Consulta: subjectFacets:"Chemical pollution"
Registros recuperados: 8
Data/hora: 07/06/2024 09:04:34

Planetary Boundaries:  Exploring the Safe Operating Space for Humanity
Provedor de dados: 7
Autores: Steffen, Will; Stockholm Resilience Centre, Stockholm University; Australian National University, Australia; will.steffen@anu.edu.au; Noone, Kevin; Stockholm Resilience Centre, Stockholm University; Department of Applied Environmental Science, Stockholm University; kevin.noone@stockholmresilience.su.se; Chapin, F. Stuart III; Institute of Arctic Biology, University of Alaska Fairbanks; fschapiniii@alaska.edu; Lambin, Eric; Department of Geography, University of Louvain; lambin@geog.ucl.ac.be; Lenton, Timothy M; School of Environmental Sciences, University of East Anglia; t.lenton@uea.ac.uk; Scheffer, Marten; Aquatic Ecology and Water Quality Management Group, Wageningen University; Marten.Scheffer@wur.nl; Folke, Carl; Stockholm Resilience Centre, Stockholm University; The Beijer Institute of Ecological Economics, Royal Swedish Academy of Sciences; carl.folke@beijer.kva.se; Schellnhuber, Hans Joachim; Potsdam Institute for Climate Impact Research; Environmental Change Institute and Tyndall Centre, Oxford University ; schellnhuber@pik-potsdam.de; de Wit, Cynthia A; Department of Applied Environmental Science, Stockholm University; cynthia.de.wit@itm.su.se; Hughes, Terry; ARC Centre of Excellence for Coral Reef Studies, James Cook University; terry.hughes@jcu.edu.au; van der Leeuw, Sander; School of Human Evolution and Social Change, Arizona State University; vanderle@asu.edu; Rodhe, Henning; Department of Meteorology, Stockholm University; rodhe@misu.su.se; Snyder, Peter K; Department of Soil, Water, and Climate, University of Minnesota; pksnyder@umn.edu; Costanza, Robert; Stockholm Resilience Centre, Stockholm University; Gund Institute for Ecological Economics, University of Vermont; rcostanz@uvm.edu; Svedin, Uno; Stockholm Resilience Centre, Stockholm University; uno.svedin@formas.se; Falkenmark, Malin; Stockholm Resilience Centre, Stockholm University; Stockholm International Water Institute; malin.falkenmark@siwi.org; Karlberg, Louise; Stockholm Resilience Centre, Stockholm University; Stockholm Environment Institute; louise.karlberg@stockholmresilience.su.se; Corell, Robert W; The H. John Heinz III Center for Science, Economics and the Environment ; Corell@heinzctr.org; Fabry, Victoria J; Department of Biological Sciences, California State University San Marcos; fabry@csusm.edu; Hansen, James; NASA Goddard Institute for Space Studies; James.E.Hansen@nasa.gov; Walker, Brian; Stockholm Resilience Centre, Stockholm University; CSIRO Sustainable Ecosystems; Brian.Walker@csiro.au; Liverman, Diana; Environmental Change Institute, School of Geography and the Environment; Institute of the Environment, University of Arizona ; diana.liverman@eci.ox.ac.uk; Richardson, Katherine; Earth System Science Centre, University of Copenhagen; kari@science.ku.dk; Crutzen, Paul; Max Planck Institute for Chemistry; air@mpch-mainz.mpg.de; Foley, Jonathan; Institute on the Environment, University of Minnesota; jfoley@umn.edu.
Anthropogenic pressures on the Earth System have reached a scale where abrupt global environmental change can no longer be excluded. We propose a new approach to global sustainability in which we define planetary boundaries within which we expect that humanity can operate safely. Transgressing one or more planetary boundaries may be deleterious or even catastrophic due to the risk of crossing thresholds that will trigger non-linear, abrupt environmental change within continental- to planetary-scale systems.   We have identified nine planetary boundaries and, drawing upon current scientific understanding, we propose quantifications for seven of them. These seven are climate change (CO2 concentration in the atmosphere &amp;#60;350 ppm and/or a maximum change...
Tipo: Peer-Reviewed Reports
Palavras-chave: Atmospheric aerosol loading; Biogeochemical nitrogen cycle; Biological diversity; Chemical pollution; Climate change; Earth; Global freshwater use; Land system change; Ocean acidification; Phosphorus cycle; Planetary boundaries; Stratospheric ozone; Sustainability.
Ano: 2009

