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- Author:
- Johnson, Joshua B.; Gates, J. Edward; Ford, W. Mark
- Source:
- Urban ecosystems 2008 v.11 no.2 pp. 227-242
- ISSN:
- 1083-8155
- Subject:
- Eptesicus fuscus; Myotis septentrionalis; snags; urban areas; trees; urbanization; forests; acoustics; habitat fragmentation; ecosystems; piedmont; Myotis lucifugus; parks; detectors; traps; coastal plains; landscapes; U.S. National Park Service; habitats; Virginia; District of Columbia; West Virginia; Maryland
- Abstract:
- ... We examined the relationship between bat species activity and composition and the extent of forest cover and urbanization in and adjacent to 11 U.S. National Park Service, National Capital Region Parks in Maryland, Virginia, West Virginia, and Washington, D.C., from 2003-2004, using mist nets, harp traps, acoustical detectors, and visual observations in a variety of habitats. Our efforts included ...
- DOI:
- 10.1007/s11252-008-0055-x
-
http://dx.doi.org/10.1007/s11252-008-0055-x
- Author:
- McKinney, Michael L.
- Source:
- Urban ecosystems 2008 v.11 no.2 pp. 161-176
- ISSN:
- 1083-8155
- Subject:
- amphibians; birds; ecosystems; introduced species; invertebrates; mammals; plants (botany); reptiles; species diversity; suburban areas; urban areas; urbanization
- Abstract:
- ... Many studies have described the effects of urbanization on species richness. These studies indicate that urbanization can increase or decrease species richness, depending on several variables. Some of these variables include: taxonomic group, spatial scale of analysis, and intensity of urbanization. Recent reviews of birds (the most-studied group) indicate that species richness decreases with incr ...
- DOI:
- 10.1007/s11252-007-0045-4
-
http://dx.doi.org/10.1007/s11252-007-0045-4
- Author:
- Mannan, R. William; Steidl, Robert J.; Boal, Clint W.
- Source:
- Urban ecosystems 2008 v.11 no.2 pp. 141-148
- ISSN:
- 1083-8155
- Subject:
- Accipiter; breeding; case studies; ecological traps; ecosystems; hawks; monitoring; mortality; nestlings; urban areas; Arizona
- Abstract:
- ... We studied a population of Cooper's hawks (Accipiter cooperii) in Tucson, Arizona from 1994 to 2005. High rates of mortality of nestlings from an urban-related disease prompted speculation that the area represented an ecological trap and habitat sink for Cooper's hawks. In this paper, we used estimates of survival and productivity from 11years of monitoring to develop an estimate of the rate of po ...
- DOI:
- 10.1007/s11252-008-0056-9
-
http://dx.doi.org/10.1007/s11252-008-0056-9
- Author:
- Stabler, L. Brooke
- Source:
- Urban ecosystems 2008 v.11 no.2 pp. 197-211
- ISSN:
- 1083-8155
- Subject:
- aboveground biomass; biomass production; canopy; carbon; ecosystems; gas exchange; irrigation rates; leaf area; models; monitoring; plant density; pruning; shrubs; surveys; urban areas; water use efficiency; woody plants; xerophytes; Arizona
- Abstract:
- ... Woody plant productivity and water use were evaluated under various management regimes in the Central Arizona Phoenix Long Term Ecological Research study area during 1999-2003. Management was defined as alteration of plant density, irrigation of plants, and removal of plant biomass via pruning. In a ground survey of 204 randomly chosen sites woody plant canopy area (CA) was higher in developed plo ...
- DOI:
- 10.1007/s11252-008-0050-2
-
http://dx.doi.org/10.1007/s11252-008-0050-2
- Author:
- Ryan, Travis J.; Conner, Christopher A.; Douthitt, Brooke A.; Sterrett, Sean C.; Salsbury, Carmen M.
- Source:
- Urban ecosystems 2008 v.11 no.2 pp. 213-225
- ISSN:
- 1083-8155
- Subject:
- Trachemys scripta; ecosystems; females; habitat preferences; habitats; hibernation; highlands; humans; landscapes; males; radio telemetry; rivers; turtles; urban areas; urbanization; woodlands; Indiana
- Abstract:
- ... Our study focuses on the spatial ecology and seasonal habitat use of two aquatic turtles in order to understand the manner in which upland habitat use by humans shapes the aquatic activity, movement, and habitat selection of these species in an urban setting. We used radiotelemetry to follow 15 female Graptemys geographica (common map turtle) and each of ten male and female Trachemys scripta (red- ...
- DOI:
- 10.1007/s11252-008-0049-8
-
http://dx.doi.org/10.1007/s11252-008-0049-8
- Author:
- Ngo, N. S.; Pataki, D. E.
- Source:
- Urban ecosystems 2008 v.11 no.2 pp. 121-139
- ISSN:
- 1083-8155
- Subject:
- energy accounting; environmental impact; foods; greenhouse gas emissions; groundwater recharge; pollutants; population density; population growth; public policy; runoff; semiarid zones; urban areas; wastewater; United States
- Abstract:
- ... We conducted an urban “metabolic” study of inputs and outputs of food, water, energy, and pollutants from Los Angeles County, USA. This region has been the subject of recent debate about the nature of population density and distribution as it relates to urban form and associated environmental impacts. We found that with the exception of food imports and wastewater outputs, inputs of resources and ...
- DOI:
- 10.1007/s11252-008-0051-1
-
http://dx.doi.org/10.1007/s11252-008-0051-1
- Author:
- Ranta, Pertti
- Source:
- Urban ecosystems 2008 v.11 no.2 pp. 149-159
- ISSN:
- 1083-8155
- Subject:
- case studies; cities; endangered species; habitats; traffic; vascular plants; Finland
- Abstract:
- ... Traffic corridors have been recognized as floristically rich with endangered and rare species included. The aim of this study is to treat traffic corridors as habitats and estimate their importance for diversity of vascular plants on municipal level. The material is derived from the comprehensive studies of urban floras in the cities of Vantaa, Kerava and Järvenpää during the 1990s in southern Fin ...
- DOI:
- 10.1007/s11252-008-0058-7
-
http://dx.doi.org/10.1007/s11252-008-0058-7