Volume 22, No. 07 - October 29, 2010

Aquatic species proposed for listing as endangered

The US Fish and Wildlife Service (USFWS) has published a proposed rule to list the Altamaha spinymussel (Elliptio spinosa) as an endangered species and designate 149 miles of mainstream river channel in southeastern Georgia as critical habitat. In addition, the National Marine Fisheries Service has published two proposed rules to list five Distinct Population Segments of the Atlantic sturgeon (Acipenser oxyrinchus oxyrinchus), one as threatened and four as endangered. All three proposed rules include assertions about the potential impacts of forestry practices and manufacturing facilities on water quality in rivers along the Atlantic Coast.

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Implementation rates for forestry best management practices

The Journal of Forestry has published “Trends for Forestry Best Management Practices Implementation” (Vol. 108, No. 6, pp. 267-273). The authors are George Ice and Erik Schilling (NCASI) and Jeff Vowell (Florida Division of Forestry).

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Forestry session at NCASI Canadian Meeting

Forestry session at NCASI Canadian Meeting NCASI’s 2010 Canadian Meeting will be held in Montreal on November 23 and 24. The meeting will include a forestry technical session on Wednesday, November 24. The agenda follows. Introduction and Overview of NCASI’s Current Forestry Program Kirsten Vice and Darren

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Effects of barred owls on estimates of site occupancy by northern spotted owls

Investigators from Weyerhaeuser and NCASI have published a paper titled “Site Occupancy Dynamics of Northern Spotted Owls in the Eastern Cascades, Washington, USA, 1990–2003” (Journal of Wildlife Management 74(6):1264–1274. The paper documents a decline in site occupancy probabilities for northern spotted owls over the study period and reports that barred owl presence had a negative effect on spotted owl detection probabilities.

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Factors affecting efficiency of field sampling for wildlife

Factors affecting efficiency of field sampling for wildlife Uncertainty about “detectability” complicates the interpretation of wildlife population surveys. Two approaches are available to reduce this uncertainty: (i) estimating detectability at all survey locations by double sampling, and (ii) “partial double sampling” in which a detectability estimate is developed by double sampling a subset of survey locations and applying it to other survey locations sampled only once. Which approach is more efficient for different conditions? This question is addressed in a recent paper, “Population Estimation Using Partial Double Sampling” (Forest Science 56:417-420) by Craig Loehle of NCASI.

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Effects of establishment practices on plant biodiversity in planted pine forests

Investigators at North Carolina State University have published a paper titled “Long-Term Effects of Establishment Practices on Plant Communities across Successive Rotations in a Loblolly Pine (Pinus taeda) Plantation” [Forest Ecology and Management 260 (2010) 1548–1556].

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