NDLI: Spectral variation versus species beta-diversity at different spatial scales: a test in African highland savannas.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Rocchini, Duccio He, Kate S. Oldeland, Jens Wesuls, Dirk Neteler, Markus
Spatial Coverage	Namibia
Description	Country affiliation: Italy Author Affiliation: Rocchini D ( IASMA Research and Innovation Centre, Fondazione Edmund Mach, Environment and Natural Resources Area, Via E. Mach 1, S. Michele all'Adige, TN, Italy. duccio.rocchini@iasma.it)
Abstract	Few studies exist that explicitly analyse the effect of grain, i.e. the sampling unit dimension, on vascular plant species turnover (beta-diversity) among sites. While high beta-diversity is often a result of high environmental heterogeneity, remotely sensed spectral distances among sampling units may be used as a proxy of environmental gradients which spatially shape the patterns of species turnover. In this communication, we aimed to (i) test the potential relation between spectral variation and species beta-diversity in a savanna environment and to (ii) investigate the effect of grain on the achieved patterns. Field data gathered by the BIOTA Southern Africa biodiversity monitoring programme were used to model the relation between spectral variation and species turnover at different spatial grains (10 m x 10 m and 20 m x 50 m). Our results indicate that the overall fit was greater at the larger grain size, confirming the theoretical assumption that using a lower grain size would generally lead to a higher noise in the calculation of species turnover. This communication represents one of the first attempts at relating beta-diversity to spectral variation, while incorporating the effects of grain size in the study. The results of this study could have significant implications for biodiversity research and conservation planning at a regional or even larger spatial scale.
File Format	HTM / HTML
ISSN	14640325
Issue Number	4
Journal	Journal of Environmental Monitoring
Volume Number	12
e-ISSN	14640333
Language	English
Publisher	Royal Society of Chemistry
Publisher Date	2010-04-01
Publisher Place	Great Britain (UK)
Access Restriction	Subscribed
Subject Keyword	Discipline Environmental Health Biodiversity Geography Methods Plants Environmental Monitoring Namibia Journal Article Research Support, Non-u.s. Gov't
Content Type	Text
Resource Type	Article
Subject	Public Health, Environmental and Occupational Health Management, Monitoring, Policy and Law

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