A5007016477- Avian ecology and behavior
- Wildlife Ecology and Conservation
- Rangeland and Wildlife Management
- Species Distribution and Climate Change
- Marine animal studies overview
- Animal Ecology and Behavior Studies
- Climate variability and models
- Indigenous Studies and Ecology
- Botany, Ecology, and Taxonomy Studies
- Ecology and biodiversity studies
- Fish Ecology and Management Studies
- Animal Behavior and Reproduction
- Fire effects on ecosystems
- Marine and coastal plant biology
- Marine and fisheries research
- Plant and animal studies
- Bat Biology and Ecology Studies
- Bird parasitology and diseases
- Arctic and Antarctic ice dynamics
- Physiological and biochemical adaptations
- Digital Imaging for Blood Diseases
- Arctic and Russian Policy Studies
- Plant Ecology and Taxonomy Studies
- Invertebrate Taxonomy and Ecology
- Influenza Virus Research Studies
U.S. Geological Survey, Alaska Science Center
2013-2024
United States Geological Survey
2015-2024
United States Fish and Wildlife Service
1977-2020
Cornell University
2020
Cornell Lab of Ornithology
2020
University of Alaska Fairbanks
2020
Bear Valley
2020
University of Kansas
2018
Massey University
2011
Fisheries and Oceans Canada
2009
Mountain ranges, deserts, ice fields and oceans generally act as barriers to the movement of land-dependent animals, often profoundly shaping migration routes. We used satellite telemetry track southward flights bar-tailed godwits (Limosa lapponica baueri), shorebirds whose breeding non-breeding areas are separated by vast central Pacific Ocean. Seven females with surgically implanted transmitters flew non-stop 8,117-11,680 km (10153+/-1043 s.d.) directly across Ocean; two males external...
We documented fat loads and abdominal organ sizes of Bar-tailed Godwits (Limosa lapponica baueri) that died after colliding against a radar dome on the Alaska Peninsula, most likely just takeoff trans-Pacific flight 11,000 km, birds same subspecies before northward departure from New Zealand. compared these data with body composition godwits smaller obtained during stopover in The Netherlands. As consequence high amounts subcutaneous intraperitoneal fat, very small fat-free mass, had...
Migrating birds make the longest non‐stop endurance flights in animal kingdom. Satellite technology is now providing direct evidence on lengths and durations of these associated staging episodes for individual birds. Using this technology, we compared migration performance two subspecies bar‐tailed godwit Limosa lapponica travelling between non‐breeding grounds New Zealand (subspecies baueri ) northwest Australia menzbieri breeding Alaska eastern Russia, respectively. Individuals both made...
The global spread of the highly pathogenic avian influenza H5N1 virus has stimulated interest in a better understanding mechanisms dispersal, including potential role migratory birds as carriers. Although wild have been found dead during outbreaks, evidence suggests that others survived natural infections, and recent studies shown several species ducks capable surviving experimental inoculations shedding virus. To investigate possibility means dispersal into North America, we monitored for...
We review the conservation issues facing migratory shorebird populations that breed in temperate regions and use wetlands non‐breeding season. Shorebirds are excellent model organisms for understanding ecological, behavioural evolutionary processes often used as indicators of wetland health. A global team experienced researchers identified 45 these populations, divided them into three categories (natural, current anthropogenic future issues). The natural included megatsunamis, volcanoes...
Populations of the Bar-tailed Godwit (Limosa lapponica; Scolopacidae) embark on some longest migrations known among birds. The baueri race breeds in western Alaska and spends nonbreeding season a hemisphere away New Zealand eastern Australia; menzbieri Siberia migrates to northern Australia. Although Siberian birds are follow coast Asia during both migrations, southern pathway followed by breeders has remained unknown. Two questions have particular ecological importance: (1) do godwits...
Growing concern over the contribution of freshwater reservoirs to increases in atmospheric greenhouse gas (GHG) concentrations and relevance long-term continuous measurements has led Fisheries Oceans Canada, conjunction with Manitoba Hydro, develop GHG monitors. Continuous water pCO2, pCH4, pO2 were gathered estimate fluxes one temperate reservoir (Rivière-des-Prairies) two boreal (Eastmain-1 Robert-Bourassa) Québec, four (Grand Rapids, Jenpeg, Kettle, McArthur Falls) Manitoba, Canada. Mean...
