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Full-Text Articles in Life Sciences
Evaluating The Use Of Roving Diver And Transect Surveys To Assess The Coral Reef Fish Assemblage Off Southeastern Hispaniola, Emily Schmitt Lavin, Robert Sluka, Kathleen Sullivan-Sealey
Evaluating The Use Of Roving Diver And Transect Surveys To Assess The Coral Reef Fish Assemblage Off Southeastern Hispaniola, Emily Schmitt Lavin, Robert Sluka, Kathleen Sullivan-Sealey
Emily F Schmitt Lavin
The relatively little-studied fish fauna off southeastern Hispaniola was rapidly assessed using a combination of visual survey techniques including transects and roving diver surveys. It was found that when combined, both methods provided a more complete overall species assessment than either method was able to provide in isolation. Being able to conduct rapid species assessments is becoming increasingly more important as a conservation tool. Data on species composition, sighting frequency, and abundance of all fishes were collected using both methods. Abundance was recorded in four logarithmic-based categories (roving diver method) while the number of fishes were counted within 40-m2 transects …
Density And Cover Preferences Of Black-And-Rufous Elephant-Shrews (Rhynchocyon Petersi) In Chome Forest Reserve, Tanzania, Stephanie Coster, David Ribble
Density And Cover Preferences Of Black-And-Rufous Elephant-Shrews (Rhynchocyon Petersi) In Chome Forest Reserve, Tanzania, Stephanie Coster, David Ribble
David O Ribble
The objective of this study was to determine the density and habitat preference of the Black-andrufous elephant-shrew (Rhynchocyon petersi) in Chome Forest Reserve, Tanzania. Chome Forest (143km2) is located in the South Pare Mountains and provides critical habitat for endangered R. petersi. Twelve 300m transects were cut through the centre of the forest in an east-west direction and the number of elephant-shrew nests within 2.5 meters on each side of the transects was recorded. The mean number of nests per 100m transect (0.39 ± 0.47 [1SE]) translated to a density estimate of 19 elephant-shrews per km2 (SE=23). Nest sites tended …
Effects Of Population Size And Density On Pollinator Visitation, Pollinator Behavior, And Pollen Tube Abundance In Lupinus Perennis, Christopher Bernhardt, Randall Mitchell, Helen Michaels
Effects Of Population Size And Density On Pollinator Visitation, Pollinator Behavior, And Pollen Tube Abundance In Lupinus Perennis, Christopher Bernhardt, Randall Mitchell, Helen Michaels
Randall J. Mitchell
Both the number and the density of flowering plants in a population can be important determinants of pollinator abundance and behavior. We report the joint effects of population size and density on pollinator visitation and pollination success for Lupinus perennis (Fabaceae). Focusing on five pairs of populations, we matched one small population (125-800 flowering plants) with one distinctly larger population (1000-3000 flowering plants). In these pairs, population size did not affect pollinator communities or pollination success. All measures of pollination success increased significantly with density. Only bee behavior (number of flowers probed per inflorescence) exhibited a significant interaction of size …
The Evaluation Of Conservation Practice Placement In The Little River Experimental Watershed Using Geographic Information Systems, J Settimi, Dana Sullivan, Timothy Strickland
The Evaluation Of Conservation Practice Placement In The Little River Experimental Watershed Using Geographic Information Systems, J Settimi, Dana Sullivan, Timothy Strickland
John R. Settimi
The Conservation Effects Assessment Program Watershed Assessment Study is a joint effort between the USDA Natural Resources Conservation Service (NRCS) and the USDA Agricultural Research Service to evaluate the effectiveness of federally funded conservation programs. In response to this initiative, a 26-year history of NRCS conservation practice placement (1980 to 2006) was evaluated for the Little River Experimental Watershed (LREW) in the southeastern coastal plain of Georgia. To accomplish this task, currently available geographic databases were integrated and queried to assess levels of commonly adopted practices and to evaluate factors affecting practice placement. Databases included (1) USDA NRCS Conservation Practice …
