0000000000261867

AUTHOR

Gérard Pergent

showing 5 related works from this author

Nouvelles connaissances sur les herbiers tigrés de Méditerranée.

2010

International audience; Les herbiers à Posidonia oceanica présentent plusieurs types morpho-structuraux généralement conditionnés par les conditions de milieu (profondeur, hydrodynamisme, substrat, pente, turbidité, sédimentation). Du fait de leur rareté, deux structures particulières, les récifs barrière et les herbiers tigrés, sont considérées depuis une vingtaine d'années comme des paysages marins menacés. Initialement décrits dans le golfe de Gabés, à proximité des îles Kerkennah, les herbiers tigrés se présentent sous forme " de rubans assez étroits qui se développent entre 0.5 et 3 m de profondeur sur matte ". La mise en place de nouveaux programmes d'études …

[SDE.BE] Environmental Sciences/Biodiversity and EcologySettore BIO/07 - EcologiaPosidonia oceanicaMagnoliophytes Posidonia oceanica structureMagnoliophytesstructure[SDE.BE]Environmental Sciences/Biodiversity and Ecology
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Unpublished Mediterranean records of marine alien and cryptogenic species

2020

Este artículo contiene 18 páginas, 4 figuras.

Invasions biològiques -- Mediterrània (Mar)geo-referenced records0206 medical engineeringNon-native speciesInvasive alien speciesLibrary sciencenon-native species non-indigenous distribution citizen science invasive alien species geo-referenced records Mediterranean Sea02 engineering and technologyAlienDistributionCitizen science01 natural sciencesRecords -- ManagementScience -- Mediterranean Region0103 physical sciencesAgency (sociology)citizen scienceCitizen sciencedistributionMediterranean Seamedia_common.cataloged_instancenon-indigenousZoología14. Life underwaterEuropean unionnon-indigenous speciesComputingMilieux_MISCELLANEOUSEcology Evolution Behavior and SystematicsGlobal environmental analysismedia_commonBiological invasions -- Mediterranean Seainvasive alien species010304 chemical physicsEcologySettore BIO/02 - Botanica SistematicaMarine reservenon-native speciesGeo-referenced records020601 biomedical engineeringEspècies introduïdes -- Mediterrània (Mar)Introduced organisms -- Mediterranean Sea13. Climate actionGeneral partnership[SDE]Environmental SciencesMarine protected areaCitizen science; Distribution; Geo-referenced records; Invasive alien species; Mediterranean Sea; Non-indigenous; Non-native speciesNon-indigenousScience -- Methodology -- Case studies
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Geospatial modelling and map analysis allowed measuring regression of the upper limit of Posidonia oceanica seagrass meadows under human pressure

2018

Abstract Marine coastal ecosystems are facing structural and functional changes due to the increasing human footprint worldwide, and the assessment of their long-term changes becomes particularly challenging. Measures of change can be done by comparing the observed ecosystem status to a purposely defined reference condition. In this paper, a geospatial modelling approach based on 2D mapping and morphodynamic data was used to predict the natural position of the upper limit (i.e., the landward continuous front) of Posidonia oceanica seagrass meadows settled on soft bottom. This predictive model, formerly developed at the regional spatial scale, was here applied for the first time at the Medit…

Settore BIO/07 - Ecologia0106 biological sciencesMediterranean climateGeospatial analysis010504 meteorology & atmospheric sciencesMediterranean sea Morphodynamic sPosidonia oceanica Predictive modelling Reference conditions SeagrassAquatic ScienceOceanographycomputer.software_genre01 natural sciencesMorphodynamicZoologíaEcosystemSeagrasssPosidonia oceanica0105 earth and related environmental sciencesbiology010604 marine biology & hydrobiologySeagraPredictive modellingFragmentation (computing)Posidonia oceanicaReference conditionsbiology.organism_classificationSeagrass;Predictive modelling;Reference conditions;Morphodynamics;Posidonia oceanica;Mediterranean seaMorphodynamicsRegressionSeagrassPosidonia oceanicaSettore BIO/03 - Botanica Ambientale E ApplicataMediterranean seaSpatial ecologyEnvironmental scienceReference conditionPhysical geographycomputerEstuarine, Coastal and Shelf Science
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Towards a framework for assessment and management of cumulative human impacts on marine food webs

2015

Effective ecosystem-based management requires understanding ecosystem responses to multiple human threats, rather than focusing on single threats. To understand ecosystem responses to anthropogenic threats holistically, it is necessary to know how threats affect different components within ecosystems and ultimately alter ecosystem functioning. We used a case study of a Mediterranean seagrass (Posidonia oceanica) food web and expert knowledge elicitation in an application of the initial steps of a framework for assessment of cumulative human impacts on food webs. We produced a conceptual seagrass food web model, determined the main trophic relationships, identified the main threats to the fo…

seagrassBiodiversity & Conservationvulnerability05 Environmental SciencesVulnerabilityTHREATSExpert knowledge elicitationFood chainecosystem-based managementconservation actions ecosystem-based management expert knowledge elicitation multiple threats seagrass vulnerabilityECOSYSTEM-BASED MANAGEMENTWater Pollution ChemicalZoologíaComputingMilieux_MISCELLANEOUSTrophic levelelicitationAlismatalesAcciones de conservaciónbiologyEcologymultiple threatsSeagraEnvironmental resource managementconservation actionsobtencion de conocimiento de expertosEcosystem-based managementFood webacciones de conservaciónSeagrassobtención de conocimiento de expertosBiodiversity ConservationConservation actionAlismatidaeKnow-howLife Sciences & Biomedicineacciones de conservacionAmenazas múltiplesMultiple threatSettore BIO/07 - EcologiaConservation of Natural ResourcesFood ChainFisheriesEnvironmental Sciences & EcologyManejo con base en los ecosistemasamenazas múltiplesPastos marinosexpert knowledgeOCEANexpert knowledge elicitationMediterranean SeaHumansEcosystemObtención de conocimiento de expertos14. Life underwaterEcology Evolution Behavior and SystematicsNature and Landscape ConservationScience & Technologybusiness.industrymanejo con base en los ecosistemasvulnerabilidadpastos marinos15. Life on land06 Biological Sciencesbiology.organism_classification13. Climate actionamenazas multiples07 Agricultural And Veterinary Sciences[SDE.BE]Environmental Sciences/Biodiversity and EcologybusinessVulnerabilidadEnvironmental Sciences
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Climate change and Mediterranean seagrass meadows: a synopsis for environmental managers

2014

12 páginas, 3 figuras

Mediterranean climateEnvironmental EngineeringClimate changeSeagrassesAquatic ScienceMediterraneanOceanographylcsh:Aquaculture. Fisheries. AnglingCarbon sinkEffects of global warmingEcosystem14. Life underwaterGlobal changeEcology Evolution Behavior and Systematicslcsh:SH1-6912. Zero hungerSeagrass ecosystembiologyPrimary productionEcologyGlobal warmingCarbon sinkPosidonia oceanica15. Life on landSeagrass ecosystem Posidonia oceanica global change primary production carbon sink Mediterranean seagrassesbiology.organism_classificationSeagrass ecosystemSeagrass13. Climate actionPosidonia oceanicaEnvironmental science[SDE.BE]Environmental Sciences/Biodiversity and Ecology
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