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Book Nest site Selection for the Western Pond Turtle Actinemys Marmorata in Washington

Download or read book Nest site Selection for the Western Pond Turtle Actinemys Marmorata in Washington written by Hannah Michael Lucas and published by . This book was released on 2008 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book The Western Pond Turtle

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:

Book Status of the Western Pond Turtle Clemmys Marmorata in Washington

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:

Book Nest Site Characteristics of the Western Pond Turtle Clemmys Marmorata at Fern Ridge Reservoir in West Central Oregon

Download or read book Nest Site Characteristics of the Western Pond Turtle Clemmys Marmorata at Fern Ridge Reservoir in West Central Oregon written by Deborah Lyn Holte and published by . This book was released on 1998 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Best Management Practices for the Conservation of Western Pond Turtle Populations in California

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.

Book Western Pond Turtle Actinemys Marmorata Conservation

Download or read book Western Pond Turtle Actinemys Marmorata Conservation written by Daniel Kingsbury Ohrn and published by . This book was released on 2009 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Movement Patterns Habitat Use and Population Structure of Western Pond Turtles Actinemys Marmorata at a Disturbed Site in Northern California

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:

Book Habitat Use and Population Structure of the Western Pond Turtle Actinemys Marmorata in Big Chico Creek Butte County California

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:

Book Population Structure Life History and Terrestrial Movements of Western Pond Turtles Actinemys Marmorata in Lentic Habitats Along the Trinity River California

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:

Book An Examination of Limiting Factors of Chrysemys Picta Bellii Western Painted Turtles in the Lower Willamette River Basin Oregon

Download or read book An Examination of Limiting Factors of Chrysemys Picta Bellii Western Painted Turtles in the Lower Willamette River Basin Oregon written by and published by . This book was released on 2021 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: Oregon's two native freshwater turtle species, Chrysemys picta bellii (Western painted turtle) and Actinemys marmorata (Northwestern pond turtle), have seen significantly reduced population sizes since the founding of Portland in 1845, with estimates of up to 90% for A. marmorata. This project examined turtle nesting activity at 25 sites across a range of turtle populations and habitats around the Lower Willamette River Basin. All discovered turtle nesting activity was found in areas of high solar exposure. We found 93% of over 400 nest attempts to have been depredated across the 25 sites, well above most other reported rates. At several sites, many aborted nest attempts were found atop gravel roadbeds, indicating that lack of appropriate substrate is potentially limiting nesting success. The presence of greater than five pedestrians per hour at turtle nesting areas was correlated with a substantial decrease in nesting attempts suggesting that management of recreational activities may play a role in the amount of nesting activity occurring. Hence, site-specific solutions, such as importing substrate, alteration of path locations or seasonal trail closures to lessen human foot traffic disturbance of turtle nesting attempts, are likely to improve recruitment rates of native turtles in the Lower Willamette Basin. Further studies that improve knowledge of population demographics, the impact of human activities on turtles, and habitat needs of juvenile turtles are needed to support long-term self-sustaining turtle populations.

Book The Movements Habitat Use and Population Assessment of Western Pond Turtles Actinemys Marmorata in a Southern California Seasonal Wetland

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.