Benthic foraminiferal biomonitoring in northern Norway: Establishing reference conditions, Ecological Quality Statuses and responses to organic matter

Benthic foraminifera are microscopically small organisms living in marine sediments where they live in tiny little houses also known as tests. Foraminifera respond rapidly to environmental changes and as many of their tests preserve in the sediment their assemblages can provide estimates of previous...

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Main Author: Klootwijk, Anouk Tosca
Format: Doctoral or Postdoctoral Thesis
Language:English
Published: 2021
Subjects:
Norway
Northern Norway
Online Access:http://hdl.handle.net/10852/89428
http://urn.nb.no/URN:NBN:no-92036
id ftoslouniv:oai:www.duo.uio.no:10852/89428
record_format openpolar
spelling ftoslouniv:oai:www.duo.uio.no:10852/89428 2024-09-30T14:40:11+00:00 Benthic foraminiferal biomonitoring in northern Norway: Establishing reference conditions, Ecological Quality Statuses and responses to organic matter Klootwijk, Anouk Tosca 2021 http://hdl.handle.net/10852/89428 http://urn.nb.no/URN:NBN:no-92036 en eng Paper 1 (published): Klootwijk, A.T., Alve, E., Hess, S., Renaud, P.E., Sørlie, C., Dolven, J.K., 2020. Monitoring environmental impacts of fish farms: Comparing reference conditions of sediment geochemistry and benthic foraminifera with the present. Ecological Indicators, volume: 120. DOI:10.1016/j.ecolind.2020.106818. The article is included in the thesis. Also available at: https://doi.org/10.1016/j.ecolind.2020.106818 Paper 2 (Published): Klootwijk, A.T., Sweetman, A.K., Hess, S., Alve, E., Dunlop, K.M. and Renaud, P.E., 2021. Benthic foraminiferal carbon cycling in coastal zone sediments: The influence of the assemblage structure and jellyfish detritus. Estuarine, Coastal and Shelf Science, p.107535. DOI:10.1016/j.ecss.2021.107535. The article is included in the thesis. Also available at: https://doi.org/10.1016/j.ecss.2021.107535 Paper 3 (Submitted): Does the analysed size fraction for benthic foraminifera influence the Ecological Quality Status? Indications from two northern Norwegian fjords. Submitted to Ecological Indicators. To be published. The paper is not available in DUO awaiting publishing. https://doi.org/10.1016/j.ecolind.2020.106818 https://doi.org/10.1016/j.ecss.2021.107535 http://urn.nb.no/URN:NBN:no-92036 http://hdl.handle.net/10852/89428 URN:NBN:no-92036 Fulltext https://www.duo.uio.no/bitstream/handle/10852/89428/1/PhD-Klootwijk-2021.pdf Doctoral thesis Doktoravhandling 2021 ftoslouniv https://doi.org/10.1016/j.ecolind.2020.10681810.1016/j.ecss.2021.107535 2024-09-12T05:44:04Z Benthic foraminifera are microscopically small organisms living in marine sediments where they live in tiny little houses also known as tests. Foraminifera respond rapidly to environmental changes and as many of their tests preserve in the sediment their assemblages can provide estimates of previous environmental conditions. This makes them good candidates to study human impacts on the environment but we also have to understand their responses to environmental changes. By using benthic foraminifera to reconstruct pre-human impact environmental conditions, the first study of this thesis found no clear impact of fish farming in an intensively fish farmed fjord at 2-3 km distance from the farms. The second study showed the amount of microalgal-carbon foraminifera can process may strongly vary within a fjord. Oxygen concentrations in the sediment may influence the ability of foraminifera to process carbon. The third study suggests analysing benthic foraminifera from the less labour intensive > 125 µm fraction may be sufficient to assess human impact in relatively unpolluted fjords. This thesis made important steps towards using foraminifera to study human impacts on the environment. Doctoral or Postdoctoral Thesis Northern Norway Universitet i Oslo: Digitale utgivelser ved UiO (DUO) Norway
institution Open Polar
collection Universitet i Oslo: Digitale utgivelser ved UiO (DUO)
op_collection_id ftoslouniv
language English
description Benthic foraminifera are microscopically small organisms living in marine sediments where they live in tiny little houses also known as tests. Foraminifera respond rapidly to environmental changes and as many of their tests preserve in the sediment their assemblages can provide estimates of previous environmental conditions. This makes them good candidates to study human impacts on the environment but we also have to understand their responses to environmental changes. By using benthic foraminifera to reconstruct pre-human impact environmental conditions, the first study of this thesis found no clear impact of fish farming in an intensively fish farmed fjord at 2-3 km distance from the farms. The second study showed the amount of microalgal-carbon foraminifera can process may strongly vary within a fjord. Oxygen concentrations in the sediment may influence the ability of foraminifera to process carbon. The third study suggests analysing benthic foraminifera from the less labour intensive > 125 µm fraction may be sufficient to assess human impact in relatively unpolluted fjords. This thesis made important steps towards using foraminifera to study human impacts on the environment.
