The Human Footprint and the Last of the Wild

Sanderson, Eric W.; Jaiteh, Malanding S.; Levy, Marc A.; Redford, Kent H.; Wannebo, Antoinette; Woolmer, Gillian

doi:10.1641/0006-3568(2002)052[0891:thfatl]2.0.co;2

Cited by 2,116 publications

(1,677 citation statements)

References 32 publications

Supporting

Mentioning

1,613

Contrasting

Unclassified

Order By: Relevance

“…The land cover data were obtained from the Global Land Cover 2000 database (GLC 2003). We also used the human influence index (HII), which is an estimate of human influence based on human settlement, land transformation, accessibility, and infrastructure data (Sanderson et al 2002). Additionally, we obtained the compound topographic index (CTI, commonly referred to as the wetness index) that was representative of the topography variable from the USGS's Hydro1K dataset (USGS 2009).…”

Section: Environmental Variablesmentioning

confidence: 99%

Detecting the potential sympatric range and niche divergence between Asian endemic ungulates of Procapra

Jiang

2012

Naturwissenschaften

View full text Add to dashboard Cite

Species distribution modeling (SDM) is increasingly used to reveal biogeographical relationships, for example the sympatric range for species coexistence, and fundamental questions about niche evolution between related species. We explored the sympatric ranges between three Procapra species (Procapra przewalskii, Procapra Picticaudata, and Procapra gutturosa) via two methods of defining the study region (method 1, in which models were developed in a larger region including the whole geographic range of Procapra, and method 2 in which a smaller region surrounding focal species' localities was used and then projected to the larger region). We also quantified environmental niche divergence between gazelles across the whole range in Procapra. Models for gazelles generally performed well. Compared with method 2, method 1 led to larger predicted areas with high suitability and was less concentrated around known localities. Clamping, which deals with variables outside the training range, varied between gazelles and occurred primarily in regions unsuitable for respective species. For all gazelle pairs, models revealed an overlap zone where more than one species should occur, while the estimates varied between the two methods. Moreover, we found that the niche overlap was closely associated with geographic distance but not with phylogenetic distance among gazelles. Our findings indicate that SDM is a useful tool for testing whether related species tend to be in sympatry at large scales, with method 1 leading to more realistic predictions for Procapra. This study provides evidence of a distinct niche divergence among related species and supports the theory that ecological speciation plays a significant role in lineage generation.

show abstract

Section: Environmental Variablesmentioning

confidence: 99%

Detecting the potential sympatric range and niche divergence between Asian endemic ungulates of Procapra

Jiang

2012

Naturwissenschaften

View full text Add to dashboard Cite

show abstract

“…The extent of different patterns of cryptic disturbance often far exceeds the total area deforested, as shown by two recent studies on selective logging in Amazonia. Here, we discuss different forms of disturbance in Amazonian forests and question how much of the apparently intact forest in this region remains relatively undisturbed.Detecting forest disturbance Several mapping exercises have attempted to quantify the extent of relatively intact forest-wilderness regions remaining worldwide [1,2]. In tropical forests, most of this effort has been based on widely available imagery, such as Landsat, which can be used to quantify threats at large spatial scales.…”

mentioning

confidence: 99%

“…Detecting forest disturbance Several mapping exercises have attempted to quantify the extent of relatively intact forest-wilderness regions remaining worldwide [1,2]. In tropical forests, most of this effort has been based on widely available imagery, such as Landsat, which can be used to quantify threats at large spatial scales.…”

mentioning

confidence: 99%

Detecting anthropogenic disturbance in tropical forests

Peres

Barlow

Laurance

2006

Trends in Ecology & Evolution

222

154

View full text Add to dashboard Cite

“…In brief, our terrestrial analysis applies the Last of the Wild approach (Sanderson et al 2002), using updated Human Footprint data for 2009 (Venter et al 2016a, Venter et al 2016b, to calculate coverage of global-scale terrestrial wilderness areas within the boundaries of the 229 natural and mixed World Heritage sites inscribed at the time of our analysis (Allan et al submitted).…”

Section: Terrestrial Wilderness Analysismentioning

confidence: 99%