13693 to 13704 of 14080 results
Elevated ultraviolet irradiance (UVR, 280–400 nm) damages DNA and induces reorganisation within biological communities at the Earth’s surface. Southern high latitude aquatic ecosystems may be particularly susceptible because of low […]
Novel observations collected from video, acoustic and conductivity sensors showed that Antarctic fur seals consistently exhale during the last 50–85% of ascent from all dives (10–160 m, n>8000 dives from […]
Electron acceleration inside the Earth’s magnetosphere is required to explain increases in the ∼MeV radiation belt electron flux during magnetically disturbed periods. Recent studies show that electron acceleration by whistler […]
The Van Allen radiation belts are two regions encircling the Earth in which energetic charged particles are trapped inside the Earth’s magnetic field. Their properties vary according to solar activity […]
Fossil soils are present within mid-Cretaceous fluvial sediments of the Fossil Bluff Group, Alexander Island, Antarctica. The palaeosols contain in situ fossil trees and rooted plants. These palaeosols are typically […]
Variation in gonadal somatic indices (GSI) and fatty acid signatures of 2 contrasting Scottish west coast populations of the echinoid Psammechinus miliaris were examined. P. miliaris was sampled from both […]
The majority of coastal Antarctic research stations discard untreated sewage waste into the near-shore marine environment. However, Antarctic solar conditions are unique, with ozone depletion increasing the proportion of potentially […]
The populations of two non-native Dipterans have been established at two Antarctic research stations since at least 1998. Both belong to Sciaridae (“black fungus midge”), and have been determined to […]
New U–Pb zircon ion-microprobe ages from the alluvial conglomerates and flood plain sediments of the Botany Bay Group demonstrate that sedimentation occurred at c. 167 Ma, coeval with rift-related silicic […]
We investigated the possible effects of a 12-g data-logger attached to a darvic ring on the performance of Coryrsquos shearwater (Calonectris diomedea, 600–850 g) from two different colonies in the […]
Svalbard ice cores have not yet been fully exploited for studies of climate and environmental conditions. In one recently drilled ice core from Lomonosovfonna, we have studied the methanesulfonic acid […]
Climatological change in the tides in the lower thermosphere has been estimated at five different latitudes using wavelet analysis of geomagnetic data series extending back to the beginning of the […]