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| Registros recuperados: 200 | |
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| Ioakeimidis, C.; Zeri, C.; Kaberi, H.; Galatchi, M.; Antoniadis, K.; Streftaris, N.; Galgani, Francois; Papathanassiou, E.; Papatheodorou, G.. |
| In the present work, abundance, spatial distribution and qualitative composition, of benthic marine litter, were investigated in five study areas from the Eastern Mediterranean and Black Seas (Saronikos, Patras and Echinades Gulfs; Limassol Gulf; Constanta Bay). Surveys were performed using the monitoring protocol proposed by the Technical Group for Marine Litter. Densities ranged from 24 items/km(2) to 1211 items/km(2), with the Saronikos Gulf being the most affected area. Plastics were predominant in all study areas ranging from 45.2% to 95%. Metals and Glass/Ceramics reached maximum values of 21.9% and of 22.4%. The size distribution of litter items showed that >= 50% fall into medium size categories (10 x 10 cm, 20 x 20 cm) along with an elevated... |
| Tipo: Text |
Palavras-chave: Litter; Benthic; Pollution; Eastern Mediterranean; Black Sea. |
| Ano: 2014 |
URL: https://archimer.ifremer.fr/doc/00251/36179/34730.pdf |
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| Gomez-gesteira, M; Montero, P; Prego, R; Taboada, Jj; Leitao, P; Ruiz-villarreal, M; Neves, R; Perez-villar, V. |
| A two-dimensional hydrodynamic model coupled to a particle tracking model is applied to study the dispersion processes and residence time in two Galician rias (A Coruna and Vigo, NW Spain) under summer conditions. In A Coruna a long residence time was found in the harbour area due to the existence of a dock, and a short one in the river area. On the contrary, in Vigo, the residence time is smaller in the harbour area, due to the Rande Strait, beyond which the river effect is negligible. |
| Tipo: Text |
Palavras-chave: Modèle bidimensionnel; Traceur passif; Circulation résiduelle; Pollution; Rias de Galice; Two-dimensional model; Passive tracers; Residual currents; Pollution; Galician rias. |
| Ano: 1999 |
URL: http://archimer.ifremer.fr/doc/00325/43618/43312.pdf |
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| Geoffroy, Benjamain; Alfonso, Sebastien; Sadoul, Bastien; Blumstein, Daniel T. |
| Humans currently occupy all continents and by doing so, modify the environment and create novel threats to many species; a phenomenon known as human-induced rapid environmental changes (HIREC). These growing anthropogenic disturbances represent major and relatively new environmental challenges for many animals, and invariably alter selection on traits adapted to previous environments. Those species that survive often have moved from their original habitat or modified their phenotype through plasticity or genetic evolution. Based on the most recent advances in this research area, we predict that wild individuals with highly plastic capacities, relatively high basal stress level, and that are generally shy—in other words, individuals displaying a reactive... |
| Tipo: Text |
Palavras-chave: Coping style; Antipredator behavior; Evolution; Stress physiology; Ecology; Predation; Urbanization; Pollution. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00664/77564/79528.pdf |
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| Forget, Joelle; Beliaeff, Benoit; Bocquene, Gilles. |
| From April 1997 to June 1998, 14 measurements of acetylcholinesterase (AChE) enzymatic activity were performed with the copepod, Tigriopus brevicornis, collected at five stations in the Vilaine River estuary (South Brittany, France). Simultaneously, four chemical analyses of triazines and one analysis of total pesticides in water were undertaken. AChE activity levels in T brevicornis were compared to the levels measured at a reference site not exposed to effluents from Vilaine River. Results reveal significant differences between AChE activity levels depending on location of stations in the plume of the river with an increasing gradient of activity from the upstream to the downstream stations, thus indicating that neurotoxic contaminants are mainly brought... |
| Tipo: Text |
Palavras-chave: Monitoring; Estuary; Pollution; Pesticides; Tigriopus brevicornis; Acetylcholinesterase activity. |
| Ano: 2003 |
URL: http://archimer.ifremer.fr/doc/2003/publication-737.pdf |
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| Tsangaris, Catherine; Hatzianestis, Ioannis; Catsiki, Vassiliki-angelique; Kormas, Konstantinos Ar; Strogyloudi, Evangelia; Neofitou, Christos; Andral, Bruno; Galgani, Francois. |
| An integrated approach using biomarkers and contaminant levels in mussels Mytilus galloprovincialis L was employed to assess chemical contamination in Greek coastal waters within the framework of the MYTIMED program. Biomarkers (metallothioneins, glutathione S-transferase, catalase, acetylcholinesterase and RNA:DNA ratio) have been previously described in mussels caged at 14 sites in coastal areas influenced by different types of anthropogenic activities. This study applied a biomarker index, the Integrated Biomarker Response (IBR) to summarize biomarker responses and relate stress levels to concentrations of organochlorine compounds (PCBs, DDTs), polycyclic aromatic hydrocarbons (PAHs), and metals (Cu, Ni, Fe, Zn) measured in the mussel tissues. The IBR... |
| Tipo: Text |
Palavras-chave: Pollution; Biomarkers; Monitoring; Mussel caging; Mytilus galloprovincialis; Mediterranean Sea. |
