Ross Sea
Ross Sea is a deep bay of the Southern Ocean in Antarctica, between Victoria Land and Marie Byrd Land. It is a significant ecological and geological region, known for its unique wildlife and the historical expeditions that have taken place there. The sea was discovered by British explorer James Clark Ross in 1841, who named it after himself. It is one of the last seas on Earth that remains relatively unaffected by human activities, although climate change poses a significant threat to its ecosystem.
Geography[edit | edit source]
The Ross Sea is delineated from the Southern Ocean by a line connecting Cape Adare to Cape Colbeck across its entrance and is bounded to the south by the Ross Ice Shelf, the world's largest ice shelf. Covering an area of approximately 960,000 square kilometers (370,000 square miles), it includes the Ross Island, home to the active volcano Mount Erebus, and the McMurdo Station, a scientific research station of the United States.
Climate[edit | edit source]
The climate of the Ross Sea region is polar, characterized by long, cold winters and short, cool summers. Sea ice is prevalent for most of the year, reaching its maximum extent in September and its minimum in February. The presence of the ice shelf and sea ice significantly influences the local climate and ecosystem.
Ecosystem[edit | edit source]
The Ross Sea is known for its rich marine ecosystem. It supports a large number of Antarctic krill, which is a key species in the food web, serving as the primary food source for many marine animals, including whales, seals, and penguins. The sea is also home to several species of fish, such as the Antarctic toothfish, which are adapted to the cold environment. The region's biodiversity is considered crucial for scientific research on marine life and ecosystems.
Conservation[edit | edit source]
Due to its ecological importance and relatively pristine condition, the Ross Sea has been the focus of international conservation efforts. In 2016, the Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR) agreed to establish the Ross Sea Marine Protected Area (MPA), which covers 1.55 million square kilometers, making it the world's largest marine protected area at the time of its designation. The MPA aims to preserve the marine environment and facilitate scientific research, while allowing for sustainable fishing in specified zones.
Historical Expeditions[edit | edit source]
The Ross Sea has been a key site for Antarctic exploration. The British National Antarctic Expedition (1901–1904), led by Robert Falcon Scott, and the Terra Nova Expedition (1910–1913), also led by Scott, were among the early expeditions that conducted extensive scientific and exploratory work in the region. The sea has also been central to the United States Antarctic Program and other international scientific efforts in Antarctica.
Challenges[edit | edit source]
The main challenges facing the Ross Sea include climate change, which is causing warming temperatures and melting ice, and illegal, unreported, and unregulated (IUU) fishing, which threatens the sustainability of marine species. The establishment of the Ross Sea MPA is a significant step towards addressing these challenges, but ongoing international cooperation and enforcement are essential to ensure the protection of this unique marine ecosystem.
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Contributors: Prab R. Tumpati, MD