Microbial food web structural and functional responses to oyster and fish as top predators
International audience The impact of fish and oysters on components of the pelagic microbial food web (MFW) was studied in a 10 d mesocosm experiment using Mediterranean coastal waters. Two mesocosms contained natural water only (‘Controls’), 2 contained natural water with Crassostrea gigas (‘Oyster...
Published in: | Marine Ecology Progress Series |
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Main Authors: | , , , , , , , , , , , , |
Other Authors: | , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2015
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Subjects: | |
Online Access: | https://hal.science/hal-01199541 https://hal.science/hal-01199541v2/document https://hal.science/hal-01199541v2/file/Fouilland%20et%20al%20JEMBE%20%282013%29-HAL.pdf https://doi.org/10.3354/meps11429 |
id |
ftclermontuniv:oai:HAL:hal-01199541v2 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
HAL Clermont Auvergne (Université Blaise Pascal Clermont-Ferrand/Université d'Auvergne) |
op_collection_id |
ftclermontuniv |
language |
English |
topic |
Phytoplankton Bacterioplankton Virioplankton Microbial food web Protozooplankton Crassostrea Atherina Autotrophy Heterotrophy [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDV.EE.BIO]Life Sciences [q-bio]/Ecology environment/Bioclimatology |
spellingShingle |
Phytoplankton Bacterioplankton Virioplankton Microbial food web Protozooplankton Crassostrea Atherina Autotrophy Heterotrophy [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDV.EE.BIO]Life Sciences [q-bio]/Ecology environment/Bioclimatology Mostajir, Behzad Roques, Cécile Bouvier, Corinne Bouvier, Thierry Fouilland, Éric Got, Patrice Floc’h, Emilie Le Nouguier, Jean Mas, Sébastien Sempere, Richard Sime-Ngando, Télesphore Troussellier, Marc Vidussi, Francesca Microbial food web structural and functional responses to oyster and fish as top predators |
topic_facet |
Phytoplankton Bacterioplankton Virioplankton Microbial food web Protozooplankton Crassostrea Atherina Autotrophy Heterotrophy [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDV.EE.BIO]Life Sciences [q-bio]/Ecology environment/Bioclimatology |
description |
International audience The impact of fish and oysters on components of the pelagic microbial food web (MFW) was studied in a 10 d mesocosm experiment using Mediterranean coastal waters. Two mesocosms contained natural water only (‘Controls’), 2 contained natural water with Crassostrea gigas (‘Oyster’), and 2 contained natural water with Atherina spp. (‘Fish’). Abundances and biomasses of microorganisms (viruses, bacteria, phytoplankton, heterotrophic flagellates, and ciliates) were measured to estimate their contribution to the total microbial carbon biomass. Two MFW indices, the microbial autotroph:heterotroph C biomass ratio (A:H) structural index and the gross primary production:respiration ratio (GPP:R) functional index, were defined. In the Fish mesocosms, selective predation on zooplankton led to a trophic cascade with 51% higher phyto- plankton C biomass and consequently higher A:H and GPP:R than in the Controls. By the end of the experiment, the Oyster mesocosms had a bacterial C biomass 87% higher and phytoplankton C biomass 93% lower than the Controls, giving significantly lower A:H and GPP:R (<1). Overall, the results showed that wild zooplanktivorous fish had a cascading trophic effect, making the MFW more autotrophic (both indices >1), whereas oyster activities made the MFW more hetero- trophic (both indices <1). These MFW indices can therefore be used to assess the impact of multi- ple local and global forcing factors on the MFW. The results presented here also have implications for sustainable management of coastal environments, suggesting that intense cultivation of filter feeders can be coupled with management to encourage wild local zooplanktivorous fishes to maintain a more resilient system and preserve the equilibrium of the MFW. |
author2 |
MARine Biodiversity Exploitation and Conservation (UMR MARBEC) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS) Aix Marseille Université (AMU) Institut méditerranéen d'océanologie (MIO) Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS) Institut de Recherche pour le Développement (IRD France-Sud ) Université de Toulon - UFR Sciences et Techniques (UTLN UFR ScT) Université de Toulon (UTLN) Laboratoire Microorganismes : Génome et Environnement (LMGE) Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Université d'Auvergne - Clermont-Ferrand I (UdA)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Mostajir, Behzad Roques, Cécile Bouvier, Corinne Bouvier, Thierry Fouilland, Éric Got, Patrice Floc’h, Emilie Le Nouguier, Jean Mas, Sébastien Sempere, Richard Sime-Ngando, Télesphore Troussellier, Marc Vidussi, Francesca |
author_facet |
Mostajir, Behzad Roques, Cécile Bouvier, Corinne Bouvier, Thierry Fouilland, Éric Got, Patrice Floc’h, Emilie Le Nouguier, Jean Mas, Sébastien Sempere, Richard Sime-Ngando, Télesphore Troussellier, Marc Vidussi, Francesca |
author_sort |
Mostajir, Behzad |
title |
Microbial food web structural and functional responses to oyster and fish as top predators |
title_short |
Microbial food web structural and functional responses to oyster and fish as top predators |
title_full |
Microbial food web structural and functional responses to oyster and fish as top predators |
