Long-Term Relationships between the Marine Environment, Krill and Salps in the Southern Ocean
Joint Authors
Lee, Chung Il
Siegel, Volker
Pakhomov, Evgeny
Atkinson, Angus
Source
Issue
Vol. 2010, Issue 2010 (31 Dec. 2011), pp.1-18, 18 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2010-12-05
Country of Publication
Egypt
No. of Pages
18
Main Subjects
Earth Science , Water and Environment
Abstract EN
Long-term variations (1975–2002) in climatology of marine environmental parameters, Antarctic krill, Euphausia superba, and the pelagic tunicate, Salpa thompsoni, were compared within the Atlantic Sector of the Southern Ocean.
Sea water temperature in the top 400 m increased at a rate of 0.020–0.030°C · yr−1, which was accompanied by the dissolved oxygen decline.
Top 100 m water layer became fresher with lower concentrations of phosphates and nitrates, while at subsurface layers (200–400 m) both salinity and nutrients showed small increasing trend.
Unlike phosphates and nitrates, silicate concentrations decreased in the entire water column.
Shorter-term water temperature dynamics closely correlated with the El Nino events expressed as the Southern Oscillation Index which in turn was linked to the propagation of the Antarctic Circumpolar Wave (ACW).
The variations of sea-ice extent matched well the changes in both air and water temperatures.
In general, abundance of krill and salps showed opposite to each other trends.
Due to large area considered in this study, no significant relationships between abiotic factors and both krill and salps were found.
However, our analysis demonstrated that krill abundance was greater in years with lower sea water temperature, greater sea-ice extent and higher nutrient concentration, while salps showed the opposite pattern.
American Psychological Association (APA)
Lee, Chung Il& Pakhomov, Evgeny& Atkinson, Angus& Siegel, Volker. 2010. Long-Term Relationships between the Marine Environment, Krill and Salps in the Southern Ocean. Journal of Marine Sciences،Vol. 2010, no. 2010, pp.1-18.
https://search.emarefa.net/detail/BIM-989343
Modern Language Association (MLA)
Lee, Chung Il…[et al.]. Long-Term Relationships between the Marine Environment, Krill and Salps in the Southern Ocean. Journal of Marine Sciences Vol. 2010, no. 2010 (2011), pp.1-18.
https://search.emarefa.net/detail/BIM-989343
American Medical Association (AMA)
Lee, Chung Il& Pakhomov, Evgeny& Atkinson, Angus& Siegel, Volker. Long-Term Relationships between the Marine Environment, Krill and Salps in the Southern Ocean. Journal of Marine Sciences. 2010. Vol. 2010, no. 2010, pp.1-18.
https://search.emarefa.net/detail/BIM-989343
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-989343