262 documents satisfont la requête.
Flocculation Potential of Estuarine Particles: The Importance of Environmental Factors and of the Spatial and Seasonal Variability of Suspended Particulate Matter
Auteur(s) : Verney, Romaric Lafite, Robert Brun-cottan, Jean-claude
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1,000 A mu m). Flocculation processes were estimated using three parameters: flocculation efficiency, flocculation speed, and flocculation time. Results showed that the flocculation that occurred at the three stations was mainly influenced by the concentration of the suspended particulate matter: maximum floc size was observed for concentrations above 0.1 g l(-1) while no flocculation was observed for concentrations below 0.004 g l(-1). Diatom blooms strongly enhanced flocculation speed and, to a lesser extent, flocculation efficiency. During this period, the maximum flocculation speed of 6 A mu m min(-1) corresponded to a flocculation time of less than 20 min. Salinity did not appear to automatically enhance flocculation, which depended on the constituents of suspended sediments and on the content and concentration of organic matter. Examination of the variability of 2D fractal dimension during flocculation experiments revealed restructuring of flocs during aggregation. This was observed as a rapid decrease in the floc fractal dimension from 2 to 1.4 during the first minutes of the flocculation stage, followed by a slight increase up to 1.8. Deflocculation experiments enabled determination of the influence of turbulent structures on flocculation processes and confirmed that turbulent intensity is one of the main determining factors of maximum floc size."> 1,000 A mu m). Flocculation processes were estimated using three parameters: flocculation efficiency, flocculation speed, and flocculation time. Results showed that the flocculation that occurred at the three stations was mainly influenced by the concentration of the suspended particulate matter: maximum floc size was observed for concentrations above 0.1 g l(-1) while no flocculation was observed for concentrations below 0.004 g l(-1). Diatom blooms strongly enhanced flocculation speed and, to a lesser extent, flocculation efficiency. During this period, the maximum flocculation speed of 6 A mu m min(-1) corresponded to a flocculation time of less than 20 min. Salinity did not appear to automatically enhance flocculation, which depended on the constituents of suspended sediments and on the content and concentration of organic matter. Examination of the variability of 2D fractal dimension during flocculation experiments revealed restructuring of flocs during aggregation. This was observed as a rapid decrease in the floc fractal dimension from 2 to 1.4 during the first minutes of the flocculation stage, followed by a slight increase up to 1.8. Deflocculation experiments enabled determination of the influence of turbulent structures on flocculation processes and confirmed that turbulent intensity is one of the main determining factors of maximum floc size."> 1,000 A mu m). Flocculation processes were estimated using three parameters: flocculation efficiency, flocculation speed, and flocculation time. Results showed that the flocculation that occurred at the three stations was mainly influenced by the concentration of the suspended particulate matter: maximum floc size was observed for concentrations above 0.1 g l(-1) while no flocculation was observed for concentrations below 0.004 g l(-1). Diatom blooms strongly enhanced flocculation speed and, to a lesser extent, flocculation efficiency. During this period, the maximum flocculation speed of 6 A mu m min(-1) corresponded to a flocculation time of less than 20 min. Salinity did not appear to automatically enhance flocculation, which depended on the constituents of suspended sediments and on the content and concentration of organic matter. Examination of the variability of 2D fractal dimension during flocculation experiments revealed restructuring of flocs during aggregation. This was observed as a rapid decrease in the floc fractal dimension from 2 to 1.4 during the first minutes of the flocculation stage, followed by a slight increase up to 1.8. Deflocculation experiments enabled determination of the influence of turbulent structures on flocculation processes and confirmed that turbulent intensity is one of the main determining factors of maximum floc size."