Consulta: subjectFacets:"Gibraltar"
Registros recuperados: 3
Data/hora: 27/07/2024 02:08:15

Oceanic mercury concentrations on both sides of the Strait of Gibraltar decreased between 1989 and 2012
Provedor de dados: 5
Autores: Cossa, Daniel; Knoery, Joel; Boye, Marie; Marusczak, Nicolas; Thomas, Bastien; Courau, Philippe; Sprovieri, Francesca.
Mercury (Hg) is a toxic metal that threatens the health of aquatic ecosystems and fish consumers. Its natural cycle has been deeply perturbed by Anthropogenic Hg emissions have deeply perturbed its natural cycle, especially since the start of the Industrial Revolution circa 1850 CE. Anthropogenic Hg emissions from North America and Europe have decreased by a factor of two in the last decades following the implementation of strict regulations. The response of North Atlantic Ocean and Mediterranean waters to this decrease remains poorly documented by field observations. A comparison of results obtained between 1989 and 2012 shows a significant decrease of Hg concentrations in waters on both sides of the Strait of Gibraltar. West of Gibraltar, the Hg decrease...
Tipo: Text
Palavras-chave: Mercury; Mediterranean Sea; Atlantic Ocean; Gibraltar.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00593/70540/68705.pdf

Bio-economic management strategy evaluation of deepwater stocks using the FLBEIA model
Provedor de dados: 5
Autores: Garcia, Dorleta; Urtizberea, Agurtzane; Diez, Guzman; Gil, Juan; Marchal, Paul.
Deepwater fish are characterized by long lifespans, late maturity and low productivity. This implies slow recovery from low biomass levels and it is, therefore, important to manage these stocks correctly to avoid overfishing. However, these stocks are generally data poor, which it makes difficult to apply quantitative assessment models on which to base their management. The management strategy evaluation (MSE) approach consists in evaluating the performance of management strategies by simulation before their implementation. In the evaluation, the main sources of uncertainty in a fishery system and its management process should be taken into account in order to find robust management strategies. Thus, the MSE approach is relevant to the management of...
Tipo: Text
Palavras-chave: Bio-economic modelling; Deep-sea fisheries; Harvest control rules; Management strategy evaluation; Norway; Bay of Biscay; Gibraltar; Atlantic Ocean.
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00176/28760/27231.pdf

Enhanced Mediterranean-Atlantic exchange during Atlantic freshening phases
Provedor de dados: 5
Autores: Rogerson, M.; Colmenero-hidalgo, E.; Levine, R. C.; Rohling, E. J.; Voelker, A. H. L.; Bigg, G. R.; Schoenfeld, J.; Cacho, I.; Sierro, F. J.; Lowemark, L.; Reguera, M. I.; De Abreu, L.; Garrick, K.
The Atlantic-Mediterranean exchange of water at Gibraltar represents a significant heat and freshwater sink for the North Atlantic and is a major control on the heat, salt and freshwater budgets of the Mediterranean Sea. Consequently, an understanding of the response of the exchange system to external changes is vital to a full comprehension of the hydrographic responses in both ocean basins. Here, we use a synthesis of empirical (oxygen isotope, planktonic foraminiferal assemblage) and modeling (analytical and general circulation) approaches to investigate the response of the Gibraltar Exchange system to Atlantic freshening during Heinrich Stadials (HSs). HSs display relatively flat W-E surface hydrographic gradients more comparable to the Late Holocene...
Tipo: Text
Palavras-chave: Atlantic; Mediterranean; Gibraltar; Heinrich Event; Last Glacial Maximum; Mediterranean Outflow.
Ano: 2010
URL: https://archimer.ifremer.fr/doc/00231/34189/32775.pdf