8041 to 8052 of 13980 results
-
-
-
Kelp degradation by Paractora trichosterna (Thomson) (Diptera: Helcomyzidae) at sub-Antarctic South Georgia
Read more of: Kelp degradation by Paractora trichosterna (Thomson) (Diptera: Helcomyzidae) at sub-Antarctic South GeorgiaThe Diptera are one of the dominant insect consumer groups on sub-Antarctic islands and are thought to contribute significantly to terrestrial ecological processes at many of these islands. The life-cycle […]
-
-
Origin and composition of settling iron aggregates in oligotrophic Sombre Lake, Signy Island, Antarctica
Read more of: Origin and composition of settling iron aggregates in oligotrophic Sombre Lake, Signy Island, AntarcticaSediment traps were deployed in an oligotrophic, seasonally anoxic maritime Antarctic lake for 15 months. Immediately after the onset of the inflow in spring many iron oxyhydroxide aggregates were collected […]
-
Taxonomy and palaeoecology of Early Cretaceous (Late Albian) angiosperm leaves from Alexander Island, Antarctica
Read more of: Taxonomy and palaeoecology of Early Cretaceous (Late Albian) angiosperm leaves from Alexander Island, AntarcticaSeven species of angiospermous leaves from the mid to Late Albian of Alexander Island, Antarctica provide further evidence of angiosperm radiation into high southern palaeolatitudes. The leaves have both palmate […]
-
Fern thickets from the Cretaceous of Alexander Island, Antarctica containing Alamatus bifarius Douglas and Aculea acicularis sp. nov
Read more of: Fern thickets from the Cretaceous of Alexander Island, Antarctica containing Alamatus bifarius Douglas and Aculea acicularis sp. novWithin the Albian Fossil Bluff Group of Alexander Island, Antarctica, sheet flood deposits have preserved palaeosols within situfernsAlamatus bifariusDouglas andAculea acicularissp. nov. Reconstructed as upright ferns, with fronds arising from […]
-
Moult in relation to some aspects of reproduction and growth in swarms of Antarctic krill,Euphausia superba
Read more of: Moult in relation to some aspects of reproduction and growth in swarms of Antarctic krill,Euphausia superbaIn a 14-d period 38 swarms of Antarctic krill,Euphausia superba Dana, were sampled in an area 55.5 x 55.5 km to the southwest of Elephant Island, at the north of […]
-
-
In situ photosynthesis and estimated annual production of the red macroalga Myriogramme mangini in relation to underwater irradiance at Signy Island (Antarctica)
Read more of: In situ photosynthesis and estimated annual production of the red macroalga Myriogramme mangini in relation to underwater irradiance at Signy Island (Antarctica)For the first time, photosynthesis of Myriogramme mangini (Gain) Skottsberg, one of the dominant red macroalgae in the sublittoral of Signy Island (South Orkney Islands), was studied in situ under […]
-
A downward developing mesoscale cyclone over the Ross Ice Shelf during Winter
Read more of: A downward developing mesoscale cyclone over the Ross Ice Shelf during WinterA case of midtropospheric mesoscale cyclone formation and downward development adjacent to and over the Ross Ice Shelf, Antarctica during May 1988 is presented. This event involved atmospheric phenomena over […]
-
Acoustic targets at South Georgia and the South Orkney Islands during a season of krill scarcity
Read more of: Acoustic targets at South Georgia and the South Orkney Islands during a season of krill scarcityDual frequency (38 and 120 kHz) acoustic surveys of shelf-break regions in the vicinity of the Willis Islands, South Georgia, and Coronation Island, South Orkneys, both in the Atlantic sector […]