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| Registros recuperados: 13.863 | |
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| Theobald, David M; Colorado State University; davet@nrel.colostate.edu. |
| In the United States, citizens, policy makers, and natural resource managers alike have become concerned about urban sprawl, both locally and nationally. Most assessments of sprawl, or undesired growth patterns, have focused on quantifying land-use changes in urban and metropolitan areas. It is critical for ecologists to examine and improve understanding of land-use changes beyond the urban fringe—also called exurban sprawl—because of the extensive and widespread changes that are occurring, and which often are located adjacent to or nearby “protected” lands. The primary goal of this paper is to describe the development of a nationwide, fine-grained database of historical, current, and forecasted housing density,... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Cross-scale edge; Exurban sprawl; Forecast model; Landscape sprawl metric; Land-use change; Resilience. |
| Ano: 2005 |
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| Rothley, Kristina; Simon Fraser University; krothley@sfu.ca. |
| Least-cost modeling is an increasingly popular method used to measure the effective distance between habitat patches and to assess the connectivity of existing landscapes or potential reserves. For least-cost models to be reliable and credible, however, the validity of input data must be demonstrated. Least-cost modelers must also exercise extreme caution when using any GIS-based analysis of this kind. Technical issues associated with the raster-based representation of spatial data may introduce errors in otherwise correct data that nullify results. In this paper, I address the potential presence of "cracks" in the resistance input layer of least-cost modeling exercises. Cracks result when narrow, costly features, such as roads or train tracks, are... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Connectivity analysis; Cracks; Least-cost modeling; Resistance layers.. |
| Ano: 2005 |
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| Cinner, Joshua; James Cook University; joshua.cinner@jcu.edu.au. |
| For generations communities in the Western Pacific have employed a range of resource management techniques (including periodic reef closures, gear restrictions, entry limitations, and the protection of spawning aggregations) to limit marine resource use. Localized control over marine resources, commonly known as customary marine tenure (CMT), is the legal and cultural foundation for many of these practices. Because of their perceived potential to meet both conservation and community goals, these traditional resource management techniques are being revitalized by communities, governments, and NGOs as an integral part of national and regional marine conservation plans in the Pacific. However, the viability of conservation strategies built on a foundation... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Customary marine tenure; Common-property; Socioeconomic; Papua New Guinea; Indonesia.. |
| Ano: 2005 |
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| Jensen, Ryan; Indiana State University; r-jensen@indstate.edu; Gatrell, Jay; ;; Boulton, Jim; ;; Harper, Bruce; ;. |
| This study examines urban quality of life by assessing the relationship between observed socioeconomic conditions and urban forest amenities in Terre Haute, Indiana, USA. Using remote-sensing methods and techniques, and ordinary least squares regression, the paper determines the relationship between urban leaf area and a population density parameter with median income and median housing value. Results demonstrate positive correlations between urban leaf area, population density, and their interaction with median income and median housing value. Furthermore, leaf area, density, and their interaction statistically account for observed variance in median income and median housing value, indicating that these variables may be used to study observed... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Leaf area index; Remote sensing; Urban forestry; Urban quality of life. |
| Ano: 2005 |
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| Reuss, Martin; U.S. Army Corps of Engineers; Martin.A.Reuss@HQ02.USACE.ARMY.MIL. |
| River ecologists are also river-basin planners. However, their role in planning has developed slowly over the decades since the beginning of the 20th century. Three major factors explain this phenomenon. First, ecologists focused on plant and animal communities rather than on broader policy issues related to land settlement and water development. Second, the federal government, and most state and local governments as well, used mainly economic criteria to justify projects. Intangible benefits, including the value of species or an aesthetically pleasing landscape, drew relatively little attention. Third, the public generally favored development, especially during the Great Depression of the 1930s. Only after World War II did the public's position shift in... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: History; Ecology; River basins; Water management; Planning; Benefit-cost analysis; Multiobjective planning; River restoration; Geomorphology. |
| Ano: 2005 |
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| Registros recuperados: 13.863 | |
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