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South Polar Skua Population Census
Entry ID: K121_2011_2012_NZ_1


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Summary
Abstract: Our primary hypothesis is that South Polar skua (Stercorarius maccormicki) population abundance broadly tracks summer food availability in the southern McMurdo Sound region.

Skuas and Adélie penguins (Pygoscelis adeliae) both prey heavily on Antarctic silverfish (Plueragramma antarcticum) and krill (Euphausia crystallorophias and E. superba) and overlap in breeding space during
the summer in this region, though not entirely. If we make the assumption that physical (e.g. persistent sea-ice cover) and biological (e.g. prey abundance) conditions, in the absence of other factors, affect population dynamics and growth of both seabird species’, then similar trajectories for each population could emerge. On the other hand, in McMurdo Sound, and especially along the Victoria Land Coast, appreciable numbers of skuas nest where there are no penguins. Therefore, factors not applying to
penguins (e.g. historical human occupation) would seem to be important as well to the skuas.

Distance sampling for South polar skua (Stercorarius maccormicki) was conducted at six sites at three Adelie penguin colonies on Ross Island: Cape Bird (North, Mid and South penguin colonies), Cape Crozier (East and West penguin colonies) and Cape Royds during December 2011. Repeat counts were also conducted at Cape Bird in January 2012.

Geographic Coverage
 N: -77.22 S: -77.54  E: 169.19  W: 166.42

Temporal Coverage
Start Date: 2011-12-01


Location Keywords
CONTINENT > ANTARCTICA > CAPE RPYDS
CONTINENT > ANTARCTICA > ROSS ISLAND
CONTINENT > ANTARCTICA > CAPE CROZIER
CONTINENT > ANTARCTICA
GEOGRAPHIC REGION > POLAR


Science Keywords
BIOLOGICAL CLASSIFICATION >ANIMALS/INVERTEBRATES    [Definition]
BIOLOGICAL CLASSIFICATION >ANIMALS/VERTEBRATES >BIRDS >WADERS/GULLS/AUKS AND ALLIES


ISO Topic Category
BIOTA


Platform
FIELD INVESTIGATION    [Information]
FIELD SURVEYS    [Information]


Instrument
3DP >3-D Plasma and Energetic Particle Investigation (WIND)    [Information]


Quality
All data is stored at Landcare Research, New Zealand. Please contact the investigator for further information.


Data Set Progress
IN WORK


Data Center
Antarctica New Zealand, New Zealand Antarctic Institute, New Zealand    [Information]
Data Center URL: http://www.antarcticanz.govt.nz/

Data Center Personnel
Name: CAROLINE MACLAURIN
Phone: (03) 358 0200
Fax: (03) 358 0211
Email: c.maclaurin at antarcticanz.govt.nz
Contact Address:
Antarctica New Zealand
Private Bag 4745
City: Christchurch 8140
Country: New Zealand


Personnel
PHIL LYVER
Role: INVESTIGATOR
Phone: +64 3 321 9999
Fax: +64 3 321 9998
Email: lyverp at landcareresearch.co.nz
Contact Address:
Landcare Research
PO Box 40
City: Lincoln
Postal Code: 7640
Country: NEW ZEALAND


CAROLINE MACLAURIN
Role: DIF AUTHOR
Phone: (03) 358 0200
Fax: (03) 358 0211
Email: c.maclaurin at antarcticanz.govt.nz
Contact Address:
Antarctica New Zealand
Private Bag 4745
City: Christchurch 8140
Country: New Zealand



Creation and Review Dates
DIF Creation Date: 2012-06-24
Last DIF Revision Date: 2012-06-25


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