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Ordenar por: RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 6
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Biodiversiteit op de Scheldeschorren OMA
Van den Bergh, E.; Huiskes, A.; Criel, B.; Meire, P..
The tidal marshes along the Scheldt estuary are rather unique in Europe, because they still exist along the complete salinity gradient. Key ecological factors for the vegetation are salinity, tidal regime and current and historical management. A general portrait with the most characterising plant species as well as a succession scheme are presented for salt, brackish and fresh tidal marshes separately, because they have few plant species and vegetation types in common. Tidal regime changes as a combined effect of sea level rise and the channel deepening in the Westerscheldt. This affects the marsh vegetation. Biodiversity patterns and factors affecting the distribution of species on the tidal marshes are discussed for plants, gastropodes, arthropodes and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Biodiversity; Salt marshes.
Ano: 2001 URL: http://www.vliz.be/imisdocs/publications/280700.pdf
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Développement d’outils de classement de qualité des eaux côtières et de transition pour la DCE. Elément de qualité « schorres ». ArchiMer
Rossi, Nadège.
Among the biological quality elements monitored under the WFD, salt marshes are still not assessed in France. To evaluate ways to develop an assessment tool for this biological quality element, methodologies already applied by other member states have been identified and analyzed. Despite a very thorough job in assessing the ecological status of salt marshes, no pressure-impact relationship has been demonstrated. In addition, the pressures identified are related to the hydromorphological characteristics. A study was conducted to study saltmarshes not as a biological quality element but as a hydromorphological quality element. It shows that with simple procedure, it is possible to follow the evolution of the total area of salt marshes which can give...
Tipo: Text Palavras-chave: Schorres; Directive Cadre sur l’Eau; État écologique; État hydromorphologique; Façade Manche- Atlantique; Salt marshes; Water Framework Directive; Ecological status; Hydromorphological status; Channel- Atlantic coast.
Ano: 2012 URL: http://archimer.ifremer.fr/doc/00398/50896/51668.pdf
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Early postlarval fish in the hyperbenthos of the Dutch Delta (south-west Netherlands) OMA
Beyst, B.; Mees, J.; Cattrijsse, A..
Early (post)larval fish constitute a significant part of the temporary hyperbenthos, i.e. of the fauna living in the lower reaches of the water column close to the substratum. Information on the densities and spatial and temporal variations of these stages, as well as on their lengths at the moment of occurrence, can be an important contribution to the knowledge of their dispersion, migrations and to the identification of possible bottlenecks in their recruitment. Therefore the hyperbenthos of the Voordelta, a shallow coastal zone in front of the Dutch Delta, as well as that of the subtidal channels and the intertidal brackish marsh creeks of the Westerschelde Estuary, was sampled monthly during one year by means of a sledge and a stow net. A total of 37...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Community composition; Deltas; Dominant species; Ecological distribution; Estuaries; Intertidal environment; Juveniles; Marine fish; Nursery grounds; Pleuronectes; Population density; Salt marshes; Sprattus sprattus; Wetlands; Zoobenthos; Clupea harengus; Dicentrarchus labrax [Bass]; Solea solea [Sole].
Ano: 1999 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3979
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Estudio de las comunidades del fitoplancton en los Ríos Daule, Guayas y Estero Salado OceanDocs
Tapia, M.E..
El objetivo del presente estudio es evaluar la biomasa, diversidad y relación del fitoplancton con las comunidades planctónicas estuarinas basándose en las condiciones ambientales durante la época de verano.
Tipo: Journal Contribution Palavras-chave: Phytoplankton; Distribution; Chlorophylls; Species diversity; Biomass; Rivers; Salt marshes; Environmental factors; Summer; Cell counters; Phytoplankton; Distribution; Biomass; Rivers; Environmental factors; Summer; Chlorophylls; Species diversity; Http://aims.fao.org/aos/agrovoc/c_13344; Http://aims.fao.org/aos/agrovoc/c_35773; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_6617; Http://aims.fao.org/aos/agrovoc/c_2594; Http://aims.fao.org/aos/agrovoc/c_7519; Http://aims.fao.org/aos/agrovoc/c_1577; Http://aims.fao.org/aos/agrovoc/c_33954.
Ano: 2002 URL: http://hdl.handle.net/1834/2292
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Interacciones ecológicas entre el cangrejo cavador Chasmagnathus granulata Dan(1851) y los espartillares de Spartina densiflora Brongniarti(1829), meiofauna asociada y características del sustrato en la laguna costera Mar Chiquita (Buenos Aires, Argentina) OceanDocs
Bortolus, A..
Universidad Nacional de Mar del Plata, Facultad de Ciencias Exactas y Naturales (Argentina)
Tipo: Theses and Dissertations Palavras-chave: Brackishwater ecology; Salt marshes; Sediment transport.
Ano: 2001 URL: http://hdl.handle.net/1834/2958
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Storage and export of mercury from a contaminated bay (Ria de Aveiro, Portugal) IPB - Escola Superior Agrária
Ramalhosa, Elsa; Monterroso, Paulo; Abreu, Sizenando; Pereira, Eduarda; Vale, Carlos; Duarte, Armando.
Mercury has been determined in water, suspended particulate matter (SPM) and sediments (solid fraction and pore water) collected in a heavily contaminated confined area (Largo do Laranjo) of the Ria de Aveiro. Mercury has been analysed in seabass (Dicentrarchus labrax) captured in several locations of the lagoon. The levels of mercury in water and SPM in the contaminated sampled places fluctuated daily with the tide (from 10 to 53 ng.dm-3 and 3.5 to 26 ug.g-1, respectively), indicating the export at the tidal rhythm. Bottom sediments exhibited higher concentrations, the maximum (48 ug.g-1) occurring near the anthropogenic source at depths corresponding to the periods of higher industrial discharges. Mercury concentrations in pore waters (max. 80 ng.dm-3)...
Tipo: Article Palavras-chave: Fishes; Mercury; Pore water; Salt marshes; Sediments.
Ano: 2001 URL: http://hdl.handle.net/10198/3899
Registros recuperados: 6
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