Habitat point records from 1988-89 NRA Orwell Estuary sublittoral survey

Published by:
Joint Nature Conservation Committee
Last updated:
04 February 2016
Topic:
Environment
Licence:
Open Government Licence

Summary

The main objective of this study was to assess the impact of the major discharge, Cliff Quay Sewage Treatment works on the benthic fauna of the Orwell Estuary. One Day Grab sample was taken at each of twenty eight sites. Sub samples of the sediment were taken for particle-size analysis and organic carbon content determination. The remainder of each sample was put through a 500 micron sieve and stored for later analysis. The results obtained indicated a gradual improvement of the subtidal fauna in a seaward direction. Four species assemblages were identified correlating with the distance down stream from the Orwell Bridge, the combined percentages of silt and clay and the percentage of organic carbon content. Sites in the upper estuary had low diversity, dominated by Tubificoides pseudogaster, Tubificoides swirencoides and Tharyx sp.. A faunistically impoverished area was observed around the Woolverstone Marina (sites 7-10), whereas an area of relatively high diversity was detected down stream of Collimer Point (sites 19-28).

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1988-89-NRA-Orwell-Estuary-sublittoral-survey.csv CSV 04 February 2016 Preview

Additional information

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Added to data.gov.uk
2018-05-17
Access contraints
no limitations
Harvest GUID
18032480-81f3-465c-b8ec-1dba40dd2c8c
Extent
Latitude: 52.02903522° to 51.96097324°
Longitude: 1.160733018° to 1.28769197°
Spatial reference system
Dataset reference date
2001-08-29 (publication)
Frequency of update
Responsible party
Digital and Data Solutions, JNCC (custodian)
ISO 19139 resource type
dataset
Metadata language
eng
Source Metadata
XML
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