Determination of copepod grazing on natural plankton communities: correcting for trophic cascade effects
International audience Grazing rates and grazing selectivity of Antarctic copepods (Rhincalanus gigas, Calanus simillimus and copepods 0.8 to 2 mm in size) were determined using incubation experiments comparing plankton community development with and without added grazers. Estimates of grazing rates...
Published in: | Marine Ecology Progress Series |
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Online Access: | https://hal.univ-brest.fr/hal-00473804 https://hal.univ-brest.fr/hal-00473804/document https://hal.univ-brest.fr/hal-00473804/file/m357p195.pdf https://doi.org/10.3354/meps07262 |
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ftinsu:oai:HAL:hal-00473804v1 2024-02-11T09:56:22+01:00 Determination of copepod grazing on natural plankton communities: correcting for trophic cascade effects Klaas, Christine Verity, Peter G. Schultes, Sabine Max-Planck-Institut für Biogeochemie (MPI-BGC) Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung = Alfred Wegener Institute for Polar and Marine Research = Institut Alfred-Wegener pour la recherche polaire et marine (AWI) Helmholtz-Gemeinschaft = Helmholtz Association Skidaway Institute of Oceanography (SIO) Skidaway Institute of Oceanography Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) 2008-04-07 https://hal.univ-brest.fr/hal-00473804 https://hal.univ-brest.fr/hal-00473804/document https://hal.univ-brest.fr/hal-00473804/file/m357p195.pdf https://doi.org/10.3354/meps07262 en eng HAL CCSD Inter Research info:eu-repo/semantics/altIdentifier/doi/10.3354/meps07262 hal-00473804 https://hal.univ-brest.fr/hal-00473804 https://hal.univ-brest.fr/hal-00473804/document https://hal.univ-brest.fr/hal-00473804/file/m357p195.pdf doi:10.3354/meps07262 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 0171-8630 EISSN: 1616-1599 Marine Ecology Progress Series https://hal.univ-brest.fr/hal-00473804 Marine Ecology Progress Series, 2008, 357, pp.195. ⟨10.3354/meps07262⟩ ecosystem model copepod grazing Southern Ocean Rhincalanus gigas Calanus simillimus SOUTHERN-OCEAN ANTARCTIC COPEPODS IRON FERTILIZATION PREY POPULATIONS ZOOPLANKTON CHLOROPHYLL IMPACT GUT SELECTIVITY EISENEX [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography info:eu-repo/semantics/article Journal articles 2008 ftinsu https://doi.org/10.3354/meps07262 2024-01-24T17:31:13Z International audience Grazing rates and grazing selectivity of Antarctic copepods (Rhincalanus gigas, Calanus simillimus and copepods 0.8 to 2 mm in size) were determined using incubation experiments comparing plankton community development with and without added grazers. Estimates of grazing rates were corrected for trophic cascade effects using a simple ecosystem model composed of 5 compartments: (1) nanophytoplankton, (2) nanozooplankton, (3) microphytoplankton, (4) microzooplankton (mainly protozoans) and (5) copepods. Copepod grazing rates on the different planktonic compartments were derived by solving for model parameters as constrained by microscopy enumeration of nano- and microphytoplankton and nano- and microprotozooplankton in treatments with and without added copepods. Simulations based on different parameter values and model configurations support the notion that grazing estimates were robust and between 18 and 30 % higher than uncorrected estimates. Furthermore, model analyses suggest the presence of an additional trophic cascade effect due to grazing of R. gigas on small copepods and copepod developmental stages present in incubation bottles. Article in Journal/Newspaper Antarc* Antarctic Southern Ocean Copepods Institut national des sciences de l'Univers: HAL-INSU Antarctic Southern Ocean Marine Ecology Progress Series 357 195 206 |
institution |
Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
ecosystem model copepod grazing Southern Ocean Rhincalanus gigas Calanus simillimus SOUTHERN-OCEAN ANTARCTIC COPEPODS IRON FERTILIZATION PREY POPULATIONS ZOOPLANKTON CHLOROPHYLL IMPACT GUT SELECTIVITY EISENEX [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
spellingShingle |
