Nature in Fragments: The Legacy of Sprawl (New Directions in by Elizabeth A. Johnson, Michael W. Klemens

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By Elizabeth A. Johnson, Michael W. Klemens

This new assortment makes a speciality of the impression of sprawl on biodiversity and the measures that may be taken to relieve it. best organic and social scientists, conservationists, and land-use pros learn how sprawl impacts species and alters traditional groups, ecosystems, and typical procedures. The members combine biodiversity matters, matters, and wishes into the growing to be variety of anti-sprawl tasks, together with the "smart progress" and "new urbanist" pursuits.

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If the single habitat required by those orchid and beetle species is divided into smaller pieces that become increasingly separated, or if the multiple habitats required, for example, by amphibians and elk are also spatially isolated within the larger landscape, the structure of the fragmented landscape must permit safe passage of individuals between habitat patches for these individuals and populations to survive (on connectivity, see Sanjayan and Crooks, chapter 11, this volume). Human-dominated habitat matrices are inhospitable to many native species (see the box “Human Activities and Novel Disturbances”).

CONSERVATION RECOMMENDATIONS The question that conservationists must grapple with is: If not “here,” then “where”? It is neither sufficient nor responsible to oppose sprawl without supporting an alternative. Development can bring important benefits when done with a healthy regard for environmental resources, economic impact, and social consequences. S. population is expected to grow by another 100 million people before the middle of the twenty-first century. How and where are these people to be accommodated?

Animals that use a mosaic of wetland and upland habitats during their life cycle, such as the Blanding’s turtle (Emydoidea blandingii) and red-spotted newt (Notophthalmus viridescens); plants with limited dispersal capability, such as orchids; or species with small home ranges, such as carabid beetles and small mammals such as voles, are also sensitive to changes brought about by development (Byers and Mitchell, chapter 8, this volume). , beach-nesting birds, such as the piping plover). Another challenge to biologists and planners alike is that changes that may be imperceptible to us can drastically alter the habitat for some plants and animals.

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