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Remotely sensed indicators of habitat heterogeneity and biological diversity: A preliminary reportThe relationship between habitat area, spatial dynamics of the landscape, and species diversity is an important theme in population and conservation biology. Of particular interest is how populations of various species are affected by increasing habitat edges due to fragmentation. Over the last decade, assumptions regarding the effects of habitat edges on biodiversity have fluctuated wildly, from the belief that they have a positive effect to the belief that they have a clearly negative effect. This change in viewpoint has been brought about by an increasing recognition of the importance of geographic scale and a reinterpretation of natural history observations. In this preliminary report from an ongoing project, we explore the use of remote sensing technology and geographic information systems to further our understanding of how species diversity and population density are affected by habitat heterogeneity and landscape composition. A primary feature of this study is the investigation of SAR for making more rigorous investigations of habitat structure by exploiting the interaction between radar backscatter and vegetation structure and biomass. A major emphasis will be on the use of SAR data to define relative structural types based on measures of structural consolidation using the vegetation surface area to volume ratio (SA/V). Past research has shown that SAR may be sensitive to this form of structural expression which may affect biodiversity.
Document ID
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Imhoff, Marc
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Sisk, Thomas
(Interior Dept. Washington, DC., United States)
Milne, Anthony
(New South Wales Univ. Kensington, Australia)
Morgan, Garth
(Defence Science and Technology Organisation Melbourne, Australia)
Orr, Tony
(Defence Science and Technology Organisation Melbourne, Australia)
Date Acquired
September 6, 2013
Publication Date
January 23, 1995
Publication Information
Publication: JPL, Summaries of the Fifth Annual JPL Airborne Earth Science Workshop. Volume 3: AIRSAR Workshop
Subject Category
Earth Resources And Remote Sensing
Accession Number
Distribution Limits
Work of the US Gov. Public Use Permitted.
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