Publications

11653 to 11664 of 14084 results

1. Seasonal sexual segregation in two Thalassarche albatross species: competitive exclusion, reproductive role specialization or trophic niche divergence?

   Sexual segregation by micro- or macrohabitat is common in birds, and usually attributed to size-mediated dominance and exclusion of females by larger males, trophic niche divergence or reproductive role specialization. […]

   Read more of: Seasonal sexual segregation in two Thalassarche albatross species: competitive exclusion, reproductive role specialization or trophic niche divergence?

2. Accuracy of geolocation estimates for flying seabirds

   Geolocation (Global Location Sensing or GLS logging) using archival light-recording tags offers considerable potential for tracking animal movements, yet few studies of flying seabirds have exploited this technology. Our study […]

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3. Diet and long-term changes in population size and productivity of brown skuas Catharacta antarctica lonnbergi at Bird Island, South Georgia

   Breeding ecology of brown skuas (Catharacta antarctica lonnbergi) was studied at Bird Island, South Georgia in the austral summers of 2000/2001-2003/2004. A complete census recorded 467 breeding pairs in 3.55 […]

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4. A white-capped albatross, Thalassarche [cauta] steadi, at South Georgia: first confirmed record in the south-western Atlantic

   Although albatrosses typically show strong natal philopatry, a small proportion of birds emigrate to distant colonies, occasionally establishing new breeding sites and potentially initiating speciation events. Patterns of albatross distribution […]

   Read more of: A white-capped albatross, Thalassarche [cauta] steadi, at South Georgia: first confirmed record in the south-western Atlantic

5. Movements and burrowing activity in the Antarctic bivalve molluscs Laternula elliptica and Yoldia eightsi

   Burrowing was investigated in two Antarctic infaunal bivalve molluscs, Laternula elliptica and Yoldia eightsi, representing amongst the least and most active members of the class Bivalvia in the Southern Ocean. […]

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6. Metabolic flexibility: the key to long-term evolutionary success in Bryozoa?

   Oxygen consumption (MO2) and activity were evaluated in Antarctic Bryozoa. Three species representing two different morphologies, flat sheet, laminar forms, Isoseculiflustra tenuis and Kymella polaris, and the bush form Camptoplites […]

   Read more of: Metabolic flexibility: the key to long-term evolutionary success in Bryozoa?

7. Swimming beneath solid seas. [Review of] Under Antarctic ice: the photographs of Norbert Wu, by N. Wu and J. Mastro, University of California Press, 2004 [and] Frozen oceans, by D. Thomas, Natural History Museum Publishing, 2004

   Read more of: Swimming beneath solid seas. [Review of] Under Antarctic ice: the photographs of Norbert Wu, by N. Wu and J. Mastro, University of California Press, 2004 [and] Frozen oceans, by D. Thomas, Natural History Museum Publishing, 2004

8. Physiological flexibility: the key to success and survival for Antarctic fairy shrimps in highly fluctuating extreme environments

   1. The anostracan fairy shrimp Branchinecta gaini inhabits one of the most hostile environments on earth, living in pools and lakes in Antarctica. Between January 2002 and January 2003 temperatures […]

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9. The UV environment of the Beagle 2 landing site: detailed investigations and detection of atmospheric state

   December 25th 2003 will see the Beagle 2 lander arrive at the surface of Mars in the Isidis region, allowing for the first time in situ measurements of ultraviolet (UV) […]

   Read more of: The UV environment of the Beagle 2 landing site: detailed investigations and detection of atmospheric state

10. Magnetic local time, substorm, and particle precipitation-related variations in the behaviour of SuperDARN Doppler spectral widths

    Super Dual Auroral Radar Network (DARN) radars often detect a distinct transition in line-of-sight Doppler velocity spread, or spectral width, from 200 m s(-1) at higher latitude. They also detect […]

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11. Additions and corrections to the lichens of Antarctica and South Georgia

    The taxonomic listing given in Lichens of Antarctica and South Georgia (Øvstedal & Lewis Smith 2001) has been updated. 17 additional taxa of lichenised fungi are described, including several nomenclatural […]

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12. A ‘low-level’ explanation for the recent large warming event trend over the western Antarctic Peninsula involving blocked winds and changes in zonal circulation

    [1] We demonstrate a mechanism whereby the impact of stronger circumpolar westerly winds on the mountains of the Antarctic Peninsula contributes significantly to the enhanced warming trend observed over its […]

    Read more of: A ‘low-level’ explanation for the recent large warming event trend over the western Antarctic Peninsula involving blocked winds and changes in zonal circulation