scholarly journals Ecological drivers of phytoplankton bloom cycles in the Southern Ocean

2019 ◽  
Author(s):  
Lionel Arteaga ◽  
Emmanuel Boss ◽  
Michael Behrenfeld ◽  
Toby Westberry ◽  
Jorge Sarmiento
2011 ◽  
Vol 56 (6) ◽  
pp. 2391-2401 ◽  
Author(s):  
Ingrid Obernosterer ◽  
Philippe Catala ◽  
Philippe Lebaron ◽  
Nyree J. West

2001 ◽  
Vol 28 (18) ◽  
pp. 3425-3428 ◽  
Author(s):  
Peter L. Croot ◽  
Andrew R. Bowie ◽  
Russell D. Frew ◽  
Maria T. Maldonado ◽  
Julie A. Hall ◽  
...  

2017 ◽  
Vol 31 (5) ◽  
pp. 922-940 ◽  
Author(s):  
Tyler Rohr ◽  
Matthew C. Long ◽  
Maria T. Kavanaugh ◽  
Keith Lindsay ◽  
Scott C. Doney

2007 ◽  
Vol 54 (3) ◽  
pp. 363-384 ◽  
Author(s):  
Joachim Henjes ◽  
Philipp Assmy ◽  
Christine Klaas ◽  
Peter Verity ◽  
Victor Smetacek

Polar Biology ◽  
2006 ◽  
Vol 29 (12) ◽  
pp. 1039-1044 ◽  
Author(s):  
Sandra Jansen ◽  
Christine Klaas ◽  
Sören Krägefsky ◽  
Lena von Harbou ◽  
Ulrich Bathmann

2014 ◽  
Vol 11 (7) ◽  
pp. 1981-2001 ◽  
Author(s):  
I. Borrione ◽  
O. Aumont ◽  
M. C. Nielsdóttir ◽  
R. Schlitzer

Abstract. In high-nutrient low-chlorophyll waters of the western Atlantic sector of the Southern Ocean, an intense phytoplankton bloom is observed annually north of South Georgia. Multiple sources, including shallow sediments and atmospheric dust deposition, are thought to introduce iron to the region. However, the relative importance of each source is still unclear, owing in part to the scarcity of dissolved iron (dFe) measurements in the South Georgia region. In this study, we combine results from a recently published dFe data set around South Georgia with a coupled regional hydrodynamic and biogeochemical model to further investigate iron supply around the island. The biogeochemical component of the model includes an iron cycle, where sediments and dust deposition are the sources of iron to the ocean. The model captures the characteristic flow patterns around South Georgia, hence simulating a large phytoplankton bloom to the north (i.e. downstream) of the island. Modelled dFe concentrations agree well with observations (mean difference and root mean square errors of ~0.02 nM and ~0.81 nM) and form a large plume to the north of the island that extends eastwards for more than 800 km. In agreement with observations, highest dFe concentrations are located along the coast and decrease with distance from the island. Sensitivity tests indicate that most of the iron measured in the main bloom area originates from the coast and very shallow shelf-sediments (depths < 20 m). Dust deposition exerts almost no effect on surface chlorophyll a concentrations. Other sources of iron such as run-off and glacial melt are not represented explicitly in the model, however we discuss their role in the local iron budget.


2008 ◽  
Vol 70 (1-2) ◽  
pp. 150-167 ◽  
Author(s):  
M.J. Whitehouse ◽  
R.E. Korb ◽  
A. Atkinson ◽  
S.E. Thorpe ◽  
M. Gordon

2009 ◽  
Vol 54 (3) ◽  
pp. 774-784 ◽  
Author(s):  
Markus G. Weinbauer ◽  
Jesus-Maria Arrieta ◽  
Christian Griebler ◽  
Gerhard J. Herndlb

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