Estimation of population density by spatially explicit capture–recapture analysis of data from area searches

Ecology ◽  
2011 ◽  
Vol 92 (12) ◽  
pp. 2202-2207 ◽  
Author(s):  
Murray G. Efford
Keyword(s):  
Population Density ◽  
Spatially Explicit ◽  
Capture Recapture

scholarly journals High carnivore population density highlights the conservation value of industrialised sites

2018 ◽  
Author(s):  
Daan J. E. Loock ◽  
Samual T. Williams ◽  
Kevin W. Emslie ◽  
Wayne S. Matthews ◽  
Lourens H. Swanepoel
Keyword(s):  
South Africa ◽  
Population Density ◽  
Human Development ◽  
Camera Trap ◽  
High Abundance ◽  
Spatially Explicit ◽  
Conservation Value ◽  
Industrial Sites ◽  
Capture Recapture ◽  
Disturbed Habitats

AbstractAs the environment becomes increasingly altered by human development, the importance of understanding the ways in which wildlife interact with modified landscapes is becoming clear. Areas such as industrial sites are sometimes presumed to have little conservation value, but many of these sites have areas of less disturbed habitats around their core infrastructure, which could provide ideal conditions to support some species, such as mesocarnivores. We conducted the first assessments of the density of serval (Leptailurus serval) at the Secunda Synfuels Operations plant, South Africa. We ran three camera trap surveys to estimate serval density using a spatially explicit capture recapture framework. Servals occurred at densities of 76.20-101.21 animals per 100 km2, which are the highest recorded densities for this species, presumably due to high abundance of prey and the absence of persecution and/or competitor species. Our findings highlight the significant conservation potential of industrialised sites, and we suggest that such sites could help contribute towards meeting conservation goals.

scholarly journals Leopard Density Estimation within an Enclosed Reserve, Namibia Using Spatially Explicit Capture-Recapture Models

Animals ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 724
Author(s):  
Noack ◽  
Heyns ◽  
Rodenwoldt ◽  
Edwards
Keyword(s):  
Management Strategies ◽  
Camera Traps ◽  
Spatially Explicit ◽  
Conservation Areas ◽  
Term Survival ◽  
New Class ◽  
Capture Recapture ◽  
Wildlife Populations ◽  
Effective Conservation

The establishment of enclosed conservation areas are claimed to be the driving force for the long-term survival of wildlife populations. Whilst fencing provides an important tool in conservation, it simultaneously represents a controversial matter as it stops natural migration processes, which could ultimately lead to inbreeding, a decline in genetic diversity and local extinction if not managed correctly. Thus, wildlife residing in enclosed reserves requires effective conservation and management strategies, which are strongly reliant on robust population estimates. Here, we used camera traps combined with the relatively new class of spatially explicit capture-recaptured models (SECR) to produce the first reliable leopard population estimate for an enclosed reserve in Namibia. Leopard density was estimated at 14.51 leopards/100 km2, the highest recorded density in Namibia to date. A combination of high prey abundance, the absence of human persecution and a lack of top-down control are believed to be the main drivers of the recorded high leopard population. Our results add to the growing body of literature which suggests enclosed reserves have the potential to harbour high densities and highlight the importance of such reserves for the survival of threatened species in the future.

scholarly journals Spatial capture–recapture models for jointly estimating population density and landscape connectivity

Ecology ◽  
2013 ◽  
Vol 94 (2) ◽  
pp. 287-294 ◽  
Author(s):  
J. Andrew Royle ◽  
Richard B. Chandler ◽  
Kimberly D. Gazenski ◽  
Tabitha A. Graves
Keyword(s):  
Population Density ◽  
Landscape Connectivity ◽  
Capture Recapture

Estimating population density and connectivity of American mink using spatial capture-recapture

2015 ◽  
Author(s):  
Angela K. Fuller ◽  
Chris S. Sutherland ◽  
J. Andrew Royle ◽  
Matthew P. Hare
Keyword(s):  
Population Density ◽  
American Mink ◽  
Capture Recapture

Using spatially‐explicit capture–recapture models to explain variation in seasonal density patterns of sympatric ursids

Ecography ◽  
2018 ◽  
Vol 42 (2) ◽  
pp. 237-248 ◽  
Author(s):  
Jeffrey B. Stetz ◽  
Michael S. Mitchell ◽  
Katherine C. Kendall
Keyword(s):  
Spatially Explicit ◽  
Capture Recapture
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