Interannual variations in nutrients, net community production, and biogeochemical cycles in the Ross Sea

2006 ◽  
Vol 53 (8-10) ◽  
pp. 815-833 ◽  
Author(s):  
Walker O. Smith ◽  
Amy R. Shields ◽  
Jill A. Peloquin ◽  
Giulio Catalano ◽  
Sasha Tozzi ◽  
...  
Keyword(s):  
Ross Sea ◽  
Biogeochemical Cycles ◽  
Interannual Variations ◽  
Net Community Production ◽  
Community Production

Distribution of CO2species, estimates of net community production, and air-sea CO2exchange in the Ross Sea polynya

1998 ◽  
Vol 103 (C2) ◽  
pp. 2883-2896 ◽  
Author(s):  
Nicholas R. Bates ◽  
Dennis A. Hansell ◽  
Craig A. Carlson ◽  
Louis I. Gordon
Keyword(s):  
Ross Sea ◽  
Net Community Production ◽  
Community Production

Interannual variations of net community production and air-sea CO2 flux from winter to spring in the western subarctic North Pacific

Tellus B ◽  
2003 ◽  
Vol 55 (2) ◽  
pp. 466-477 ◽  
Author(s):  
TAKASHI MIDORIKAWA ◽  
KAN OGAWA ◽  
KAZUHIRO NEMOTO ◽  
HITOMI KAMIYA ◽  
TAKAFUMI UMEDA ◽  
...  
Keyword(s):  
North Pacific ◽  
Co2 Flux ◽  
Interannual Variations ◽  
Net Community Production ◽  
Subarctic North Pacific ◽  
Western Subarctic North Pacific ◽  
Community Production

scholarly journals Net community production and carbon export during the late summer in the Ross Sea, Antarctica

2017 ◽  
Vol 31 (3) ◽  
pp. 473-491 ◽  
Author(s):  
Hans B. DeJong ◽  
Robert B. Dunbar ◽  
David A. Koweek ◽  
David A. Mucciarone ◽  
Sarah K. Bercovici ◽  
...  
Keyword(s):  
Ross Sea ◽  
Late Summer ◽  
Carbon Export ◽  
Net Community Production ◽  
Community Production

scholarly journals Interannual variations of net community production and air—sea CO2flux from winter to spring in the western subarctic North Pacific

Tellus B ◽  
2003 ◽  
Vol 55 (2) ◽  
pp. 466-477
Author(s):  
Takashi Midorikawa ◽  
Kan Ogawa ◽  
Kazuhiro Nemoto ◽  
Hitomi Kamiya ◽  
Takafumi Umeda ◽  
...  
Keyword(s):  
North Pacific ◽  
Interannual Variations ◽  
Net Community Production ◽  
Subarctic North Pacific ◽  
Western Subarctic North Pacific ◽  
Community Production

scholarly journals Vertical structure, seasonal drawdown, and net community production in the Ross Sea, Antarctica

2011 ◽  
Vol 116 (C10) ◽  
Author(s):  
Matthew C. Long ◽  
Robert B. Dunbar ◽  
Philippe D. Tortell ◽  
Walker O. Smith ◽  
David A. Mucciarone ◽  
...  
Keyword(s):  
Vertical Structure ◽  
Ross Sea ◽  
Net Community Production ◽  
Community Production

Biogeochemical regimes, net community production and carbon export in the Ross Sea, Antarctica

2000 ◽  
Vol 47 (15-16) ◽  
pp. 3369-3394 ◽  
Author(s):  
Colm Sweeney ◽  
Dennis A Hansell ◽  
Craig A Carlson ◽  
L.A Codispoti ◽  
Louis I Gordon ◽  
...  
Keyword(s):  
Ross Sea ◽  
Carbon Export ◽  
Net Community Production ◽  
Community Production

scholarly journals Benthic buffers and boosters of ocean acidification on coral reefs

