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L & # 39; Antarctica n & # 39; is not as isolated from the rest of the world that scientists l & # 39; thought, according to new research, with the possibility that plastic adrift create problems in the continent to & # 39; future and new species to colonize as the climate warms. The research reported aujourd & # 39; hui in Nature Climate Change by an international, multidisciplinary team of scientists including Professor Jon Waters of the Zoology Department of the & # 39; University & # 39; Otago and directed by & # 39; former PhD student Dr Ceridwen Fraser shows that kelp drifted 20,000 km reach & # 39; Antarctica – making it the & # 39; biological rafting event the longest ever recorded.
For s & # 39; get there, kelp – drifting of the Kerguelen Islands in the southern & # 39; Indian Ocean – had to pass through the barriers created by polar winds.
Samples of & # 39; DNA taken from kelp revealed that & # 39; he had derived the Kerguelen Islands and & # 39; another ecimen South Georgia. This meant that the routes to reach the & # 39; Antarctica were to have tens of thousands of kilometers.
"This study shows that the & # 39; Antarctica n & # 39; is not as isolated biologically than what & # 39; previously thought." The shores of the & # 39; Antarctica, "says Professor Waters [19659002] the research changes the way scientists think of & # 39; oceanography of & # 39; Southern ocean, where storms can play an important role in the movement of material drifting the results have important implications for science. oceanic drift which is used to keep plastics, scrap & # 39;. aircraft and other floating materials through our seas "the results suggest that & # 39; Antarctica will not be immunized against drifting plastics that are more more "This also highlights the potential for new species to colonize the & # 39; Antarctica when the climate warms."
L & # 39; s lead author, Dr. Fraser, a former doctoral student at the & # 39; University & # 39; Otago According to & # 39; Australian National University, the findings show that plants and live animals can reach the & # 39; Antarctica s & # 39; other side of the & # 39; ocean, with temperate marine species and subantarctic bombarding probably Antarctic coast all the time
because & # 39; they were isolated, but this research suggests that these differences are almost entirely due to environmental extremes, not to & # 39; isolation, "Dr. Frase the new research also shows that ecosystems of & # 39; Antarctica could be more vulnerable to global warming that & # 39; they thought, she said.
"Some parts of the & # 39; Antarctica are among the hottest places in the world. If plants and animals frequently penetrate in Antarctica floating through the & # 39; ocean, they can s & # 39; establish as soon as the & # 39; local environment will be sufficiently welcoming. "
L & # 39; s study s & # 39; based on a previous project funded by Marsden and directed by Professor Waters with Dr. Fraser basic knowledge generated by the & # 39;. Original study Marsden made this possible, new study.
