LOGIN TO YOUR ACCOUNT

Username
Password
Remember Me
Or use your Academic/Social account:

CREATE AN ACCOUNT

Or use your Academic/Social account:

Congratulations!

You have just completed your registration at OpenAire.

Before you can login to the site, you will need to activate your account. An e-mail will be sent to you with the proper instructions.

Important!

Please note that this site is currently undergoing Beta testing.
Any new content you create is not guaranteed to be present to the final version of the site upon release.

Thank you for your patience,
OpenAire Dev Team.

Close This Message

CREATE AN ACCOUNT

Name:
Username:
Password:
Verify Password:
E-mail:
Verify E-mail:
*All Fields Are Required.
Please Verify You Are Human:
fbtwitterlinkedinvimeoflicker grey 14rssslideshare1
Chaulk, Keith G.; Robertson, Gregory J.; Montevecchi, William A. (2004)
Publisher: Co-Action Publishing
Journal: Polar Research
Languages: English
Types: Article
Subjects:
Nesting densities are often used to estimate breeding population size and with other measures of reproductive performance can be useful indicators of population status. These aspects of breeding biology often show considerable spatial and temporal variation. Between 2000 and 2003, we surveyed nesting common eiders (Somateria mollissima) on 172 islands in three archipelagos (Nain, Hopedale, Rigolet) on the Labrador coast. Rigolet was the largest archipelago (2834 km2) followed by Nain then Hopedale, and island density varied inversely with archipelago size. Overall means were: nest density 52.0 ± 141.9 (SD) nests/ha; nest initiation 12 June ± 12 days; clutch size 3.7 ± 1.2 eggs/nest; egg volume 98.8 ± 10.4 cm3; and clutch volume 392.3 ± 135.0 cm3. Rigolet had the highest average egg volumes and nest densities, the highest single island nest density of 1053 nests/ha, and the earliest average nest initiation date. We found significant differences in nest densities among archipelagos and across years; significant archipelago and year interactions were detected for nest initiation date and clutch size. Significant differences were found among individual islands for all response variables except egg volume. For egg volume, within-archipelago island differences were not significant, but between-archipelago differences were significant. Thus egg volume may be a useful diagnostic to identify population affiliation.
  • The results below are discovered through our pilot algorithms. Let us know how we are doing!