title_fullStr |
Microbial food web structural and functional responses to oyster and fish as top predators |
title_full_unstemmed |
Microbial food web structural and functional responses to oyster and fish as top predators |
title_sort |
microbial food web structural and functional responses to oyster and fish as top predators |
publisher |
HAL CCSD |
publishDate |
2015 |
url |
https://hal.science/hal-01199541 https://hal.science/hal-01199541v2/document https://hal.science/hal-01199541v2/file/Fouilland%20et%20al%20JEMBE%20%282013%29-HAL.pdf https://doi.org/10.3354/meps11429 |
genre |
Crassostrea gigas |
genre_facet |
Crassostrea gigas |
op_source |
ISSN: 0171-8630 EISSN: 1616-1599 Marine Ecology Progress Series https://hal.science/hal-01199541 Marine Ecology Progress Series, 2015, 535, pp.11-27. ⟨10.3354/meps11429⟩ http://www.int-res.com/journals/meps/meps-home/ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.3354/meps11429 hal-01199541 https://hal.science/hal-01199541 https://hal.science/hal-01199541v2/document https://hal.science/hal-01199541v2/file/Fouilland%20et%20al%20JEMBE%20%282013%29-HAL.pdf doi:10.3354/meps11429 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.3354/meps11429 |
container_title |
Marine Ecology Progress Series |
container_volume |
535 |
container_start_page |
11 |
op_container_end_page |
27 |
_version_ |
1796941196650610688 |
spelling |
ftclermontuniv:oai:HAL:hal-01199541v2 2024-04-21T08:00:46+00:00 Microbial food web structural and functional responses to oyster and fish as top predators Mostajir, Behzad Roques, Cécile Bouvier, Corinne Bouvier, Thierry Fouilland, Éric Got, Patrice Floc’h, Emilie Le Nouguier, Jean Mas, Sébastien Sempere, Richard Sime-Ngando, Télesphore Troussellier, Marc Vidussi, Francesca MARine Biodiversity Exploitation and Conservation (UMR MARBEC) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS) Aix Marseille Université (AMU) Institut méditerranéen d'océanologie (MIO) Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS) Institut de Recherche pour le Développement (IRD France-Sud ) Université de Toulon - UFR Sciences et Techniques (UTLN UFR ScT) Université de Toulon (UTLN) Laboratoire Microorganismes : Génome et Environnement (LMGE) Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Université d'Auvergne - Clermont-Ferrand I (UdA)-Centre National de la Recherche Scientifique (CNRS) 2015 https://hal.science/hal-01199541 https://hal.science/hal-01199541v2/document https://hal.science/hal-01199541v2/file/Fouilland%20et%20al%20JEMBE%20%282013%29-HAL.pdf https://doi.org/10.3354/meps11429 en eng HAL CCSD Inter Research info:eu-repo/semantics/altIdentifier/doi/10.3354/meps11429 hal-01199541 https://hal.science/hal-01199541 https://hal.science/hal-01199541v2/document https://hal.science/hal-01199541v2/file/Fouilland%20et%20al%20JEMBE%20%282013%29-HAL.pdf doi:10.3354/meps11429 info:eu-repo/semantics/OpenAccess ISSN: 0171-8630 EISSN: 1616-1599 Marine Ecology Progress Series https://hal.science/hal-01199541 Marine Ecology Progress Series, 2015, 535, pp.11-27. ⟨10.3354/meps11429⟩ http://www.int-res.com/journals/meps/meps-home/ Phytoplankton Bacterioplankton Virioplankton Microbial food web Protozooplankton Crassostrea Atherina Autotrophy Heterotrophy [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDV.EE.BIO]Life Sciences [q-bio]/Ecology environment/Bioclimatology info:eu-repo/semantics/article Journal articles 2015 ftclermontuniv https://doi.org/10.3354/meps11429 2024-03-25T15:39:22Z International audience The impact of fish and oysters on components of the pelagic microbial food web (MFW) was studied in a 10 d mesocosm experiment using Mediterranean coastal waters. Two mesocosms contained natural water only (‘Controls’), 2 contained natural water with Crassostrea gigas (‘Oyster’), and 2 contained natural water with Atherina spp. (‘Fish’). Abundances and biomasses of microorganisms (viruses, bacteria, phytoplankton, heterotrophic flagellates, and ciliates) were measured to estimate their contribution to the total microbial carbon biomass. Two MFW indices, the microbial autotroph:heterotroph C biomass ratio (A:H) structural index and the gross primary production:respiration ratio (GPP:R) functional index, were defined. In the Fish mesocosms, selective predation on zooplankton led to a trophic cascade with 51% higher phyto- plankton C biomass and consequently higher A:H and GPP:R than in the Controls. By the end of the experiment, the Oyster mesocosms had a bacterial C biomass 87% higher and phytoplankton C biomass 93% lower than the Controls, giving significantly lower A:H and GPP:R (<1). Overall, the results showed that wild zooplanktivorous fish had a cascading trophic effect, making the MFW more autotrophic (both indices >1), whereas oyster activities made the MFW more hetero- trophic (both indices <1). These MFW indices can therefore be used to assess the impact of multi- ple local and global forcing factors on the MFW. The results presented here also have implications for sustainable management of coastal environments, suggesting that intense cultivation of filter feeders can be coupled with management to encourage wild local zooplanktivorous fishes to maintain a more resilient system and preserve the equilibrium of the MFW. Article in Journal/Newspaper Crassostrea gigas HAL Clermont Auvergne (Université Blaise Pascal Clermont-Ferrand/Université d'Auvergne) Marine Ecology Progress Series 535 11 27 |