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Title: Density and abundance of black-backed woodpeckers in a Ponderosa pine ecosystem

Author: Mohren, Sean R.; Rumble, Mark A.; Anderson, Stanley H.;

Date: 2014

Source: The Prairie Naturalist. 46(2): 62-69.

Publication Series: Scientific Journal (JRNL)

Description: Black-backed woodpeckers (Picoides arcticus) are usually associated with forest disturbance resulting in recently killed trees. While black-backed woodpeckers are attracted to areas affected by these disturbances, in the Black Hills they exist during interim disturbance periods in largely undisturbed forests. In 2012, a petition for listing black-backed woodpeckers in the Black Hills as a distinct population segment identified current population size and the population size necessary to minimize risk of extinction as key components of the decision process. Our objective was to estimate the population size of black-backed woodpeckers in the Black Hills National Forest of South Dakota and Wyoming during a period of relatively low disturbance (e.g., 2000-2001). The estimated population was 641 (95% CI = 405-990) and 456 (95% CI = 293-705) breeding pairs in 2000 and 2001, respectively. The average density of 0.12/km2 (95% CI = 0.07-0.18) was similar to densities in other undisturbed forests. This population estimate provides a starting point for population viability analyses during periods of relatively low disturbance by fire or insects.

Keywords: black-backed woodpeckers, Black Hills, density, Picoides arcticus, population, South Dakota

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Mohren, Sean R.; Rumble, Mark A.; Anderson, Stanley H. 2014. Density and abundance of black-backed woodpeckers in a Ponderosa pine ecosystem. The Prairie Naturalist. 46(2): 62-69.

 


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