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| Registros recuperados: 12 | |
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| Lambert, Clement; Penaud, Aurelie; Vidal, Muriel; Klouch, Khadidja; Gregoire, Gwendoline; Ehrhold, Axel; Eynaud, Frederique; Schmidt, Sabine; Ragueneau, Olivier; Siano, Raffaele. |
| For the first time a very high resolution palynological study (mean resolution of 1 to 5 years) was carried out over the last 150 years in a French estuarine environment (Bay of Brest; NW France), allowing direct comparison between the evolution of landscapes, surface water, and human practices on Bay of Brest watersheds, through continental (especially pollen grains) and marine (phytoplanktonic microalgae: cysts of dinoflagellates or dinocysts) microfossils. Thanks to the small size of the watersheds and the close proximity of the depositional environment to the mainland, the Bay of Brest represents an ideal case study for palynological investigations. Palynological data were then compared to published palaeo-genetic analyses conducted on the same core... |
| Tipo: Text |
Palavras-chave: Pollen grains; Dinoflagellate cysts; Estuarine dynamics; River runoff; Climate variability. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00410/52110/52813.pdf |
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| Lambert, Clement; Vidal, Muriel; Penaud, Aurelie; Combourieu-nebout, Nathalie; Lebreton, Vincent; Ragueneau, Olivier; Gregoire, Gwendoline. |
| Modern palynological investigations (pollen and non-pollen palynomorphs) have been carried out for the first time in the entire Bay of Brest (BB; NW France), a semi-enclosed oceanic basin flooded during the Holocene that today is exposed to both marine (North Atlantic surface waters) and fluvial (Aulne and Elorn rivers) influences. Palynological analyses were conducted on 41 surface sediments collected in several mudded bays where low-energy conditions prevail, allowing for fine particle decantation, and also on 12 moss samples considered to be pollen rain collectors taken on the periphery of the BB. Furthermore, the BB allows a direct comparison between landscapes and fossilized pollen assemblages in sediments thanks to relatively small watersheds and... |
| Tipo: Text |
Palavras-chave: Pollen; Dinocyst; Surface sediment; Estuarine dynamics; Vegetation cover. |
| Ano: 2017 |
URL: https://archimer.ifremer.fr/doc/00382/49371/49784.pdf |
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| Traini, C.; Proust, J. -n.; Menier, D.; Mathew, M. J.. |
| Estuaries are coastal areas controlled by hydrodynamic factors such as sea-level changes, waves and tidal currents, and river discharge. This study focuses on the Vilaine Estuary which is strongly impacted by human activity after construction of Arzal dam in 1970. The purpose of this research is to differentiate the role of natural from anthropogenic factors on sediment dynamics within the Vilaine Estuary. We are proposing a hypothetical model based on the hydrodynamic modification and morpho-sedimentary development by analyzing the natural estuarine evolution and the impact of human alteration to the natural system by utilizing datasets including river discharge, tidal currents, winds and wave activities to further combine with photographic, bathymetric,... |
| Tipo: Text |
Palavras-chave: Estuaries; Man-induced effects; Estuarine dynamics; Tidal flats; Salt marshes; Dams. |
| Ano: 2015 |
URL: https://archimer.ifremer.fr/doc/00639/75120/75516.pdf |
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| Tutivén, I.. |
| Con la ayuda del programa DINEST, se han calculado los transportes de sal en el estuario del Golfo de Guayaquil. Los resultados muestran que, el programa propuesto, es una herramienta muy útil como primera aproximación en el análisis de las condiciones de un estuario. Es así que se ha encontrado una bien definida influencia tanto de la marea como de la descarga del río. Se ha podido observar como estas cambian estacionalmente. la zona del río se extiende hasta las estación 7 (2°25'S) en la época húmeda, pero esto ocurre en el borde este del estuario solamente. La zona de mezcla avanza aguas arriba más allá de los 2°10'S en la época seca. Los resultados arrojan que existe una mayor dinámica de los transporte, en las estaciones 16 y 10 en la época seca y... |
| Tipo: Journal Contribution |
Palavras-chave: Estuarine dynamics; Salt advection; Estuaries; Estuaries; Http://aims.fao.org/aos/agrovoc/c_2673. |
| Ano: 2000 |
URL: http://hdl.handle.net/1834/2232 |
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| Braverman, M.. |
| This study encompasses the bio-physical interactions of whitemouth croaker (Micropogonias furnieri) early life stages living in La Plata estuary (Argentina-Uruguay, South America) to understand how they take advantage of the estuarine dynamics while traveling from spawning to nursery areas and undergoing ontogenetic and associated ecological changes. The analyses used include studies of spatio-temporal distribution length-dependent patterns; growth patterns looking for settlement marks in otoliths; and development related to metamorphosis and ontogenetic variations of the diet and trophic level. Samples and data come from vertically stratified samplings from 3 cruises (2005, 2006 and 2009). Distributional data also comes from an historic database. Results... |
| Tipo: Theses and Dissertations |
Palavras-chave: Fish larvae; Developmental stages; Metamorphosis; Larval settlement; Ontogeny; Saline fronts; Estuarine dynamics. |
| Ano: 2011 |
URL: http://hdl.handle.net/1834/4187 |
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| Registros recuperados: 12 | |
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