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Typology of planktonic food webs and associated emerging properties as indicators of the ecological status of a permanently disturbed Gulf of Gabès

dc.rights.licenseopenen_US
hal.structure.identifierFaculté des Sciences de Bizerte [Université de Carthage]
hal.structure.identifierTunis El Manar University [University of Tunis El Manar] [Tunisia] = Université de Tunis El Manar [Tunisie] = جامعة تونس المنار (ar) [UTM]
hal.structure.identifierBiologie des Organismes et Ecosystèmes Aquatiques [BOREA]
dc.contributor.authorCHKILI, Oumayma
hal.structure.identifierUnité Dynamiques des Écosystèmes Côtiers [DYNECO]
dc.contributor.authorBÉAT, Blanche Saint
hal.structure.identifierFaculté des Sciences de Bizerte [Université de Carthage]
dc.contributor.authorKOUSRI, Kaouther Mejri
hal.structure.identifierFaculté des Sciences de Bizerte [Université de Carthage]
hal.structure.identifierTunis El Manar University [University of Tunis El Manar] [Tunisia] = Université de Tunis El Manar [Tunisie] = جامعة تونس المنار (ar) [UTM]
dc.contributor.authorMEDDEB, Marouan
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorGAUVIN, Paula
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorDAVID, Valerie
hal.structure.identifierFrance Energies Marines [Brest]
dc.contributor.authorSAFI, Georges
hal.structure.identifierFaculté des Sciences de Bizerte [Université de Carthage]
hal.structure.identifierTunis El Manar University [University of Tunis El Manar] [Tunisia] = Université de Tunis El Manar [Tunisie] = جامعة تونس المنار (ar) [UTM]
dc.contributor.authorHLAILI, Asma Sakka
hal.structure.identifierBiologie des Organismes et Ecosystèmes Aquatiques [BOREA]
dc.contributor.authorNIQUIL, Nathalie
dc.date.accessioned2025-04-25T12:56:12Z
dc.date.available2025-04-25T12:56:12Z
dc.date.issued2023-11-24
dc.identifier.issn0924-7963en_US
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/206455
dc.description.abstractEnThis study highlights the importance of coupling the typology of planktonic food webs and their emerging properties to better describe the ecological status of an ecosystem under permanent disturbance mainly caused by phosphate industry. Linear inverse models were built to describe four stations under various levels of nutrient pressure, using the Markov Chain Monte Carlo method to estimate known and unknown carbon flows, later used to calculate food web typology ratios. Ecological network analysis (ENA) was used to describe the structural and functional properties of each food web. Based on the food web typology ratios, three planktonic trophic pathways (PTP) with different functional indices were distinguished according to nutrient stress. The microbial food web dominated in the least nutrient-rich environment. It mainly relied on phytoplankton production (picophytoplankton 10 µm) and channeled to higher trophic levels by herbivorous protozooplankton and metazooplankton. In the other two stationsmoderately nutrient-rich systemsthe PTP acted as a multivorous food web. Phytoplankton (small and large size fractions) and non-living components (detritus and dissolved organic carbon) played a significant role in carbon production, and competed with protozooplankton and metazooplankton for its transport. ENA indices revealed that the herbivorous food web, with the highest total system throughput and lowest relative Ascendency and cycling, was the most active but the least organized and stable system. In contrast, the microbial food web, with the lowest total system flux and highest Ascendency, was least active but more organized than the herbivorous food web. The multivorous food web displayed the most recycling and most organized system, with high values of the detritivory-to-herbivory ratio, cycling and Ascendency. In addition to ENA indices, which are considered effective tools for studying the structural and functional properties of food webs, marine ecosystem management efforts heavily focus on using the “marine food web” as a descriptor of the system’s ecological status. However, we suggest thatthe combination of food web typology and ecological indices could be used as an effective tool for the management and assessment of ecosystem health wherever possible, as well as for the study of anthropogenic pressures.
dc.language.isoENen_US
dc.subject.enFood-web modeling
dc.subject.enEcological network analysis
dc.subject.enTypology ratios
dc.subject.enMediterranean coastal ecosystem
dc.subject.enAnthropogenic pressure
dc.title.enTypology of planktonic food webs and associated emerging properties as indicators of the ecological status of a permanently disturbed Gulf of Gabès
dc.typeArticle de revueen_US
dc.identifier.doi10.1016/j.jmarsys.2023.103948en_US
dc.subject.halSciences de l'environnementen_US
bordeaux.journalJournal of Marine Systemsen_US
bordeaux.page103948en_US
bordeaux.volume242en_US
bordeaux.hal.laboratoriesEPOC : Environnements et Paléoenvironnements Océaniques et Continentaux - UMR 5805en_US
bordeaux.institutionUniversité de Bordeauxen_US
bordeaux.institutionCNRSen_US
bordeaux.teamECOBIOCen_US
bordeaux.peerReviewedouien_US
bordeaux.inpressnonen_US
bordeaux.import.sourcehal
hal.identifierhal-04336431
hal.version1
hal.popularnonen_US
hal.audienceInternationaleen_US
hal.exportfalse
workflow.import.sourcehal
dc.rights.ccPas de Licence CCen_US
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal%20of%20Marine%20Systems&rft.date=2023-11-24&rft.volume=242&rft.spage=103948&rft.epage=103948&rft.eissn=0924-7963&rft.issn=0924-7963&rft.au=CHKILI,%20Oumayma&B%C3%89AT,%20Blanche%20Saint&KOUSRI,%20Kaouther%20Mejri&MEDDEB,%20Marouan&GAUVIN,%20Paula&rft.genre=article


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