogate for adult breeding female population size). Using a model selection approach, results indicated that the abundance and diversity of predators of tadpoles were the most influential factors on toad reproductive success. A 46-day mesocosm experiment indicated that the presence of B. calamita tadpoles and their predators (here the dragonfly Sympetrum striolatum larvae) could enhance the functioning of pond ecosystems through both direct and indirect effects, in particular through increases in decomposition rates and enhanced secondary production. Several aspects of the research suggested that some of the toad populations were structured as source-sink populations, where the viability of local populations in sink habitats relies on immigration from source areas. The maintenance of a network of ponds within the dispersal range of species is therefore essential to ensure the long-term viability of amphibian populations, especially for those species (e.g. B. calamita) breeding in temporary ponds.
Download or read book The Natterjack Toad written by Trevor John Clark Beebee and published by . This book was released on 1983 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dispersal in the Natterjack Toad a Species with a Fragmented Distribution written by Virginie Stevens and published by . This book was released on 2006 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Population Dynamics of the Natterjack Toad Bufo Calamita Laur in the North Merseyside Sand dune System written by C. A. Davis and published by . This book was released on 1985 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Natterjack Toad written by and published by . This book was released on 1978 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monitoring the Conservation Status of Natterjack Toad Bufo Calamita in Ireland 2004 2006 written by Emeline Bécart and published by . This book was released on 2007 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Terrestrial Ecology of the Natterjack Bufo Calamita Laurenti and the Common Toad Bufo Bufo Linnaeus written by Jonathan Simon Denton and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Conservation of an Endangered Amphibian written by Marina Reyne and published by . This book was released on 2021 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A study of the factors determining the suitability of artificially constructed breeding sites for the natterjack toad Bufo calamita at the Ainsdale National Nature Reserve written by K M. AITCHISON and published by . This book was released on 1981 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Conservation Status of Bufo Calamita Laurenti Natterjack Toad in Ireland and Effects of Land use written by Emeline Becart and published by . This book was released on 2008 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Natterjack Toad written by J. S. Denton and published by . This book was released on 1995 with total page 49 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Genetic Structure of Natterjack Toad Bufo Calamita Populations and the Role of the River written by Petra Ramseier and published by . This book was released on 2000 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Population Dynamics of the Western Toad Bufo Boreas Halophilus at Hidden Lake Mt San Jacinto State Park written by Michael B. Sornborger and published by . This book was released on 1979 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Adaptation to a Variable Environment written by Lee Damien Brady and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Natterjack Toad Bufo Calamita written by Scottish Natural Heritage (Agency) and published by . This book was released on 1996* with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Density related features of natterjack toad Bufo calamita populations in Britain written by J. S. Denton and published by . This book was released on 1993 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Natterjack Toad written by English Nature (Agency) and published by . This book was released on 1992-01-01 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:
