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Showing 1 to 20 of 122 for “"habitat requirements"”.
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Habitat Requirements and Foraging Ecology of the Madagascar Fish-Eagle
… prey in the world. I investigated the ecological requirements of the Madagascar fish-eagle in 1994 and 1995 to help determine management action to prevent its extinction. I investigated fish-eagle foraging ecology in 1996 to determine its prey preference and whether fish abundance and availability …
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Habitat requirements of the black bear in Dare County, North Carolina
A black bear habitat requirements study was performed in Dare County, North Carolina from March, 1973 through February, 1974. Four adult male bears were radio-collared and their movements monitored. Two removed their collars within 2 weeks of release, while another's collar malfunctioned. …
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Water Flow and Sediment Texture as Co-Varying Submersed Aquatic Vegetation (SAV) Habitat Requirements
… of water flow and sediment texture as co-varying habitat parameters of submerged aquatic vegetation (SAV) in the Chesapeake Bay. An outdoor mesocosm experiment was conducted to test the response of SAV (Zostera marina and Ruppia maritima) to combinations of water flows and sediment grain sizes …
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Landscape-scale habitat requirements of flower-visiting insects in the Nene Valley Nature Improvement Area
… within the Nene Valley NIA, ultimately producing habitat suitability maps within a Geographical Information System (GIS). <br/>This study examines data collected from 34 grassland sites between 2013 and 2015 in the Nene Valley NIA. Overall 1692 individuals were recorded, and 103 species observed, …
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Variation In Habitat Thresholds: An Analysis Of Minimum Habitat Requirements Of North American Breeding Birds
… or persistence probability at particular habitat amounts. These `extinction thresholds' could be translated to conservation targets, under the condition that we can derive generalities. I investigated the level of variation in landscape-level habitat thresholds for a suite of North …
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Use of GIS and Remote Sensing Technologies to Study Habitat Requirements of Ocelots, Leopardus pardalis, in south Texas
… technologies to gain a better understanding of habitat requirements of a population of ocelots in south Texas, and then apply this knowledge to form a predictive model to locate areas of suitable habitat in Willacy and Cameron counties, Texas. Satellite imagery from August 1991 and August 2000 …
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Using eDNA and Habitat Suitability Modeling to Better Understand the Range and Habitat Requirements of the Eastern Black Rail
… to detect due to their small size, concealing habitat, and cryptic behavior. The most common survey method for rails uses audio callback but does not detect unresponsive individuals, is constrained seasonally as well as temporally, and requires significant personnel effort. New methods are …
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Ecology of the Early Life History of the Caribbean Spiny Lobster, <i>Panulirus argus:</i> Recruitment, Predation, and Habitat Requirements
… predator assemblages near reefs. In benthic habitats, predation was highest in coral crevices than in nearshore seagrass or macroalgae. To compare the role of a possible alternative nursery habitat to that of the south Florida system, I studied the population dynamics of juvenile spiny …
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Habitat ecology of the Painted Bunting on the Ozark Plateau
… calls for the consideration of such species' requirements by resource management agencies. These requirements must first be determined before a particular species can be considered in any management scheme. The primary purpose of this study was to determine the habitat requirements of the …
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The Ecology of the Endangered Dusky Gopher Frog (Rana Sevosa) and a Common Congener, the Southern Leopard Frog (Rana Sphenocephala)
… a common (Rana sphenocephala) frog in changing habitats, to determine why these two species differ in their persistence. I include additional studies investigating the habitat requirements and behavior of R. sevosa. I found that habitat change in the form of canopy closure over breeding ponds …
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Strategic Concessions: Negotiating Human Land Use to Serve the Habitat Needs of the Eastern Meadowlark
… is facing increased populations and scarcity of habitat for a variety of species. Encroaching on these landscapes while engaging in habitat fragmentation and destruction, has negatively impacted biodiversity and subsequently put thousands of species at risk of going extinct. With humans causing …
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Inferring rare bumble bee species occurrences from nontarget bumble bee assemblages
… are hindered by imperfect detection and complex habitat requirements, I explored nontarget bumble bees as potential surrogates for inferring or predicting the local presence of B. affinis, focusing on taxonomic diversity (richness, abundance, composition), co-occurrence patterns, multispecies …
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Ecology of ragadia makuta (lepidoptera: satyrinae) in tropical rainforests of Sabah, Malaysia.
… monthly from March 1999 to February 2000 in two habitat types, unlogged forest and forest that had been selectively logged 10 to 11 years previously. THe primary aim was to investigate the effects of selective logging on R. makuta abundance and distribution. Transect walk-and-count and point …
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Seasonal Microhabitat Use of Young-of-the-Year Bull Trout, Salvelinus Confluentus, in a Drought Year
This study examined the microhabitat use of young-of-the-year (YOY) bull trout, <em>Salvelinus confluentus, </em>throughout the summer and fall of 2015 in Gold Creek, a third order Cascade Mountain stream near Snoqualmie Pass, WA. It is crucial to understand YOY habitat requirements, as this life …
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Predicting Amphibian Occurrence Based on Wetland and Landscape Level Factors in Montana
… a complex life history that requires a mosaic of habitats, including breeding, foraging, and over-wintering areas. Historically, regulators have focused on wetland breeding habitat quality to explain amphibian presence. Recently, other habitat requirements including landscape level factors have …
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Predicting Amphibian Occurrence Based on Wetland and Landscape Level Factors in Montana
… a complex life history that requires a mosaic of habitats, including breeding, foraging, and over-wintering areas. Historically, regulators have focused on wetland breeding habitat quality to explain amphibian presence. Recently, other habitat requirements including landscape level factors have …
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Habitat suitablity modelling in the New Forest National Park.
… landscape which contains many species and habitats which are rare and/or threatened. In order to effectively aid in the conservation of these species, particularly in the face of climate change, there is a requirement to know their habitat requirements and distributions within the New …
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Ecologically Based Methods for Multi-Objective Water Resources Management in Taiwan
… a fish autecology matrix that considers physical habitat, spawning, ecological issues, water quality issues, and human values for Northern Taiwan. By using the matrix analysis method, fish community habitat requirements can be identified. The Taiwan Ecohydrology Index System (TEIS) has been …
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