Reduced physiological performance in a free-living coralline alga induced by salmon faeces deposition
Maerl beds are formed by the accumulation of free-living coralline algae and have considerable ecological significance due to the high diversity of associated fauna and flora. The rapid expansion of the Atlantic salmon Salmo salar aquaculture industry in Norway may have major impacts on surrounding m...
Published in: | Aquaculture Environment Interactions |
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Online Access: | https://hdl.handle.net/11250/2823803 https://doi.org/10.3354/AEI00403 |
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ftimr:oai:imr.brage.unit.no:11250/2823803 2023-05-15T15:32:37+02:00 Reduced physiological performance in a free-living coralline alga induced by salmon faeces deposition Legrand, Erwann Kutti, Tina Casal, Erika V. Gonzalez Rastrick, Samuel Andersen, Sissel Husa, Vivian 2021 application/pdf https://hdl.handle.net/11250/2823803 https://doi.org/10.3354/AEI00403 eng eng Fiskeri- og havbruksnæringens forskningsfinansiering: 14900 Aquaculture Environment Interactions. 2021, 13 225-236. urn:issn:1869-215X https://hdl.handle.net/11250/2823803 https://doi.org/10.3354/AEI00403 cristin:1925208 225-236 13 Aquaculture Environment Interactions Peer reviewed Journal article 2021 ftimr https://doi.org/10.3354/AEI00403 2021-10-20T22:36:23Z Maerl beds are formed by the accumulation of free-living coralline algae and have considerable ecological significance due to the high diversity of associated fauna and flora. The rapid expansion of the Atlantic salmon Salmo salar aquaculture industry in Norway may have major impacts on surrounding maerl beds through the release of effluents, including fish faeces. This study is the first to test the effects of salmon faeces and inorganic sediment deposition on the photosynthesis, respiration, calcification and pigment content of the coralline alga Lithothamnion soriferum. In a 6 wk laboratory experiment, inorganic sediment and salmon faeces deposition significantly reduced the amount of light reaching the surface of coralline algae. No impact of inorganic sediment deposition was detected on L. soriferum physiology, while salmon faeces deposition increased respiration rate and reduced net primary production and calcification. The accumulation of salmon faeces stimulates proliferation of bacteria, with adverse consequences on L. soriferum physiology due to the potential release of toxic compounds. Burial by salmon faeces deposition also affects the physiology of coralline algae due to the flocculation of sticky faeces particles, which may limit nutrient and gas exchanges in the vicinity of thalli. Carbon dioxide accumulation in the vicinity of L. soriferum may lead to a decline in pH and alter the calcification process in cell walls. In natural maerl beds, the negative effect of faeces deposition may be exacerbated by longer-term exposure and the presence of other chemicals released by fish farms. publishedVersion Article in Journal/Newspaper Atlantic salmon Salmo salar Institute for Marine Research: Brage IMR Norway Aquaculture Environment Interactions 13 225 236 |
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Open Polar |
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Institute for Marine Research: Brage IMR |
op_collection_id |
ftimr |
language |
English |
description |
Maerl beds are formed by the accumulation of free-living coralline algae and have considerable ecological significance due to the high diversity of associated fauna and flora. The rapid expansion of the Atlantic salmon Salmo salar aquaculture industry in Norway may have major impacts on surrounding maerl beds through the release of effluents, including fish faeces. This study is the first to test the effects of salmon faeces and inorganic sediment deposition on the photosynthesis, respiration, calcification and pigment content of the coralline alga Lithothamnion soriferum. In a 6 wk laboratory experiment, inorganic sediment and salmon faeces deposition significantly reduced the amount of light reaching the surface of coralline algae. No impact of inorganic sediment deposition was detected on L. soriferum physiology, while salmon faeces deposition increased respiration rate and reduced net primary production and calcification. The accumulation of salmon faeces stimulates proliferation of bacteria, with adverse consequences on L. soriferum physiology due to the potential release of toxic compounds. Burial by salmon faeces deposition also affects the physiology of coralline algae due to the flocculation of sticky faeces particles, which may limit nutrient and gas exchanges in the vicinity of thalli. Carbon dioxide accumulation in the vicinity of L. soriferum may lead to a decline in pH and alter the calcification process in cell walls. In natural maerl beds, the negative effect of faeces deposition may be exacerbated by longer-term exposure and the presence of other chemicals released by fish farms. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Legrand, Erwann Kutti, Tina Casal, Erika V. Gonzalez Rastrick, Samuel Andersen, Sissel Husa, Vivian |
spellingShingle |
Legrand, Erwann Kutti, Tina Casal, Erika V. Gonzalez Rastrick, Samuel Andersen, Sissel Husa, Vivian Reduced physiological performance in a free-living coralline alga induced by salmon faeces deposition |
author_facet |
Legrand, Erwann Kutti, Tina Casal, Erika V. Gonzalez Rastrick, Samuel Andersen, Sissel Husa, Vivian |
author_sort |
Legrand, Erwann |
title |
Reduced physiological performance in a free-living coralline alga induced by salmon faeces deposition |
title_short |
Reduced physiological performance in a free-living coralline alga induced by salmon faeces deposition |
title_full |
Reduced physiological performance in a free-living coralline alga induced by salmon faeces deposition |
title_fullStr |
Reduced physiological performance in a free-living coralline alga induced by salmon faeces deposition |
title_full_unstemmed |
Reduced physiological performance in a free-living coralline alga induced by salmon faeces deposition |
title_sort |
reduced physiological performance in a free-living coralline alga induced by salmon faeces deposition |
publishDate |
2021 |
url |
https://hdl.handle.net/11250/2823803 https://doi.org/10.3354/AEI00403 |
geographic |
Norway |
geographic_facet |
Norway |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
225-236 13 Aquaculture Environment Interactions |
op_relation |
Fiskeri- og havbruksnæringens forskningsfinansiering: 14900 Aquaculture Environment Interactions. 2021, 13 225-236. urn:issn:1869-215X https://hdl.handle.net/11250/2823803 https://doi.org/10.3354/AEI00403 cristin:1925208 |
op_doi |
https://doi.org/10.3354/AEI00403 |
container_title |
Aquaculture Environment Interactions |
container_volume |
13 |
container_start_page |
225 |
op_container_end_page |
236 |
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1766363117583859712 |