> 1,000 A mu m). Flocculation processes were estimated using three parameters: flocculation efficiency, flocculation speed, and flocculation time. Results showed that the flocculation that occurred at the three stations was mainly influenced by the concentration of the suspended particulate matter: maximum floc size was observed for concentrations above 0.1 g l(-1) while no flocculation was observed for concentrations below 0.004 g l(-1). Diatom blooms strongly enhanced flocculation speed and, to a lesser extent, flocculation efficiency. During this period, the maximum flocculation speed of 6 A mu m min(-1) corresponded to a flocculation time of less than 20 min. Salinity did not appear to automatically enhance flocculation, which depended on the constituents of suspended sediments and on the content and concentration of organic matter. Examination of the variability of 2D fractal dimension during flocculation experiments revealed restructuring of flocs during aggregation. This was observed as a rapid decrease in the floc fractal dimension from 2 to 1.4 during the first minutes of the flocculation stage, followed by a slight increase up to 1.8. Deflocculation experiments enabled determination of the influence of turbulent structures on flocculation processes and confirmed that turbulent intensity is one of the main determining factors of maximum floc size."> | 1,000 A mu m). Flocculation processes were estimated using three parameters: flocculation efficiency, flocculation speed, and flocculation time. Results showed that the flocculation that occurred at the three stations was mainly influenced by the concentration of the suspended particulate matter: maximum floc size was observed for concentrations above 0.1 g l(-1) while no flocculation was observed for concentrations below 0.004 g l(-1). Diatom blooms strongly enhanced flocculation speed and, to a lesser extent, flocculation efficiency. During this period, the maximum flocculation speed of 6 A mu m min(-1) corresponded to a flocculation time of less than 20 min. Salinity did not appear to automatically enhance flocculation, which depended on the constituents of suspended sediments and on the content and concentration of organic matter. Examination of the variability of 2D fractal dimension during flocculation experiments revealed restructuring of flocs during aggregation. This was observed as a rapid decrease in the floc fractal dimension from 2 to 1.4 during the first minutes of the flocculation stage, followed by a slight increase up to 1.8. Deflocculation experiments enabled determination of the influence of turbulent structures on flocculation processes and confirmed that turbulent intensity is one of the main determining factors of maximum floc size.">Plus
Phylogenetic diversity of Amazonian tree communities
Auteur(s) : Honorio Coronado, Eurídice N. Dexter, Kyle G. Pennington, R. Toby Chave, Jérôme Lewis, Simon L. Alexiades, Miguel N. Alvarez, Esteban Alves de Oliveira, Atila
Auteurs secondaires : School of Geography [Leeds] ; University of Leeds School of Geosciences [Edinburgh] ; University of Edinburgh Royal Botanic Garden Edinburgh Evolution et diversité biologique (EDB) ; Université Paul Sabatier - Toulouse 3 (UPS) - Ecole Nationale Supérieure Agronomique de Toulouse - Centre National de la Recherche Scientifique (CNRS) University of Kent [Canterbury] Instituto Nacional de Pesquisas da Amazônia (INPA) ; Instituto Nacional de Pesquisas da Amazônia Projeto TEAM-Manaus ; Instituto Nacional de Pesquisas da Amazônia Universidad Autonoma Gabriel René Moreno (UAGRM)
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Spatial patterns of rainfall regimes related to levels of double cropping agriculture systems in Mato Grosso (Brazil)
Auteur(s) : Arvor, Damien Dubreuil, Vincent Ronchail, Josyane Meirelles, Margareth Simões Penello Funatsu, B. M.
