Modelling diatom growth in turbulent waters.
Identifieur interne : 004227 ( Main/Exploration ); précédent : 004226; suivant : 004228Modelling diatom growth in turbulent waters.
Auteurs : Dipen Patel [Royaume-Uni] ; K. Guganesharajah ; Brenda ThakeSource :
- Water research [ 0043-1354 ] ; 2004.
Descripteurs français
- KwdFr :
- MESH :
- croissance et développement : Diatomées.
- Eutrophisation, Modèles théoriques, Mouvements de l'eau, Prévision, Vent, Élimination des déchets liquides.
English descriptors
- KwdEn :
- MESH :
- growth & development : Diatoms.
- Eutrophication, Forecasting, Models, Theoretical, Waste Disposal, Fluid, Water Movements, Wind.
Abstract
Algal models used as tools in the management of algal blooms may be inaccurate because representation of mixing processes is often oversimplified. A testable 3-D algal model for prediction of algal growth in turbulent surface waters was developed based on the Eulerian water quality model, HYDRO-3D. Out-door mesocosm experiments on the growth of the diatom Skeletonema costatum showed no evidence that diatom growth is significantly affected by light/dark fluctuations brought about by turbulent mixing, and no direct effects of turbulence on phytoplankton physiology were required in the algal model. The algal model was successfully calibrated and validated against mesocosm data and field data from Poplar Dock, London Docklands. Application of the model gave credible results for the hypothetical growth of S. costatum in Poplar Dock under a wide range of wind speeds and surface irradiances. However, differences between the results of a full 3-D simulation and a simplified 1-D representation of Poplar Dock were minimal, and no clear conclusions could be drawn on the superiority of 3-D models over 1-D models for simulation of complex flows in natural water bodies.
DOI: 10.1016/j.watres.2003.12.030
PubMed: 15207602
Affiliations:
Links toward previous steps (curation, corpus...)
Le document en format XML
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A testable 3-D algal model for prediction of algal growth in turbulent surface waters was developed based on the Eulerian water quality model, HYDRO-3D. Out-door mesocosm experiments on the growth of the diatom Skeletonema costatum showed no evidence that diatom growth is significantly affected by light/dark fluctuations brought about by turbulent mixing, and no direct effects of turbulence on phytoplankton physiology were required in the algal model. The algal model was successfully calibrated and validated against mesocosm data and field data from Poplar Dock, London Docklands. Application of the model gave credible results for the hypothetical growth of S. costatum in Poplar Dock under a wide range of wind speeds and surface irradiances. However, differences between the results of a full 3-D simulation and a simplified 1-D representation of Poplar Dock were minimal, and no clear conclusions could be drawn on the superiority of 3-D models over 1-D models for simulation of complex flows in natural water bodies.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">15207602</PMID><DateCompleted><Year>2004</Year><Month>11</Month><Day>24</Day></DateCompleted><DateRevised><Year>2006</Year><Month>11</Month><Day>15</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Print">0043-1354</ISSN><JournalIssue CitedMedium="Print"><Volume>38</Volume><Issue>11</Issue><PubDate><Year>2004</Year><Month>Jun</Month></PubDate></JournalIssue><Title>Water research</Title><ISOAbbreviation>Water Res</ISOAbbreviation></Journal><ArticleTitle>Modelling diatom growth in turbulent waters.</ArticleTitle><Pagination><MedlinePgn>2713-25</MedlinePgn></Pagination><Abstract><AbstractText>Algal models used as tools in the management of algal blooms may be inaccurate because representation of mixing processes is often oversimplified. A testable 3-D algal model for prediction of algal growth in turbulent surface waters was developed based on the Eulerian water quality model, HYDRO-3D. Out-door mesocosm experiments on the growth of the diatom Skeletonema costatum showed no evidence that diatom growth is significantly affected by light/dark fluctuations brought about by turbulent mixing, and no direct effects of turbulence on phytoplankton physiology were required in the algal model. The algal model was successfully calibrated and validated against mesocosm data and field data from Poplar Dock, London Docklands. Application of the model gave credible results for the hypothetical growth of S. costatum in Poplar Dock under a wide range of wind speeds and surface irradiances. 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Guganesharajah</name><name sortKey="Thake, Brenda" sort="Thake, Brenda" uniqKey="Thake B" first="Brenda" last="Thake">Brenda Thake</name></noCountry><country name="Royaume-Uni"><region name="Angleterre"><name sortKey="Patel, Dipen" sort="Patel, Dipen" uniqKey="Patel D" first="Dipen" last="Patel">Dipen Patel</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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