3973 to 3984 of 13906 results
Electrical d.c. resistivity measurements made on the George VI Ice Shelf have established the polar nature of Antarctic ice despite saturation by melt-water from surface melt-lakes. Previously it has been […]
Rapid changes in ocean circulation and climate have been observed in marine-sediment and ice cores over the last glacial period and deglaciation, highlighting the non-linear character of the climate system […]
The food and feeding ecology of Black‐browed Albatrosses and Grey‐headed Albatrosses was studied from 1975 to 1978 at Bird Island, South Georgia. Two hundred and seventy food samples (averaging 75–85 […]
Brown rats were introduced to the sub‐antarctic island of South Georgia probably around 1800. They are now widespread and abundant, particularly on the north coast. The population is divided into […]
The diet of two small burrow dwelling petrels, Dove prion, Pachyptila desolata and Blue petrel Halobaena caerulea, was studied at the subantarctic island of South Georgia by quantitative analysis of […]
(1) The vegetation of three oligotrophic lakes on Signy Island (Antarctica) is dominated by benthic algal felts and aquatic mosses, and the phytoplankton is sparse. Five seasonal factors affect underwater […]
1) Laboratory experiments were carried out on the photosynthetic physiology of two algal communities and two species of aquatic moss from lakes on Signy Island (Antarctica). (2) Net rate of […]
Antarctic lakes present a wide variety of physical, chemical and biological conditions, and are not always the simplified systems imagined by earlier workers. The volume of data on lakes of […]
The majority of Antarctic benthic invertebrates so far studied do not produce pelagic larvae, but develop non-pelagically by means of egg capsules, brooding or viviparity. The predominance of protected development […]