The role of the benthic biota in sedimentary metabolism and sediment-water exchange processes in the Goban Spur area (NE Atlantic)

Heip, C.H.R.; Duineveld, G.C.A.; Flach, Els; Graf, Gerhard; Helder, W.; Herman, Peter M. J.; Lavaleye, M.S.S.; Middelburg, Jack J.; Pfannkuche, Olaf; Soetaert, Karline; Soltwedel, Thomas; Stigter, Henko de; Thomsen, Laurenz; Vanaverbeke, Jan; Wilde, Peter

doi:10.1016/s0967-0645(01)00038-8

Cited by 91 publications

(56 citation statements)

References 43 publications

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“…This is also in agreement with the observed successive re-suspension and re-deposition of particles in sediments of the Bay of Biscay (Thomsen and van Weering, 1998). Therefore 210 Pb xs profiles registered mixing events, and are not appropriate for sedimentation rate determination, which is very low in the area (Reynaud et al, 1999;Thomsen and van Weering, 1998;Heip et al, 2001;van Weering et al, 2001). The higher water column integrated Chl-a content (Fig.…”

Section: Spatial Patternssupporting

confidence: 79%

“…The timing, amount and freshness of the OM delivered to the sediments have important consequences for the structure of benthic communities (e.g., Heip et al, 2001) and the geochemistry of the sediment (e.g., Berner, 1980). This, in turn, affects the timing and magnitude of sedimentary nutrient fluxes and oxygen (O 2 ) demand (e.g., Soetaert et al, 1996).…”

Section: Introductionmentioning

confidence: 99%

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Benthic remineralization in the northwest European continental margin (northern Bay of Biscay)

Suykens

Schmidt

Delille

et al. 2011

Continental Shelf Research

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a b s t r a c tWe report a dataset of sediment characteristics and biogeochemical fluxes at the water-sediment interface at the northwest European continental margin (northern Bay of Biscay). Cores were obtained in , May 2007 and 2008, at 18 stations on the shelf break (120-180 m), and at 2 stations on the continental slope (520 and 680 m). Water-sediment fluxes of dissolved oxygen (O 2 ), total alkalinity (TA), nitrate (NO ), which represented $ 1% of the pelagic calcification rates due to coccolithophores measured during the cruises. These CaCO 3 dissolution rates were below those reported in sediments of continental slopes and of the deep ocean, probably due to the high oversaturation with respect to CaCO 3 of the water column overlying the continental shelf sediments of the northern Bay of Biscay. Rates of total benthic organic carbon degradation were low compared to water column rates of primary production and aphotic community respiration obtained during the cruises.

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Section: Spatial Patternssupporting

confidence: 79%

Section: Introductionmentioning

confidence: 99%

Benthic remineralization in the northwest European continental margin (northern Bay of Biscay)

Suykens

Schmidt

Delille

et al. 2011

Continental Shelf Research

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“…Additional resolution was achieved by using information on feeding types to further split up the faunal compartments. As such, a resolution of 11 faunal compartments was achieved, which is high for deep-sea sediments (Heip et al 2001;Rowe et al 2008). This high compartment resolution naturally comes at a price because biomass values have to be defined for the different compartments and this is not straightforward.…”

Section: Discussionmentioning

confidence: 99%

“…The meio-and macrobenthic samples from the high-resolution temporal and spatial study of the BENthic biology and Geochemistry of a north-eastern Atlantic abyssal Locality (BENGAL) research program were only published as abundances (Galéron et al 2001), from which it is not possible to infer biomass values and therefore other data resources were used. Meiobenthos was divided into nematodes (the numerically dominant metazoan group, Galéron et al 2001) with a biomass of 0.9 mmol C m 22 (averaged from Heip et al 2001 andWitte et al 2003). The division of the nematode community by Sebastian et al (2007) in the Wieser classes (Wieser 1953) was used to partition nematode biomass among the feeding types (see above for definitions).…”

Section: Methodsmentioning

confidence: 99%

Carbon flows in the benthic food web of the Porcupine Abyssal Plain: The (un)importance of labile detritus in supporting microbial and faunal carbon demands

Oevelen

Soetaert

Heip

2012

Limnology & Oceanography

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Carbon flows in the benthic food web of the Porcupine Abyssal Plain (4850 m, northeast Atlantic) were reconstructed using linear inverse modeling based on mass balances of the various compartments, biomass data, carbon flux measurements, physiological constraints, and data from a previously published 13 C-phytodetritus pulse-chase experiment. Food web compartments consisted of bacteria, Foraminifera, three feeding types of nematodes and of macrofauna, and four feeding types of megafauna. Three lability classes of detritus were defined to clarify especially the possible role of labile detritus in this abyssal plain food web. Total detritus inputs to the food web were 0.56 mmol C m 22 d 21 , with only a minor (3.8%) contribution of labile detritus. The dominant pathway in the food web was dissolution of more refractory detritus, uptake by bacteria, and subsequent respiration (0.36 mmol C m 22 d 21 , 80% of the community respiration). Lower contributions to community respiration were found for surface-deposit-feeding macrobenthos (5.6%), Foraminifera (4.9%), predatory macrobenthos (3.8%), and other deposit-feeding macrobenthos (3.1%). Contributions by other benthic compartments were , 1%. 13 C-phytodetritus transfer data strongly constrained the carbon source for bacteria, Foraminifera, and the nematode and macrobenthic compartments. Surprisingly, labile detritus contributed , 5% of the total carbon requirements for all these compartments. Carbon sources were much less constrained for the megabenthic compartments because for these compartments no 13 C pulse-chase data were available. The carbon flow model evidently shows a limited role of labile detritus in the food web.

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“…Their calculations are based on steady-state modeling of pore water profiles of oxidants . On the other hand, Heip et al (2001) estimated the total carbon mineralization rates (open circles in Fig. 11), based on the sediment community oxygen consumption (SCOC) measurements (Duineveld et al, 1997).…”

Section: Organic Matter Depositionmentioning

confidence: 99%

The carbon cycle at the ocean margin in the northern Gulf of Biscay

Wollast

Chou

2001

Deep Sea Research Part II: Topical Studies in Oceanography

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The role of the benthic biota in sedimentary metabolism and sediment-water exchange processes in the Goban Spur area (NE Atlantic)

Cited by 91 publications

References 43 publications

Benthic remineralization in the northwest European continental margin (northern Bay of Biscay)

Benthic remineralization in the northwest European continental margin (northern Bay of Biscay)

Carbon flows in the benthic food web of the Porcupine Abyssal Plain: The (un)importance of labile detritus in supporting microbial and faunal carbon demands

The carbon cycle at the ocean margin in the northern Gulf of Biscay

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