Download or read book Conservation Management of Two Populations of Western Pond Turtles Emys Marmorata in Butte County California written by David Lee Kelly and published by . This book was released on 2007 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Best Management Practices for the Conservation of Western Pond Turtle Populations in California written by Cristina Yarnal and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This project provides insight into western pond turtle (Actinemys marmorata) population health at sites in three states on the western part of the United States. Washington, Oregon and California have identified the western pond turtle as endangered, a critical and a species of special concern in that respective order. Washington has implemented a recovery plan for western pond turtles and Oregon has established best management practices for the conservation of native turtles. California has yet to establish any guidelines for the conservation of western pond turtles. This species is endemic to the western United States and has been suffering from declining populations since the late 1800s. The factors that have contributed to the decline in western pond turtle numbers include: historical commercial food use, habitat destruction and fragmentation by water diversions, urbanization and agriculture, non-native species interactions, fire, drought, and flood which are increased by climate change due to anthropogenic activity. Reptiles in general do not do well with high disturbance rates in their environment, due to their slow movements. Western pond turtles have also been afflicted by different diseases, such as a respiratory illness that decimated one-third of the population in Washington and shell disease that has been affecting populations in Washington, Oregon and California. Exposure to diseases is proliferated by contact with released pet turtles, as captive turtles contain different bacteria. The western pond turtle sites analyzed are in the Columbia Gorge and South Puget Sound in Washington, Willamette Drainage in Oregon and sites in Lake County, San Diego County and Yolo County in California. These sites were analyzed through a combination of data from peer-reviewed, unpublished literature and government agency reports. The purpose of this research is to determine the effectiveness of management plans and strategies used for the recovery and conservation of western pond turtle populations, with an emphasis on head-starting programs, non-native species removal, habitat restoration and enhancement. The results will be analyzed by looking at historical data and more recent results in relatively the same area to determine if the western pond turtle populations have increased or decreased at those sites, in order to best allocate resources and prepare management plans for the conservation of western pond turtle populations in California. The recommendations being propose are surveying and monitoring, collaboration, habitat restoration/enhancement, non-native species removal, head-start programs and land acquisition. The analysis between sites in Washington, Oregon and California showed some progress but requires further research.
Download or read book Habitat Use and Population Structure of the Western Pond Turtle Actinemys Marmorata in Big Chico Creek Butte County California written by Glen M. Lubcke and published by . This book was released on 2004 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Western Pond Turtle written by Dan C. Holland and published by . This book was released on 1994 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Comparison of Western Pond Turtle Actinemys Marmorata Movements in Perennial and Intermittent Portions of a Northwestern California River System written by Cheryl A. Bondi and published by . This book was released on 2009 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Population Structure Life History and Terrestrial Movements of Western Pond Turtles Actinemys Marmorata in Lentic Habitats Along the Trinity River California written by Leah Marie Sloan and published by . This book was released on 2012 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Blood Profiles in Western Pond Turtles Emys Marmorata from a Nature Reserve and Comparison with a Population from a Modified Habitat written by Ninette R. Daniele and published by . This book was released on 2014 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Movements Habitat Use and Population Assessment of Western Pond Turtles Actinemys Marmorata in a Southern California Seasonal Wetland written by Barry S. Nerhus (Jr.) and published by . This book was released on 2016 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: This study investigates the population dynamics, movements, and habitat use of a population of western pond turtles in Orange County, California from 2008-2012 using radio telemetry and mark-recapture data. Western pond turtles have been thought to be declining throughout their range. However, few studies have documented their status in southern California, where urbanization has changed the landscape drastically in recent decades. I individually marked 236 pond turtles using hoop-net funnel traps and estimated the population size at 308 individuals, which is the largest estimate reported in southern California. Mean capture per unit effort was 5.03±0.87. Mean female carapace length (CL) (142±14mm) was not significantly larger than males (139±14 mm). I also documented 20 nest and 9 estivation locations. Mean distances included 176 ±130.80 meters (m) and 91±58.6 m. These data identify the population demography, which can be a metric of population stability. Other known populations need to be estimated to determine their regional status.
