Impact of the invasive polychaete Marenzelleria viridis on the biogeochemistry of sandy marine sediments

Quintana, Cintia Organo; Kristensen, Erik; Valdemarsen, Thomas Bruun

doi:10.1007/s10533-012-9820-2

Cited by 43 publications

(39 citation statements)

References 40 publications

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“…White bacterial mats have been observed at Mv burrow openings in several studies , Quintana et al 2013, Renz & Forster 2014, and white patches appeared on the surface of some of our incubations (Fig. 4).…”

Section: Chemoautotrophy Ratessupporting

confidence: 70%

“…In contrast, the burrow of Marenzelleria viridis and subsurface sediments showed increased concentrations of ai15:0 and i15:0, which are compounds that indicate a high proportion of anaerobic metabolism (Findlay et al 1990, Bühring et al 2005. The enhancement of anaerobic activity in burrow sediments of M. viridis rather than N. diversicolor is consistent with the known impact of M. viridis bioturbation on sediment geochemistry, which boosts anaerobic processes such as sulfate reduction , Quintana et al 2013.…”

Section: Bacterial Communitysupporting

confidence: 63%

“…sulfate reduction and sulfur disproportionation) in subsurface sediment. Concomitantly, the upward pumping of sulfidic and nutrientrich pore water by M. viridis may potentially promote the development of sulfur-oxidizing microbial mats on the surface, as seen in field observations , Quintana et al 2013, Renz & Forster 2014). More targeted food web studies are necessary to determine the potential gardening of these microbial mats by M. viridis.…”

Section: Discussionmentioning

confidence: 91%

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Species-specific effects of two bioturbating polychaetes on sediment chemoautotrophic bacteria

Vasquez‐Cardenas¹,

Quintana²,

Meysman³

et al. 2016

Mar. Ecol. Prog. Ser.

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Section: Chemoautotrophy Ratessupporting

confidence: 70%

Section: Bacterial Communitysupporting

confidence: 63%

Section: Discussionmentioning

confidence: 91%

See 1 more Smart Citation

Species-specific effects of two bioturbating polychaetes on sediment chemoautotrophic bacteria

Vasquez‐Cardenas¹,

Quintana²,

Meysman³

et al. 2016

Mar. Ecol. Prog. Ser.

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“…Other animal groups not included in this estimate such as polychaetes are only expected to contribute minimally to total animal respiration in Young Sound, with a maximum of < 0.2 mmol O 2 m −2 d −1 at 20 m depth , Sejr & Christensen 2007. While macrofauna respiration was a small component of the overall benthic O 2 uptake rate, bioturbation effects on the benthic O 2 consumption can be at least as important as the respiratory requirements of the animals themselves (Christensen et al 2000, Quintana et al 2013. Bioturbation increases the oxic volume of sediment deposits, stimulates aerobic microbial activity, and enhances the chemical oxidation of reduced products of anaerobic decay by introducing O 2 into an otherwise anoxic environment (Aller 2014).…”

Section: Fauna Contributions To Benthic O 2 Uptake Ratesmentioning

confidence: 99%

Benthic primary production and mineralization in a High Arctic fjord: in situ assessments by aquatic eddy covariance

Attard¹,

Hancke²,

Sejr³

et al. 2016

Mar. Ecol. Prog. Ser.

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at 80 m and remained constant with further depth. Fauna activity accounted for ~50% of the CR at depths ≤60 m but was <15% at depths ≥80 m. Benthic GPP and CR were comparable when scaled to the outer fjord area ≤40 m depth (2.7 and 3.1 t C d −1), and here the seabed was twice as important as the pelagic compartment for primary production. However, when scaled to the entire outer fjord area of which 80% is > 40 m, benthic GPP was 26% of the pelagic production. CR was 2-fold higher than GPP over this region (5.7 t C d −1) and thus net heterotrophic. By scaling AEC-derived Arctic benthic GPP to the entire Arctic Ocean using modelled seabed light data, we estimate an annual Arctic Ocean benthic GPP of 11.5 × 10 7 t C yr −1. On average, this value represents 26% of the Arctic Ocean annual net phytoplankton production estimates. This scarcely considered component is thus potentially important for contemporary and future Arctic ecosystem functioning.

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“…In particular, Stns 1−5 are located in areas where large bioturbating polychaetes (e.g. Arenicola marina, Nereis diversicolor and Marenzelleria viridis) capable of stimulating benthic metabolism (Banta et al 1999, Kristensen 2000, Quintana et al 2013) are present . However, large species of macrofauna have not been found at the deeper Stns 6−8 .…”

Section: Precautionsmentioning

confidence: 99%

Recovery of organic-enriched sediments through microbial degradation: implications for eutrophic estuaries

Valdemarsen¹,

Quintana²,

Kristensen³

et al. 2014

Mar. Ecol. Prog. Ser.

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Sediments in eutrophic estuarine ecosystems may become heavily enriched with organic carbon (OC). This OC is primarily of low reactivity and, therefore, has moderate effects on sediment biogeochemical cycling. Nonetheless, OC levels of >1% reduce sediment stability and cause frequent resuspensions and high water turbidity, which affect the recovery of ecosystem functioning. Significant reduction of sediment OC content to <1% is, therefore, needed before ecosystems can fully recover. It was investigated whether organic-rich sediments with 2.5 to 4.4% OC (180-310 mol m -2 ) from the eutrophic Odense Fjord (Denmark) can recover by microbial degradation. Defaunated sediment cores from various habitats were subjected to long-term (~2 yr) degradation experiments. Total OC content was measured initially and OC degradation was measured regularly from CO 2 effluxes and closed anoxic sediment incubations. OC degradation was high initially, but faded exponentially at all stations before stabilizing at 6 to 15 mmol OC m ) constituted a higher proportion (4−58% of total OC in organic-rich sediments). Furthermore, 43 to 95% of sediment OC was non-degradable. Our results suggest that partial recovery (5−57% reduction of initial OC) may occur within 23 to 50 yr. However, complete recovery of organic-rich sediments to <1% OC seems unlikely due to large pools of non-reactive OC. Eutrophication, therefore, leads to irreversible OC accumulation in sediments, which prolongs the recovery time for estuarine ecosystems after reductions in nutrient loading.

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Impact of the invasive polychaete Marenzelleria viridis on the biogeochemistry of sandy marine sediments

Cited by 43 publications

References 40 publications

Species-specific effects of two bioturbating polychaetes on sediment chemoautotrophic bacteria

Species-specific effects of two bioturbating polychaetes on sediment chemoautotrophic bacteria

Benthic primary production and mineralization in a High Arctic fjord: in situ assessments by aquatic eddy covariance

Recovery of organic-enriched sediments through microbial degradation: implications for eutrophic estuaries

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