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- Biological oceanography (3)
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Articles 1 - 4 of 4
Full-Text Articles in Entire DC Network
Forestry Research: A Provisional Global Inventory, Francois Mergen, M. A. Judd, J. Putnam
Forestry Research: A Provisional Global Inventory, Francois Mergen, M. A. Judd, J. Putnam
Discussion Papers
No abstract provided.
On The Upwelling Circulation Over The Wide Shelf Off Peru: 2. Vertical Velocities, Internal Mixing And Heat Balance, Gary Shaffer
On The Upwelling Circulation Over The Wide Shelf Off Peru: 2. Vertical Velocities, Internal Mixing And Heat Balance, Gary Shaffer
Journal of Marine Research
An analysis is presented of the mean coastal upwelling circulation over the wide shelf off Peru based on the current and temperature profiling measurements described in Shaffer (1982). The natural coordinate conservation method (NCCM) in temperature (T) space is applied to boxes formed from stations along two lines with 60 km alongshore separation. Mean distributions in x (cross-shelf coordinate) and T are obtained for diapycnal advection and mixing. The vertical component of isopycnal flow is also calculated and found to be considerably less than vertical, diapycnal flow in this region of strong upwelling and internal mixing.Richardson numbers ( …
Seasonal Lags Between Organic Carbon Deposition And Mineralization In Marine Sediments, David T. Rudnick, Candace A. Oviatt
Seasonal Lags Between Organic Carbon Deposition And Mineralization In Marine Sediments, David T. Rudnick, Candace A. Oviatt
Journal of Marine Research
The fate of phytoplankton detritus in the muddy sediments of shallow marine ecosystems was studied by labelling the water column of a 13 m3 microcosm with radiocarbon bicarbonate from January to July. By the end of the study, more than 9% of the original inorganic label was found as organic carbon in the top 10 cm of sediment. The accumulation of labelled organic carbon in the sediment totalled 14.5 gC/m2. We estimate that this amount represented 15% of daytime net primary production and roughly half of the labelled organic carbon that was deposited on the sediment. The …
The Effects Of The Filter-Feeding Clam Mercenaria Mercenaria On Carbon Cycling In Experimental Marine Mesocosms, Peter H. Doering, Candace A. Oviatt, John R. Kelly
The Effects Of The Filter-Feeding Clam Mercenaria Mercenaria On Carbon Cycling In Experimental Marine Mesocosms, Peter H. Doering, Candace A. Oviatt, John R. Kelly
Journal of Marine Research
The metabolism and the fate of 14C labelled carbon was examined in 4 outdoor mesocosm (13 m3) tanks containing both benthic and pelagic compartments. Mesocosms with (16/m2) and without the clam, Mercenaria mercenaria were compared. System production, net and gross sedimentation of particulate carbon and benthic remineralization of dissolved inorganic nitrogen were all greater in mesocosms with clams. A filtration rate model, dependent on clam size and temperature, explained between 74–114% of the increased gross sedimentation in clam tanks relative to controls.The higher production in the clam tanks was at least in part due to …