Bilan des connaissances sur la qualité de l'eau dans la zone du polder conchylicole de Bouin - Projet LEAUPOLD
Provedor de dados: 5
Autores: Hatt, Philippe-jacques; Stavrakakis, Christophe; Buchet, Vincent; Dupuy, Beatrice.
Le polder conchylicole de Bouin (Vendée) est le principal bassin français de production de naissains d’huîtres creuses issus d’écloseries. Depuis 2007, et malgré l’installation de dispositifs de traitement de l’eau, des anomalies dans les élevages voire des mortalités affectent la production des écloseries et nurseries du secteur, ainsi que celle de microalgues en grand volume d'une entreprise spécialisée. Les observations des professionnels orientent la recherche de la cause de ces mortalités sur les contaminants chimiques, notamment les pesticides utilisés par l'agriculture, dont les exploitations du polder agricole, qui jouxtent le polder conchylicole. Comme l'ont montré de nombreux travaux, certains de ces produits altèrent la qualité de l’eau de mer...
Tipo: Text
Palavras-chave: Bassin Loire-Bretagne; Baie de Bourgneuf; Environnement; Conchyliculture; Qualité de l'eau; Pollution chimique; Bassin versant; Mortalité; Zone côtière; Loire-Bretagne district; Bourgneuf bay; Environment; Shellfish aquaculture; Water quality; Chemical pollution; Watershed; Mortality; Coastal zone.
Ano: 2015
URL: http://archimer.ifremer.fr/doc/00280/39165/37726.pdf

Comportement chimique et geochimique des elements a l'état de traces dans l'estuaire de la Seine: Synthese des discussions
Provedor de dados: 5
Autores: Guegueniat, P.
In the synthesis of discussions about the chemistry of the Seine Bay, the author after a note on natural references for metal concentrations, speaks about fluorides, nutrients, PCB, and metallic elements. In conclusion some suggestions about pollutants transfer towards ecosystems link, are enumerated.
Tipo: Text
Palavras-chave: PCB; Fluorides; Chemical pollution; Trace metals; Food webs; Bioaccumulation; Biogeochemical cycle; Trace elements.
Ano: 1985
URL: http://archimer.ifremer.fr/doc/1985/acte-1303.pdf

Diagnostic de la contamination chimique de la faune halieutique des littoraux des Antilles françaises. Campagnes 2008 en Martinique et en Guadeloupe
Provedor de dados: 5
Autores: Bertrand, Jacques; Abarnou, Alain; Bocquene, Gilles; Chiffoleau, Jean-francois; Reynal, Lionel.
During the years 1972-1993, kepone a persistent pesticide has been used in the banana fields of the French West Indies (Martinique and Guadeloupe) to content a weevil. A slow desorption of the molecule from soil induces its transfer to the sea through the rivers from leaching and erosion. This study intended to take stock on the contamination by kepone of the fishery species around the islands fifteen years after the kepone ban. Furthermore other chemical pollutants were sought in fish and shellfish around the Martinique island.   The results confirmed persistence of marine fauna contamination by kepone, mainly in the alluvium areas in front of polluted rivers. They shown also that this contamination may spread more widely but with fast decreasing through...
Tipo: Text
Palavras-chave: Antilles; Chlordécone; Pollution chimique; Environnement marin; Caribbean; Kepone; Chemical pollution; Marine environment.
Ano: 2009
URL: http://archimer.ifremer.fr/doc/2009/rapport-6896.pdf

Influence d'une pollution chimique par l'apatite sur les peuplements bacteriens du golfe d'Aqaba (Jordanie)
Provedor de dados: 5
Autores: Vacelet, E.
The influence of spillage of phosphates on the bacterial population and its activity was found to be not significant (on total number) or significant but low (on the number of growing cells which was higher close to the loading area). Phosphate discharge resulted also in a significant increase of dividing cells and of enzymatic activity but its effects could be hardly separated from sewage effects. Neither solubilizing strains nor bacterial solubilization could be detected.
Tipo: Text
Palavras-chave: Bacteria; Apatite; Pollution effects; Phosphates; Chemical pollution.
Ano: 1984
URL: http://archimer.ifremer.fr/doc/1984/acte-1010.pdf

