Skip to page content
USDA Forest Service
  
Treesearch

Research & Development Treesearch

 
Treesearch Home
About Treesearch
Contact Us
Research & Development
Forest Products Lab
International Institute of Tropical Forestry
Northern
Pacific Northwest
Pacific Southwest
Rocky Mountain
Southern
Help
 

GeoTreesearch


Science.gov - We Participate


USA.gov  Government Made Easy


Global Forest Information Service

US Forest Service
P.O. Box 96090
Washington, D.C.
20090-6090

(202) 205-8333

You are here: Home / Search / Publication Information
Bookmark and Share

Publication Information

(693 KB bytes)

Title: A quantitative topographic analysis of the Sky Islands: a closer examination of the topography-biodiversity relationship in the Madrean Archipelago [Abstract]

Author: Coblentz, Dvid; Riitters, Kurt H.

Date: 2005

Source: In: Gottfried, Gerald J.; Gebow, Brooke S.; Eskew, Lane G.; Edminster, Carleton B., comps. Connecting mountain islands and desert seas: biodiversity and management of the Madrean Archipelago II. Proc. RMRS-P-36. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station: 563

Publication Series: Proceedings (P)

   Note: This article is part of a larger document. View the larger document

Description: The well-documented relationship between topography and biodiversity is particularly profound in the Madrean Archipelago. However, despite this recognition, most studies of the Sky Island biogeography have used only a first-order qualitative description of the topography (e.g., average vertical relief and mean elevation). Exploiting the availability of high-resolution DEMs (digital elevation models), we have undertaken a rigorous quantitative analysis of the topographic fabric of the region and explored its utility for evaluating the relationship between topography and biodiversity. Using a surface-normal eigenvector analysis of a 1-km-resolution DEM, topographic roughness, strength, orientation, and organization were used for characterization of the topographic fabric. Building on the assumption that land cover diversity is a plausible first-order measure of biodiversity, we compare “predicted” biodiversity (based on weighted topographic quantities) and the “observed” biodiversity (based on land cover information extracted from satellite imagery). We find good fit throughout much of the Madrean Archipelago (in contrast to the neighboring provinces) supporting the conclusion that topography plays a critical role in the biodiversity of sky-island regions.

Publication Notes:

  • We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
  • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
  • You may send email to rschneider@fs.fed.us to request a hard copy of this publication. (Please specify exactly which publication you are requesting and your mailing address.)

XML: View XML

Citation:


Coblentz, Dvid; Riitters, Kurt H. 2005. A quantitative topographic analysis of the Sky Islands: a closer examination of the topography-biodiversity relationship in the Madrean Archipelago [Abstract]. In: Gottfried, Gerald J.; Gebow, Brooke S.; Eskew, Lane G.; Edminster, Carleton B., comps. Connecting mountain islands and desert seas: biodiversity and management of the Madrean Archipelago II. Proc. RMRS-P-36. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station: 563

 


 [ Get Acrobat ]  Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility

USDA logo which links to the department's national site. Forest Service logo which links to the agency's national site.