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Science and Stewardship in the Antarctic
HUMAN ACTIVITY
Although research activities—first exploratory and today more broadly focused on a range of scientific frontiers—have been the predominant human activity in Antarctica for nearly half a century, this has not always been the case. Antarctic waters supported a substantial whaling and sealing industry during the 19th and 20th centuries. Although whaling and sealing are not now done, these waters still support commercial fishing for a variety of species. Perhaps the most notable change in use of the Antarctic is the significant increase in numbers of tourists visiting the continent in recent years.
Exploration, Research, and Resources
Aside from the expeditions of the early 1900s, continuing human activity in Antarctica began in the early 1940s, with people of several nations overwintering yearly. Beltramino (1993) has compiled data on the numbers of stations and summer and overwintering personnel through 1990. Figure 2.2 shows the summer population of Antarctica beginning in 1942; it shows a sharp rise in 1946, followed by a drop until 1957 when the IGY began. Between 1946 and 1990, the number of stations operating in Antarctica grew from 6 to 40.
Since the early 1800s humans have exploited various species that inhabit the antarctic seas. Exploitation of fur seals and elephant seals began in the early 1800s and continued until 1960. Just before 1900, antarctic whaling became a very large, worldwide industry and, excepting the years of World War II, continued into the mid-1980s. Whale populations by then had dropped to extremely low numbers; under pressure from public opinion, the International Whaling Commission declared a moratorium on the commercial take of whales. Particularly in the Antarctic Peninsula region, many beaches, especially those close to whale processing facilities or anchorages used by whaling vessels, contain large whale bones as mute testimony to this past activity. In recent times, antarctic fish and krill have become more important commercially. Figure 2.3 shows trends in the take of seals, whales, fish, and krill since the beginning of the various commercial efforts.
The antarctic seas are far from untouched. Their biological resources have been harvested extensively, and several species have been substantially depleted. This harvesting is likely to continue, particularly if krill becomes an important source of protein for humans and/or other uses. The take of fish and krill is now regulated under the Convention for the Conservation of Antarctic Marine Living Resources (CCAMLR). Under CCAMLR, regulations and management actions have been developed for some fish species. However, even as the marine system is recovering from past exploitation,