10249 to 10260 of 13961 results
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The use of acoustics to monitor burrow-nesting white-chinned petrels Procellaria aequinoctialis at Bird Island, South Georgia
Read more of: The use of acoustics to monitor burrow-nesting white-chinned petrels Procellaria aequinoctialis at Bird Island, South GeorgiaTape recordings of two types of vocalisations were used to assess burrow occupancy by white-chinned petrels (Procellaria aequinoctialis) at South Georgia. Birds responded to the rattle call on 74% of […]
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Are bats which pollinate and disperse forest plants particularly sensitive to disturbance? A case study of the effects of Hurricane Georges on bats of Puerto Rico
Read more of: Are bats which pollinate and disperse forest plants particularly sensitive to disturbance? A case study of the effects of Hurricane Georges on bats of Puerto Rico -
Anomalous temperatures in central Scotia Sea sediments – Bottom water variation or pore water circulation in old ocean crust
Read more of: Anomalous temperatures in central Scotia Sea sediments – Bottom water variation or pore water circulation in old ocean crustWe report low temperature gradients (from 60% to 12% of geothermal), and extrapolated temperatures offset from modern bottom water temperatures, in sediments from the central Scotia Sea. We examine possible […]
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Surface phosphomonoesterase activity of a natural immobilized system: Chroococcidioposis in an Antarctic desert rock
Read more of: Surface phosphomonoesterase activity of a natural immobilized system: Chroococcidioposis in an Antarctic desert rockThe phosphomonoesterase activity of a microbialcommunity dominated by Chroococcidiopsis in arock sample from the Antarctic dry desert was comparedwith that of a non-axenic culture of thecyanobacterium isolated from the same […]
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Phosphatase activities of endolithic communities in rocks of the Antarctic Dry Valleys
Read more of: Phosphatase activities of endolithic communities in rocks of the Antarctic Dry ValleysPhosphorus is scarce in Beacon Sandstone of the McMurdo Dry Valleys, Antarctica, and any input from precipitation is minimal. In endolithic microbial communities recycling of P by the action of […]
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Widespread complex flow in the interior of the Antarctic Ice Sheet
Read more of: Widespread complex flow in the interior of the Antarctic Ice SheetIt has been suggested that as much as 90% of the discharge from the Antarctic Ice Sheet is drained through a small number of fast-moving ice streams and outlet glaciers […]
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Thermal tolerance and acclimation response of larvae of the sub-Antarctic beetle Hydromedion sparsutum (Coleoptera: Perimylopidae)
Read more of: Thermal tolerance and acclimation response of larvae of the sub-Antarctic beetle Hydromedion sparsutum (Coleoptera: Perimylopidae)Hydromedion sparsutum is a locally abundant herbivorous beetle on the sub-Antarctic island of South Georgia, often living in close association with the tussock grass Parodiochloa flabellata. Over a 4-day period […]
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A magnetotelluric model of the Mana Pools basin, northern Zimbabwe
Read more of: A magnetotelluric model of the Mana Pools basin, northern ZimbabweThe Mana Pools sedimentary basin lies within the Zambezi mobile belt in northern Zimbabwe. New and preexisting magnetotelluric data and the available seismic reflection data are used to constrain the […]
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Tropical daytime lower D-region dependence on sunspot number
Read more of: Tropical daytime lower D-region dependence on sunspot numberObserved phases and amplitudes of VLF radio signals propagating on (near) tropical all-sea paths, both short, ∼300 km, and long, ∼10 Mm, are used to find daytime parameter changes for […]
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Ammonium excretion by Antarctic krill Euphausia superba at South Georgia
Read more of: Ammonium excretion by Antarctic krill Euphausia superba at South GeorgiaExcretion by Antarctic krill Euphausia superba (hereafter ‘‘krill’’) is measured typically in small containers of filtered seawater for 12–24 h, which may cause a reduction of swimming, feeding, and metabolism. […]