Effect of Bioturbation byNereissp.,Mya ArenariaandCerastodermasp. on nitrification and denitrification in estuarine sediments

Pelegrí, S. P.; Blackburn, T. H.

doi:10.1080/00785326.1995.10431509

Cited by 130 publications

(83 citation statements)

References 14 publications

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“…5A,B), indicating that worm biomass is a general predictor of many sediment diagenetic processes. This result is consistent with previous reports for other nereid species (Henriksen 1980, Pelegri & Blackburn 1995, Kristensen 2000, Nizzoli et al 2007.…”

Section: Effects Of Polychaete Biomass Versus Sizesupporting

confidence: 83%

“…As shown in previous work (Kristensen & Blackburn 1987, Pelegri & Blackburn 1995, Bartoli et al 2000, Marinelli & Williams 2003, Welsh 2003, Braeckman et al 2010, our study demonstrates that polychaete enhancement of net sediment−water fluxes is linked to total polychaete biomass. This study also supports the hypothesis that effects of macrofauna on these fluxes decline as overlying water O 2 levels decrease to hypoxic levels.…”

Section: Opportunistic Polychaetes and Ephemeral Hypoxiasupporting

confidence: 62%

“…6). While it is unlikely that nitrifier abundance grew substantially du ring these short experiments (Pelegri & Blackburn 1995, Bartoli et al 2000, it has been shown that 'dormant' nitrifiers in marine sediments tend to be rapidly revived and metabolizing when moved to new habitats with ideal growth conditions (Henriksen & Kemp 1988). In addition, experimental polychaetes may also have inadvertently inoculated their burrows with active nitrifying microbes from surface sediment.…”

Section: Biomass and N-cycling Processesmentioning

confidence: 99%

See 2 more Smart Citations

Short-term effects of nereid polychaete size and density on sediment inorganic nitrogen cycling under varying oxygen conditions

Bosch

Cornwell²,

Kemp³

2015

Mar. Ecol. Prog. Ser.

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Chronic eutrophication and expanding seasonal hypoxia (O 2 < 63 µM) in estuaries like Chesapeake Bay have altered benthic faunal communities in favor of opportunistic species that can quickly populate organic-rich sediments following hypoxic events. It has been suggested that the biogenic activity of polychaetes can stimulate microbial ammonification, nitrification, and/or denitrification in estuarine sediments as well as increase the fluxes of inorganic nitrogen (NH 4 + , NO 2 − , NO 3 − , N 2 ) across the sediment−water interface. Results of 2 laboratory experiments with the opportunistic polychaete Alitta (Neanthes) succinea were used to quantify the short-term influence of density and size of surface-feeding polychaetes on denitrification and sediment− water fluxes of inorganic nitrogen under varying oxygen conditions. This study shows that polychaete enhancements of O 2 and nitrogen fluxes were strongly correlated with total animal biomass. Fluxes of O 2 , NH 4 + and N 2 were stimulated by presence of animals for both larger and smaller worms, but per capita effects were greater for the deep-burrowing larger polychaetes. With the onset of hypoxic conditions, all density treatments had reductions in O 2 , NH 4 + and N 2 fluxes, with the high-density treatment showing the greatest change. Denitrification efficiency was 33% higher for experiments with large worms than for smaller worm treatments, suggesting that the former were more effective in removing fixed nitrogen.

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Section: Effects Of Polychaete Biomass Versus Sizesupporting

confidence: 83%

Section: Opportunistic Polychaetes and Ephemeral Hypoxiasupporting

confidence: 62%

Section: Biomass and N-cycling Processesmentioning

confidence: 99%

See 1 more Smart Citation

Short-term effects of nereid polychaete size and density on sediment inorganic nitrogen cycling under varying oxygen conditions

Bosch

Cornwell²,

Kemp³

2015

Mar. Ecol. Prog. Ser.

