Relationships between Benthic Activity and the Annual Phytopigment Cycle in Near-bottom Water and Sediments in the Southern North Sea

Boon, Arjen; Duineveld, G.C.A.; Berghuis, E.M.; Weele, J.A. van der

doi:10.1006/ecss.1997.0264

Cited by 85 publications

(45 citation statements)

References 33 publications

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“…Graf (1992) demonstrated that bacteria are responsible for the majority of the oxygen consumption. Investigations of the benthic reaction on phytoplankton input by Boon et al (1998) at several stations in the North Sea revealed a temporal uncoupling of macrofaunal and bacterial processes. In the present study, we observed that bacteria, macrofauna and mineralization follow different time patterns in their short-term reaction.…”

Section: Discussionmentioning

confidence: 99%

“…However, these interactions have been poorly studied. Infor-mation is available on the impact of settling phytoplankton on single benthic compartments like macrofauna (Boon et al 1998), on the bacterial response after bloom events (Stoeck & Krö ncke 2001) or on the decomposition of settling particles (Sun et al 1997). However, the in situ determination of the benthic community structure is still one of the most urgent problems.…”

Section: Introductionmentioning

confidence: 99%

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Enhanced benthic activity in sandy sublittoral sediments: Evidence from¹³C tracer experiments

Bühring

Ehrenhauss

Kamp

et al. 2006

Marine Biology Research

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In situ and on-board pulse-chase experiments were carried out on a sublittoral fine sand in the German Bight (southern North Sea) to investigate the hypothesis that sandy sediments are highly active and have fast turnover rates. To test this hypothesis, we conducted a series of experiments where we investigated the pathway of settling particulate organic carbon through the benthic food web. The diatom Ditylum brightwellii was labelled with the stable carbon isotope 13 C and injected into incubation chambers. On-board incubations lasted 12, 30 and 132 h, while the in situ experiment was incubated for 32 h. The study revealed a stepwise short-term processing of a phytoplankton bloom settling on a sandy sediment. After the 12 h incubation, the largest fraction of recovered carbon was in the bacteria (62%), but after longer incubation times (30 and 32 h in situ) the macrofauna gained more importance (15 and 48%, respectively), until after 132 h the greatest fraction was mineralized to CO 2 (44%). Our findings show the rapid impact of the benthic sand community on a settling phytoplankton bloom and the great importance of bacteria in the first steps of algal carbon processing.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Enhanced benthic activity in sandy sublittoral sediments: Evidence from¹³C tracer experiments

Bühring

Ehrenhauss

Kamp

et al. 2006

Marine Biology Research

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“…The organic fraction of the particle input to the sediment is a potential energy source for benthic organisms. It is well established that in shallow water the input of fresh organic matter of high nutritional value from primary production creates a burst of activity in the benthic population (Clarke 1988;Boon et al 1998). Graf et al (1982) showed that the response to organic matter input is more rapid in those species that utilize the organic matter directly rather than those species that feed on meiofauna and sediment.…”

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confidence: 99%

“…As a result, metabolic processes should reflect a weak seasonal pattern. However, the quality and the relative importance of the various components (algal, bacterial, and detrital) of the POM available for benthic invertebrate growth and reproduction remains unclear (Boon et al 1998). Furthermore, the time scales for the accumulation and use of energy stores in deposit feeders and the effects of environmental factors, especially food supply, are poorly known (Taghon et al 1994).…”

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confidence: 99%

The effect of the sinking spring diatom bloom on digestive processes of the cold‐water protobranch Yoldia hyperborea

