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Full-Text Articles in Physical Sciences and Mathematics
The Role Of Hybridization And The United States Fish And Wildlife Service Biologists’ Discretion In The Implementation Of The Endangered Species Act, Jennifer F. Lind-Riehl
The Role Of Hybridization And The United States Fish And Wildlife Service Biologists’ Discretion In The Implementation Of The Endangered Species Act, Jennifer F. Lind-Riehl
Dissertations, Master's Theses and Master's Reports - Open
The Endangered Species Act (ESA) requires that the “best available scientific and commercial data” be used to enable the protection of critically imperiled species from extinction and preserve biodiversity. However, the ESA does not provide specific guidance on how to apply this mandate. In addition, the interpretation of scientific data can be uncertain and controversial, particularly regarding species delineation and hybridization issues. US Fish and Wildlife Service (FWS) field biologists must decide what the best science is and how to interpret and apply it in their recommendations. As a result, FWS field biologists often have considerable discretion when it comes …
Legacy And Opportunity In Northern Hardwood Forests, Wilfred Previant
Legacy And Opportunity In Northern Hardwood Forests, Wilfred Previant
Dissertations, Master's Theses and Master's Reports
Northern hardwood management reflects a combination of historic exploitation, current efforts for sustainability, and a desired future condition that incorporates complexity, resiliency, and adaptability. Stand structure and species diversity were assessed at two study locations within Michigan (USA): (1) long-term northern hardwood cutting trials at the Ford Forestry Center (FFC; Michigan Technological University, USA); and (2) vernal pool habitat within Pictured Rocks National Lakeshore (PRNL). Following the fifth cutting entry at the FFC, age structure and pre- and post-harvest relative species abundance, stocking, and volume were compared across three diameter-limit treatments, three residual basal area treatments, and an uncut control. …