Auteurs secondaires : Espace pour le Développement (ESPACE-DEV) ; Université Montpellier 2 - Sciences et Techniques (UM2) - Université des Antilles et de la Guyane (UAG) - Institut de recherche pour le développement [IRD] - Université de la Réunion Littoral, Environnement, Télédétection, Géomatique (LETG - Costel) ; Université de Nantes (UN) - Université de Caen Basse-Normandie - Université de Bretagne Occidentale (UBO) - Université de Rennes II - Haute Bretagne - CNRS Université Rennes 2 - UFR Sciences sociales (UR2 UFRSS) ; Université européenne de Bretagne (UEB) - Université de Rennes II - Haute Bretagne Centre Armoricain de Recherche en Environnement (CARE) ; CNRS - Institut national de la recherche agronomique (INRA) - Ecole Nationale Supérieure Agronomique de Rennes - Université de Rennes 1 (UR1) - Université de Rennes II - Haute Bretagne Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) ; CNRS - Université Pierre et Marie Curie - Paris 6 (UPMC) - Muséum national d'histoire naturelle (MNHN) - Institut de recherche pour le développement [IRD] - INSU Departamento de Engenharia de Sistemas e Computação – Pos Graduação em Geomatica (Departamento de Engenharia de Sistemas e Computação) ; Universidade do Estado do Rio de Janeiro Laboratoire de Météorologie Dynamique (LMD) ; CNRS - INSU - Polytechnique - X - École normale supérieure - Paris (ENS Paris) - Université Pierre et Marie Curie - Paris 6 (UPMC) ANR-06-BLAN-0176, DURAMAZ, Les déterminants géographiques, démographiques et socio-économiques de la durabilité en Amazonie brésilienne.(2006)
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Influence of oyster culture practices and environmental conditions on the ecological status of intertidal mudflats in the Pertuis Charentais (SW France): A multi-index approach
Auteur(s) : Bouchet, Vincent Sauriau, Pierre-guy
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Notes on the biology of the bigeye scad, Selar crumenophthalmus (Carangidae) around Reunion Island, southwest Indian Ocean
Auteur(s) : Roos, David Roux, Olivier Conand, François
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Ecological genetic and genomic of divergences events of species complexes in tropical rain forest ; Génétique écologique et génomique des évènements de divergence chez les complexes d’espèces en forêt tropicale humide
Auteur(s) : Tinaut, Alexandra
Auteurs secondaires : Ecologie des forêts de Guyane (ECOFOG) ; Centre de Coopération Internationale en Recherche Agronomique pour le Développement (CIRAD) - Institut National de la Recherche Agronomique (INRA) - Université des Antilles et de la Guyane (UAG) - AgroParisTech - Université de Guyane (UG) - Centre National de la Recherche Scientifique (CNRS) Université de Guyane Ivan Scotti Caroline Scotti-Saintagne
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Time variability of the north-western Mediterranean Sea pH over 1995–2011
Auteur(s) : Marcellin Yao, Koffi Marcou, Olivier Goyet, Catherine Guglielmi, Véronique Touratier, Franck Savy, Jean-Philippe
Auteurs secondaires : Centre de Recherches Océanologiques (CRO) Institut de Modélisation et d'Analyses en Géo-Environnement et Santé - Espace Développement (IMAGES-Espace DEV) ; Université de Perpignan Via Domitia (UPVD) - Espace pour le Développement (UMR ESPACE-DEV) ; Université des Antilles et de la Guyane (UAG) - Université de la Réunion - Université de Montpellier (UM) - Institut de Recherche pour le Développement (IRD) - Université des Antilles et de la Guyane (UAG) - Université de la Réunion - Université de Montpellier (UM) - Institut de Recherche pour le Développement (IRD)
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Construction et étude d'un modèle de réseau trophique de la vasière de Brouage (bassin de marennes Oléron, France). Prise en compte de la saisonnalité et des échanges physiques pour la synthèse constructive des connaissances sur une zone intertidale d'une région tempérée.
Auteur(s) : Leguerrier, Dephine
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Larval dispersal and movement patterns of coral reef fishes, and implications for marine reserve network design
Auteur(s) : Green, Alison L. Maypa, Aileen P. Almany, Glenn R. Rhodes, Kevin L. Weeks, Rebecca Abesamis, Rene A. Gleason, Mary G. Mumby, Peter J.
