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1. Using integrated population models for insights into monitoring programs: An application using pink-footed geese

Author:
Johnson, Fred A.; Zimmerman, Guthrie S.; Jensen, Gitte H.; Clausen, Kevin K.; Frederiksen, Morten; Madsen, Jesper
Source:
Ecological modelling 2020 v.415 pp. 108869
ISSN:
0304-3800
Subject:
Anser; breeding; case studies; geese; integrated pest management; models; monitoring; population size; water birds; Norway
Abstract:
... Development of integrated population models (IPMs) assume the absence of systematic bias in monitoring programs, yet many potential sources of systematic bias in monitoring data exist (e.g., under-counts of abundance). By integrating multiple sources of data, we can assess whether various sources of monitoring data provide consistent inferences about changes in population size and, thus, whether m ...
DOI:
10.1016/j.ecolmodel.2019.108869

2. Emperor geese (Anser canagicus) are exposed to a diversity of influenza A viruses, are infected during the non‐breeding period and contribute to intercontinental viral dispersal

Author:
Ramey, Andrew M.; Uher‐Koch, Brian D.; Reeves, Andrew B.; Schmutz, Joel A.; Poulson, Rebecca L.; Stallknecht, David E.
Source:
Transboundary and emerging diseases 2019 v.66 no.5 pp. 1958-1970
ISSN:
1865-1674
Subject:
Anser; Influenza A virus; antibodies; autumn; breeding; coasts; ecology; emerging diseases; females; geese; hemagglutinins; immunity; molting; monitoring; seroconversion; spring; viruses; Alaska; East Asia; Russia
Abstract:
... Emperor geese (Anser canagicus) are endemic to coastal areas within Beringia and have previously been found to have antibodies to or to be infected with influenza A viruses (IAVs) in Alaska. In this study, we use virological, serological and tracking data to further elucidate the role of emperor geese in the ecology of IAVs in Beringia during the non‐breeding period. Specifically, we assess eviden ...
DOI:
10.1111/tbed.13226

3. Avian Influenza Virus Surveillance in High Arctic Breeding Geese, Greenland

Author:
Gaidet, Nicolas; Leclercq, India; Batéjat, Christophe; Grassin, Quentin; Daufresne, Tanguy; Manuguerra, Jean-Claude
Source:
Avian diseases 2018 v.62 no.2 pp. 237-240
ISSN:
1938-4351
Subject:
Anser; Branta; Influenza A virus; breeding; breeding sites; flocks; geese; lakes; migratory behavior; molting; monitoring; summer; viruses; water birds; wild birds; Arctic region; Greenland
Abstract:
... The connectedness in Arctic regions between migratory waterbird populations originating from different continents and the potential for virus exchange at their shared Arctic breeding ground point to the need to explore the largely unstudied circumpolar circulation of avian influenza viruses (AIV). We here report the investigation of AIV in wild birds and lakes in a high Arctic area of Northeast Gr ...
DOI:
10.1637/11793-010418-ResNote.1

4. Body Mass Dynamics of Pink-Footed Geese (Anser brachyrhynchus) During Stopover on Autumn Migration in Norway

Author:
Gundersen, Ove M.; Clausen, Kevin K.; Madsen, Jesper
Source:
Waterbirds 2017 v.40 no.4 pp. 353-362
ISSN:
1524-4695
Subject:
Anser; adults; autumn; breeding; breeding season; breeding sites; brood rearing; females; geese; juveniles; males; temperature; waterfowl; winter; Norway
Abstract:
... Body mass accumulation is a widely used measure of waterfowl condition and predictor of fitness. So far, however, post-breeding changes in body mass affecting autumn and winter condition have been largely unexplored. Here, changes in body mass of Pink-footed Geese (Anser brachyrhynchus) were investigated during an autumn stopover in Nord-Trøndelag, Norway. Average juvenile body mass varied from ye ...
DOI:
10.1675/063.040.0407

5. Late snow melt moderates herbivore disturbance of the Arctic tundra

Author:
Anderson, Helen B.; Speed, James D.M.; Madsen, Jesper; Pedersen, Åshild Ø.; Tombre, Ingunn M.; van der Wal, René
Source:
Écoscience 2016 v.23 no.1-2 pp. 29-39
ISSN:
2376-7626
Subject:
Anser; breeding; breeding sites; ecosystems; foraging; geese; habitats; herbivores; melting; nesting; nests; phytomass; population growth; population size; snowmelt; snowpack; soil; tundra
Abstract:
... Resilience of tundra vegetation to disturbance by herbivores can be low and lead to ecosystem state shifts. Pink-footed geese Anser brachyrhynchus are the most numerous herbivore on Svalbard and disturb vegetation when foraging for below-ground plant biomass (grubbing). We assessed grubbing extent (occurrence of vegetation disturbance) and intensity (proportion of vegetation disturbed) in 2006/07/ ...
DOI:
10.1080/11956860.2016.1212684

6. Using habitat selection theories to predict the spatiotemporal distribution of migratory birds during stopover – a case study of pink‐footed geese Anser brachyrhynchus

