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Developing a topographic model to predict the northern hardwood forest type within Carolina northern flying squirrel (Glaucomys sabrinus coloratus) recovery areas of the southern Appalachians

International Journal of Forestry Research

By:
, , , , and
https://doi.org/10.1155/2014/179415

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Abstract

The northern hardwood forest type is an important habitat component for the endangered Carolina northern flying squirrel (CNFS; Glaucomys sabrinus coloratus) for den sites and corridor habitats between boreo-montane conifer patches foraging areas. Our study related terrain data to presence of northern hardwood forest type in the recovery areas of CNFS in the southern Appalachian Mountains of western North Carolina, eastern Tennessee, and southwestern Virginia. We recorded overstory species composition and terrain variables at 338 points, to construct a robust, spatially predictive model. Terrain variables analyzed included elevation, aspect, slope gradient, site curvature, and topographic exposure. We used an information-theoretic approach to assess seven models based on associations noted in existing literature as well as an inclusive global model. Our results indicate that, on a regional scale, elevation, aspect, and topographic exposure index (TEI) are significant predictors of the presence of the northern hardwood forest type in the southern Appalachians. Our elevation + TEI model was the best approximating model (the lowest AICc score) for predicting northern hardwood forest type correctly classifying approximately 78% of our sample points. We then used these data to create region-wide predictive maps of the distribution of the northern hardwood forest type within CNFS recovery areas.

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Additional publication details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Developing a topographic model to predict the northern hardwood forest type within Carolina northern flying squirrel (Glaucomys sabrinus coloratus) recovery areas of the southern Appalachians
Series title:
International Journal of Forestry Research
DOI:
10.1155/2014/179415
Volume:
2014
Year Published:
2014
Language:
English
Publisher:
Hindawi Publishing Corporation
Contributing office(s):
Coop Res Unit Leetown
Description:
Article 179415; 11 p.
Country:
United States
State:
North Carolina, Tennessee, Virginia
Online Only (Y/N):
N
Additional Online Files (Y/N):
N