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Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.

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Recolonization dynamics in areas disturbed by bottom fishing gears Pranovi, F.; Giovanardi, O.; Franceschini, G. (1998). Recolonization dynamics in areas disturbed by bottom fishing gears. Hydrobiologia 375: 125-135. https://dx.doi.org/10.1023/A:1017056905625 In: Hydrobiologia. Springer: The Hague. ISSN 0018-8158; e-ISSN 1573-5117, meer Is gerelateerd aan: Pranovi, F.; Giovanardi, O.; Franceschini, G. (1998). Recolonization dynamics in areas disturbed by bottom fishing gears, in: Baden, S. et al. Recruitment, colonization, and physical-chemical forcing in marine biological systems: Proceedings of the 32nd European Marine Biology Symposium, held in Lysekil, Sweden, 16-22 August 1997. Developments in Hydrobiology, 132: pp. 125-135. https://dx.doi.org/10.1007/978-94-017-2864-5_11, meer

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Trefwoorden

Colonization Ecosystem disturbance Environmental impact Equipment > Fishery industry equipment > Fishing gear Perturbations Marien/Kust

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Auteurs		Top
Pranovi, F., meer Giovanardi, O. Franceschini, G.

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Abstract

Results of two investigations on the effects of disturbance on benthic communities in lagoon and coastal areas, caused by bottom fishing-gears (‘hydraulic dredge’ for clams and ‘rapido’, a kind of beam-trawl for soles and scallops employed in the Northern Adriatic sea), are given. Such gears, although characterised by different features and targets, have similar effects on the sea bottom: both produce deep furrows (7–13 cm for the ‘rapido’, up to 20 cm for the ‘hydraulic dredge’), thus affecting the texture of the bottom. In 1992 (’hydraulic dredge‘) and in 1995 (‘rapido’) two different research projects were carried out; samples of benthos were collected immediately after the passage of the gears and at fortnightly-intervals, in treated and control areas. This allowed study of the modifications of the macrobenthic communities and investigation of the short and medium-term (dredge: 60 days, ‘rapido’: 15 days) progression of the recolonization processes in the disturbed areas. These dynamics have been analysed by giving emphasis to the species and to their time-space fluctuations. It has been found that characteristically ‘non-opportunistic’ species can assume an opportunistic behaviour during the initial phase of the recolonization processes of the disturbed areas.

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