Download or read book The Ecology of Native Tadpoles rana Boylii and Hyla Regilla and the Impact of Invading Bullfrogs rana Catesbeiana in a Northern California River written by Sarah Julia Kupferberg and published by . This book was released on 1996 with total page 606 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Delta Mendota Canal California Aqueduct Intertie Central Valley Project written by and published by . This book was released on 2009 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Marin Sonoma Narrows MSN HOW Widening Project Marin and Sonoma Counties written by and published by . This book was released on 2009 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Golden Gate National Recreation Area Fire Management Plan written by and published by . This book was released on 2005 with total page 786 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Amphibian Declines written by Michael Lannoo and published by Univ of California Press. This book was released on 2005-06-15 with total page 1117 pages. Available in PDF, EPUB and Kindle. Book excerpt: This benchmark volume 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. Horror stories on this topic have been featured in the scientific and popular press over the past fifteen years, invariably asking what amphibian declines are telling us about the state of the environment. Are declines harbingers of devastated ecosystems or simply weird reflections of a peculiar amphibian world? This compendium—presenting new data, reviews of current literature, and comprehensive species accounts—reinforces what scientists have begun to suspect, that amphibians are a lens through which the state of the environment can be viewed more clearly. And, that the view is alarming and presages serious concerns for all life, including that of our own species. The first part of this work consists of more than fifty essays covering topics from the causes of declines to conservation, surveys and monitoring, and education. The second part consists of species accounts describing the life history and natural history of every known amphibian species in the United States.
Download or read book California Amphibian and Reptile Species of Special Concern written by Robert C. Thomson and published by Univ of California Press. This book was released on 2016-06-21 with total page 407 pages. Available in PDF, EPUB and Kindle. Book excerpt: One of the most important hotspots of herpetological biodiversity in the United States, California is home to many endemic amphibians and reptiles found nowhere else on earth. Many of these taxa have unique ecological and morphological specializations, and their management is an important conservation challenge. Increasing climate change impacts, human development, and extreme drought mean many of these species face an ever-greater risk of extinction. California Amphibian and Reptile Species of Special Concern provides an up-to-date synthesis of the current state of knowledge regarding the biology and conservation risks faced by 45 of California’s most sensitive amphibian and reptile species. With the goal of enhancing management based on the best available science, the authors developed a novel set of risk metrics to identify special concern species and the threats they face, including population declines, range size and restrictions, and ecological specializations and niche restrictions. In addition to detailed species accounts, this book provides a quantitative analysis of the conservation status and pressing management issues facing individual species and the state’s amphibian and reptile fauna as a whole. The volume focuses on identifying threats, concrete recommendations for management and recovery, and future research needs. The text is complemented by detailed distribution maps, color photos, and graphs. Written in nontechnical language, California Amphibian and Reptile Species of Special Concern will be a valuable resource to a broad range of users from resource managers, field biologists, and academic herpetologists to students and recreational naturalists. Published in association with the California Department of Fish and Wildlife.
Download or read book Ecology Abstracts written by and published by . This book was released on 1998 with total page 566 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coverage: 1982- current; updated: monthly. This database covers current ecology research across a wide range of disciplines, reflecting recent advances in light of growing evidence regarding global environmental change and destruction. Major ares of subject coverage include: Algae/lichens, Animals, Annelids, Aquatic ecosystems, Arachnids, Arid zones, Birds, Brackish water, Bryophytes/pteridophytes, Coastal ecosystems, Conifers, Conservation, Control, Crustaceans, Ecosyst em studies, Fungi, Grasses, Grasslands, High altitude environments, Human ecology, Insects, Legumes, Mammals, Management, Microorganisms, Molluscs, Nematodes, Paleo-ecology, Plants, Pollution studies, Reptiles, River basins, Soil, TAiga/tundra, Terrestrial ecosystems, Vertebrates, Wetlands, Woodlands.
