Patterns of Distribution of Amphibians

Patterns of Distribution of Amphibians

Global Distribution of Amphibians : Patterns , Conservation , and Future Challenges WILLIAM E. DUELLMAN Natural History Museum and Department of Ecology and Evolutionary Biology The University of Kansas Lawrence , Kansas 66045-2454 ...

Author: William E. Duellman

Publisher: JHU Press

ISBN: 0801861152

Category: Nature

Page: 660

View: 177

Sweet, University of California, Santa Barbara; Michael J. Tyler, University of Adelaide, Australia; Zhao Er-Mi, Chengdu Institute of Biology, Peoples Republic of China
Categories: Nature

Distribution Patterns of Reptiles and Amphibians in Puerto Rico

Distribution Patterns of Reptiles and Amphibians in Puerto Rico

This study examined the question of whether a big island can be divided into many smaller islands with the same pattern of area-species curve as that of the complete island.

Author: Minh Duc Le

Publisher:

ISBN: OCLC:43498468

Category: Amphibians

Page: 94

View: 213

This study examined the question of whether a big island can be divided into many smaller islands with the same pattern of area-species curve as that of the complete island. To address this question, this study used data on the number and distribution of amphibians and reptiles on Puerto Rico and landbridge islands of the Puerto Rican Bank, which were fragmented from the big island about 10,000 years ago. In Puerto Rico, the data show correlations between the number of species and area available at different elevation levels and between species and area after removing effects of elevation. These patterns are different from the patterns of correlation between area and the number of reptiles and amphibians on 29 islands on the Puerto Rican Bank. The area-species curves of the elevationally and areally subdivided "islands" on Puerto Rico tend to have steeper slopes than the curves of the Puerto Rican Bank islands. Analyses of area and the number of those species on fragmented habitat islands at different elevations also indicated correlation between them. However, patterns of correlation seem not to be the same at each altitude. The slope of the area-species curve seems to decrease with increasing elevation levels. Other patterns of species distribution of Puerto Rico's herpetofauna are: there are linear relationships between the number of species and elevation, the number of species and distance from the coast, and the number of species and the species range areas. Multiple regression analyses of three variables: area, precipitation, and elevation, suggested that variation of species distribution in Puerto Rico is partly caused by interactions among these variables. Elevation plays an especially important role in explaining reptile and amphibian distribution. The rainfall variable had the least effect on determining herpetofauna diversity. The study results suggest that area-species correlation is a consequence of habitat heterogeneity on the island.
Categories: Amphibians

Biogeographic Patterns of South American Anurans

Biogeographic Patterns of South American Anurans

This book analyzes different facets of anuran amphibian distribution in South America.

Author: Tiago S. Vasconcelos

Publisher: Springer Nature

ISBN: 9783030262969

Category: Science

Page: 149

View: 587

This book analyzes different facets of anuran amphibian distribution in South America. We integrate alternative biological metrics employing cutting-edge methods to understand the dynamic processes underlying species distribution patterns. By using the modern biogeographic toolbox, we explore how richness gradients, phylogenetic diversity, functional diversity, and range size/endemism distribution of amphibians vary along the continent. Moreover, we present a robust proposal for priority areas for conservation of anurans in South America that maximizes representativeness of distinct biodiversity facets.
Categories: Science

Catalogue of American Amphibians and Reptiles

Catalogue of American Amphibians and Reptiles

Author: American Society of Ichthyologists and Herpetologists. Herpetological Catalogue Committee

Publisher:

ISBN: UOM:49015002255561

Category: Reptiles

Page:

View: 996

Categories: Reptiles

Extinction in Our Times

Extinction in Our Times

Global distribution of amphibians: Patterns, conservation, and future challenges. In Patterns of Distribution of Amphibians: A Global Perspective, edited by W. E. Duellman. Baltimore: Johns Hopkins University Press. pp. 1–30.

Author: James P. Collins

Publisher: Oxford University Press on Demand

ISBN: 9780195316940

Category: Nature

Page: 273

View: 124

For over 350 million years, thousands of species of amphibians have lived on earth, but since the 1990s they have been disappearing at an alarming rate, in many cases quite suddenly and mysteriously. What is causing these extinctions? What role do human actions play in them? What do they tell us about the overall state of biodiversity on the planet? In Extinction in Our Times, James Collins and Martha Crump explore these pressing questions and many others as they document the first modern extinction event across an entire vertebrate class, using global examples that range from the Sierra Nevada of California to the rainforests of Costa Rica and the Mediterranean coast of North Africa. Joining scientific rigor and vivid storytelling, this book is the first to use amphibian decline as a lens through which to see more clearly the larger story of climate change, conservation of biodiversity, and a host of profoundly important ecological, evolutionary, ethical, philosophical, and sociological issues.
Categories: Nature

Amphibian Declines

Amphibian Declines

Amphibian species of the World : Additions and corrections . Museum of Natural History , Special Publication Number 21 , University of Kansas , Lawrence , Kansas . Duellman , W.E. ( Ed . ) . 1999. Patterns of Distribution of Amphibians ...