Stead

Thompson

2003

Limnology & Oceanography

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Periodic sampling from April 1997 to December 1998 of a population of the deposit-feeding protobranch Yoldia hyperborea from the deep depositional zone (250 m) of Conception Bay, Newfoundland, indicated that this species was exposed to subzero temperatures (Ϫ0.63ЊC) throughout the year. However, the standing stock of phytoplankton in the photic zone showed strong seasonal fluctuations with primary peaks always occurring in April (4.26 and 5.09 g L Ϫ1 chlorophyll a in 1997 and 1998, respectively). In addition, sediment chlorophyll a started to increase (from a low of ϳ6 ng mg Ϫ1 dry weight of sediment) as the sinking of a smaller, secondary bloom, reached the bottom in the first 2 months of 1997 and 1998, although higher concentrations were reached by mid-April and May 1997 (21.32 ng mg Ϫ1 sediment) and remained relatively high until February 1998. An increase of digestive cell height and protein content occurred as soon as sinking organic material from the spring bloom reached the benthic zone, suggesting storage of metabolic energy during spring and summer. Sharp increases in digestive enzyme activity occurred primarily in early spring of each year, coinciding with the timing of the primary spring bloom fallout, suggesting activation of the formerly depressed digestive system after a prolonged period of low food availability (i.e., late summer to autumn). Results suggest that Y. hyperborea strongly depends on the input of fresh algal material despite the high availability of organic matter in the sediment.Carbon supply to the aphotic benthic zone of the sea is largely based on the timing of climatic events (e.g., snow and ice melt, rainfall), tidal exchange, and, most importantly, the sinking of phytoplankton blooms (Wassman 1991;Graf 1992). The organic fraction of the particle input to the sediment is a potential energy source for benthic organisms. It is well established that in shallow water the input of fresh organic matter of high nutritional value from primary production creates a burst of activity in the benthic population (Clarke 1988;Boon et al. 1998). Graf et al. (1982) showed that the response to organic matter input is more rapid in those species that utilize the organic matter directly rather than those species that feed on meiofauna and sediment. However, the availability of food particles decreases with increasing depth and becomes more episodic at higher latitudes, imposing specific constraints on the organisms, which must be able to withstand periods of reduced food availability. Thus energy-demanding metabolic processes such as growth and reproduction are often restricted to periods of high food abundance. For example, antarctic suspension feeders show a marked seasonal variation in feeding rates, with the highest activity occurring in the short but very productive summer, whereas most animals cease feeding during

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“…Although the North Sea is a well-studied area, previous studies on OM cycling focused either on organic matter degradation via quantification of sediment-water exchanges (Boon et al, 1998;Provoost et al, 2013), or on OM transport across and within specific sites (e.g.…”

Section: Introductionmentioning

confidence: 99%

A seasonal study of particulate organic matter composition and quality along an offshore transect in the southern North Sea

Guitton

Soetaert

Damsté

et al. 2017

Estuarine, Coastal and Shelf Science

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We investigated temporal differences in particulate organic matter (POM) composition and quality in the water column and sediment at three stations along a transect from the coast via Oyster Grounds to Dogger Bank within the southern North Sea, using a multiproxy approach covering a wide spectrum of organic matter (OM) degradation states. Results of pigments and phospholipid-derived fatty acids showed distinct OM composition and quality differences in these stations, as well as seasonal variations. Major events, such as a late fall bloom at Dogger Bank and a spring bloom at Oyster Grounds and the Coastal Station were highlighted and the semi-depositional status of Oyster Grounds was confirmed. The OM composition and quality were relatively constant in the upper 10 cm of the sediment at all stations. Finally, this study highlights the importance of lateral and vertical transport processes in seasonal 2 variations in the biogeochemical carbon cycle in this area and the intense pre-depositional processing before eventual burial in coastal settings.

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Relationships between Benthic Activity and the Annual Phytopigment Cycle in Near-bottom Water and Sediments in the Southern North Sea

Cited by 85 publications

References 33 publications

Enhanced benthic activity in sandy sublittoral sediments: Evidence from¹³C tracer experiments

Enhanced benthic activity in sandy sublittoral sediments: Evidence from¹³C tracer experiments

The effect of the sinking spring diatom bloom on digestive processes of the cold‐water protobranch Yoldia hyperborea

A seasonal study of particulate organic matter composition and quality along an offshore transect in the southern North Sea

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Relationships between Benthic Activity and the Annual Phytopigment Cycle in Near-bottom Water and Sediments in the Southern North Sea

Cited by 85 publications

References 33 publications

Enhanced benthic activity in sandy sublittoral sediments: Evidence from13C tracer experiments

Enhanced benthic activity in sandy sublittoral sediments: Evidence from13C tracer experiments

The effect of the sinking spring diatom bloom on digestive processes of the cold‐water protobranch Yoldia hyperborea

A seasonal study of particulate organic matter composition and quality along an offshore transect in the southern North Sea

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Enhanced benthic activity in sandy sublittoral sediments: Evidence from¹³C tracer experiments

Enhanced benthic activity in sandy sublittoral sediments: Evidence from¹³C tracer experiments