Download or read book Effects of Recreation on Rocky Mountain Wildlife written by and published by . This book was released on 1999 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dissertation Abstracts International written by and published by . This book was released on 1997 with total page 826 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Reintroduction of a Declining Amphibian written by Amy Jo Lind and published by . This book was released on 2005 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Canadian Journal of Zoology written by and published by . This book was released on 1998 with total page 834 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Influence of Sediment Supply and Transport Capacity on Foothill Yellow legged Frog Habitat South Yuba River California written by Sarah Munro Yarnell and published by . This book was released on 2000 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of the Invasive Bullfrog Rana Catesbeiana on the Native Herpetofauna Community in Northern New Mexico written by Calvin I. Vialpando and published by . This book was released on 2017 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: Invasive species are among the greatest causes for decline of biodiversity. Since native species have no evolutionary history with the invasive species, the latter has ample opportunity to drive local populations to extinction via competition, predation, introduction of diseases and associated synergistic effects. Introduction of Bullfrogs (Rana catesbeiana) occurred in several areas outside of their native range including the southwestern United States. In this study, I investigated the effects of the invasive Bullfrog on the native herpetofauna community in northern New Mexico. I conducted my study along the Mora River at the Rio Mora National Wildlife Refuge in 2015. I sampled two 2.4 km segments of the Mora River that differ in Bullfrog management. In one "managed" segment, Bullfrog eradication has been ongoing since 2012. In the upstream "unmanaged" segment of the river, the Bullfrog population was left intact. Both sites were separated by a 1.6 km "buffer zone" of river where Bullfrog populations were not removed to eliminate the effect of migration between the two sites in the river. I utilized several methods to sample for different species. 1) I conducted call surveys to estimate the abundance of calling male Northern Leopard Frogs (R. pipiens) and Bullfrogs. 2) I conducted daytime visual encounter surveys to determine the relative abundance of Bullfrog populations between the managed and unmanaged sites. 3) I used artificial cover objects (ACOs) on a board line survey to estimate the relative abundance of small rodents, amphibian, and reptile species. I used data from the board line ACOs surveys to estimate a Shannon-Weiner diversity index and compare diversity and evenness between both sites. I conducted a mark and recapture study on Western Terrestrial Garter Snake (Thamnophis elegans) to determine their population structure. Species diversity and overall abundance of some reptile species was highest where Bullfrogs were managed. I found an unexpected trend where two species, Northern Leopard Frogs and Western Terrestrial Garter Snakes, were more abundant where the Bullfrog population was left intact (unmanaged site). This unexpected trend may be explained by other factors related to Bullfrog invasion including the predator release on the also invasive Norther Crayfish (Orconectes virilis), which may be more detrimental to the riparian community. Overall, this study indicates the herpetofauna species diversity along a riparian zone is negatively impacted by invasive Bullfrog presence. Though active management of invasive bullfrogs is not practical in some cases, removal of invasive species is beneficial to overall diversity.
Download or read book Ecology and Management of the Bullfrog written by R. Bruce Bury and published by . This book was released on 1984 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biological invaders in inland waters Profiles distribution and threats written by Francesca Gherardi and published by Springer Science & Business Media. This book was released on 2007-08-30 with total page 735 pages. Available in PDF, EPUB and Kindle. Book excerpt: Invasive species have come to dominate 3% of the Earth’s ice-free surface, constituting one of the most serious ecological and economic threats of the new millennium, and freshwater systems are particularly vulnerable. This book examines the identity, distribution, and impact of freshwater non-indigenous species and the dynamics of their invasion. It focuses on old and new invaders and provides a starting point for further research.
Download or read book Frogs of the United States and Canada written by C. Kenneth Dodd Jr. and published by JHU Press. This book was released on 2023-06-20 with total page 991 pages. Available in PDF, EPUB and Kindle. Book excerpt: The most thorough, updated guide to frogs and toads in the United States and Canada available. A stunning diversity of frog species can be found from coastal swamps to lofty mountain peaks, and from the Florida Keys to the Arctic Ocean. They live in subtropical lowlands, grassland prairies, deserts, and alpine-tundra habitats. Some species have restricted habitat requirements, whereas others occur contiguously from the arid plains or humid southeastern forests to the high tundra. In this new edition of Frogs of the United States and Canada, C. Kenneth Dodd Jr. tours the reader through the marvelous world of North American frogs. Covering 114 native and introduced species from all US states and Canadian provinces, this comprehensive reference on the biology, behavior, and conservation of the Order Anura includes detailed and updated information on • past and present distribution • life history and demography • reproduction and diet • landscape ecology and evolution • diseases, parasites, and threats from toxic substances • conservation and management Hundreds of occurrence maps, line drawings, and new color photographs of frogs and their habitats enhance the text. The most thorough treatment of the life histories, distribution, and status of North American frogs ever produced, Frogs of the United States and Canada has been the go-to reference for naturalists, scientists, and resource managers in their efforts to understand and conserve frogs, their habitats, and biodiversity for over a decade. Based on a meticulously updated examination of more than 8,000 references current through 2021, this second edition ensures Dodd's master work will remain an unparalleled resource for years to come.
Download or read book Bullfrog written by Susan H. Gray and published by Cherry Lake. This book was released on 2009-01-01 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bullfrogs are big eaters, consuming almost anything that fits in their mouths. Meals include birds, turtles, snakes, and even other frogs. At one time, bullfrogs lived only in North America and east of the Rocky Mountains. Today, the large frogs have invaded many parts of the world, causing problems for native wildlife. Look inside to discover how bullfrogs became an invasive species and what is being done to help stop their spread.