| Ano: 2011 |
URL: http://archimer.ifremer.fr/doc/00059/17033/14718.pdf |
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| Viatte, Camille; Clerbaux, Cathy; Maes, Christophe; Daniel, Pierre; Garello, René; Safieddine, Sarah; Ardhuin, Fabrice. |
| Air pollution and sea pollution are both impacting human health and all the natural environments on Earth. These complex interactions in the biosphere are becoming better known and understood. Major progress has been made in recent past years for understanding their societal and environmental impacts, thanks to remote sensors placed aboard satellites. This paper describes the state of the art of what is known about air pollution and focuses on specific aspects of marine pollution, which all benefit from the improved knowledge of the small-scale eddy field in the oceans. Examples of recent findings are shown, based on the global observing system (both remote and in situ) with standardized protocols for monitoring emerging environmental threats at the global... |
| Tipo: Text |
Palavras-chave: Pollution; Atmosphere; Ocean; Space-borne instrument. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00635/74687/74596.pdf |
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| Fracácio,Renata; Verani,Nelsy Fenerich; Espíndola,Evaldo Luiz Gaeta; Rocha,Odete; Rigolin-Sá,Odila; Andrade,Cássio Arilson. |
| The objective of this work was to assess the toxicity of sediment samples from six cascade reservoirs in Tietê river system, in São Paulo State, Brazil, through chronic-partial toxicity bioassays with Danio rerio larvae as test-organisms. Histology of gills and biometric measurements were used to determine the existence of toxicity problems. The alterations on gill morphology here detected were considered of first stage (hyperplasia, lamellar junction and excess of mucous cells) in the first reservoirs and very slight in the last ones. The biometric analysis pointed to inadequate conditions for the growth of the test-organisms when exposed to the sediment of the rivers and upstream reservoirs and also indicated an improvement of environmental conditions... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Gill morphology; Sediment toxicity; Danio rerio; Tietê reservoirs; Pollution. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132003000400023 |
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| Tournadre, Jean. |
| Marine ecosystems are under increasing anthropogenic pressures from marine and terrestrial activities. Ship traffic, the major cause of change in the open ocean, and its temporal evolution are still largely unknown because of lack of data. Altimeter data provide a new powerful tool to detect and monitor the ship traffic through a method of analysis of echo waveform. The archive of seven altimeter missions has been processed to create a two decade database of ship locations. The estimated annual density maps compare well with the ones obtained from Automatic Identification System. The ship traffic analysis shows a global fourfold growth between 1992 and 2012, the largest increase being observed in the Indian Ocean and the Chinese seas reflecting the world... |
| Tipo: Text |
Palavras-chave: Altimetry; Ship traffic; Pollution; Anthropogenic pressure. |
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00229/34039/32432.pdf |
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| Sánchez-Rodríguez,Martha A.; Retana-Ugalde,Raquel; Ruiz-Ramos,Mirna; Mendoza-Núñez,Víctor Manuel. |
| The aging is one of the factors that cause decrease in the antioxidant capacity. Likewise, it has been proposed that subjects exposed permanently to air pollution develop deficient antioxidant capacity to oxidative stress (OxS). This study aimed to analyze the antioxidant capacity against elevated lipid peroxides in healthy elderly of Mexico City. 105 adults (44 ± 10.8 years) and 126 elderly subjects were studied (68 ± 7.1 years); residents of Mexico City (clinically healthy, non-smokers, non-vitamin supplement takers) who had lived in the city for >10 years. Plasma lipoperoxides (LPO), total antioxidant status (TAS), the activity of red blood cells superoxide dismutase (SOD), and plasma glutathione peroxidase (GPx), were studied in all subjects. LPO... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Adaptation to oxidative stress; Total antioxidant status; Elderly people; Pollution; Superoxide dismutase; Glutathione peroxidase. |
| Ano: 2004 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0325-29572004000200007 |
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| Giuliani, S.; Triulz, C.; Vaghi, M.. |
| In the framework of the Italian National Research Program in Antarctica (PNRA), the Laboratory of Radioecology of the University of Parma developed from 1987 several researches on terrestrial and marine samples. At first the prin-cipal aim was the study of 90Sr, 137Cs, 238Pu, 239+240Pu and 241Am concentrations in samples of soil, ice, seawater and biota collected near the Italian Antarctic Base (Ross Sea, Terra Nova Bay). |
| Tipo: Journal Contribution |
Palavras-chave: Antarctica; Pollution; 137Cs; 239+240Pu; 238Pu and 241Am; Антарктика; Загрязнение Pollution Pollution http://aims.fao.org/aos/agrovoc/c_6077. |
| Ano: 2003 |
URL: http://repository.ibss.org.ua/dspace/handle/99011/39 |
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| Registros recuperados: 200 | |
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