Auteurs secondaires : The Nature Conservancy ; The Nature Conservancy ARC Centre of Excellence for Coral Reef Studies (CoralCoE) ; James Cook University (JCU) Coastal Conservation and Education Foundation (CCEF) Laboratoire d'Excellence CORAIL (LabEX CORAIL) ; Institut de Recherche pour le Développement (IRD) - Université des Antilles et de la Guyane (UAG) - École des hautes études en sciences sociales (EHESS) - École pratique des hautes études (EPHE) - Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) - Université de la Réunion (UR) - Université de la Polynésie Française (UPF) - Université de Nouvelle Calédonie - Institut d'écologie et environnement Centre de recherches insulaires et observatoire de l'environnement (CRIOBE) ; Université de Perpignan Via Domitia (UPVD) - École pratique des hautes études (EPHE) - Centre National de la Recherche Scientifique (CNRS) College of Aquaculture, Forestry and Natural Resource Management (CAFNRM) ; University of Hawai'i at Hilo Angelo King Center for Research and Environmental Management ; Silliman University Marine Spatial Ecology Laboratory [Brisbane] (MSEL) ; The University of Queensland [Brisbane]
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Groundwater fluxes within sandy beaches: swash-driven flow vs cross-barrier gradients
Auteur(s) : Sous, Damien PETITJEAN, Lise Bouchette, Frederic Rey, Vincent Meulé, Samuel Sabatier, François
Auteurs secondaires : Institut méditerranéen d'océanologie (MIO) ; Institut de Recherche pour le Développement (IRD) - Aix Marseille Université (AMU) - Institut de recherche pour le développement [IRD] : UMR235 - Université de Toulon (UTLN) - Centre National de la Recherche Scientifique (CNRS) Géosciences Montpellier ; Université des Antilles et de la Guyane (UAG) - Institut national des sciences de l'Univers (INSU - CNRS) - Université de Montpellier (UM) - Centre National de la Recherche Scientifique (CNRS) Centre européen de recherche et d'enseignement de géosciences de l'environnement (CEREGE) ; Institut de Recherche pour le Développement (IRD) - Aix Marseille Université (AMU) - Collège de France (CdF) - Institut national des sciences de l'Univers (INSU - CNRS) - Centre National de la Recherche Scientifique (CNRS)
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Problems of Development of Tourism and Yachting on the Coast of Gdansk Pomerania (Poland)
Auteur(s) : A. Wendt, Jan Wiskulski, Tomasz
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Gas transfer velocities of CO2 and CH4 in a tropical reservoir and its river downstream
Auteur(s) : Guérin, F. Abril, G. Serça, D. Delon, C. Richard, S. Delmas, Robert Tremblay, A. Varfalvy, L.
Auteurs secondaires : Laboratoire d'aérologie - LA (LA) ; Université Paul Sabatier - Toulouse 3 (UPS) - Institut national des sciences de l'Univers (INSU - CNRS) - Observatoire Midi-Pyrénées (OMP) - Centre National de la Recherche Scientifique (CNRS) Environnements et Paléoenvironnements OCéaniques (EPOC) ; Observatoire aquitain des sciences de l'univers (OASU) ; Université Sciences et Technologies - Bordeaux 1 - Institut national des sciences de l'Univers (INSU - CNRS) - Centre National de la Recherche Scientifique (CNRS) - Université Sciences et Technologies - Bordeaux 1 - Institut national des sciences de l'Univers (INSU - CNRS) - Centre National de la Recherche Scientifique (CNRS) - École pratique des hautes études (EPHE) - Centre National de la Recherche Scientifique (CNRS) Laboratoire Hydreco ; Université des Antilles et de la Guyane (UAG) Équipe Troposphère ; Laboratoire d'aérologie - LA (LA) ; Université Paul Sabatier - Toulouse 3 (UPS) - Institut national des sciences de l'Univers (INSU - CNRS) - Observatoire Midi-Pyrénées (OMP) - Centre National de la Recherche Scientifique (CNRS) - Université Paul Sabatier - Toulouse 3 (UPS) - Institut national des sciences de l'Univers (INSU - CNRS) - Observatoire Midi-Pyrénées (OMP) - Centre National de la Recherche Scientifique (CNRS) Institut de Recherche d'Hydro-Québec [Varennes] (IREQ)
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Diversité des termites xylophages en Guyane française : Influence de l’attractivité de l’essence de bois, de la saison et du milieu ; Diversity of termites xylophagous in french Guiana. Atractivity influence, with wood species, with saisonality and with environment.
