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Accession Number 5001775

Title Impacts of selective tree harvesting on the Delmarva fox squirrel

Project Description The Delmarva fox squirrel (Sciurus niger cinereus) is an endangered species found only in remnant

patches of its former range. Fragmentation of its preferred habitat and potential changes in

silvicultural practices on the Delmarva peninsula may pose serious threats to its stability. Its

decline is being mirrored by most, if not all, of the eastern subspecies of fox squirrels. The

demographics of the Delmarva fox squirrel in relation to forest age and stand conditions are

unknown and management practices to produce and maintain suitable forest habitat are untested.

The immediate objectives of this study are 1) to investigate the impact of a clearcut with reserves

on the density, age- and sex-specific survivorship and dispersal rates, and habitat correlates for

Delmarva fox squirrels, 2) to refine and standardize data collection and survey techniques for

squirrels, and 3) to compare two separate methods of estimating vegetative composition, one of

which is recommended in the Recovery Plan and used to develop a habitat suitability index (HSI).

Keywords biological reserve networks, chesapeake bay, cooperative monitoring, declining species, delmarva

fox squirrel, demographics, forest fragmentation, forested wetlands, fox squirrels, future trends,

population viability, threatened and endangered spec,

Principal Carol I Bocetti, USGS Patuxent Wildlife Research Center:; Oliver H

Investigators Pattee, USGS Patuxent Wildlife Research Center:;

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