King George Island, largest of the South Shetland Islands, is the site of nine scientific stations of different nationalities operating within the Antarctic Treaty System. Following a recent visit by the author to assess environmental and management issues, this article (the first of two) updates the status of developments on the island and outlines problems, real and potential.which have arisen from scientific activities, tourism, vehicles, use of fuels and waste disposal. It is concluded that existing management practices have not been adequate to deal with these problems and new approaches are required.

Climate models predict a substantial warming at high latitudes following the enhanced greenhouse effect caused by anthropogenic emissions of carbon dioxide (CO2), methane (CH4), and various other trace gases. Arctic and sub-Arctic soils contain large amounts of organic carbon that could be made increasingly available for decomposition in a wanner climate due to deepening of the biologically-active layer and increased thermokarst erosion. This produces the potential for increased emissions of CO2 and CH4 from tundra areas and thus positive (enhancing) feedback effects on the greenhouse effect. From being a net absorber of CO2 the global tundra areas could become a net source of up to 1.25 Gt C yr1 as a result of the predicted warmer and dryer conditions during the thaw period. CH4 is at least 21 times more effective as a greenhouse gas than CO2. How the CH4 balance in the tundra will respond to climate change is therefore very important but also much less certain. Estimates of total present CH4 emissions from northern wetlands vary greatly, ranging from 2.4 to 106 Tg CH4 yr1 and little is known about the mechanisms controlling the flux. There are indications, however, that if the tundra becomes wetter under warming, CH4 emissions would probably increase. If it becomes dryer, the emissions could cease or even turn the tundra into a sink for atmospheric CH4, partly due to increasing microbial consumption of CH4 in the soil. There is an urgent need for more research into the processes controlling the CH4 flux in Arctic and sub-Arctic soils.

The Xlth Antarctic Treaty Special Consultative Meeting in Viña del Mar, Chile (19 November to 6 December 1990) aired the Antarctic Treaty Consultative Parties' views on conservation, following the collapse of support for the minerals convention. Almost simultaneously at the United Nations Assembly in New York, the eighth successive annual discussion on Antarctica included the usual critique of the Treaty System's political and legal framework. The conservationist emphasis apparent in 1989 continued in 1990, accompanied by an attack on Antarctic science. Particular emphasis was placed on adverse environmental impacts from the crowding together of scientific stations. Treaty parties countered with their long-standing opposition to UN interference in Treaty matters. Resolutions on Antarctica sought to exclude South Africa from ATS activities and to consider the establishment of a UN international research station. The 1990 discussions showed that the Treaty System at its 30th anniversary fails to enjoy universal support, and contributed to an emerging debate on the merits of Antarctic science.

Seal hunting remains of vital importance to Inuit culture, but the value of seal meat extends beyond nutritional and dietary requirements. This article focuses on the contemporary ideology of subsistence in a Greenlandic scaling community, with particular reference to the sharing of seal meat. Seal hunting is not cash-oriented and therefore seal meat is not regarded as a commodity. When it is shared or given away as a gift it expresses the relationships people share with each other. Sharing cements bonds of kinship and close social association and remains a distinctive statement of community.

In Tempelfjorden and Sassenfjorden, Svalbard, 12 March to4 April 1990, a Siberian husky dog was used to detect ringed seal breathing holes in the ice, using random stratified sampling to sample 20% (40 km2) of the total area. The area was estimated to contain 997 ringed seal breathing holes, corresponding to 293 ringed seals. A maximum of 185 pups were born in the area. A breeding condition factor was constructed to enable comparisons of yearly and areal variation in ice cover and precipitation within ringed seal breeding habitats.

The Commission for the Conservation of Antarctic MarineLiving Resources has met annually since 1982, with the task of implementing the Convention on the Conservation of Antarctic Marine Living Resources; the treaty which was designed to manage rationally the exploitation of resources in the Southern Ocean. The central resource of the region is Antarctic krill (Euphausia superba Dana) and despite nine years of meetings the Commission has yet to adopt any conservation measures to protect krill. This article examines the published work of the Commission, seeking to determine how the Commission has dealt with the krill fishery and why it has not yet developed a krill management plan.

Like many of his contemporaries, the popular novelist Jules Verne (1828–1905) was deeply influenced by the geographical explorations of the mid 19th century. Of more than 60 novels published from 1855 onward in his series Les voyages extraordinaires, which involved tales of adventure, travel, geographical discovery or scientific or technological innovation, 11 included scenes or themes of polar travel. Verne clearly relied for his material and inspiration on current or recently-published polar expedition narratives of the Victorian era.

Levels of some chlorinated hydrocarbon residues (HCB, HCH isomers, p,p'-DDT and related compounds, PBC congeners) in lichen and moss from Kay Island, Ross Sea, Antarctica, are reported and compared with data from similar species collected on Antarctic Peninsula. The role of the cold remote areas in the global circulation of these contaminants is briefly discussed.

Fur seals were exterminated from Macquarie Island about 20 years after discovery of the island in 1810. Their specific identity is unknown. Few fur seals were reported at the island until it was occupied by the Australian National Antarctic Research Expeditions in 1948. Fur seal numbers are now increasing. An archaeological excavation at a sealers' quarters at Sandy Bay in 1988 revealed the fragmented skull of a young Antarctic fur seal Arctocephalus gazella 1.1 m below the surface in a layer dated in the 1870s and 1880s. This period coincides with the recovery of fur seal populations in the South Atlantic Ocean following earlier harvesting. Elsewhere it has been argued that the Antarctic fur seal is unlikely to have been the original fur seal at Macquarie Island because few individuals of that species are ashore in winter, which is the season when the island was discovered and fur-seal harvesting began. It is concluded that the Sandy Bay skull is from a vagrant animal.

Seasonal ice of the Southern Ocean, occupying some 15 x 106 km2, supports a distinctive biota based on algae that live on, within and immediately beneath the ice floes. How this annually-forming habitat recruits its biota, and the fate of the biota after the ice thaws in late summer, are little-known. Studies in the Weddell Sea in 1984–88 have shown that the seasonal ice is important as the wintering substrate of krill Euphausia superba which, together with other zooplankton and fish, supports a large breeding population of seals and penguins. Clearly a key habitat in the economy of the Southern Ocean, this seasonal ice is likely to be vulnerable to small climatic changes.