Distribution and abundance of euphausiid larvae and salps during austral summers in Prydz Bay, Antarctica |
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| Authors: | Yang Guang Li Chaolun Sun Song |
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| Institution: | [1]Key Laboratory of Marine Ecology and Environmental Sciences,Institute of Oceanology,Chinese Academy of Science,Qingdao 266071,China [2]Graduate University of the Chinese Academy of Sciences,Beijing 100049,China [3]Jiaozhou Bay Marine Ecosystem Research Station,Institute of Oceanology,Chinese Academy of Science, Qingdao 266071,China |
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| Abstract: | The distribution and abundance of euphausiid larvae and salps was studied from samples collected in 2002 and 2006 from Prydz Bay, Antarctica.Larvae of Thysanoessa macrura and Euphausia superba were mainly distributed in the north of the continental shelf. T. macrura was more abundant and had a relatively wider distribution. In 2006, with ice having retreated and higher seawater temperatures and chlorophyll a levels, E. superba and T. macrura occurred in higher abundances and at more mature developmental stages. Euphausia crystallorophias was mainly distributed in the neritic region. In 2002, with severe ice conditions in the neritic region, abundance of E. crystallorophias was consisted of metanauplius (MN) and calyptopis I (CI). Salps, mostly Salpa thompsoni, had a low abundance in Prydz Bay. In 2002, S. thompsoni was only m)-3. In 2006, S. thompsoni was found at three stations located near the contimental factors, such as the timing of ice melt, polynya formation and food concentration appear to have a marked effect on the distribution and abundance of euphausiid larvae and salps. |
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| Keywords: | Prydz Bay euphausiid larvae salp distribution |
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