Author: Michael J. Lannoo

Publisher: Univ of California Press

ISBN: 0520235924

Category: Nature

Page: 1094

View: 777

Documents in comprehensive detail a major environmental crisis: rapidly declining amphibian populations and the disturbing developmental problems that are increasingly prevalent within many amphibian species.
Categories: Nature

Status of Conservation and Decline of Amphibians

Status of Conservation and Decline of Amphibians

Consequently, examination of patterns of contemporary distribution and richness at the familial or generic levels are more reliable sources of biogeographic history. Although currently disputed phylogenies leave the histories of many ...

Author: Harold Heatwole

Publisher: CSIRO PUBLISHING

ISBN: 9781486308392

Category: BUSINESS & ECONOMICS

Page: 248

View: 979

Amphibians are among the most threatened groups of animals on earth. In part due to their highly permeable skin, amphibians are highly sensitive to environmental changes and pollution and provide an early-warning system of deteriorating environmental conditions. The more we learn about the impact of environmental changes on amphibians, the better we as humans will be able to arrest their demise, and our own. Status of Conservation and Decline of Amphibians brings together the current knowledge on the status of the unique frogs of Australia, New Zealand, and the Pacific. Although geographically proximate, each region presents unique challenges and opportunities in amphibian research and conservation. This book contributes to an understanding of the current conservation status of the amphibians of each region, aims to stimulate research into halting amphibian declines, and provides a better foundation for making conservation decisions. It is an invaluable reference for environmental and governmental agencies, researchers, policy-makers involved with biodiversity conservation, and the interested public.
Categories: BUSINESS & ECONOMICS

The Ecology and Behavior of Amphibians

The Ecology and Behavior of Amphibians

Distribution patterns of amphibians in sub- Saharan Africa, Madagascar, and Seychelles. In Patterns of distribution of amphibians. A global perspective, ed. W. E. Duellman, 483–539. Baltimore: Johns Hopkins University Press. ———.

Author: Kentwood D. Wells

Publisher: University of Chicago Press

ISBN: 0226893340

Category: Science

Page: 1400

View: 193

Consisting of more than six thousand species, amphibians are more diverse than mammals and are found on every continent save Antarctica. Despite the abundance and diversity of these animals, many aspects of the biology of amphibians remain unstudied or misunderstood. The Ecology and Behavior of Amphibians aims to fill this gap in the literature on this remarkable taxon. It is a celebration of the diversity of amphibian life and the ecological and behavioral adaptations that have made it a successful component of terrestrial and aquatic ecosystems. Synthesizing seventy years of research on amphibian biology, Kentwood D. Wells addresses all major areas of inquiry, including phylogeny, classification, and morphology; aspects of physiological ecology such as water and temperature relations, respiration, metabolism, and energetics; movements and orientation; communication and social behavior; reproduction and parental care; ecology and behavior of amphibian larvae and ecological aspects of metamorphosis; ecological impact of predation on amphibian populations and antipredator defenses; and aspects of amphibian community ecology. With an eye towards modern concerns, The Ecology and Behavior of Amphibians concludes with a chapter devoted to amphibian conservation. An unprecedented scholarly contribution to amphibian biology, this book is eagerly anticipated among specialists.
Categories: Science

Amphibian Ecology and Conservation

Amphibian Ecology and Conservation

If amphibians disappeared, would the world be overrun with houseflies, mosquitoes, and crop-eating insect pests? Would their predators go extinct? ... Patterns of Distribution of Amphibians: a Global Perspective, pp. 1–30.

Author: C. Kenneth Dodd

Publisher: Oxford University Press

ISBN: 9780199541188

Category: Nature

Page: 556

View: 506

Describes the latest methodologies used to study the ecology of amphibians throughout the world. Each of the 27 chapters explains a research approach or technique, with emphasis on careful planning and the potential biases of techniques. Statistical modelling, landscape ecology, and disease are covered for the first time in a techniques handbook.
Categories: Nature