Perlman - Practical Ecology for Planners, Developers and Citizens - Chapter 6 pdf

... agricultural land. Figure 6- 1 b. In this photo, a forest corridor stretches between two patches of forest within a matrix of unforested wetlands and farmlands. Figure 6- 1 c. Here, small patches of farmland ... ge- ographers, and landscape planners in West Germany and the Netherlands in the 6 The Ecology of Landscapes ber of different niches available), disturbances, and other...

Ngày tải lên: 06/07/2014, 14:20

... thirty-year) vi- sion for the future and will serve as the basis for your jurisdiction’s official zon- ing map as well as for decisions related to public facility and infrastructure in- vestment, land ... its ecology, and its conservation status, which should be depicted in map form whenever appro- priate. (Sources and approaches for gathering such information are discussed in...

Ngày tải lên: 06/07/2014, 14:20

... HUMANS, NATURE, AND INTERACTIONS Figure 1-1 . This sample site map shows a fifty-acre (20 ha) farm, including fields, farm buildings, a stream and wetlands, and some forest. Like many maps and plans, ... their lives in the wetland. Land use planners, designers, and developers usually work within unam- biguous geographic boundaries and over relatively short time periods. In con...

Ngày tải lên: 06/07/2014, 14:20

... sala- manders and other species in their community.They would ask which species eat the salamanders, which ones the salamanders eat, and which ones compete with the salamanders for food and other ... and engineering-oriented individuals, and an ethical argument that avoids discus- sions of money and appeals directly to human intuition. For land use planners and the constitue...

Ngày tải lên: 06/07/2014, 14:20

... intentionally, for use either in gar- dens or in erosion control and land reclamation projects and some species, such as kudzu, have been imported for both purposes (see Box 3-1 ). Unfortunately, as ... however, the town-become-city now ex- tends well out into the neighboring farmlands, rangelands, and mountains and has become part of a larger metropolitan complex (see Figure 3-...

Ngày tải lên: 06/07/2014, 14:20

... once again forested. Stands of white pine covered many abandoned fields and pastures, while other open-land specialists—gray birch, aspens, and cherries—filled other abandoned farmlands. The turn ... species, and how energy and nu- trients flow through the landscape. These topics relate directly to land use and offer planners and designers specific recommendations for improving the...

Ngày tải lên: 06/07/2014, 14:20

... into a handful of guide- lines for ecologically based planning and design. First, as we plan human land uses, it is important to understand the patterns of native populations and meta- populations ... bullfrogs and mosquitofish, also compete with red-legged frogs for specific food sources. Both bullfrogs and mosquitofish were introduced to California by humans for food and mosqui...

Ngày tải lên: 06/07/2014, 14:20

... Land cover data usually distinguish among various types of forests, grasslands, or wetlands (e.g., coniferous forest versus mixed forest versus hard- wood forest) and are especially helpful for ... the original reason for creating the park. Category 4: Multi-use managed areas. These are true multi-use lands, man- aged for production (e.g., timber, livestock, and mining), recreation,...

Ngày tải lên: 06/07/2014, 14:20

... natural and semi-natural areas of various types; in the next chapter, we will discuss how damaged lands can be restored and how natural and semi-natural lands can be managed for long- term ecological ... urban and suburban areas will almost always be multiple-use lands, providing some level of utility for plants and animals as well as for humans. Yet, how these lands are plan...

Ngày tải lên: 06/07/2014, 14:20

... mechanics.The information pro- vided here is intended to help planners and designers assess when and how restoration might play a part in their projects, understand and critique restora- tion plans and designs ... example, ecologists use fire and clearing (tree and shrub cutting) to change forests to more open ecosystem types, such as savannas, shrublands, and grass- lands. Once...

Ngày tải lên: 06/07/2014, 14:20