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Mulder, J.P.M.; Louters, T.; Hallie, F.; Postma, R.; Craeymeersch, J.A.; Hamerlynck, O.. |
The geomorphological and ecological response of the ebb tidal deltas of the SW Netherlands to implementation of the Delta Project during the last decades, has been the subject of an integrated research project. General observed geomorphological trends are: erosion of the delta fronts and of the relic tidal bars in the landward parts of the deltas, and sedimentation in the tidal channels and in longshore bars at the edges of the deltas. Ecologically, a general trend towards richer benthic fauna communities is observable. The integrated approach in coastal research combining geomorphological analysis of field data with numerical modelling, and integrating hydraulic, geomorphological, sedimentological and biological data, has appeared very promising. Progress... |
Tipo: Info:eu-repo/semantics/article |
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Ano: 1991 |
URL: http://www.vliz.be/imisdocs/publications/300799.pdf |
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Piet, G.J.; Rijnsdorp, A.D.; Bergman, M.J.N.; van Santbrink, J.W.; Craeymeersch, J.A.; Buijs, J.. |
Data on density of benthos species and on direct mortality caused by the passing of a beam trawl, together with fishing effort data for the Dutch beam-trawl fleet, were used to evaluate the annual population mortality caused by beam trawling in the Dutch sector of the North Sea. The effects of using environmental strata, instead of ICES rectangles for density distributions, and of using higher-resolution fishing-effort data on the population mortality estimates of 21 infauna and epifauna species were investigated. Variation in species abundance was markedly smaller based on sediment-depth strata than based on ICES rectangles, and the resulting population mortality estimates differed significantly among species (ratio ranged from 0.3 to 1.6) depending on... |
Tipo: Info:eu-repo/semantics/article |
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Ano: 2000 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=6399 |
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Belgrano, A.; Vincx, M.; Dewarumez, J.-M.; Richard, A.; Craeymeersch, J.A.; Heip, C.H.R.. |
The density distribution of meroplanktonic larvae is compared with the density distribution of adults in the benthos, at five coastal stations in the Southern Bight of the North Sea (<i>Abra alba</i> community). Plankton communities were sampled during one tidal cycle, along a buoy traject or at a fixed point; southern and northern locations, 250 m from each central sampling point, have been investigated too. Benthos samples were taken only at the central points of this traject. Meroplankton consisted of polychaete larvae (9 families) and bivalve and echinoderm larvae. The highest density values of these larvae (6,400 ind.10.25 m<sup>2</sup>) are found on the southern sites of each traject (closest to the coastline). The highest... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Meiobenthos Meroplankton Recruitment ANE; North Sea; Southern Bight. |
Ano: 1990 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=7114 |
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