Validation of visual bacterial mat assessment at aquaculture sites through abiotic and biotic indicators
Aquaculture conducted in sea cages typically releases organic and inorganic wastes which deposit at the seafloor and may influence resident benthic communities. In regions with predominantly hard bottom substrates such as Newfoundland, Canada, the monitoring of aquaculture waste buildup at the seafl...
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ftdoajarticles:oai:doaj.org/article:12a21719c19e42b49ef59495bcea3c2a 2023-05-15T17:22:32+02:00 Validation of visual bacterial mat assessment at aquaculture sites through abiotic and biotic indicators R. Knight JTP. Verhoeven F. Salvo D. Hamoutene SC. Dufour 2021-03-01T00:00:00Z https://doi.org/10.1016/j.ecolind.2020.107283 https://doaj.org/article/12a21719c19e42b49ef59495bcea3c2a EN eng Elsevier http://www.sciencedirect.com/science/article/pii/S1470160X20312255 https://doaj.org/toc/1470-160X 1470-160X doi:10.1016/j.ecolind.2020.107283 https://doaj.org/article/12a21719c19e42b49ef59495bcea3c2a Ecological Indicators, Vol 122, Iss , Pp 107283- (2021) Benthic mats Aquaculture impacts Monitoring Hard substrates Bacterial communities Aquaculture markers Ecology QH540-549.5 article 2021 ftdoajarticles https://doi.org/10.1016/j.ecolind.2020.107283 2022-12-31T13:04:38Z Aquaculture conducted in sea cages typically releases organic and inorganic wastes which deposit at the seafloor and may influence resident benthic communities. In regions with predominantly hard bottom substrates such as Newfoundland, Canada, the monitoring of aquaculture waste buildup at the seafloor is conducted through the use of visual indicators such as bacterial mats. To ascertain the validity of bacterial mats as indicators of aquaculture deposits, we examine relationships between substrate elemental and organic matter concentrations, bacterial community composition and the presence or absence of white bacterial mats. Substrates with bacterial communities previously defined as belonging to high impact and recently disturbed bacterial clusters showed higher concentrations of abiotic markers of aquaculture compared to substrates with low impact or intermediate impact bacterial communities. Bacterial mat presence was associated with the four pre-defined bacterial community clusters, while mat absence was mainly observed in substrates with bacterial communities indicative of low impact. Although visual indicators are less sensitive ecological indicators of benthic aquaculture effects than the determination of the identity of bacterial communities, bacterial mat presence remains a valid indicator of aquaculture-linked deposits atop hard-bottom dominated substrates. However, the absence of bacterial mats may be indicative of conditions ranging from no aquaculture impacts to low levels of deposition, and should be interpreted with caution. Article in Journal/Newspaper Newfoundland Directory of Open Access Journals: DOAJ Articles Canada Ecological Indicators 122 107283 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Benthic mats Aquaculture impacts Monitoring Hard substrates Bacterial communities Aquaculture markers Ecology QH540-549.5 |
spellingShingle |
Benthic mats Aquaculture impacts Monitoring Hard substrates Bacterial communities Aquaculture markers Ecology QH540-549.5 R. Knight JTP. Verhoeven F. Salvo D. Hamoutene SC. Dufour Validation of visual bacterial mat assessment at aquaculture sites through abiotic and biotic indicators |
topic_facet |
Benthic mats Aquaculture impacts Monitoring Hard substrates Bacterial communities Aquaculture markers Ecology QH540-549.5 |
description |
Aquaculture conducted in sea cages typically releases organic and inorganic wastes which deposit at the seafloor and may influence resident benthic communities. In regions with predominantly hard bottom substrates such as Newfoundland, Canada, the monitoring of aquaculture waste buildup at the seafloor is conducted through the use of visual indicators such as bacterial mats. To ascertain the validity of bacterial mats as indicators of aquaculture deposits, we examine relationships between substrate elemental and organic matter concentrations, bacterial community composition and the presence or absence of white bacterial mats. Substrates with bacterial communities previously defined as belonging to high impact and recently disturbed bacterial clusters showed higher concentrations of abiotic markers of aquaculture compared to substrates with low impact or intermediate impact bacterial communities. Bacterial mat presence was associated with the four pre-defined bacterial community clusters, while mat absence was mainly observed in substrates with bacterial communities indicative of low impact. Although visual indicators are less sensitive ecological indicators of benthic aquaculture effects than the determination of the identity of bacterial communities, bacterial mat presence remains a valid indicator of aquaculture-linked deposits atop hard-bottom dominated substrates. However, the absence of bacterial mats may be indicative of conditions ranging from no aquaculture impacts to low levels of deposition, and should be interpreted with caution. |
format |
Article in Journal/Newspaper |
author |
R. Knight JTP. Verhoeven F. Salvo D. Hamoutene SC. Dufour |
author_facet |
R. Knight JTP. Verhoeven F. Salvo D. Hamoutene SC. Dufour |
author_sort |
R. Knight |
title |
Validation of visual bacterial mat assessment at aquaculture sites through abiotic and biotic indicators |
title_short |
Validation of visual bacterial mat assessment at aquaculture sites through abiotic and biotic indicators |
title_full |
Validation of visual bacterial mat assessment at aquaculture sites through abiotic and biotic indicators |
title_fullStr |
Validation of visual bacterial mat assessment at aquaculture sites through abiotic and biotic indicators |
title_full_unstemmed |
Validation of visual bacterial mat assessment at aquaculture sites through abiotic and biotic indicators |
title_sort |
validation of visual bacterial mat assessment at aquaculture sites through abiotic and biotic indicators |
publisher |
Elsevier |
publishDate |
2021 |
url |
https://doi.org/10.1016/j.ecolind.2020.107283 https://doaj.org/article/12a21719c19e42b49ef59495bcea3c2a |
geographic |
Canada |
geographic_facet |
Canada |
genre |
Newfoundland |
genre_facet |
Newfoundland |
op_source |
Ecological Indicators, Vol 122, Iss , Pp 107283- (2021) |
op_relation |
http://www.sciencedirect.com/science/article/pii/S1470160X20312255 https://doaj.org/toc/1470-160X 1470-160X doi:10.1016/j.ecolind.2020.107283 https://doaj.org/article/12a21719c19e42b49ef59495bcea3c2a |
op_doi |
https://doi.org/10.1016/j.ecolind.2020.107283 |
container_title |
Ecological Indicators |
container_volume |
122 |
container_start_page |
107283 |
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1766109247498616832 |