La pollution chimique marine. Quelles politiques pour une protection durable de l'océan et des mers côtières ?
Provedor de dados: 5
Autores: Marchand, Michel.
The coastal marine environment presents some specificity compared to other aquatic environments: it is both the receiving end of pollution on land and the most biologically rich marine area, where are developing many uses (fisheries and aquaculture, salt production, tourism, thalassotherapy). The coastal zone is therefore vulnerable to chronic chemical pollution and its protection requires research, monitoring and regulation. A dual strategy can be put into place: a preventive approach to avoid placing on the market of toxic substances to humans and the environment, and a retrospective approach based on public policies for the protection and restoration of degraded aquatic environments.
Tipo: Text
Palavras-chave: Regulation; Monitoring; Research; Chemical pollution; Marine environment; Réglementation; Surveillance; Recherche; Pollution chimique; Milieu marin.
Ano: 2008
URL: http://archimer.ifremer.fr/doc/2008/publication-6374.pdf

Investigation on possible chemical pollution of the BouGhraa lagoon south of Tunisia by chemical wastes
Provedor de dados: 20
Autores: Farhat, F.; Ben Aoun, Z.; Chouba, L.; Hadj Ali, M. S.
La mer de BouGhrara, un milieu quasi-lagunaire de cinquante milles hectares environ, a contribué d’une manière remarquable à la production halieutique Tunisienne jusqu’au 1992  4.786 tonnes, année à partir de laquelle cette production n’a cessé de décroître (1.118 tonnes en 2002). Par ailleurs le premier projet industriel d’aquaculture marine y a également vu le jour, atteignant une production aquacole en cages flottantes de 252 tonnes en 1990. Malheureusement cette activité a cessé en 1995, après une dizaine d’années et la société  qui assurait cette production a cessé ses activités et les quelques cages ont été déplacées de la lagune vers le bassin du port de Zarzis à la recherche de conditions environnementales meilleures. Plusieurs raisons ont été...
Tipo: Journal Contribution
Palavras-chave: Chemical pollution; Depletion; Eutrophication; Lagoon fisheries; Organic matter; Pollution effects; Salinity; Temperature; Waste disposal; Acidity.
Ano: 2007
URL: http://hdl.handle.net/1834/4249

Structure trophique des peuplements de  nématodes libres marins dans un milieu expérimentalement enrichi en cadmium et/ou en hydrocarbures (diesel)
Provedor de dados: 20
Autores: Mahmoudi, E.; Essid, N.; Beyrem, H.; Hedfi, A.; Boufahja, F.; Aissa, P.; Vitiello, P.
Une étude en microcosme a été entreprise pour examiner l’influence d’un métal lourd (le cadmium) et/ou du diesel sur la structure trophique d’une communauté de nématodes libres provenant de la lagune de Ghar El Melh (Tunisie). Trois doses en cadmium [faible : 0,54 mg Cd kg-1 (poids sec, ps), moyenne : 0,90 mg Cd kg-1 (ps) et forte : 1,40 mg Cd kg-1(ps)], une dose de diesel de 0,25 mg kg-1 (ps) et un mélange de cadmium et de diesel [1,40 mg Cd kg-1(ps) + 0,25 mg  kg-1 de diesel (ps)] ont été testées pour évaluer les effets de ces polluants après 90 jours d’exposition. Les résultats des analyses statistiques univariées n’ont montré aucune différence significative pour la plupart des indices des communautés traitées par rapport à l’assemblage témoin. Ainsi,...
Tipo: Journal Contribution
Palavras-chave: Nematoda; Cadmium; Chemical pollution; Heavy metals; Microcosms; Pollution effects; Trophic structure; Heavy metals; Cadmium; Http://aims.fao.org/aos/agrovoc/c_2223; Http://aims.fao.org/aos/agrovoc/c_1178.
Ano: 2005
URL: http://hdl.handle.net/1834/3740