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Using a bioclimatic envelope approach, University of Alberta investigators project how the distribution and abundance of boreal forest birds across North America will respond to different scenarios of future climate-change. Investigation emphasis is on mapping and quantifying potential range expansions of boreal bird species into Arctic and subarctic regions across Alaska and Canada. The final products demonstrate a broad continental-scale overview of potential shifts in avian distribution.
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Many Arctic shorebird populations are declining, and quantifying adult survival and the effects of anthropogenic factorsis a crucial step toward a better understanding of population dynamics. We used a recently developed, spatially explicitCormack–Jolly–Seber model in a Bayesian framework to obtain broad-scale estimates of true annual survival rates for 6species of shorebirds at 9 breeding sites across the North American Arctic in 2010–2014. We tested for effects ofenvironmental and ecological variables, study site, nest fate, and sex on annual survival rates of each species in thespatially explicit framework, which allowed us to distinguish between effects of variables on site fidelity versus truesurvival. Our...
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Arctic wetlands, where millions of local and migratory birds nest, are composed of a mosaic of ice wedge polygons, non-patterned tundra, and large vegetated drained thaw lake basins. Regional climate projections suggest that evapotranspiration, rainfall, and snowfall will increase, making it difficult to predict how surface water distribution might change and how habitats for the invertebrate resources used by waterbirds will be impacted. This study will focus on evaluating how climate change will affect the invertebrate community, and whether the change in climate (through changes in hydrology and surface energy balance) could induce a trophic mismatch that might alter the growth and survival of shorebird young....
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Climate models project the rapid warming of boreal and arctic regions of NorthAmerica. This has led to predictions that boreal forest vegetation and fauna will track these changes andshift northward into the arctic over the next century. We used a comprehensive dataset of avian pointcountsurveys from across boreal Canada and Alaska, combined with the best-available interpolatedclimate data, to develop bioclimatic niche models of current avian distribution and density for 102 nativespecies of forest songbirds. We then used a downscaling of projected climates in future periods (2011–2040, 2041–2070, 2071–2100) to assess the potential for these species to shift their ranges and increasetheir abundance across North...
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We have gathered information on all known recaptures and resightings of marked Dunlin throughout the East-Asian Australasian flyway, as well as opportunistically at other locations. The objectives of this study were to (1) identify regional connectivity patterns within and among subspecies of Dunlin migrating and wintering along the EAAF, (2) examine the regional connectivity patterns of Dunlin of unknown subspecies captured and marked at sites on the nonbreeding grounds, (3) examine recovery patterns of arcticola Dunlin initially captured on the NW and NE portions of their Alaska breeding range, (4) examine recovery patterns of arcticola males and females, (5) examine recovery patterns of arcticola Dunlin of different...
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The roselaari subspecies of Red Knot is one of the rarest shorebird populations breeding in North America, based on a the current population size estimate of 17,000 individuals (Carmona et al 2013). As a result of suspected declines,the roselaari subspecies has been designated as threatened by the Committee on the Status of Endangered Wildlife in Canada and was petitioned for listing under the U.S. Endangered Species Act. The U.S. Fish and Wildlife Service’s decision to not conduct a full status review for listing was based on the lack of substantial information identifying threats and population trends (USFWS 2011). The apparent low population size coupled with the scarcity of information on many demographic and...
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The Shorebird Demographic Network is an international collaboration designed to evaluate how climate mediated changes in the arctic ecosystem are affecting shorebird distribution, ecology, and demography. The main purpose of the network is to monitor demographic parameters (e.g. nest success, adult survival) of widely distributed shorebirds, so that we may develop conservation strategies that tackle the most pressing problems facing these declining species. The Arctic LCC contribution adds monitoring components that track key environmental attributes (e.g. water and prey availability) that are expected to link climate with changing shorebird populations.This project attempted to evaluate portions of two conceptual...
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The Arctic Shorebird Demographic Network (Network) is aninternational collaboration dedicated to gaining a betterunderstanding of why arctic-nesting shorebirds are in declineand determine which life history stage (i.e., breeding success vs.adult survival) is limiting shorebird population growth ordriving declines.
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To better understand and predict effects of climate change on wetlands, invertebrates and shorebirds, the ‘CEWISH’ group,composed of Cryohydrology, Invertebrate, Shorebird Food Use, and Shorebird/Population Modeling teams, collected fielddata at Barrow, Alaska, between May and September 2014–2015. The Cryohydrology team measured end-of-wintersnow accumulation, snowmelt at the landscape scale, pond water levels, and pond water and sediment temperatures. TheInvertebrate team monitored emergence at historic ponds, and documented emergence rates of dominant chironomid taxaunder different experimentally controlled thermal regimes. The Shorebird Food Use team developed a DNA library ofpotential prey items using samples...
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This file contains information on Dunlin resightings and recaptures along the East Asian-Australasian flyway, and elsewhere, including date and time, location, and band combination of resighting or recapture, as well as tagging information. A portion of these data (as indicated by field ‘Lagasse.2020’) were used to determine migration along the East Asian–Australasian Flyway (EAAF). General methods are available in Lagassé et al. 2020. Dunlin subspecies exhibit regional segregation and high site fidelity along the East Asian–Australasian Flyway. The Condor: Ornithological Applications 122. https://doi.org/10.1093/condor/duaa054. For this analysis data were restricted to resightings within the EAAF that occurred...


    map background search result map search result map ASDN: a Network of Sites to Evaluate How Climate-mediated Change in the Arctic Ecosystem are Affecting Shorebird Distribution, Ecology, and Demography Environmental and ecological conditions at Arctic breeding sites have limited effects on true survival rates of adult shorebirds Final Report Narrative to National Fish and Wildlife Fund:  Climate, Wetlands and Waterbirds Interdisciplinary Project Interdisciplinary Study of How Climate Change May Affect Wetland Habitats, Invertebrates and Shorebirds Shorebird Demographic Network Factsheet Modeling Avifaunal Responses Executive Summary Modeling avifaunal responses to climate change in North America's boreal-Arctic transition zone Alaska Red Knot Breeding Ecology Study 2010-Present Dunlin resightings and recaptures along the East-Asian Australasian flyway Dunlin resightings in East Asian-Australasian flyway publications Dunlin resightings along East Asian–Australasian Flyway Alaska Red Knot Breeding Ecology Study 2010-Present Final Report Narrative to National Fish and Wildlife Fund:  Climate, Wetlands and Waterbirds Interdisciplinary Project Interdisciplinary Study of How Climate Change May Affect Wetland Habitats, Invertebrates and Shorebirds ASDN: a Network of Sites to Evaluate How Climate-mediated Change in the Arctic Ecosystem are Affecting Shorebird Distribution, Ecology, and Demography Environmental and ecological conditions at Arctic breeding sites have limited effects on true survival rates of adult shorebirds Shorebird Demographic Network Factsheet Modeling Avifaunal Responses Executive Summary Modeling avifaunal responses to climate change in North America's boreal-Arctic transition zone Dunlin resightings and recaptures along the East-Asian Australasian flyway Dunlin resightings in East Asian-Australasian flyway publications Dunlin resightings along East Asian–Australasian Flyway