An Examination Of Limiting Factors Of Chrysemys Picta Bellii Western Painted Turtles In The Lower Willamette River Basin Oregon
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An Examination Of Limiting Factors Of Chrysemys Picta Bellii Western Painted Turtles In The Lower Willamette River Basin Oregon
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Author :
language : en
Publisher:
Release Date : 2021
An Examination Of Limiting Factors Of Chrysemys Picta Bellii Western Painted Turtles In The Lower Willamette River Basin Oregon written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021 with Nest building categories.
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.
Multiple Species Inventory And Monitoring Technical Guide
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Author : Patricia N. Manley
language : en
Publisher:
Release Date : 2006
Multiple Species Inventory And Monitoring Technical Guide written by Patricia N. Manley and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with Ecosystem management categories.
Monitoring protocols are presented for: landbirds; raptors; small, medium and large mammals; bats; terrestrial amphibians and reptiles; vertebrates in aquatic ecosystems; plant species, and habitats.
Hemlock Dwarf Mistletoe
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Author :
language : en
Publisher:
Release Date : 1983
Hemlock Dwarf Mistletoe written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983 with Dwarf mistletoe categories.
The Last Landscape
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Author : William H. Whyte
language : en
Publisher: University of Pennsylvania Press
Release Date : 2012-10-23
The Last Landscape written by William H. Whyte and has been published by University of Pennsylvania Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-10-23 with Architecture categories.
The remaining corner of an old farm, unclaimed by developers. The brook squeezed between housing plans. Abandoned railroad lines. The stand of woods along an expanded highway. These are the outposts of what was once a larger pattern of forests and farms, the "last landscape." According to William H. Whyte, the place to work out the problems of our metropolitan areas is within those areas, not outside them. The age of unchecked expansion without consequence is over, but where there is waste and neglect there is opportunity. Our cities and suburbs are not jammed; they just look that way. There are in fact plenty of ways to use this existing space to the benefit of the community, and The Last Landscape provides a practical and timeless framework for making informed decisions about its use. Called "the best study available on the problems of open space" by the New York Times when it first appeared in 1968, The Last Landscape introduced many cornerstone ideas for land conservation, urging all of us to make better use of the land that has survived amid suburban sprawl. Whyte's pioneering work on easements led to the passage of major open space statutes in many states, and his argument for using and linking green spaces, however small the areas may be, is a recommendation that has more currency today than ever before.
Turtles Of The United States
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Author : Carl H. Ernst
language : en
Publisher:
Release Date : 1972
Turtles Of The United States written by Carl H. Ernst and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1972 with Nature categories.
The Life Cycle Of A Painted Turtle
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Author : Andrew Hipp
language : en
Publisher: The Rosen Publishing Group, Inc
Release Date : 2001-12-15
The Life Cycle Of A Painted Turtle written by Andrew Hipp and has been published by The Rosen Publishing Group, Inc this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001-12-15 with Science categories.
Painted turtles are ancient, cold-blooded reptiles that lay eggs and must hibernate through the winters.
Amphibians And Reptiles Of New Mexico
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Author : William G. Degenhardt
language : en
Publisher: UNM Press
Release Date : 1996
Amphibians And Reptiles Of New Mexico written by William G. Degenhardt and has been published by UNM Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with Nature categories.
The definitive reference source covering the 123 species of amphibians and reptiles found in New Mexico, including over 130 color plates and 100 maps.
The Esther Chronicles
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Author : Kevin Scott Collier
language : en
Publisher: Createspace Independent Publishing Platform
Release Date : 2017-03-04
The Esther Chronicles written by Kevin Scott Collier and has been published by Createspace Independent Publishing Platform this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-03-04 with categories.
Esther the painted turtle, and her guardian, Gack, the red-winged blackbird, traverse and navigate through inspirational, faith-based lessons in this book for young readers. Based on the 2005 book Esther's Channel.
Maine Amphibians And Reptiles
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Author : Malcolm L. Hunter
language : en
Publisher: Orono, Me. : University of Maine Press
Release Date : 1999
Maine Amphibians And Reptiles written by Malcolm L. Hunter and has been published by Orono, Me. : University of Maine Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Nature categories.
Tips for finding these species, conservation issues, exotic species, and other topics are covered in additional chapters." "Of particular note is the enclosed compact disc, narrated and produced by well-known naturalist Lang Elliott, that will make it easy to learn to identify all the frogs and toads by their songs. The CD also includes a long unnarrated series of frog choruses."--BOOK JACKET.
Turtle Crossing
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Author : Rick Chrustowski
language : en
Publisher: Macmillan
Release Date : 2006-04-04
Turtle Crossing written by Rick Chrustowski and has been published by Macmillan this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006-04-04 with Juvenile Nonfiction categories.
Discusses the life cicle of a female painted turtle.