Identifying Conservation-Priority Areas In The Tropics: A Land-Use Change Modeling Approach, Shaily Menon, R. Gil Pontius Jr., Joseph Rose, M. Khan, Kamaljit Bawa
Identifying Conservation-Priority Areas In The Tropics: A Land-Use Change Modeling Approach, Shaily Menon, R. Gil Pontius Jr., Joseph Rose, M. Khan, Kamaljit Bawa
Shaily Menon
Most quantitative methods for identifying conservation-priority areas require more detailed knowledge about the extent and distribution of biodiversity than is currently available. Accelerated and irreversible losses of biodiversity call for the development of alternative methods to identify priority sites for biodiversity inventory and protection. We focused on the state of Arunachal Pradesh, a biodiversity-rich region in northeast India. We used a geographic information system and spatially explicit modeling to examine the correlation of land-cover and land-use patterns with biogeophysical characteristics and to project future patterns of land-use change. In 1988, 70% of Arunachal Pradesh was covered by forest. We project …
Grassland In The Borderlands: Understanding Coupled Natural Human Systems And Transboundary Conservation, Ed Frederickson, G. Ceballos, R. List, A. Davidson, Sierra Corona, L. Martinez, J.E. Herrick, J. Pacheco
Grassland In The Borderlands: Understanding Coupled Natural Human Systems And Transboundary Conservation, Ed Frederickson, G. Ceballos, R. List, A. Davidson, Sierra Corona, L. Martinez, J.E. Herrick, J. Pacheco
Ed L. Frederickson
As conservationists well know, political borders rarely coincide with natural ecological boundaries. International borders such as that between the United States and Mexico traverse numerous ecosystems and watersheds. Many species of animals, birds, and insects regularly migrate between habitats across international borders. Conservation of Shared Environments collects works that take on the environmental issues along the U.S.-Mexico border. Covering topics as diverse as wildlife preservation, grassland ecology, water rights, indigenous peoples, and the ecological consequences of border security, the contributors to this volume offer not only scientific analysis but also insight on how to bridge the gaps between scientists, policy …
Cloning And Conservation Of Biological Diversity: Paradox, Panacea, Or Pandora's Box?, Shaily Menon, Kamaljit Bawa, Leah Gorman
Cloning And Conservation Of Biological Diversity: Paradox, Panacea, Or Pandora's Box?, Shaily Menon, Kamaljit Bawa, Leah Gorman
Shaily Menon
The success of a Scottish team in cloning a mammal from an adult tissue cell has generated considerable speculation in the popular press about potential applications to conservation biology. Possibilities that have been mentioned include cloning endangered species and creating gene banks for the germplasm of rare species. Sensational or inaccurate reports might encourage the mistaken notion that cloning technology is more advanced or reliable than it actually is. More important, such reports might foster the myth that there is no longer an urgency to conserve endangered species or their habitats as long as we have frozen germplasm and cloning …
Effectiveness Of The Protected Area Network In Biodiversity Conservation: A Case-Study Of Meghalaya State, M. Latif Khan, Shaily Menon, Kamaljit Bawa
Effectiveness Of The Protected Area Network In Biodiversity Conservation: A Case-Study Of Meghalaya State, M. Latif Khan, Shaily Menon, Kamaljit Bawa
Shaily Menon
The North-Eastern region of India is significant for biodiversity conservation because of its floristic richness and high levels of endemism. Deforestation levels are high in the region due to anthropogenic pressures. We accessed various literature sources to create a database for Meghalaya state containing information on plant species, habit, altitudinal distribution, endemism, and endangered status. Information on the existing protected area network (type, extent, and altitudinal representation) was added to the database. The database was used to assess the effectiveness of the existing protected area network in conserving the floristic biodiversity of the state. Of a total of 3331 plant …