format Doctoral or Postdoctoral Thesis
author Klootwijk, Anouk Tosca
spellingShingle Klootwijk, Anouk Tosca
Benthic foraminiferal biomonitoring in northern Norway: Establishing reference conditions, Ecological Quality Statuses and responses to organic matter
author_facet Klootwijk, Anouk Tosca
author_sort Klootwijk, Anouk Tosca
title Benthic foraminiferal biomonitoring in northern Norway: Establishing reference conditions, Ecological Quality Statuses and responses to organic matter
title_short Benthic foraminiferal biomonitoring in northern Norway: Establishing reference conditions, Ecological Quality Statuses and responses to organic matter
title_full Benthic foraminiferal biomonitoring in northern Norway: Establishing reference conditions, Ecological Quality Statuses and responses to organic matter
title_fullStr Benthic foraminiferal biomonitoring in northern Norway: Establishing reference conditions, Ecological Quality Statuses and responses to organic matter
title_full_unstemmed Benthic foraminiferal biomonitoring in northern Norway: Establishing reference conditions, Ecological Quality Statuses and responses to organic matter
title_sort benthic foraminiferal biomonitoring in northern norway: establishing reference conditions, ecological quality statuses and responses to organic matter
publishDate 2021
url http://hdl.handle.net/10852/89428
http://urn.nb.no/URN:NBN:no-92036
geographic Norway
geographic_facet Norway
genre Northern Norway
genre_facet Northern Norway
op_relation Paper 1 (published): Klootwijk, A.T., Alve, E., Hess, S., Renaud, P.E., Sørlie, C., Dolven, J.K., 2020. Monitoring environmental impacts of fish farms: Comparing reference conditions of sediment geochemistry and benthic foraminifera with the present. Ecological Indicators, volume: 120. DOI:10.1016/j.ecolind.2020.106818. The article is included in the thesis. Also available at: https://doi.org/10.1016/j.ecolind.2020.106818
Paper 2 (Published): Klootwijk, A.T., Sweetman, A.K., Hess, S., Alve, E., Dunlop, K.M. and Renaud, P.E., 2021. Benthic foraminiferal carbon cycling in coastal zone sediments: The influence of the assemblage structure and jellyfish detritus. Estuarine, Coastal and Shelf Science, p.107535. DOI:10.1016/j.ecss.2021.107535. The article is included in the thesis. Also available at: https://doi.org/10.1016/j.ecss.2021.107535
Paper 3 (Submitted): Does the analysed size fraction for benthic foraminifera influence the Ecological Quality Status? Indications from two northern Norwegian fjords. Submitted to Ecological Indicators. To be published. The paper is not available in DUO awaiting publishing.
https://doi.org/10.1016/j.ecolind.2020.106818
https://doi.org/10.1016/j.ecss.2021.107535
http://urn.nb.no/URN:NBN:no-92036
http://hdl.handle.net/10852/89428
URN:NBN:no-92036
Fulltext https://www.duo.uio.no/bitstream/handle/10852/89428/1/PhD-Klootwijk-2021.pdf
op_doi https://doi.org/10.1016/j.ecolind.2020.10681810.1016/j.ecss.2021.107535
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