Cooperative Amphibian Monitoring Protocol for the Greater Yellowstone Network PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Cooperative Amphibian Monitoring Protocol for the Greater Yellowstone Network PDF full book. Access full book title Cooperative Amphibian Monitoring Protocol for the Greater Yellowstone Network by Robert E. Bennetts. Download full books in PDF and EPUB format.
Author: Robert E. Bennetts
Publisher:
ISBN:
Category : Amphibians
Languages : en
Pages : 92
Get Book Here
Book Description
Author: Robert E. Bennetts
Publisher:
ISBN:
Category : Amphibians
Languages : en
Pages : 92
Get Book Here
Book Description
Author: Robert E. Bennetts
Publisher:
ISBN:
Category : Amphibians
Languages : en
Pages : 86
Get Book Here
Book Description
Author: National Park Service
Publisher: CreateSpace
ISBN: 9781492156338
Category : Nature
Languages : en
Pages : 48
Get Book Here
Book Description
Concerns about amphibians have escalated since population declines became apparent in diverse areas around the world in the 1980s (Collins and Storfer 2003). Systematic examinations have revealed that in some regions, including North America, rapid declines probably began around the middle of the 20th century, with the rate of decline increasing in the 1990s (Houlahan et al. 2000; Alford et al. 2001). Worldwide, 32% of amphibian species are now threatened with extinction, while 43% exhibit some form of population decrease (Stuart et al. 2004). Amidst the rapid and general decline in global biodiversity, amphibian population extinctions and declines are particularly alarming because they are occurring not only where habitat has been lost, but also in natural, protected areas.
Author: Debra A. Patla
Publisher:
ISBN:
Category : Amphibians
Languages : en
Pages : 17
Get Book Here
Book Description
This is a report of the results of amphibian surveys conducted in the Yellowstone and Grand Teton national parks and the J.D. Rockefeller Memorial Parkway in the summer of 2002.
Author: William R. Gould
Publisher:
ISBN:
Category : Colonization
Languages : en
Pages : 11
Get Book Here
Book Description
Monitoring of natural resources is crucial to ecosystem conservation, and yet it can pose many challenges. Annual surveys for amphibian breeding occupancy were conducted in Yellowstone and Grand Teton National Parks over a 4-year period (2006?2009) at two scales: catchments (portions of watersheds) and individual wetland sites. Catchments were selected in a stratified random sample with habitat quality and ease of access serving as strata. All known wetland sites with suitable habitat were surveyed within selected catchments. Changes in breeding occurrence of tiger salamanders, boreal chorus frogs, and Columbia-spotted frogs were assessed using multi-season occupancy estimation. Numerous a priori models were considered within an information theoretic framework including those with catchment and site-level covariates. Habitat quality was the most important predictor of occupancy. Boreal chorus frogs demonstrated the greatest increase in breeding occupancy at the catchment level. Larger changes for all 3 species were detected at the finer site-level scale. Connectivity of sites explained occupancy rates more than other covariates, and may improve understanding of the dynamic processes occurring among wetlands within this ecosystem. Our results suggest monitoring occupancy at two spatial scales within large study areas is feasible and informative.
Author: United States. National Park Service. Water Resources Division
Publisher:
ISBN:
Category : National parks and reserves
Languages : en
Pages : 128
Get Book Here
Book Description
Author: Debra A. Patla
Publisher:
ISBN:
Category : Amphibians
Languages : en
Pages : 16
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category : Amphibian declines
Languages : en
Pages : 132
Get Book Here
Book Description
Author: Charles R. Peterson
Publisher:
ISBN:
Category : Amphibian populations
Languages : en
Pages : 37
Get Book Here
Book Description
Author: Andrew M. Ray
Publisher:
ISBN:
Category : Amphibians
Languages : en
Pages : 112236
Get Book Here
Book Description
Amphibians have been selected as a ?vital sign? by several National Park Service (NPS) Inventory and Monitoring (I&M) networks. An eight-year amphibian monitoring data set provided opportunities to examine spatial and temporal patterns in amphibian breeding richness and wetland desiccation across Yellowstone and Grand Teton National Parks. Amphibian breeding richness was variable across both parks, and only 4 of 31 permanent monitoring catchments contained all four widely distributed species. Annual breeding richness was also variable through time and fluctuated by as much as 75% in some years and catchments. Wetland desiccation was also documented across the region, but alone did not explain variations in amphibian richness. High annual variability across the region emphasizes the need for multiple years of monitoring to accurately describe amphibian richness and wetland desiccation dynamics.
