OXYGEN CONSUMPTION BY THE SEABED. II. <i>IN SITU</i> MEASUREMENTS TO A DEPTH OF 180 m1

Pamatmat, Mario M.; Banse, Karl

doi:10.4319/lo.1969.14.2.0250

Cited by 82 publications

(25 citation statements)

References 14 publications

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“…Davies (1975) and Wassman (1984) demonstrated that the amount of nutritious, labile organic material supplied to the benthos, rather than temperature, enhanced sediment oxygen uptake rates in fjord ecosystems. Pamatmat & Banse (1969) found that variations in temperature could explain only 30 '10 of the total variation in sediment oxygen uptake rates in Puget Sound, Washington. They proposed that this variance was due to seasonal changes in biological activity responding to a variable organic matter supply.…”

Section: Discussionmentioning

confidence: 99%

Pelagic-benthic coupling on the shelf of the northern Bering and Chukchi Seas. Ill Benthic food supply and carbon cycling

Grebmeier¹,

McRoy²

1989

Mar. Ecol. Prog. Ser.

266

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Benthic carbon c y c h g in the northern Bering and Chukchi Seas was hypothesized to be regulated by variable primary production regimes in the overlying water: the highly productive (-250 to 300 g C m-2 yr-l) Bering Shelf-Anadyr Water (BSAW) and the less productive (-50 g C m-2 yr-l) Alaska Coastal Water (ACW). Sediment oxygen uptake was correlated with water column parameters and surface sediment C/N ratios characteristic of each water type. Total sediment oxygen uptake rates decreased from a mean 19.2 mm01 O2 m-2 d-' in BSAW to a mean 8.7 mm01 O2 m-' d-' in ACW. Mean benthic aerobic respiration rates significantly varied interannually in BSAW, although they were consistently 2 to 3 times greater in BSAW than in ACW within any one year, indicating that interannual variability in water column primary production may have a direct influence on the availability of organic carbon to the benthos. The explanation for higher respiration rates in the benthos beneath BSAW negates an expected reduction due to colder temperatures. A reduction in organic matter to the benthos in ACW apparently limits benthic metabolism even at higher temperatures. Macrofaunal respiration and bioturbation in high benthic biomass regions were important components in benthic carbon cycling.

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Section: Discussionmentioning

confidence: 99%

Pelagic-benthic coupling on the shelf of the northern Bering and Chukchi Seas. Ill Benthic food supply and carbon cycling

Grebmeier¹,

McRoy²

1989

Mar. Ecol. Prog. Ser.

266

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“…Extending the use of this type of chamber to depths beyond the range of scuba divers has been possible either by using a wire, a mooting, or a submersible (e.g. PAMATMAT and bENTON, 1968;PAMATMAT and BANSE, 1969;SMITH and TEAL, 1973;ALLER, HALL and RUDE, 1987).…”

Section: History and Presentation Of Chamber Incubating Instrumentsmentioning

confidence: 99%

Benthic chamber and profiling landers in oceanography — A review of design, technical solutions and functioning

Tengberg¹,

Bovée²,

Hall³

et al. 1995

Progress in Oceanography

161

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-We review and evaluate the design and operation of twenty-seven known autonomous benthic chamber and profiling lander instruments. We have made a detailed comparison of the different existing lander designs and discuss the relative strengths and weaknesses of each. Every aspect of a lander deployment, from preparation and launch to recovery and sample treatment is presented and compared. It is our intention that this publication will make it easier for future lander builders to choose a design suitable for their needs and to avoid unnecessary mistakes. 254A. T~BERG et al.

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“…Within these ecosystems, benthic communities play an important role by receiving and oxidizing substantial fractions of the productivity [5,6]. The most common measure of this benthic role is the oxygen flux into the sediments [7,8]. Yet, oxygen fluxes from several dramatically different continental shelves were well fit by a single power curve regression solely against water-column depth [9], suggesting that oxygen fluxes are limited by factors other than just organic matter supply to the benthos.…”

Section: Introductionmentioning

confidence: 99%

Sedimentary Carbon Oxidation and Denitrification on the Shelf Break of the Alaskan Beaufort and Chukchi Seas

Christensen¹

2008

TOOCEAJ

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Sediment-water fluxes were measured on transects across the northern Alaskan continental margin. Dissolved oxygen fluxes approximated total carbon dioxide fluxes when fluxes were low, but oxygen underestimated the higher total carbon dioxide fluxes. This follows a diagenetic model in which aerobic sediments occur below 86 μmol total carbon dioxide m -2 h -1 and anaerobic conditions intensify with increased organic matter loading. The relationship between the fluxes of nitrogen gas and total carbon dioxide agreed with the Redfield ratio, indicating that regenerated nitrogen predominantly returned to the overlying waters as nitrogen gas. On each transect, highest fluxes were found in a 20 km wide band located seaward of the 100 m continental shelf break. The magnitude of fluxes in these richer sediments exceeded that expected from the low productivity found on the outer continental shelf, suggesting upwelling-induced higher productivity at the shelf break.

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OXYGEN CONSUMPTION BY THE SEABED. II. IN SITU MEASUREMENTS TO A DEPTH OF 180 m1

Cited by 82 publications

References 14 publications

Pelagic-benthic coupling on the shelf of the northern Bering and Chukchi Seas. Ill Benthic food supply and carbon cycling

Pelagic-benthic coupling on the shelf of the northern Bering and Chukchi Seas. Ill Benthic food supply and carbon cycling

Benthic chamber and profiling landers in oceanography — A review of design, technical solutions and functioning

Sedimentary Carbon Oxidation and Denitrification on the Shelf Break of the Alaskan Beaufort and Chukchi Seas

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