2001-2003 Smith et al. Hastings Crepidula fornicata records

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Marine Environmental Data & Information Network
Last updated:
29 August 2019
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Summary

Four sand and gravel extraction areas in the North Sea and English Channel were studied over a three-year period to determine the effect of differing intensities of historic dredging activity on the nature of epifaunal recolonisation. Diversity and abundance of epifaunal assemblages were generally lower at intensively dredged treatments in comparison to those observed at nearby reference stations. Dominance of particular mobile epifaunal species was also recorded at the intensively dredged treatments which may be indicative of the epifaunal community response to disturbance. Total biomass was also lower within previously dredged treatments at two extraction areas but there was no evidence of a shift in biomass to smaller-sized specimens at any of the extraction areas as a consequence of dredging activity. Relationships between the observed biological patterns and derived hydrodynamic indices were also explored and indicate that the degree of natural physical disturbance plays an important role in influencing epifaunal community structure following the cessation of dredging activity.

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Additional information

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Added to data.gov.uk
2016-07-22
Access contraints
DASSH terms and conditions apply
Harvest GUID
0fa0f6fe-e342-49d8-9ee4-cd3d4b56a63a
Extent
Latitude: 50.8917° to 50.6346°
Longitude: 0.1415° to 0.9381°
Spatial reference system
urn:ogc:def:crs:EPSG::4326
Dataset reference date
2016-07-22 (publication)
Frequency of update
notPlanned
Responsible party
Data Archive for Seabed Species and Habitats (DASSH) (custodian); Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (originator)
ISO 19139 resource type
dataset
Metadata language
eng
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