    • Abraham, K. F. & Finney, G. H. 1986: Eiders of the eastern Canadian Arctic. In A. Reed (ed.): Eider ducks in Canada. Can. Wildl. Serv. Rep. Ser. 47, 55-73.
    • Avise, J. C. & Hamrick, J. L. (eds.) 1996: Conservation Genetics. London: Chapman & Hall.
    • Bregnballe, T. 2002: Clutch size in six Danish common eider Somateria mollissima colonies: variation in egg production. In H. Noer & G. Nehls (eds.): Population processes in the common eider Somateria mollissima. Danish Review of Game Biology 16. Rønde, Denmark.
    • Chapdelaine, G., Dupuis, P. & Reed, A. 1986: Distribution, abundance et fluctuations des populations d'Eider à Duvet dans l'estuaire et le golfe du Saint-Laurent. (Distribution, abundance, and fluctuation of eider populations in the St. Lawrence estuary and gulf). In A. Reed (ed.): Eider ducks in Canada. Can. Wildl. Serv. Rep. Ser. 47, 6-11.
    • Choate, J. S. 1967: Factors influencing nesting success of eiders in Penobscot Bay, Maine. J. Wildl. Manage. 31, 769-777.
    • Cooch, F. G. 1986: The numbers of nesting northern eiders on the West Foxe islands, NWT, in 1956 and 1976. In A. Reed (ed.): Eider ducks in Canada. Can. Wildl. Serv. Rep. Ser. 47, 114-118.
    • Coulson, J. C. 1984: The population dynamics of the eider duck Somateria mollissima and evidence of extensive nonbreeding by adult ducks. Ibis 126, 525-543.
    • Coulson, J. C. 1999: Variation in clutch size of the common eider: a study based on 41 breeding seasons on Coquet Island, Northumberland, England. Waterbirds 22, 225-238.
    • Erikstad, K. E., Bustnes, J. O. & Moum, T. 1993: Clutch-size determination in precocial birds: a study of the common eider. Auk 110, 623-628.
    • Erikstad, K. E., Tveraa, T. & Bustnes, J. O. 1998: Signficance of intraclutch egg-size variation in common eider: the role of egg size and quality of ducklings. J. Avian Biol. 29, 3-9.
    • Falardeau, G., Rail, J.-F., Gilliland, S. & Savard, J.-P. L. 2003: Breeding survey of common eiders along the west coast of Ungava Bay, in summer 2000, and a supplement on other nesting aquatic birds. Can. Wildl. Serv. Tech. Rep. Ser. No. 405.
    • Götmark, F. & Åhlund, M. 1984: Do field observers attract nest predators and influence nesting success of common eiders. J. Wildl. Manage. 48, 381-387.
    • Goudie, R. I., Robertson, G. J. & Reed, A. 2000: Common eider (Somateria mollissima). The birds of North America (A. Poole & F. Gill, eds.) 546. Philadelphia, The Birds of North America Inc.
    • Guild, B. L. 1974: The breeding biology of the Hudson Bay Eider at La Pérouse Bay, Manitoba. M.Sc. thesis. Wright State University, Dayton, OH.
    • Hanssen, S. A., Folstad, I. & Erikstad, K. E. 2002: Incubation start and egg size in relation to body reserves in the common eider. Behav. Ecol. Sociobiol. 52, 282-288.
    • Hanssen, S. A., Folstad, I. & Erikstad, K. E. 2003: Reduced immunocompetence and cost of reproduction in common eiders. Oecologia 136, 457-464.
    • Hario, M. & Selin, K. 1988: Thirty-year trends in an eider population: timing of breeding, clutch size and nest preferences. Finn. Game Res. 45, 3-10.
    • Hario, M. & Selin, K. 2002: Cohort-specific differences in reproductive output in a declining common eider Somateria mollissima population. In H. Noer & G. Nehls (eds.): Population processes in the common eider Somateria mollissima. Danish Review of Game Biology 16. Rønde, Denmark.
    • Korschgen, C. E. 1977: Breeding stress of female eiders in Maine. J. Wildl. Manage. 41, 360-373.
    • Lack, D. 1967: The significance of clutch size in waterfowl. Wildfowl 18, 125-128.
    • Laurila, T. & Hario, M. 1988. Environmental and genetic factors influencing clutch size, egg volume, date of laying and female weight in the common eider Somateria mollissima. Finn. Game Res. 45, 19-30.
    • Lewis, H. F. 1939: Size of sets of eggs of the American eider. J. Wildl. Manage. 3, 70-73.
    • Lopoukhine, N., Prout, N. A. & Hirvonen, H. E. 1978: The ecological land classification of Labrador: a reconnaissance. Environment Canada, Series 4.
    • Meades, S. J. 1990: Natural regions of Newfoundland and Labrador. St. John's, Newfoundland: Protected Areas Association of Newfoundland and Labrador.
    • Mendall, H. L. 1980: Intergradation of eastern North American common eiders. Can. Field Nat. 94, 286-292.
    • Merkel, F. R. 2004: Evidence of population decline in common eiders breeding in western Greenland. Arctic 57, 27-36.
    • Milne, H. 1974: Breeding numbers and reproductive rate of eiders at the Sands of Forvie National Nature Reserve, Scotland. Ibis 116, 135-154.
    • Mohr, C. O. 1947: Table of equivalent populations of North American small mammals. Am. Midl. Nat. 37, 223-249.
    • Nakashima, D. J. & Murray, D. J. 1988: The common eider (Somateria mollissima mollissima) of eastern Hudson Bay: a survey of nest colonies and Inuit ecological knowledge. Environ. Stud. Revolv. Funds Rep. 102.
    • Nettleship, D. N. 1980: Census techniques for seabirds of arctic and eastern Canada. Canadian Wildlife Service Occasional Paper 25. Ottawa.
    • Nettleship, D. N. & Evans, P. G. H. 1985: Distribution and status of Atlantic alcidae. In D. N. Nettleship & T. R. Birkhead (eds.): The Atlantic Alcidae. Pp. 53-154 London: Academic Press.
    • Robertson, G. J. 1995: Annual variation in common eider egg size: effects of temperature, clutch size, laying date, and laying sequence. Can. J. Zool. 73, 1579-1587.
    • Robertson, G. J. & Gilchrist, H. G. 1998: Evidence of population declines among common eiders breeding in the Belcher Islands, Northwest Territories. Arctic 51, 378-385.
    • Robertson, G. J. Reed, A. & Gilchrist, H. G. 2001: Clutch, egg and body size variation among common eiders breeding in Hudson Bay, Canada. Polar Res. 20, 85-94.
    • Rohwer, F. C. 1992: The evolution of reproductive parameters in waterfowl. In B. D. Batt et al. (eds.): Ecology and management of breeding waterfowl. Pp. 486-539. Minneapolis: Univ. Minnesota Press.
    • Ryder, J. P. 1970: A possible factor in the evolution of clutch size in Ross' goose. Wilson Bull. 82, 5-13.
    • Schmutz, J. K., Robertson R. J. & Cooke, F. 1983: Colonial nesting of the Hudson Bay eider duck. Can. J. Zool. 61, 2424-2433.
    • Scott, J. M., Heglund, P. J., Morrison, M. L., Haufler, J. B., Raphael, M. G., Wall, W. A. & Samson, F. B. (eds.). 2002: predicting species occurrences: issues of accuracy and scale. Covelo, CA: Island Press.
    • Sokal, R. R. & Rohlf, F. J. 1995: Biometry: the principles and practice of statistics in biological research. Third edition. San Francisco: W.H. Freeman and Company.
    • Swennen, C. 1983: Reproductive output of eiders (Somateria mollissima mollissima) on the southern border of its breeding range. Ardea 71, 245-254.
    • Swennen, C. & van der Meer, J. 1992: Variation in egg size of common eiders. Ardea 80, 363-373.
    • Swennen, C. 2002: Development and population dynamics of common eider Somateria mollissima colonies in the Netherlands. In H. Noer & G. Nehls (eds.): Population processes in the common eider Somateria mollissima. Danish Review of Game Biology 16. Rønde, Denmark.
    • Weller, M. W. 1956: A simple field candler for waterfowl eggs. J. Wildl. Manage. 20, 111-113.
  • No related research data.
  • No similar publications.

Share - Bookmark

Cite this article

Collected from