Author:
Chudzińska, Magda E.; van Beest, Floris M.; Madsen, Jesper; Nabe‐Nielsen, Jacob
Source:
Oikos 2015 v.124 no.7 pp. 851-860
ISSN:
0030-1299
Subject:
Anser; agricultural land; breeding; case studies; environmental factors; foraging; geese; habitats; intraspecific competition; migratory behavior; models; nutrient intake; nutritive value; predation; risk; spring; temporal variation
Abstract:
... Understanding how animals select for habitat and foraging resources therein is a crucial component of basic and applied ecology. The selection process is typically influenced by a variety of environmental conditions including the spatial and temporal variation in the quantity and quality of food resources, predation or disturbance risks, and inter‐ and intraspecific competition. Indeed, some of th ...
DOI:
10.1111/oik.01881

7. Where to settle in a rapidly expanding bird colony: a case study on colony expansion in High Arctic breeding geese

Author:
Anderson, Helen B.; Madsen, Jesper; Woodin, Sarah J.; van der Wal, René
Source:
Behavioral ecology and sociobiology 2015 v.69 no.2 pp. 325-334
ISSN:
0340-5443
Subject:
Anser; adults; breeding; breeds; case studies; foraging; geese; habitats; migratory behavior; nesting; nesting sites; nests; predation; predators; summer; Arctic region
Abstract:
... As colonies fill up with more individuals, areas of preferred nesting habitat can become scarce. Individuals attracted to the colony by the presence of conspecifics may then occupy nest sites with different habitat characteristics to that of established breeders and, as a result, experience lower nesting success. We studied a rapidly growing colony of Svalbard pink-footed geese Anser brachyrhynchu ...
DOI:
10.1007/s00265-014-1845-1

8. Measuring neck collar loss of Pink-footed Geese Anser brachyrhynchus

Author:
Clausen, Kevin Kuhlmann; Frederiksen, Morten; Madsen, Jesper
Source:
Bird study 2015 v.62 no.1 pp. 137-140
ISSN:
1944-6705
Subject:
Anser; breeding; collars; females; geese; males; mark-recapture studies; neck
Abstract:
... Capsule The ability to estimate mark loss of ringed animals is important to assess demographic parameters from mark-recapture studies correctly. Based on 23 years of neck collar recovery data from the Svalbard breeding population of Pink-footed Geese, we estimate an overall average annual loss rate of 3.2%. Neck collar loss was similar between males and females, and did not (based on currently ava ...
DOI:
10.1080/00063657.2014.992858

9. Connectivity between flyway populations of waterbirds: assessment of rates of exchange, their causes and consequences

Author:
Madsen, Jesper; Tjørnløv, Rune S.; Frederiksen, Morten; Mitchell, Carl; Sigfússon, Arnór Th.; Pärt, Tomas
Source:
Journal of applied ecology 2014 v.51 no.1 pp. 183-193
ISSN:
0021-8901
Subject:
Anser; breeding; breeding sites; geese; gene flow; probability; snowpack; spring; water birds; winter; Belgium; Denmark; Iceland; Netherlands; Norway; United Kingdom
Abstract:
... Conservation and management of migratory waterbirds use flyway populations as the basic unit, and knowledge of the delineation, rate of exchange and gene flow between populations is fundamental. However, for the majority of global flyway populations, information is too fragmentary to address connectivity between populations and, hence, insufficient to inform management. We investigated the demogra ...
DOI:
10.1111/1365-2664.12183

10. Nordens Ark - a university conservation field station

Author:
ANDRÉN, C.; BLOMQVIST, L.; LINDÉN, L.M.
Source:
International zoo yearbook 2011 v.45 no.1 pp. 18-29
ISSN:
0074-9664
Subject:
woodpeckers; Bufo; schools; threatened species; Anser; breeding; geese; universities; breeds; wild animals; Falco peregrinus; toads; zoos
Abstract:
... Nordens Ark is a non-profit foundation aiming to provide self-sustainable viable populations of threatened species through conservation breeding and reintroduction programmes. In 2001, an important decision was made to be part of a scientific society with close contacts to universities, and to appoint a professor in conservation biology as the scientific leader. Together with the universities, new ...
DOI:
10.1111/j.1748-1090.2010.00122.x

11. Resource partitioning in sympatric arctic-breeding geese: summer habitat use, spatial and dietary overlap of Barnacle and Pink-footed Geese in Svalbard

Author:
FOX, TONY (A.D.); EIDE, NINA E.; BERGERSEN, ESPEN; MADSEN, JESPER
Source:
Ibis 2009 v.151 no.1 pp. 122-133
ISSN:
0019-1019
Subject:
Anser; Branta; breeding; community structure; diet; food availability; food choices; foraging; goslings; habitat preferences; habitats; lakes; nesting; nesting sites; nests; population density; rivers; seasonal variation; snowpack; summer; valleys; vegetation
Abstract:
... The spatial, habitat and dietary overlap of two breeding goose species was studied in Sassendalen, Svalbard, in summer 2003 based on abundance within 500 x 500-m grid squares and faecal diet analyses during pre-breeding, nesting and post-hatching periods. More than half of all Pink-footed Geese Anser brachyrhynchus occurred in the absence of Barnacle Geese Branta leucopsis during nesting and post- ...
DOI:
10.1111/j.1474-919X.2008.00892.x