Applying Nature's Design: Corridors as a Strategy for by Anthony Anderson, Clinton N. Jenkins

By Anthony Anderson, Clinton N. Jenkins

The fragmenting of habitats is endangering animal populations and degrading or destroying many plant populations in the course of the global. to handle this challenge, conservationists have more and more grew to become to organic corridors, parts of land put aside to facilitate the circulation of species and ecological procedures. although, whereas 1000s of hall projects are lower than means world wide, there's little functional info to steer their layout, place, and administration. Applying Nature's Design deals a complete evaluation of present wisdom on corridors, their layout, and their implementation. Anthony B. Anderson and Clinton N. Jenkins research a number of conceptual and sensible matters linked to corridors and supply certain case stories from worldwide. Their paintings considers the best way to deal with and govern corridors, easy methods to construct help between a number of curiosity teams for corridors, and the hindrances to implementation. as well as assessing a number of environmental and ecological demanding situations, the authors are the 1st to contemplate the significance of socioeconomic and political concerns in growing and holding corridors.

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Extra info for Applying Nature's Design: Corridors as a Strategy for Biodiversity Conservation (Issues, Cases, and Methods in Biodiversity Conservation)

Sample text

Other ways to reduce conflicts between roadways and wildlife include installing wider bridges over ravines and waterways, installing fencing to keep animals away or signs to warn drivers, and closing roads seasonally (Bennett 1991). Corridor Design 43 Design Application and Guidelines Scientists have identified some general design guidelines that can increase the biological value of corridors and help minimize the potential negative impacts discussed in chapter 2. We give a brief summary here, but see Harris and Scheck 1991, Noss 1991, and Thorne 1993 for more detailed discussion.

Many group-living prey animals, such as white-tailed deer (Odocoileus virginianus), wild horses (Equus caballus), and dwarf mongoose (Helogale parvula)—which minimize predation risk by dispersing through short, rapid transfers between groups—appear to fit this model. By comparison, large carnivores tend to disperse much farther, traveling until they find a suitable territory. Few mammals, however, disperse more than five home-range diameters from the locale where they are born (Harrison 1992). Knowledge of focal species’ social organization can also shed light on dispersal patterns and corridor use, particularly in mammals.

Connectivity The three major factors that determine a corridor’s connectivity are: (i) the number and size of gaps in the corridor habitat, (ii) the presence of alternative pathways or networks, and (iii) the existence of larger habitat patches, or “nodes,” along the corridor (fig. 2:D). The degree of connectivity desired depends on the nature of the species and/or ecological processes that the corridor is designed to enhance. Many Corridor Design 39 fi g u r e 3 . 2 Factors affecting corridor connectivity.

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