Seasonal variability in nutrient regeneration by mussel Mytilus edulis rope culture in oligotrophic systems
Blue mussel Mytilus edulis cultures contribute to nutrient cycling in coastal ecosystems. Mussel populations filter particulate nutrients from the water column and inorganic nutrients are regenerated by excretion of metabolic wastes and decomposition of (pseudo-)faeces. The objective of this study w...
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ftunivwagenin:oai:library.wur.nl:wurpubs/420423 2024-02-04T10:02:54+01:00 Seasonal variability in nutrient regeneration by mussel Mytilus edulis rope culture in oligotrophic systems Jansen, H.M. Strand, O. Strohmeier, T. Krogness, C. Verdegem, M.C.J. Smaal, A.C. 2011 application/pdf https://research.wur.nl/en/publications/seasonal-variability-in-nutrient-regeneration-by-mussel-mytilus-e https://doi.org/10.3354/meps09095 en eng https://edepot.wur.nl/194412 https://research.wur.nl/en/publications/seasonal-variability-in-nutrient-regeneration-by-mussel-mytilus-e doi:10.3354/meps09095 info:eu-repo/semantics/restrictedAccess Wageningen University & Research Marine Ecology Progress Series 431 (2011) ISSN: 0171-8630 biodeposit production biogeochemical fluxes blue-mussel la-madeleine quebec marine mesocosm experiment north-atlantic phytoplankton suspended oyster cultures western norway info:eu-repo/semantics/article Article/Letter to editor info:eu-repo/semantics/publishedVersion 2011 ftunivwagenin https://doi.org/10.3354/meps09095 2024-01-10T23:22:10Z Blue mussel Mytilus edulis cultures contribute to nutrient cycling in coastal ecosystems. Mussel populations filter particulate nutrients from the water column and inorganic nutrients are regenerated by excretion of metabolic wastes and decomposition of (pseudo-)faeces. The objective of this study was to determine the intra-annual variability in nutrient regeneration by mussel rope cultures in oligotrophic fjord systems. In situ respiration and nutrient uptake and release rates of 1 m mussel ropes were measured using 250 l pelagic chambers. There was a 20-fold difference between winter and summer respiration and nutrient release rates. Inorganic nitrogen release ranged from 50 to 1000 µmol h–1 per meter rope. These variations were mainly related to mussel growth but were also related to changes in water temperature and biofouling biomass (organisms that colonized the mussel ropes). In total 24 genera of fouling organisms were observed, diversity increased over time (ranging from 2 to 12 genera m–1), and fouling biomass was mainly characterised by ascidians (max. 37 ± 14 g m–1). However, mussels dominated the culture ropes, representing >90% of total faunal biomass. The amount of organic material associated with the ropes was stable (6.9 ± 0.3 g m–1). At the scale of one mussel farm, nutrient regeneration by mussel rope cultures increased inorganic nitrogen concentrations by 20% and inorganic phosphorus concentrations by 5% during summer conditions. During winter, there was no significant effect of mussel cultures on the inorganic nutrient pools. Nutrient regeneration by mussel cultures also affected stoichiometry as nutrients were excreted in dissimilar proportions (nitrogen > phosphate > silicate). The increased nutrient availability may contribute to primary production, especially in nutrient-limited (oligotrophic) fjord ecosystems. However, fjord-scale effects are largely dependent on hydrographic conditions of the fjord system Article in Journal/Newspaper North Atlantic Wageningen UR (University & Research Centre): Digital Library Norway Marine Ecology Progress Series 431 137 149 |
institution |
Open Polar |
collection |
Wageningen UR (University & Research Centre): Digital Library |
op_collection_id |
ftunivwagenin |
language |
English |
topic |
biodeposit production biogeochemical fluxes blue-mussel la-madeleine quebec marine mesocosm experiment north-atlantic phytoplankton suspended oyster cultures western norway |
spellingShingle |
biodeposit production biogeochemical fluxes blue-mussel la-madeleine quebec marine mesocosm experiment north-atlantic phytoplankton suspended oyster cultures western norway Jansen, H.M. Strand, O. Strohmeier, T. Krogness, C. Verdegem, M.C.J. Smaal, A.C. Seasonal variability in nutrient regeneration by mussel Mytilus edulis rope culture in oligotrophic systems |
