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11 results

  • 16 - Does Reduced Habitat Quality or Increased Hunter Access Explain Defaunation of Fragmented Forests?
  • from Part III - GIS Analysis in Broad-Scale Space
  • Edited by Francine L. Dolins, University of Michigan, Dearborn, Christopher A. Shaffer, Grand Valley State University, Michigan, Leila M. Porter, Northern Illinois University, Jena R. Hickey, University of Georgia, Nathan P. Nibbelink, University of Georgia
  • Book: Spatial Analysis in Field Primatology
  • Published online: 29 January 2021
  • Print publication: 18 February 2021, pp 349-364
  • View extract

    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.

Spatial Analysis in Field Primatology
  • Spatial Analysis in Field Primatology
  • Applying GIS at Varying Scales
  • Edited by Francine L. Dolins, Christopher A. Shaffer, Leila M. Porter, Jena R. Hickey, Nathan P. Nibbelink
  • Published online: 29 January 2021
  • Print publication: 18 February 2021
  • View description
    From foraging patterns in a single tree to social interactions across a home range, how primates use space is a key question in the field of primate behavioral ecology. Drawing on the latest advances in spatial analysis tools, this book offers practical guidance on applying geographic information systems (GIS) to central questions in primatology. An initial methodological section discusses niche modelling, home range analysis and agent-based modelling, with a focus on remote data collection. Research-based chapters demonstrate how ecologists apply this technology to a suite of topics including: calculating the intensity of use of both range and travel routes, assessing the impacts of logging, mining and hunting, and informing conservation strategies.