Structural connectivity at a national scale: Wildlife corridors in Tanzania

PloS One
Jason Riggio, Tim Caro

Abstract

Wildlife corridors can help maintain landscape connectivity but novel methods must be developed to assess regional structural connectivity quickly and cheaply so as to determine where expensive and time-consuming surveys of functional connectivity should occur. We use least-cost methods, the most accurate and up-to-date land conversion dataset for East Africa, and interview data on wildlife corridors, to develop a single, consistent methodology to systematically assess wildlife corridors at a national scale using Tanzania as a case study. Our research aimed to answer the following questions; (i) which corridors may still remain open (i.e. structurally connected) at a national scale, (ii) which have been potentially severed by anthropogenic land conversion (e.g., agriculture and settlements), (iii) where are other remaining potential wildlife corridors located, and (iv) which protected areas with lower forms of protection (e.g., Forest Reserves and Wildlife Management Areas) may act as stepping-stones linking more than one National Park and/or Game Reserve. We identify a total of 52 structural connections between protected areas that are potentially open to wildlife movement, and in so doing add 23 to those initially identified ...Continue Reading

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Citations

Oct 3, 2020·Ecology and Evolution·Christian KiffnerBernard Kissui

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Software Mentioned

Google Earth
GE
Focal Statistics
Linkage Mapper
GE Grids
TAWIRI
ESRI ArcGIS
Circuitscape

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