The paper studies the validity of snowmelt calculation methods, which are mostly used in hydrology, for Larsemann Hills oasis (East Antarctica). study bases on snow surveys data obtained catchments Low Lake, Reid Lake and Stepped during 65th season Russian Antarctic Expedition (RAE) 2019-2020. Materials fond Arctic Research Institute (AARI) also used: collected catchment 57th RAE 2012 Scandrett...

Abstract The perennial ice-covered lakes of the Antarctic McMurdo Dry Valleys harbour oligotrophic microbial communities that are separated geographically from other aquatic systems. Their microbiomes include planktonic microbes as well lift-off mat emerge ice. We used ShortBRED protein family profiler to quantify antibiotic resistance genes (ARGs) metagenomes mats emerging ice and filtered wat...

Abstract The Subglacial Antarctic Lakes Scientific Access (SALSA) Project accessed Mercer Lake using environmentally clean hot-water drilling to examine interactions among ice, water, sediment, rock, microbes and carbon reservoirs within the lake water column underlying sediments. A ~0.4 m diameter borehole was melted through 1087 of ice maintained over ~10 days, allowing observation properties...

Abstract Although over 600 Antarctic subglacial lakes have been identified using radar and satellite observations, the bathymetry bed properties, which are key to understanding conditions within lake, determined in very few localities. We present measurements of water column thickness lakebed properties from Lago Subglacial CECs (SLC), located beneath 2653 m ice at Rutford-Institute-Minnesota d...

Commercial fisheries may impact marine ecosystems and affect populations of predators like seabirds. In the Southern Ocean, there is an extensive fishery for Antarctic krill Euphausia superba that is projected to increase further. Comparing distribution and prey selection of fishing operations versus predators is needed to predict fishery-related impacts on krill-dependent predators. In this co...

Waters off the western Antarctic Peninsula (i.e., the eastern Bellingshausen Sea) are unusually complex owing to the convergence of several major fronts. Determining the relative influence of fronts on occurrence patterns of top-trophic species in that area, therefore, has been challenging. In one of the few ocean-wide seabird data syntheses, in this case for the Southern Ocean, we analyzed amp...