ecosystem model copepod grazing Southern Ocean Rhincalanus gigas Calanus simillimus SOUTHERN-OCEAN ANTARCTIC COPEPODS IRON FERTILIZATION PREY POPULATIONS ZOOPLANKTON CHLOROPHYLL IMPACT GUT SELECTIVITY EISENEX [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography Klaas, Christine Verity, Peter G. Schultes, Sabine Determination of copepod grazing on natural plankton communities: correcting for trophic cascade effects |
topic_facet |
ecosystem model copepod grazing Southern Ocean Rhincalanus gigas Calanus simillimus SOUTHERN-OCEAN ANTARCTIC COPEPODS IRON FERTILIZATION PREY POPULATIONS ZOOPLANKTON CHLOROPHYLL IMPACT GUT SELECTIVITY EISENEX [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
description |
International audience Grazing rates and grazing selectivity of Antarctic copepods (Rhincalanus gigas, Calanus simillimus and copepods 0.8 to 2 mm in size) were determined using incubation experiments comparing plankton community development with and without added grazers. Estimates of grazing rates were corrected for trophic cascade effects using a simple ecosystem model composed of 5 compartments: (1) nanophytoplankton, (2) nanozooplankton, (3) microphytoplankton, (4) microzooplankton (mainly protozoans) and (5) copepods. Copepod grazing rates on the different planktonic compartments were derived by solving for model parameters as constrained by microscopy enumeration of nano- and microphytoplankton and nano- and microprotozooplankton in treatments with and without added copepods. Simulations based on different parameter values and model configurations support the notion that grazing estimates were robust and between 18 and 30 % higher than uncorrected estimates. Furthermore, model analyses suggest the presence of an additional trophic cascade effect due to grazing of R. gigas on small copepods and copepod developmental stages present in incubation bottles. |
author2 |
Max-Planck-Institut für Biogeochemie (MPI-BGC) Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung = Alfred Wegener Institute for Polar and Marine Research = Institut Alfred-Wegener pour la recherche polaire et marine (AWI) Helmholtz-Gemeinschaft = Helmholtz Association Skidaway Institute of Oceanography (SIO) Skidaway Institute of Oceanography Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Klaas, Christine Verity, Peter G. Schultes, Sabine |
author_facet |
Klaas, Christine Verity, Peter G. Schultes, Sabine |
author_sort |
Klaas, Christine |
title |
Determination of copepod grazing on natural plankton communities: correcting for trophic cascade effects |
title_short |
Determination of copepod grazing on natural plankton communities: correcting for trophic cascade effects |
title_full |
Determination of copepod grazing on natural plankton communities: correcting for trophic cascade effects |
title_fullStr |
Determination of copepod grazing on natural plankton communities: correcting for trophic cascade effects |
title_full_unstemmed |
Determination of copepod grazing on natural plankton communities: correcting for trophic cascade effects |
title_sort |
determination of copepod grazing on natural plankton communities: correcting for trophic cascade effects |
publisher |
HAL CCSD |
publishDate |
2008 |
url |
https://hal.univ-brest.fr/hal-00473804 https://hal.univ-brest.fr/hal-00473804/document https://hal.univ-brest.fr/hal-00473804/file/m357p195.pdf https://doi.org/10.3354/meps07262 |
geographic |
Antarctic Southern Ocean |
geographic_facet |
Antarctic Southern Ocean |
genre |
Antarc* Antarctic Southern Ocean Copepods |
genre_facet |
Antarc* Antarctic Southern Ocean Copepods |
op_source |
ISSN: 0171-8630 EISSN: 1616-1599 Marine Ecology Progress Series https://hal.univ-brest.fr/hal-00473804 Marine Ecology Progress Series, 2008, 357, pp.195. ⟨10.3354/meps07262⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.3354/meps07262 hal-00473804 https://hal.univ-brest.fr/hal-00473804 https://hal.univ-brest.fr/hal-00473804/document https://hal.univ-brest.fr/hal-00473804/file/m357p195.pdf doi:10.3354/meps07262 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.3354/meps07262 |
container_title |
Marine Ecology Progress Series |
container_volume |
357 |
container_start_page |
195 |
op_container_end_page |
206 |
_version_ |
1790602576175038464 |