Suspected Long-Term Population Increases in Common Eiders, &lt;em&gt;Somateria mollissima&lt;/em&gt;, on the Mid-Labrador Coast, 1980, 1994, and 2006

Chaulk, Keith G.

doi:10.22621/cfn.v123i4.998

Cited by 4 publications

(6 citation statements)

References 15 publications

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“…This was found to be the case across all regions and time periods. This is similar to the eider nesting distribution detected in Labrador (Chaulk, 2006) and Ungava Bay, Canada (Chapdelaine et al 1986;Falardeau et al 2003). Similar to the Belcher Islands, these archipelagos consist of complex networks of hundreds of islands that vary in size.…”

Section: Colony Size Distribution and The Effect Of Initial Colony Si...supporting

confidence: 84%

“…4.0 eggs in 2021 and 3.9 eggs in 2022). Eiders also show high nesting fidelity to island clusters (Chaulk et al, 2006;Melhum, 2012;Sonsthagen et al, 2009), so nesting re-distribution across regions surveyed in different years should be negligible.…”

Section: Discussionmentioning

confidence: 99%

“…Nesting on small islands is believed to be for the avoidance of terrestrial nest predators (e.g., foxes and minks) (Laurila, 1989;Waltho and Coulson, 2015). While many studies describe eiders as being a colonial species (e.g., Chaulk, 2006;Schmutz et al, 1983), others suggest that nesting aggregation is mainly the result of scarcity of suitable habitat (e.g., Parker and Melhum, 1991;Waltho and Coulson, 2015). Different island characteristics can influence eider nesting site selection.…”

Section: Study Subjectmentioning

confidence: 99%

“…In the eastern Canadian Arctic, key eider breeding areas are found along the coasts of Labrador, Hudson Strait, Hudson Bay, Ungava Bay, and Frobisher Bay (Goudie et al, 2020). To monitor these populations, breeding surveys have been conducted sporadically since 1956 (see for examples Cooch, 1965;Chapdelaine et al, 1986;Chaulk, 2006;Dey et al, 2018;Falardeau et al, 2003;Nakashima and Murray 1988). Despite these survey efforts, information about the status and nesting distribution of many Arctic populations of common eider is poorly known or outdated (Bowman et al, 2015).…”

Section: Study Subjectmentioning

confidence: 99%

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Learnings from collaborative monitoring of remote wildlife populations: factors affecting changes in number and distribution of nesting Hudson Bay eiders ducks in the Belcher Islands

Richard¹

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Anthropogenic pressures are causing a global decline in biodiversity that, in turn, impacts the human communities depending on it. In the conservation effort, efficient management requires up-to-date and accurate information about the population dynamics, habitat requirements, and distribution of organisms. There is an increasing appreciation of the benefits of coproduction and the combination of multiple knowledge systems to increase our understanding of the rapidly changing ecosystems. In this thesis, I used data from a long-term collaborative monitoring program involving Inuit and federal government researchers to study the factors affecting changes in population size and nesting distribution of a harvested sea duck in south-eastern Hudson Bay, the common eider (Somateria mollissima). I also highlight practical challenges and propose solutions related to cultural and institutional barriers that impede the delivery of respectful approaches and best practices in collaborative research programs involving large and regulated institutions and remote Indigenous communities. Many thanks to Holly Hennin who provided essential logistical support for the realization of the fieldwork and who consistently helped me navigate Environment Canada and Carleton University's various administrative procedures. Thank you to all my student colleagues who, despite the COVID-19 pandemic, strived to create a pleasant social dynamic within our lab. Particularly, thanks to Adam Perkovic and Allison Drake for numerous fun and enriching conversation about Arctic research. Thankfully to generous funding from Grant Gilchrist's research funds, Environment and Climate Change Canada, Carleton University, and the Weston Familly Foundation, I was able to complete this thesis without financial stress. Finally, I'm especially grateful to Grant Gilchrist. For now more than eight years, I have been privileged to collaborate on various research projects in the Arctic within the program he is co-leading. Through this work, I have learned a ton, traveled to wonderful remote places, and particularly met amazing people. It was a privilege to work alongside such a great person and researcher.v Thesis Format and ContributionsThis thesis consists of a general introduction and discussion, and two co-authored manuscripts (Chapters 2 and 3). Chapter 2 is in preparation for submission to a peer-reviewed journal, and chapter 3 has been submitted to the peer-reviewed journal Ecological Solution and Evidence. The repetition of specific definitions and details is at times necessary so that chapters can stand alone. Chapter 2. Factors affecting changes in the number and distribution of nesting HudsonBay eiders in the Belcher Islands.

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Section: Colony Size Distribution and The Effect Of Initial Colony Si...supporting

confidence: 84%

Section: Discussionmentioning

confidence: 99%

Section: Study Subjectmentioning

confidence: 99%

Section: Study Subjectmentioning

confidence: 99%

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Learnings from collaborative monitoring of remote wildlife populations: factors affecting changes in number and distribution of nesting Hudson Bay eiders ducks in the Belcher Islands

Richard¹

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“…In northern Labrador, eiders are typically found on islands smaller than 30 ha (Chaulk 2009). Eider clutch sizes typically range from 3 to 4 eggs (Goudie et al 2000) with nesting in Labrador typically beginning in early to mid-June (Chaulk et al 2004).…”

Section: Introductionmentioning

confidence: 99%

Does spring ice cover influence nest initiation date and clutch size in common eiders?

Chaulk

Mahoney²

2011

Polar Biol

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Understanding how environmental factors aVect ecological parameters is important to understanding and predicting impacts of environmental change. Given evidence and anticipated impacts of climate variability, this is especially true with respect to sea ice and its role in animal life history in northern regions. We examined relationships between the extent of consolidated spring ice cover (pack and landfast), nest initiation and clutch size in common eiders (Somateria mollissima) in northern Labrador, a sub-Arctic region on the east coast of Canada. Our initial prediction was that eiders would delay nesting and have smaller clutches in years with more extensive spring ice cover. Between 1998 and 2003, we surveyed coastal islands for breeding eiders and collected information on nest age and clutch size. For those years, we estimated ice cover based on Radarsat-1 images supplied by the Canadian Ice Service during the spring period (approximately June 7-12). We found that spring ice cover was a signiWcant positive predictor of nest initiation date, and the regression equation indicated that if the average extent of ice cover around nesting islands increased by 18 ha, average nesting date was delayed by approximately 1 day. Nest initiation date was a signiWcant negative predictor of clutch size, and the regression equation indicated that a 20 day delay in nesting reduced average clutch size by approximately 1 egg. However, ice cover itself was not a signiWcant predictor of clutch size. Our Wndings suggest that eiders breed when ice is present, but ice extent may negatively inXuence aspects of their breeding ecology.

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Population trends of king and common eiders from spring migration counts at Point Barrow, Alaska between 1994 and 2016

et al. 2019

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Suspected Long-Term Population Increases in Common Eiders, <em>Somateria mollissima</em>, on the Mid-Labrador Coast, 1980, 1994, and 2006

Cited by 4 publications

References 15 publications

Learnings from collaborative monitoring of remote wildlife populations: factors affecting changes in number and distribution of nesting Hudson Bay eiders ducks in the Belcher Islands

Learnings from collaborative monitoring of remote wildlife populations: factors affecting changes in number and distribution of nesting Hudson Bay eiders ducks in the Belcher Islands

Does spring ice cover influence nest initiation date and clutch size in common eiders?

Population trends of king and common eiders from spring migration counts at Point Barrow, Alaska between 1994 and 2016

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