Timber Rattlesnake Crotalus Horridus Field Survey On Southeastern Minnesota State Lands 1990 1991 PDF Download

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Survey of Timber Rattlesnake (Crotalus Horridus) Peripheral Range on Southern Minnesota State Lands (1998)

Survey of Timber Rattlesnake (Crotalus Horridus) Peripheral Range on Southern Minnesota State Lands (1998)
Author: Dan Keyler
Publisher:
Total Pages: 13
Release: 2003*
Genre: Timber rattlesnake
ISBN:

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Field surveys of suitable timber rattlesnake habitat were made on state lands in the counties of Goodhue, Olmsted, and Wabasha from May 9 through September 18, 1998. The primary goal of the study was to determine the status of possible timber rattlesnake populations in this peripheral-range region ... A total of 143 field man-hours of survey time resulted in finding only three specimens of Crotalus horridus ... Despite the existence of what would be considered good to optimal timber rattlesnake habitat at nearly all survey sites there was no evidence (i.e., shed skins, snake tracks, or broken rattles) to confirm the presence of timber rattlesnakes at any site other than those at which Crotalus horridus were actually observed ... Based on the results of the current survey, both the range and the numbers of timber rattlesnakes in Goodhue, Olmsted, and Wabasha counties appear to be substantially reduced, or the species extirpated in several areas, which historically supported viable timber rattlesnake populations.


The Timber Rattlesnake

The Timber Rattlesnake
Author: Alvin Breisch
Publisher:
Total Pages: 468
Release: 2021-08-31
Genre: Snakes
ISBN: 9781736655009

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The Timber Rattlesnake: Life History, Distribution, Status, and Conservation Action Plan was developed by a team of more than seventy-five concerned rattlesnake biologists from federal and state agencies, universities, and private institutions, as well as environmental consultants and private citizens. The 472-page book is divided into two parts and contains more than 300 images from 90 photographers and more than 40 maps. Part I of the document presents an overview of the life history, genetics, ecology, distribution, status, and threats to the continued existence of Timber Rattlesnakes from a range-wide perspective along with recommendations for conducting population assessments. Part II of the document presents the legal status, distribution, population status, habitat needs, active period, threats, and management actions for Timber Rattlesnakes on a state-by-state (or province by-province) basis. The information provided in this plan can serve as a reference for landowners, land managers, and government agencies at all levels to enable them to develop science-based management and conservation plans for Timber Rattlesnake populations and protect habitats for which they have responsibility. The guidance provided in this plan will also be of value to environmental consultants as they develop recommendations for developers, and to researchers who endeavor to fill in gaps in our knowledge concerning the species' distribution and ecology.


Reptile Biodiversity

Reptile Biodiversity
Author: Roy W. McDiarmid
Publisher: Univ of California Press
Total Pages: 424
Release: 2012-01-10
Genre: Nature
ISBN: 0520266714

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“Authoritative and comprehensive—provides an up-to-date description of the tool box of methods for inventorying and monitoring the diverse spectrum of reptiles. All biodiversity scientists will want to have it during project planning and as study progresses. A must for field biologists, conservation planners, and biodiversity managers.”—Jay M. Savage, San Diego State University “Kudos to the editors and contributors to this book. From the perspective of a non-ecologist such as myself, who only occasionally needs to intensively sample a particular site or habitat, the quality and clarity of this book has been well worth the wait.”—Jack W. Sites, Jr.