Benthic macrofauna in a shallow water carbonate sediment: major bioturbators at the Dry Tortugas

D’Andrea, Anthony F.

doi:10.1007/s003670050038

Cited by 19 publications

(8 citation statements)

References 20 publications

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“…Capitellid polychaetes, which are subsurface deposit feeders, were observed in the upper sediment layer of 2-5 cm as well as at greater sediment depths (25-30 cm) (Hayashi 1988;D'Andrea and Lopez 1997). The values of organic carbon, protein and carbohydrate in the present study decreased with increasing sediment depth (figure 7), but the carbohydrate did not show much variation.…”

Section: Vertical Distribution Of Macrobenthoscontrasting

confidence: 51%

Composition of macrobenthos from the Central Indian Ocean Basin

et al. 2009

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The deep sea is well known for its high faunal diversity. But the current interest in its abundant polymetallic nodules, poses a threat to the little known benthic organisms surviving in this unique environment. The present study is the first attempt to document the Indian Ocean abyssal benthic diversity of macroinvertebrates and to investigate its relation to the surface primary production (chl-a), sediment labile organic matter, organic carbon and texture. The present study is based on 87 individuals. Altogether 39 macroinvertebrate genera were obtained from water depths of 4500-5500 m from 23 box cores. Reduction in macrobenthic density was seen towards the southern latitudes. The area was dominated by deposit feeding macrobenthos. Vertically, the fauna was distributed down to 30 cm depth, with the highest faunal density in the top 2-5 cm sediment section. The values for population density were strongly correlated with surface water chl-a and sediment protein, indicating supply of fresh organic matter as a critical factor for maintaining the deep sea benthic diversity and abundance.

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Section: Vertical Distribution Of Macrobenthoscontrasting

confidence: 51%

Composition of macrobenthos from the Central Indian Ocean Basin

et al. 2009

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“…Dissolved oxygen penetration into the sediment away from irrigated burrow structures is 2 to 3 mm (Furukawa et al, 2000). Benthic algae are common to the area, but bioturbation and frequent storms result in destabilization of algal mats (D'Andrea and Lopez, 1997). Salinity was 36.3 ppt and water temperature 28°C during sampling.…”

Section: Study Site and Samplingmentioning

confidence: 99%

“…1) is intense, and biogenic sedimentary fabrics dominate over those deposited by storm activity (Bentley and Nittrouer, 1997). Biologic mixing is primarily carried out by molluscs, polychaetes (0 -4 cm), carnivores (upper 10 cm), and burrowing Callianassa shrimp (Ն30 cm) (D'Andrea and Lopez, 1997). Total organic carbon content is low (0.4 -0.7 wt.%) compared to other coastal sediments (Furukawa et al, 2000).…”

Section: Study Site and Samplingmentioning

confidence: 99%

Organic matter diagenesis in shallow water carbonate sediments

Ingalls

Aller

Lee

et al. 2004

Geochimica et Cosmochimica Acta

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“…Burrow geometries are complex even in laboratory systems populated by single species of burrowing organisms [ Figure 2]. The defining variables for individual burrow geometry such as the radius, vertical extent of the burrows, and tilt angle, as well as the variables describing the assemblage such as the burrow opening density and distribution, take even wider ranges of values in natural sediments populated by multiple species [D'Andrea and Lopez, 1997].…”

Section: Laterally Heterogeneous Solute Transport Geometry Due To Burmentioning

confidence: 99%

Biogeochemical consequences of infaunal activities

Furukawa¹

2005

Coastal and Estuarine Studies

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The public reporting burden for this collection of Information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing the burden, Activities of sedimentary infauna have significant consequences on overall sedimentary diagenesis. Infauna directly participate in sedimentary processes by organic matter metabolization coupled to aerobic respiration and metabolite excretion. In addition, they indirectly influence the diagenetic pathways by changing the transport regimes of dissolved and particulate species as well as by modifying microbial habitats. The couplings between infaunal activities and their biogeochemical consequences have been studied in recent years, but many of the results and conclusions remain site-and species-specific due to the diverse and highly interrelated ways in which sedimentary infauna interact with the transport. reaction, and microbial regimes. A generalized understanding of infauna-influenced sedimentary systems will require (It a systematic classification of the infauna-sediment interaction mechanisms Activities of sedimentary infauna have significant consequences on overall sedimentary diagenesis. Infauna directly participate in sedimentary processes by organic matter metabolization coupled to aerobic respiration and metabolite excretion. In addition, they indirectly influence the diagenetic pathways by changing the transport regimes of dissolved and particulate species as well as by modifying microbial habitats. The couplings between infaunal activities and their biogeochemical consequences have been studied in recent years, but many of the results and conclusions remain site-and species-specific due to the diverse and highly interrelated ways in which sedimentary infauna interact with the transport, reaction, and microbial regimes. A generalized understanding of infauna-influenced sedimentary systems will require (1) a systematic classification of the infauna-sediment interaction mechanisms and (2) a comprehensive model framework that incorporates all known effects of infauna-sediment interactions associated with transport, reaction, and microbial regimes.

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Benthic macrofauna in a shallow water carbonate sediment: major bioturbators at the Dry Tortugas

Cited by 19 publications

References 20 publications

Composition of macrobenthos from the Central Indian Ocean Basin

Composition of macrobenthos from the Central Indian Ocean Basin

Organic matter diagenesis in shallow water carbonate sediments

Biogeochemical consequences of infaunal activities

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