Over het archief
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.
Dit archief wordt uitgebouwd en beheerd volgens de principes van de Open Access Movement, en het daaruit ontstane Open Archives Initiative.
Basisinformatie over ‘Open Access to scholarly information'.
| one publication added to basket [106552] |
Impacts of chronic trawling disturbance on meiofaunal communities
Schratzberger, M.; Jennings, S. (2002). Impacts of chronic trawling disturbance on meiofaunal communities. Mar. Biol. (Berl.) 141: 991-1000
In: Marine Biology: International Journal on Life in Oceans and Coastal Waters. Springer: Heidelberg; Berlin. ISSN 0025-3162; e-ISSN 1432-1793, meer
|  |
| Trefwoorden |
Aquatic communities > Benthos > Meiobenthos
Catching methods > Net fishing > Trawling > Bottom trawling
Marien/Kust |
| Abstract |
Bottom trawling causes chronic and widespread disturbance to the seabed in shelf seas. Meiofauna may be impacted directly or indirectly by this disturbance, since the passage of trawls causes immediate mortality or displacement, changes sediment structure and geochemistry and affects the abundance of predators or competitors. Since meiofauna make a significantly greater contribution to benthic production than the larger macrofauna, there are compelling reasons to assess their response to chronic trawling disturbance. In this study, we determined the effects of trawling disturbance, season, sediment type and depth on the structure and diversity of nematode communities. Our analyses were based on comparisons betweennematode communities in three beam-trawl fishing areas in the central North Sea. These areas were trawled withmean frequencies of 1 (low disturbance), 4 (medium) and 6 (high) times year-1 respectively. Our analyses showed that trawling had a significant impact on the composition of nematode assemblages. In two sampling seasons, the number of species, diversity and species richness of the community were significantly lower in the area subject to high levels of trawling disturbance than in the areas subject to low or medium levels of disturbance. However, levels of disturbance at the ‘low’ and ‘medium’ sites may have been insufficient to cause marked longterm changes in community structure. Many of the observed changes were consistent with responses to other forms of physical disturbance. The extent to which the observed changes in community structure reflect changes in the production of the nematode community remains unknown, although overall abundance was not significantly affected by trawling disturbance. |
| Dataset |
- Schratzberger, M. (2000). Impacts of chronic trawling disturbance on nematode communities. Centre for Environment, Fisheries and Aquaculture Science (CEFAS), UK., meer
|
IMIS is ontwikkeld en wordt gehost door het VLIZ.
