A5069530008- Wildlife Ecology and Conservation
- Rangeland and Wildlife Management
- Avian ecology and behavior
- Ecology and Vegetation Dynamics Studies
- Wildlife-Road Interactions and Conservation
- Species Distribution and Climate Change
- Animal Ecology and Behavior Studies
- Forest Management and Policy
- Marine animal studies overview
- Land Use and Ecosystem Services
- Fire effects on ecosystems
- Ecology and biodiversity studies
- Plant and animal studies
- Urban Green Space and Health
- Urban Agriculture and Sustainability
- Botany and Plant Ecology Studies
- Livestock and Poultry Management
- Botany, Ecology, and Taxonomy Studies
- Mercury impact and mitigation studies
- Agricultural pest management studies
- Turfgrass Adaptation and Management
- Forest Ecology and Biodiversity Studies
- Animal Behavior and Welfare Studies
- Heavy metals in environment
- Fish Ecology and Management Studies
United States Geological Survey
2015-2024
University of Massachusetts Amherst
2015-2024
University of Arizona
1997-2017
Louisiana Department of Wildlife and Fisheries
2005
GTx (United States)
2002
Oregon State University
1998
United States Fish and Wildlife Service
1997
Animal movement is fundamental for ecosystem functioning and species survival, yet the effects of anthropogenic footprint on animal movements have not been estimated across species. Using a unique GPS-tracking database 803 individuals 57 species, we found that mammals in areas with comparatively high human were average one-half to one-third extent their low footprint. We attribute this reduction behavioral changes individual animals exclusion long-range from higher impact. Global loss...
Aim To demonstrate how the interrelations of individual movements form large-scale population-level movement patterns and these are associated with underlying landscape dynamics by comparing ungulate across species. Locations Arctic tundra in Alaska Canada, temperate forests Massachusetts, Patagonian Steppes Argentina, Eastern Mongolia. Methods We used relocation data from four species (barren-ground caribou, Mongolian gazelle, guanaco moose) to examine interrelation among individuals....
With the growth and expansion of human development, large mammals will increasingly encounter humans, elevating likelihood human-wildlife conflicts. Understanding behavior movement mammals, particularly around is important for crafting effective conservation management plans these species. We used GPS collar data from American black bears (Ursus americanus) to determine how seasonal food resources development affected bear patterns resource use across Commonwealth Massachusetts. found that...
Most scrub-shrub bird species are declining in the northeastern United States, and these declines largely attributed to regional habitat availability. American Beaver (Castor canadensis; hereafter “beaver”) populations have been increasing Northeast recent decades, beavers create through their dam-building foraging activities. Few systematic studies conducted on value of beaver-modified habitats for birds, data important understanding selection birds as well assessing availability species....
The alteration of forest cover and the replacement native vegetation with buildings, roads, exotic vegetation, other urban features pose one greatest threats to global biodiversity. As more land becomes slated for development, identifying effective wildlife management tools paramount ensure provides habitat sustain bird populations. primary goal this study was integrate suitability indices an existing national assessment tool, i-Tree. We quantified available characteristics forests ten...
From 1995 through 1999, 2,240 individuals of 28 species waterbirds were examined in the United States for ingested lead fishing weights. A combination radiography and visual examination stomachs was used to search weights blood liver samples from live birds carcasses, respectively, collected analysis. Ingested found most frequently Common Loon (Gavia immer) (11 313 = 3.5%) Brown Pelican (Pelecanus occidentalis) (10 365 2.7%), but also one 81 (1.2%) Double-crested Cormorants (Phalacrocorax...
Feces from 62 beavers (Castor canadensis) in Massachusetts were examined by fluorescence microscopy (IFA) and polymerase chain reaction (PCR) for Microsporidia species, Cryptosporidium spp., Giardia spp. between January 2002 December 2004. PCR-positive specimens further gene sequencing. Protist parasites detected 6.4% of the beavers. All subadults kits. species not detected. was IFA four beavers; also two these However, sequence data ssrRNA spp.-positive inconclusive identifying species....
Abstract Ungulates are leading drivers of plant communities worldwide, with impacts linked to animal density, disturbance and vegetation structure, site productivity. Many ecosystems have more than one ungulate species; however, few studies specifically examined the combined effects two or species on communities. We extent which browsers (moose [ Alces americanus ]) white‐tailed deer Odocoileus virginianus additive (compounding) compensatory (opposing) herbaceous layer composition diversity,...
Abstract Roads can result in negative effects on wildlife including habitat loss, behavioral avoidance, reduced survival, reproduction and gene flow. These road are especially pronounced for large mammals given their home‐range requirements low reproductive rates. To counteract these effects, mitigation measures, such as underpasses overpasses, promoted; however, future landscape changes rarely considered when selecting locations. We used GPS telemetry data female American black bears Ursus...
Many biologists speculate on the nocturnal behavior of wildlife. Night-vision technologies may provide ways to move beyond speculation observation activity. Nocturnal activity data collection is often secondary broader study objectives; consequently, techniques for such studies are poorly understood and infrequently used. We reviewed 53 papers examine image enhancement (i.e., night vision) assess trends in research techniques. also conducted a field roosting cranes (Grus spp.) evaluate...
Abstract The common loon ( Gavia immer ) breeds during the summer on northern lakes and water bodies that are also often desirable areas for aquatic recreation human habitation. In New England, we assessed how spatial nature of disturbance affects nest site selection territory success. We found through classification regression analysis distance to density factors can be used classify observed locations versus random points, suggesting these affect (model 1: Correct = 75%, null 50%, K 0.507,...
Abstract We conducted a 4‐year study of beavers Castor canadensis to compare the movements, survival and habitat adults established in existing colonies juveniles dispersing new sites region with high beaver densities along suburban–rural gradient. Estimates annual were for adult juvenile beavers. Of nine known mortalities, seven (78%) juveniles. Mortalities occurred during spring–summer, none fall–winter. There was trend toward higher‐to‐lower gradient, respectively. Human‐induced mortality...
Past studies on the nesting habitat of northern goshawks (Accipiter gentilis) often relied nests found opportunistically, either during timber-sale operations, by searching apparently good' goshawk habitat, or other search methods where areas were preselected based known forest conditions, Therefore, a bias in characterization surrounding nest sites may exist toward late-forest structure (large trees, high canopy closure). This potential problem has confounded interpretation data and added...