NDLI: Spatial variability of the primary production and chlorophyll a concentration in the drake passage in the austral spring

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Oceanology : Volume 51, Issue 1, February 2011

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Spatial variability of the primary production and chlorophyll a concentration in the drake passage in the austral spring

Content Provider	Springer Nature Link
Author	Demidov, A. B. Mosharov, S. A. Gagarin, V. I. Romava, N. D.
Copyright Year	2011
Abstract	The spatial distribution of the primary production (PP) and the chlorophyll a concentration (Chl) were investigated during two research cruises in the Drake Passage area in October–November of 2007 and 2008. The algorithm evaluating the integral PP (PP$_{int}$) for the water column in this area was developed based on the data on the surface chlorophyll (Chl$_{s}$) and the incident solar irradiance obtained in 2004–2008 in the Atlantic Sector of the Southern Ocean. The results obtained both by the experimental and model approaches suggested that the Polar Front (PF) region of the Drake Passage was characterized by low values of both the PP$_{int}$ (<100 mg C/m$^{2}$ per day) and Chl$_{s}$ (0.08–0.20 mg/m$^{3}$) in October–November. Low values of the Chl$_{s}$ and relatively high phaeophytine a concentrations indicated the winter succession state of the phytoplankton community in the Antarctic Ocean and the southern Polar Frontal Zone (PFZ). The seasonal warming of the surface water layers and the developing pycnocline resulted in a phytoplankton bloom and a Chl$_{s}$ concentration of more than 1 mg/m$^{3}$ in mid-November in this area and the Subantarctic waters.
Starting Page	281
Ending Page	294
Page Count	14
File Format	PDF
ISSN	00014370
Journal	Oceanology
Volume Number	51
Issue Number	2
e-ISSN	15318508
Language	English
Publisher	SP MAIK Nauka/Interperiodica
Publisher Date	2011-04-30
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Oceanography
Content Type	Text
Resource Type	Article
Subject	Oceanography

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