UCL logo

UCL Discovery

UCL home » Library Services » Electronic resources » UCL Discovery

Exploring the relationship between NDVI and African elephant population density in protected areas

Duffy, JP; Pettorelli, N; (2012) Exploring the relationship between NDVI and African elephant population density in protected areas. African Journal of Ecology , 50 (4) pp. 455-463. 10.1111/j.1365-2028.2012.01340.x.

Full text not available from this repository.

Abstract

Assessing the extent to which populations are limited by bottom-up processes driven by food limitation is crucial to our understanding of how ecosystems should be managed. Using satellite-derived Normalised Difference Vegetation Index (NDVI) as an index of resource availability, we investigated the relationships between greenness levels and African elephant (Loxodonta africana) population densities. Our results unveiled a positive relationship between NDVI and elephant densities in nonforest populations, but failed to capture any significant effects of survey area and type, number of years after the continental poaching ban and the IUCN category of the protected area in which the survey was undertaken. The number of forest elephant populations for which density estimates were available was very low, and no significant relationship between NDVI and forest elephant density could be established. Altogether, our study suggests that NDVI can successfully be linked to megaherbivore abundance across Africa and further highlights that a continental approach to energy-abundance relationships can be conducted in a relatively low-cost manner and short timescale, supporting managers' efforts to identify future suitable areas for elephant populations. © 2012 Blackwell Publishing Ltd.

Type: Article
Title: Exploring the relationship between NDVI and African elephant population density in protected areas
DOI: 10.1111/j.1365-2028.2012.01340.x
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > Div of Biosciences
URI: http://discovery.ucl.ac.uk/id/eprint/1528490
Downloads since deposit
0Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item