topic_facet |
biodeposit production biogeochemical fluxes blue-mussel la-madeleine quebec marine mesocosm experiment north-atlantic phytoplankton suspended oyster cultures western norway |
description |
Blue mussel Mytilus edulis cultures contribute to nutrient cycling in coastal ecosystems. Mussel populations filter particulate nutrients from the water column and inorganic nutrients are regenerated by excretion of metabolic wastes and decomposition of (pseudo-)faeces. The objective of this study was to determine the intra-annual variability in nutrient regeneration by mussel rope cultures in oligotrophic fjord systems. In situ respiration and nutrient uptake and release rates of 1 m mussel ropes were measured using 250 l pelagic chambers. There was a 20-fold difference between winter and summer respiration and nutrient release rates. Inorganic nitrogen release ranged from 50 to 1000 µmol h–1 per meter rope. These variations were mainly related to mussel growth but were also related to changes in water temperature and biofouling biomass (organisms that colonized the mussel ropes). In total 24 genera of fouling organisms were observed, diversity increased over time (ranging from 2 to 12 genera m–1), and fouling biomass was mainly characterised by ascidians (max. 37 ± 14 g m–1). However, mussels dominated the culture ropes, representing >90% of total faunal biomass. The amount of organic material associated with the ropes was stable (6.9 ± 0.3 g m–1). At the scale of one mussel farm, nutrient regeneration by mussel rope cultures increased inorganic nitrogen concentrations by 20% and inorganic phosphorus concentrations by 5% during summer conditions. During winter, there was no significant effect of mussel cultures on the inorganic nutrient pools. Nutrient regeneration by mussel cultures also affected stoichiometry as nutrients were excreted in dissimilar proportions (nitrogen > phosphate > silicate). The increased nutrient availability may contribute to primary production, especially in nutrient-limited (oligotrophic) fjord ecosystems. However, fjord-scale effects are largely dependent on hydrographic conditions of the fjord system |
format |
Article in Journal/Newspaper |
author |
Jansen, H.M. Strand, O. Strohmeier, T. Krogness, C. Verdegem, M.C.J. Smaal, A.C. |
author_facet |
Jansen, H.M. Strand, O. Strohmeier, T. Krogness, C. Verdegem, M.C.J. Smaal, A.C. |
author_sort |
Jansen, H.M. |
title |
Seasonal variability in nutrient regeneration by mussel Mytilus edulis rope culture in oligotrophic systems |
title_short |
Seasonal variability in nutrient regeneration by mussel Mytilus edulis rope culture in oligotrophic systems |
title_full |
Seasonal variability in nutrient regeneration by mussel Mytilus edulis rope culture in oligotrophic systems |
title_fullStr |
Seasonal variability in nutrient regeneration by mussel Mytilus edulis rope culture in oligotrophic systems |
title_full_unstemmed |
Seasonal variability in nutrient regeneration by mussel Mytilus edulis rope culture in oligotrophic systems |
title_sort |
seasonal variability in nutrient regeneration by mussel mytilus edulis rope culture in oligotrophic systems |
publishDate |
2011 |
url |
https://research.wur.nl/en/publications/seasonal-variability-in-nutrient-regeneration-by-mussel-mytilus-e https://doi.org/10.3354/meps09095 |
geographic |
Norway |
geographic_facet |
Norway |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Marine Ecology Progress Series 431 (2011) ISSN: 0171-8630 |
op_relation |
https://edepot.wur.nl/194412 https://research.wur.nl/en/publications/seasonal-variability-in-nutrient-regeneration-by-mussel-mytilus-e doi:10.3354/meps09095 |
op_rights |
info:eu-repo/semantics/restrictedAccess Wageningen University & Research |
op_doi |
https://doi.org/10.3354/meps09095 |
container_title |
Marine Ecology Progress Series |
container_volume |
431 |
container_start_page |
137 |
op_container_end_page |
149 |
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1789969914604290048 |