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“…In soft marine bottom habitats, the influence of a benthic species on organic matter mineralization usually depends on its mode of bioturbation (sediment reworking and bio-irrigation behaviour). Pelegri & Blackburn (1995) demonstrated that 3 species exhibiting different bio-irrigation activities influenced differently the N-cycle in marine sediment. Similarly, the deep bioirrigation of Arenicola marina produced a greater carbon mineralization than the shallower irrigation activity of Nereis diversicolor (Banta et al 1999).…”

Section: Abstract: Nereis Diversicolor · Corophium Volutator · Cerasmentioning

confidence: 99%

Influence of bioturbation by three benthic infaunal species on microbial communities and biogeochemical processes in marine sediment

Mermillod‐Blondin¹,

Rosenberg²,

Carcaillet³

et al. 2004

Aquat. Microb. Ecol.

239

183

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“…Net productivity in the control sediment was approximately 23% lower than the treatment sediment, and resulted from greater (approximately 81%) sediment O 2 consumption rates, rather than higher gross productivity in the treatment sediments. The presence and activities of macrofauna and their burrows significantly increase sediment O 2 demand resulting from the enhancement of oxidation reactions such as sulphide and pyrite oxidation, nitrification, and/or the increased respiration from the macrofauna population and associated microbial communities (Koike & Mukai 1983, Vetter & Hopkinson 1985, Aller 1988, Kristensen et al 1991, Paterson & Thorne 1995, Pelegri & Blackburn 1995. Macrofauna also stimulate the meiobenthic community size and structure (Dittmann 1996, Lillebo et al 1999) and meiobenthic biomass correlates positively to the presence of Trypaea australiensis burrows (Kerr 2001).…”

Section: Sediment Metabolismmentioning

confidence: 99%

Effect of natural populations of burrowing thalassinidean shrimp on sediment irrigation, benthic metabolism, nutrient fluxes and denitrification

Webb¹,

Eyre²

2004

Mar. Ecol. Prog. Ser.

144

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The aim of this study was to determine the effect of burrowing by natural populations of Trypaea australiensis on benthic metabolism, nutrient flux, denitrification and irrigation rates using in situ benthic chambers and exclusion nets to minimise disturbance and associated artefacts. The burrows of T. australiensis enhanced total sediment porewater exchange rates 5-fold compared to uninhabited sediments. Calculated single-burrow flow rates were < 0.456 l h -1, and active burrow irrigation appeared to be linked to tidal movement; as such, ex situ studies (i.e. mesocosm or laboratory incubations) may underestimate burrow irrigation rates. The presence of T. australiensis increased sediment oxygen demand by 81% as compared to unoccupied sediments. Approximately 15% of this additional consumption was used by T. australiensis for respiration, with the remaining 85% consumed within the burrows by oxidation reactions and microbial respiration. The proportion of smaller sediment particles, porosity and organic matter content was increased in the presence of T. australiensis, and sediment surface chl a concentrations were ca. 50% lower than uninhabited sediments. Net denitrification rates were 4 times greater in the presence of active T. australiensis burrows and at densities of 22 burrows m -2 were responsible for approximately 76% of total denitrification in the study site sediments. NH 4 + efflux was higher in the inhabited sediments and NO 3 -and NO 2 -effluxes were lower, suggesting that increased NH 4 + mineralisation may have enhanced denitrification via the close coupling of nitrification-denitrification in the inhabited sediments. As such, T. australiensis appears to contribute significantly to net sediment N 2 efflux in lower subtropical estuarine environments.

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Effect of Bioturbation byNereissp.,Mya ArenariaandCerastodermasp. on nitrification and denitrification in estuarine sediments

Cited by 130 publications

References 14 publications

Short-term effects of nereid polychaete size and density on sediment inorganic nitrogen cycling under varying oxygen conditions

Short-term effects of nereid polychaete size and density on sediment inorganic nitrogen cycling under varying oxygen conditions

Influence of bioturbation by three benthic infaunal species on microbial communities and biogeochemical processes in marine sediment

Effect of natural populations of burrowing thalassinidean shrimp on sediment irrigation, benthic metabolism, nutrient fluxes and denitrification

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