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16 - Does Reduced Habitat Quality or Increased Hunter Access Explain Defaunation of Fragmented Forests?

Bonobos as a Case Study

from Part III - GIS Analysis in Broad-Scale Space

Published online by Cambridge University Press:  29 January 2021

Francine L. Dolins
Affiliation:
University of Michigan, Dearborn
Christopher A. Shaffer
Affiliation:
Grand Valley State University, Michigan
Leila M. Porter
Affiliation:
Northern Illinois University
Jena R. Hickey
Affiliation:
University of Georgia
Nathan P. Nibbelink
Affiliation:
University of Georgia
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Summary

Primatologists require tools to better understand primate habitat use and occurrence at broad spatial scales in order to address the potential consequences of accelerated land use change on many threatened or endangered primate populations. Landscape-level variables derived from remote sensing can contribute to more informed conservation planning decisions, yet need to be grounded in established relationships with local field data. Landscape-level variables necessarily are measured at different scales than GPS-level variables, thereby confounding our understanding of the causal mechanisms that relate them. For example, the mechanism causing empty forest syndrome, a condition in which relatively intact stands of forest are devoid of most fauna, has generally been attributed to local hunting (Fa & Brown 2009; Redford 1992; Wilkie et al. 2011). Wilkie et al. (1992) made a convincing case that forest fragmentation via roads and transects from logging activities exacerbated hunting pressure on forest fauna in the Republic of Congo. Therefore, we (Hickey et al. 2012, 2013) hypothesized that remotely sensed data measuring forest fragmentation and landscape-level proxies of hunter access (distance from agriculture, distance from road, distance from rivers) may correspond to relative hunting pressure for many hunted species because areas near agriculture, roads, and rivers are necessarily near areas of higher human concentration. However, it remains untested whether those landscape metrics actually relate to relative hunting pressure. Approaches using geographic information systems (GIS) and global positioning systems (GPS) are essential to answering such important questions.

Type
Chapter
Information
Spatial Analysis in Field Primatology
Applying GIS at Varying Scales
, pp. 349 - 364
Publisher: Cambridge University Press
Print publication year: 2021

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