2013 ◽  
Vol 10 (7) ◽  
pp. 4897-4909 ◽  
Author(s):  
K. R. N. Anthony ◽  
G. Diaz-Pulido ◽  
N. Verlinden ◽  
B. Tilbrook ◽  
A. J. Andersson
Keyword(s):  
Ocean Acidification ◽  
Benthic Communities ◽  
Time Of Day ◽  
High Flow ◽  
Net Community Production ◽  
Reef Environment ◽  
Saturation State ◽  
Low Co2 ◽  
Coral Reef Environment ◽  
Community Production

Abstract. Ocean acidification is a threat to marine ecosystems globally. In shallow-water systems, however, ocean acidification can be masked by benthic carbon fluxes, depending on community composition, seawater residence time, and the magnitude and balance of net community production (NCP) and calcification (NCC). Here, we examine how six benthic groups from a coral reef environment on Heron Reef (Great Barrier Reef, Australia) contribute to changes in the seawater aragonite saturation state (Ωa). Results of flume studies using intact reef habitats (1.2 m by 0.4 m), showed a hierarchy of responses across groups, depending on CO2 level, time of day and water flow. At low CO2 (350–450 μatm), macroalgae (Chnoospora implexa), turfs and sand elevated Ωa of the flume water by around 0.10 to 1.20 h−1 – normalised to contributions from 1 m2 of benthos to a 1 m deep water column. The rate of Ωa increase in these groups was doubled under acidification (560–700 μatm) and high flow (35 compared to 8 cm s−1). In contrast, branching corals (Acropora aspera) increased Ωa by 0.25 h−1 at ambient CO2 (350–450 μatm) during the day, but reduced Ωa under acidification and high flow. Nighttime changes in Ωa by corals were highly negative (0.6–0.8 h−1) and exacerbated by acidification. Calcifying macroalgae (Halimeda spp.) raised Ωa by day (by around 0.13 h−1), but lowered Ωa by a similar or higher amount at night. Analyses of carbon flux contributions from benthic communities with four different compositions to the reef water carbon chemistry across Heron Reef flat and lagoon indicated that the net lowering of Ωa by coral-dominated areas can to some extent be countered by long water-residence times in neighbouring areas dominated by turfs, macroalgae and carbonate sand.

scholarly journals Seasonal patterns in Arctic planktonic metabolism (Fram Strait – Svalbard region)

2013 ◽  
Vol 10 (3) ◽  
pp. 1451-1469 ◽  
Author(s):  
R. Vaquer-Sunyer ◽  
C. M. Duarte ◽  
J. Holding ◽  
A. Regaudie-de-Gioux ◽  
L. S. García-Corral ◽  
...  
Keyword(s):  
Arctic Ocean ◽  
Early Spring ◽  
The Arctic ◽  
Fram Strait ◽  
Metabolic Rates ◽  
Net Community Production ◽  
Western Sector ◽  
The Arctic Ocean ◽  
European Arctic ◽  
Community Production

Abstract. The metabolism of the Arctic Ocean is marked by extremely pronounced seasonality and spatial heterogeneity associated with light conditions, ice cover, water masses and nutrient availability. Here we report the marine planktonic metabolic rates (net community production, gross primary production and community respiration) along three different seasons of the year, for a total of eight cruises along the western sector of the European Arctic (Fram Strait – Svalbard region) in the Arctic Ocean margin: one at the end of 2006 (fall/winter), two in 2007 (early spring and summer), two in 2008 (early spring and summer), one in 2009 (late spring–early summer), one in 2010 (spring) and one in 2011 (spring). The results show that the metabolism of the western sector of the European Arctic varies throughout the year, depending mostly on the stage of bloom and water temperature. Here we report metabolic rates for the different periods, including the spring bloom, summer and the dark period, increasing considerably the empirical basis of metabolic rates in the Arctic Ocean, and especially in the European Arctic corridor. Additionally, a rough annual metabolic estimate for this area of the Arctic Ocean was calculated, resulting in a net community production of 108 g C m−2 yr−1.

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