Download or read book Status of the Western Pond Turtle Clemmys Marmorata in Washington written by Washington (State). Department of Wildlife and published by . This book was released on 1993 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Movement Patterns Habitat Use and Population Structure of Western Pond Turtles Actinemys Marmorata at a Disturbed Site in Northern California written by Gary Alan Lechner and published by . This book was released on 2004 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Basking Western Pond Turtle Response to Trail Use in Mountain Vew California written by Paul E Nyhof and published by . This book was released on 2013 with total page 85 pages. Available in PDF, EPUB and Kindle. Book excerpt: The western pond turtle (Emys marmorata) is the only native freshwater turtle in California, and it is listed as a California Species of Special Concern. One population near Moffit Naval Air Station in Northern California uses a highly altered water channel along a recently opened section of the Bay Trail, exposing western pond turtles (WPT) to high rates of human activity through recreational trail use. This research assessed whether human recreational trail use had a measurable effect on WPT basking behavior. WPTs were also trapped and marked to collect data on the structure and stability of the current population. The lengths of basking periods of WPTs, when disturbed by human activity, were significantly shorter than background basking periods. Shorter basking periods can cause aquatic turtles to forfeit proper thermoregulation, leading to a decline in their ability to carry out necessary behaviors and physiological processes. The rate at which WPTs were disturbed by pedestrian recreational trail use was very low (
Download or read book Study of Two Western Pond Turtle Populations Clemmys Marmorata in Washington 1986 written by Tara Zimmerman and published by . This book was released on 1986 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ecotoxicology of Free ranging Western Pond Turtles Emys Marmorata written by Erik William Meyer and published by . This book was released on 2012 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Temperature Effects on Development and Phenotype in a Free living Population of Western Pond Turtles Emys Marmorata written by Nicole Elise Christie and published by . This book was released on 2014 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Seasonal Habitat of the Western Pond Turtle Emys Marmorata in an Urban Environment written by James Hovis and published by . This book was released on 2012 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Movements Habitat Use and Demography of Western Pond Turtles in an Intermittent Central California Stream written by Joseph Paul Belli and published by . This book was released on 2015 with total page 97 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Western Pond Turtles, Emys (Actinemys) marmorata, were captured (n=173) in 2011 (wet year) and 2012-2013 (successively drier drought years) along upper Coyote Creek, an intermittent stream in central California. Males outnumbered females 2.8:1, juveniles less than 120 mm long made up 26% of captures, growth rates varied among individuals, and little growth occurred in turtles older than 10 years. I radio-tracked turtles from May 2011 through August 2013 to ascertain movements and seasonal habitat use. Males had much larger home ranges than females (means of 2281 m for males and 501 m for females in 2012), and males moved extensively in April and May, during the apparent breeding season. Turtles preferred deep and complex pools, complex runs, and backwaters. Turtles left the stream for upland habitats in late spring and summer as stream flow ceased and pool connectivity was broken. There was substantial variation in departure dates among individuals and between wetter and drier reaches. Mean departure date was 16 August in 2011, but decreased to 20 July in 2012 and 28 June in 2013, as the drought intensified. Upland sites were mostly within 100 m of the stream, beneath dried leaves and/or thatch, and on slopes varying from flat to over 40%. Turtles remained upland for almost seven months in 2011-2012, although there was much variation. Mean return to stream dates were 27 February (males) and 16 March (females)." -- Author's abstract.
Download or read book The Ecology Exploitation and Conservation of River Turtles written by Don Moll and published by Oxford University Press. This book was released on 2004-04-08 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt: The underlying theme of this book is that a widespread, taxonomically diverse group of animals, important both from ecological and human resource perspectives, remains poorly understood and in delcine, while receiving scant attention from the ecological and conservation community. This volume proposes a comprehensive overview of the world's river turtles' ecology, conservation, and management. It begins with a categorization of taxa which inhabit flowing water habitats followed by information on their evolutionary and physical diversity and biogeography. Within the framework of ecology, the authors discuss the composition of river turtle communities in different types of lotic habitats and regions, population dynamics, movements, reproductive characteristics and behavior, predators, and feeding relationships. In a conservation and management section, the authors identify and evaluate the nature and intensity of factors which threaten river turtle survival--almost all of which involve direct human exploitation or indirect effects of human induced habitat alteration and degradation. They then list and evaluate the various schemes which have been proposed or employed to halt declines and restore populations, and make recommendations for future management plans for specific species and regions. In closing, they state their viewpoint concerning future research directions and priorities, and an evaluation of future prospects for survival of the world's river turtle species.