Abstract The Pacific Basin, by virtue of its vastness and complex aeroscape, provides unique opportunities to address questions about the behavioral physiological capabilities mechanisms through which birds can complete spectacular flights. No longer is seen just as a formidable barrier between terrestrial habitats in north south, but rather gateway for specialized species, such shorebirds, make living on hemispherically distributed seasonal resources. This recent change perspective...
A 6-year study of shorebird use intertidal habitats the Yukon-Kuskokwim Delta revealed this area to be one premiere sites for shorebirds throughout Holarctic and worthy designation as a Hemispheric Shorebird Reserve in Western Hemisphere Network. The area, which covered 10% (300 km2) delta's flats, regularly hosted 17 species between late April mid-October. greatest was during postbreeding period (late June-October), when Dunlins (Calidris alpina), Sandpipers (C. mauri), Rock ptilocnemis),...
Making a detour can be advantageous to migrating bird if fuel-deposition rates at stopover sites along the are considerably higher than more direct route. One example of an extensive migratory is that Sharp-tailed Sandpiper (Calidris acuminata), which large numbers juveniles found during fall migration in western Alaska. These birds take 1500–3400 km from most route between their natal range northeastern Siberia and nonbreeding areas Australia. We studied autumnal fueling fuel loads 357...
Abstract Populations of the Bar-tailed Godwit (Limosa lapponica; Scolopacidae) embark on some longest migrations known among birds. The baueri race breeds in western Alaska and spends nonbreeding season a hemisphere away New Zealand eastern Australia; menzbieri Siberia migrates to northern Australia. Although Siberian birds are follow coast Asia during both migrations, southern pathway followed by breeders has remained unknown. Two questions have particular ecological importance: (1) do...
Conservation of long-distance migratory shorebirds is complex because these species use habitats spread across continents and hemispheres, making identification critical potential bottlenecks in the annual cycle especially difficult. The population Black-tailed Godwits that breeds Western Europe, Limosa limosa limosa, has declined precipitously over past few decades. Despite significant efforts to identify root causes this decline, much remains unclear. To better understand timing, stopover...
Abstract The study of avian movement has detailed a spectrum strategies for the timing and use sites throughout annual cycle, from near randomness to complete consistency. New tracking devices now permit repeated individual animals detailing previously unappreciated levels variation within migratory systems. Godwits (genus Limosa) have featured prominently in studies migration, but information derived individuals is limited. Marbled Godwit subspecies Limosa fedoa beringiae breeds on central...
Abstract Nesting distribution, age-related seasonal movements, survivorship, and mechanisms of population expansion in Pacific Coast Caspian Terns (Sterna caspia) were examined primarily through analysis 412 recoveries birds banded as juveniles between 1935 1980. Since the beginning this century, has shifted from nesting numerous small colonies associated with freshwater marshes interior California southern Oregon to large on human-created habitats along coast. Colonies at Grays Harbor,...
The sharp-tailed sandpiper (Calidris acuminata) is a long-distance migrant that travels each year from breeding grounds in the Russian Arctic to nonbreeding areas Australasia. Most adults migrate rapidly along largely inland route through Asia. Here we report on highly unusual migratory strategy of this species which some juveniles, but virtually no adults, take pronounced detour western Alaska before proceeding southward migration. We analyzed data our own studies region and published...
Abstract In migratory animals, high mobility may reduce population structure through increased dispersal and enable adaptive responses to environmental change, whereas rigid routines predict low dispersal, structure, limited flexibility respond change. We explore the global phylogeographic history of bar‐tailed godwit, Limosa lapponica , a shorebird known for making longest non‐stop flights any landbird. Using nextRAD sequencing 14,318 single‐nucleotide polymorphisms scenario‐testing in an...
Summary 1. Birds of marine environments have specialized glands to excrete salt, the saltglands. Located on skull between eyes, size these organs is expected reflect their demand, which will vary with water turnover rates as a function environmental (heat load, salinity prey and drinking water) organismal (energy physiological state) factors. On basis inter‐ intraspecific comparisons saltgland mass ( m sg ) in 29 species shorebird (suborder Charadrii) from saline, fresh mixed habitats, we...