Feeding of Plankton in a Turbulent Environment: A Comparison of Analytical and Observational Results Covering Also Strong Turbulence
The present studies address feeding of plankton in turbulent environments, discussed by a comparison of analytical results and field data. Various models for predator-prey encounters and capture probabilities are reviewed. Generalized forms for encounter rates and capture probabilities in turbulent...
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2020
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ftdoajarticles:oai:doaj.org/article:c2289a5246634e77b6663a08c39085be 2023-05-15T16:19:12+02:00 Feeding of Plankton in a Turbulent Environment: A Comparison of Analytical and Observational Results Covering Also Strong Turbulence Hans L. Pécseli Jan K. Trulsen Jan Erik Stiansen Svein Sundby 2020-03-01T00:00:00Z https://doi.org/10.3390/fluids5010037 https://doaj.org/article/c2289a5246634e77b6663a08c39085be EN eng MDPI AG https://www.mdpi.com/2311-5521/5/1/37 https://doaj.org/toc/2311-5521 2311-5521 doi:10.3390/fluids5010037 https://doaj.org/article/c2289a5246634e77b6663a08c39085be Fluids, Vol 5, Iss 1, p 37 (2020) plankton turbulence data analysis Thermodynamics QC310.15-319 Descriptive and experimental mechanics QC120-168.85 article 2020 ftdoajarticles https://doi.org/10.3390/fluids5010037 2022-12-31T11:33:39Z The present studies address feeding of plankton in turbulent environments, discussed by a comparison of analytical results and field data. Various models for predator-prey encounters and capture probabilities are reviewed. Generalized forms for encounter rates and capture probabilities in turbulent environments are proposed. The analysis emphasizes ambush predators, exemplified by cod larvae Gadus morhua L. in the start-feeding phase (stage 7 larvae) collected in shallow waters near Lofoten, Norway. During this campaign, data were obtained at four sites with strongly turbulent conditions induced by tidal currents and long-wave swells, and one site where the turbulence had a lower level in comparison. The guts of the selected cod larvae were examined in order to determine the number of nauplii ingested. Analytically obtained probability densities for the gut content were compared with observations and the results used for estimating the rate of capture of the nauplii. This capture rate was then compared with analytical results using also data for the surroundings, such as measured prey densities and turbulence conditions, as quantified by the specific energy dissipation rate. Different from earlier studies, the presented data include conditions where the turbulence exceeds the level for optimal larval encounter-capture rates. Article in Journal/Newspaper Gadus morhua Lofoten Directory of Open Access Journals: DOAJ Articles Lofoten Norway Fluids 5 1 37 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
plankton turbulence data analysis Thermodynamics QC310.15-319 Descriptive and experimental mechanics QC120-168.85 |
spellingShingle |
plankton turbulence data analysis Thermodynamics QC310.15-319 Descriptive and experimental mechanics QC120-168.85 Hans L. Pécseli Jan K. Trulsen Jan Erik Stiansen Svein Sundby Feeding of Plankton in a Turbulent Environment: A Comparison of Analytical and Observational Results Covering Also Strong Turbulence |
topic_facet |
plankton turbulence data analysis Thermodynamics QC310.15-319 Descriptive and experimental mechanics QC120-168.85 |
description |
The present studies address feeding of plankton in turbulent environments, discussed by a comparison of analytical results and field data. Various models for predator-prey encounters and capture probabilities are reviewed. Generalized forms for encounter rates and capture probabilities in turbulent environments are proposed. The analysis emphasizes ambush predators, exemplified by cod larvae Gadus morhua L. in the start-feeding phase (stage 7 larvae) collected in shallow waters near Lofoten, Norway. During this campaign, data were obtained at four sites with strongly turbulent conditions induced by tidal currents and long-wave swells, and one site where the turbulence had a lower level in comparison. The guts of the selected cod larvae were examined in order to determine the number of nauplii ingested. Analytically obtained probability densities for the gut content were compared with observations and the results used for estimating the rate of capture of the nauplii. This capture rate was then compared with analytical results using also data for the surroundings, such as measured prey densities and turbulence conditions, as quantified by the specific energy dissipation rate. Different from earlier studies, the presented data include conditions where the turbulence exceeds the level for optimal larval encounter-capture rates. |
format |
Article in Journal/Newspaper |
author |
Hans L. Pécseli Jan K. Trulsen Jan Erik Stiansen Svein Sundby |
author_facet |
Hans L. Pécseli Jan K. Trulsen Jan Erik Stiansen Svein Sundby |
author_sort |
Hans L. Pécseli |
title |
Feeding of Plankton in a Turbulent Environment: A Comparison of Analytical and Observational Results Covering Also Strong Turbulence |
title_short |
Feeding of Plankton in a Turbulent Environment: A Comparison of Analytical and Observational Results Covering Also Strong Turbulence |
title_full |
Feeding of Plankton in a Turbulent Environment: A Comparison of Analytical and Observational Results Covering Also Strong Turbulence |
title_fullStr |
Feeding of Plankton in a Turbulent Environment: A Comparison of Analytical and Observational Results Covering Also Strong Turbulence |
title_full_unstemmed |
Feeding of Plankton in a Turbulent Environment: A Comparison of Analytical and Observational Results Covering Also Strong Turbulence |
title_sort |
feeding of plankton in a turbulent environment: a comparison of analytical and observational results covering also strong turbulence |
publisher |
MDPI AG |
publishDate |
2020 |
url |
https://doi.org/10.3390/fluids5010037 https://doaj.org/article/c2289a5246634e77b6663a08c39085be |
geographic |
Lofoten Norway |
geographic_facet |
Lofoten Norway |
genre |
Gadus morhua Lofoten |
genre_facet |
Gadus morhua Lofoten |
op_source |
Fluids, Vol 5, Iss 1, p 37 (2020) |
op_relation |
https://www.mdpi.com/2311-5521/5/1/37 https://doaj.org/toc/2311-5521 2311-5521 doi:10.3390/fluids5010037 https://doaj.org/article/c2289a5246634e77b6663a08c39085be |
op_doi |
https://doi.org/10.3390/fluids5010037 |
container_title |
Fluids |
container_volume |
5 |
container_issue |
1 |
container_start_page |
37 |
_version_ |
1766005546963435520 |