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| Registros recuperados: 102 | |
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| Correa-Ramirez,Marco; Pacheco,Wilberto; Ricaurte-Villota,Constanza. |
| ABSTRACT To counteract the spread of the Covid-19 pandemic disease, the Colombian government decreed a quarantine period from March 24 to July 1, 2020, which forced the cessation of tourist activities and the closure of the main tourist destinations of the Colombian Caribbean: Santa Marta, Cartagena, and San Andrés. During this period, a significant increase in the environmental quality of these coastal zones was perceived. To quantify environmental changes in the coastal zone, the variation in chlorophyll concentration and total suspended solids observed by the Sentinel-3 satellite mission, 30 days before and after the start of the quarantine, was analyzed. The results showed a decrease in the concentration of chlorophyll (> 20 %) and suspended solids... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coastal zone; Environmental indices; Remote sensing; Environmental quality; Covid-19.. |
| Ano: 2021 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612021000200161 |
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| Santos,Isaac Rodrigues; Costa,Ronaldo Cataldo; Freitas,Ubiratan; Fillmann,Gilberto. |
| The hypothesis that effluents treated through activated sludge process cause changes in nutrient biogeochemistry of receiving water bodies was investigated in Vieira creek, southern Brazil. Dissolved oxygen, suspended matter, and pH did not vary among the sampling stations. Nutrient, biochemical oxygen demand, and conductivity values were significantly higher downstream from the Wastewater Treatment Plant (WWTP) effluents. Further downstream, nitrate concentrations were higher due to ammonium nitrification, organic matter remineralization and/or the occurrence of unidentified sources. Per capita nutrient emission factors were estimated to be 0.16 kg P.yr-1 and 4.14 kg N.yr-1. Under pristine conditions, low N:P ratios were observed, which were significantly... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Activated sludge; Nutrients; Contamination; Coastal zone; Biogeochemistry; Eutrophication. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000100019 |
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| Evans, Louisa S.; The School of International Development, University of East Anglia; louisa.evans@jcu.edu.au; Brown, Katrina; The School of International Development, University of East Anglia; k.brown@uea.ac.uk; Allison, Edward H.; The WorldFish Center; e.allison@cgiar.org. |
| Adaptive governance can be conceptualized as distinct phases of: 1) understanding environmental change; 2) using this understanding to inform decision making; and 3) acting on decisions in a manner that sustains resilience of desirable system states. Using this analytical framework, we explore governance in practice in two case studies in Kenya, that reflect the “messiness” of contemporary coastal governance in many developing country contexts. Findings suggest that adaptive marine governance is unlikely to be a smooth process of learning, knowledge sharing, and responding. There are institutional, sociocultural, and political factors, past and present, that influence each phase of both local and state decision making. New local... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Coral reefs; Coastal zone; Fisheries; Governance; Inclusion; Knowledge; Participation. |
| Ano: 2011 |
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| 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 |
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| Gremare, A; Amouroux, Jm; Charles, F; Medernach, L; Jordana, E; Nozais, C; Vetion, G; Colomines, Jc. |
| Gross sedimentation rates (GSRs) were monitored together with meteorological data and the main biochemical characteristics of the collected material (i.e. organic content, C, N, total proteins, carbohydrates, lipids and available proteins) over a three year cycle at a shallow station (18 m) of the Bay of Banyuls, France. GSRs were between 0.26 (11/04/92) and 317.75 gDW m(-2) d(-1) (18/02/94). They followed an annual cycle with low and relatively constant values during spring and summer and high, variable Values during fall and winter. During the study GSRs correlated poorly (state of the sea, precipitation) or even non-significantly (wind speed) with the main meteorological parameters. GSRs correlated negatively with the organic content of the material... |
| Tipo: Text |
Palavras-chave: Matière organique particulaire; Qualité; Variabilité temporelle; Zone côtière; Particulate organic matter; Quality; Temporal variability; Coastal zone. |
| Ano: 1998 |
URL: http://archimer.ifremer.fr/doc/00325/43640/43226.pdf |
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| Henocque, Yves; Andral, Bruno. |
| The main content of the new European Water Framework Directive is presented. Within its river basin management approach, a special mention of coastal waters status is made. Among the issues at stake are the setting up of river basin management plans, including coastal waters, and water quality assessment system leading to an harmonized definition of quality objectives and their appropriate indicators. The Rhone-Mediterranean-Corsica Water Master Plan, launched in 1996, is considered to be well fitted to this river basin approach and the necessary tools which go with it. It shows up how a river quality assessment system (SEQ) can be adapted to the coastal waters and how it can progressively lead to an efficient set of publishable environmental and... |
| Tipo: Text |
Palavras-chave: Indicators; Quality assessment; Coastal zone; River basin; Integrated management. |
| Ano: 2003 |
URL: http://archimer.ifremer.fr/doc/2003/publication-429.pdf |
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| Oursel, B.; Garnier, C.; Zebracki, Mathilde; Durrieu, G.; Pairaud, Ivane; Omanović, D.; Cossa, Daniel; Lucas, Yves. |
| Trace elements and organic carbon inputs to the Mediterranean sea from an urbanized area (Marseille city) were studied and characterized during flood events. Inputs were brought to the sea by two small coastal rivers whose waters were mixed together and also with treated wastewaters (TWW) just before discharge. The monitoring of the rivers during flood events showed the high temporal dynamics of water flow, suspended particulate matter (SPM), organic carbon and trace metals concentrations, typical of small coastal Mediterranean rivers and requiring an appropriate sampling strategy. Dissolved/particulate partition coefficient (log Kd) in rivers during floods remained quasi-constant for a given trace element, but differed from one element to another... |
| Tipo: Text |
Palavras-chave: WWTP; Metals contamination; Coastal zone; Flood events; Mediterranean Sea; Small rivers. |
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00206/31761/30171.pdf |
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| Registros recuperados: 102 | |
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