Matley, Jordan K; Fisk, Aaron T; Dick, Terry A (2012): Seabird density and predation on Arctic cod (Boreogadus saida) in Allen Bay in 2010 [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.816022, Supplement to: Matley, JK et al. (2012): Seabird predation on Arctic cod during summer in the Canadian Arctic. Marine Ecology Progress Series, 450, 219-228, https://doi.org/10.3354/meps09561
Always quote citation above when using data! You can download the citation in several formats below.
Abstract:
Seabirds feed heavily on Arctic cod Boreogadus saida during the summer in the Canadian Arctic but little is known of the interactions among birds while foraging and the factors that drive feeding behaviour. The objective of this study was to describe the relationship between seabirds and Arctic cod in a productive feeding area distant from breeding colonies. Transect surveys were completed using standardized count protocols to determine the density of seabirds in Allen Bay, Cornwallis Island, Nunavut. Shore-based observation sites determined seabird foraging behaviour associated with the presence of schools and environmental variables. The density of birds (156 bird/km**2) was high compared to that of other locations in the Canadian Arctic. Several bird species were more active early in the morning and with winds from the south, possibly due to an increase in Arctic cod feeding on zooplankton at the surface. Northern fulmars Fulmarus glacialis and black-legged kittiwakes Rissa tridactyla captured Arctic cod directly from the water; however, they lost nearly 25% of captures to glaucous gulls Larus hyperboreus and parasitic jaegers Stercorarius parasiticus. These kleptoparasitic seabirds benefited the most in Allen Bay obtaining as much as 8 times more Arctic cod than species capturing cod directly. Northern fulmars captured 3 times more Arctic cod from schools, and black-legged kittiwakes captured similar proportions of schooling and non-schooling cod. We conclude that non-schooling Arctic cod are as important as schooling cod as an energy source for seabirds in nearshore areas, such as Allen Bay, during the summer.
Project(s):
Coverage:
Latitude: 74.740900 * Longitude: -95.078000
Date/Time Start: 2010-08-13T00:00:00 * Date/Time End: 2010-08-17T00:00:00
Event(s):
Comment:
Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
4 datasets
Download Data
Datasets listed in this publication series
- Matley, JK; Fisk, AT; Dick, TA (2013): (Table 4) Feeding attempts and successful captures of schooling and non-schooling Arctic cod by Fulmarus glacialis in Allen Bay 2010. https://doi.org/10.1594/PANGAEA.816021
- Matley, JK; Fisk, AT; Dick, TA (2012): (Table 2) Cod (Boreogadus saida) consumption by Fulmarus glacialis, Rissa tridactyla, Larus hyperboreus and Stercorarius parasiticus in Allen Bay 2010. https://doi.org/10.1594/PANGAEA.816019
- Matley, JK; Fisk, AT; Dick, TA (2012): (Table 3) Feeding attempts and successful captures of schooling and non-schooling Arctic cod by seabird species in Allen Bay 2010. https://doi.org/10.1594/PANGAEA.816020
- Matley, JK; Fisk, AT; Dick, TA (2012): (Table 1) Density of seabirds (Fulmarus glacialis, Rissa tridactyla, Larus hyperboreus, Sterna paradisaea, and Stercorarius parasiticus) in Allen Bay 2010. https://doi.org/10.1594/PANGAEA.816018