11593 to 11604 of 14026 results
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Direct determination of mercury at the sub-picogram per gram level in polar snow and ice by ICP-SFMS
Read more of: Direct determination of mercury at the sub-picogram per gram level in polar snow and ice by ICP-SFMSAn analytical method for the direct determination of mercury (Hg) in polar snow and ice cores and surface snow based on inductively coupled plasma sector field mass spectrometry (ICP-SFMS) has […]
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Seasonal sexual segregation in two Thalassarche albatross species: competitive exclusion, reproductive role specialization or trophic niche divergence?
Read more of: 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. […]
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Accuracy of geolocation estimates for flying seabirds
Read more of: Accuracy of geolocation estimates for flying seabirdsGeolocation (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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Diet and long-term changes in population size and productivity of brown skuas Catharacta antarctica lonnbergi at Bird Island, South Georgia
Read more of: Diet and long-term changes in population size and productivity of brown skuas Catharacta antarctica lonnbergi at Bird Island, South GeorgiaBreeding 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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A white-capped albatross, Thalassarche [cauta] steadi, at South Georgia: first confirmed record in the south-western Atlantic
Read more of: A white-capped albatross, Thalassarche [cauta] steadi, at South Georgia: first confirmed record in the south-western AtlanticAlthough 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 […]
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Movements and burrowing activity in the Antarctic bivalve molluscs Laternula elliptica and Yoldia eightsi
Read more of: Movements and burrowing activity in the Antarctic bivalve molluscs Laternula elliptica and Yoldia eightsiBurrowing 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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Metabolic flexibility: the key to long-term evolutionary success in Bryozoa?
Read more of: 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 […]
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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 -
Physiological flexibility: the key to success and survival for Antarctic fairy shrimps in highly fluctuating extreme environments
Read more of: Physiological flexibility: the key to success and survival for Antarctic fairy shrimps in highly fluctuating extreme environments1. 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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The UV environment of the Beagle 2 landing site: detailed investigations and detection of atmospheric state
Read more of: The UV environment of the Beagle 2 landing site: detailed investigations and detection of atmospheric stateDecember 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) […]
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Magnetic local time, substorm, and particle precipitation-related variations in the behaviour of SuperDARN Doppler spectral widths
Read more of: Magnetic local time, substorm, and particle precipitation-related variations in the behaviour of SuperDARN Doppler spectral widthsSuper 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 […]