Auteur(s) : Martin, Jean-Michel
Auteurs secondaires : Antilles-Guyane Dejean, Alain
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Do tree species characteristics influence soil respiration in tropical forests? A test based on 16 tree species planted in monospecific plots
Auteur(s) : Brechet, Laetitia Ponton, Stéphane Roy, Jacques Freycon, Vincent Couteaux, Marie-Madeleine Bonal, Damien Epron, Daniel
Auteurs secondaires : Ecologie des forêts de Guyane (ECOFOG) ; Centre de Coopération Internationale en Recherche Agronomique pour le Développement (CIRAD) - Institut National de la Recherche Agronomique (INRA) - Université des Antilles et de la Guyane (UAG) - AgroParisTech - Centre National de la Recherche Scientifique (CNRS) UMR Centre d'Ecologie Fonctionnelle et Evolutive ; Centre National de la Recherche Scientifique (CNRS) UPR Dynamique des Fôrets Naturelles ; Centre de Coopération Internationale en Recherche Agronomique pour le Développement Ecologie et Ecophysiologie Forestières (EEF) ; Institut National de la Recherche Agronomique (INRA) - Université de Lorraine (UL)
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La dynamique des pêches côtières du pays bigouden
Auteur(s) : Charuau, Anatole
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Relationship between the wreck of small-scale fishing equipment and ghost fishing in Guadeloupe (French West Indies) with palliative proposals for a better long-lasting management of biodiversity
Auteur(s) : Bouchereau, Jean-Luc Wuttichaï, Boussaree
Auteurs secondaires : Systématique, adaptation, évolution (SAE) ; Université Pierre et Marie Curie - Paris 6 (UPMC) - Centre National de la Recherche Scientifique (CNRS)
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Coupling physical and biogeochemical processes in the Rio de la Plata plume
Auteur(s) : Huret, Martin Dadou, Isabelle Dumas, Franck Lazure, Pascal Garcon, Véronique
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Les résidences secondaires sur la côte Pacifique Sud du Nicaragua : une stratégie de développent et ses conséquences
Auteur(s) : Matteucci, Xavier Beyer, Matthias
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The Challenge of Performing Aerobic. Exercise in Tropical Environments:Applied Knowledge and Perspectives
Auteur(s) : Hue, Olivier
Auteurs secondaires : Adaptations au Climat Tropical, Exercice et Santé (ACTES) ; Université des Antilles et de la Guyane (UAG)
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Environmental factors predict community functional composition in Amazonian forests
Auteur(s) : FORTUNEL, Claire Paine, C. E. Timothy Fine, Paul V. A. Kraft, Nathan J. B. Baraloto, Christopher
Auteurs secondaires : Ecologie des forêts de Guyane (ECOFOG) ; Centre de Coopération Internationale en Recherche Agronomique pour le Développement (CIRAD) - Institut National de la Recherche Agronomique (INRA) - Université des Antilles et de la Guyane (UAG) - AgroParisTech - Centre National de la Recherche Scientifique (CNRS) Biological and Environmental Sciences ; University of Stirling Department of Integrative Biology ; University of California [Berkeley] Department of Biology ; University of Maryland [College Park] Department of Biology ; University of Florida [Gainesville] NSF [DEB-0743103/0743800]; INRA Package grant; 'Investissement d'Avenir' grant [ANR-10-LABX-0025]
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