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    These data describe counts of macrobenthic infauna (with associated station metadata) taken from sediment samples collected at sites in the Tyne, Thames and Shoreham, UK from 2000 to 2006. For selected samples, wet biomass data is also included per taxon. The samples from the Shoreham site were collected across an aggregate extraction area over 4 years with the aim to test several habitat mapping techniques by documenting the presence of different faunal levels across the area. The samples collected at the Tyne and Thames were initiated at former sewage sludge disposal sites. Cefas conducted annual sampling in these areas during and post cessation of sewage disposal after January 1999 to monitor the benthic macrofauna community.

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    Participation into annual multidisciplinary pelagic surveys of the Western Channel and Celtic Sea waters as part of project Poseidon. The aims of the Poseidon project is to estimate the biomass of-, and gain insight into the population of the small pelagic fish community using trawl and acoustic. Continuous recording of phytoplankton groups was coupled using automated flow cytometry (CytoSense), together with other measurements.

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    To carry out an integrated monitoring survey of the Celtic Sea, south-western approaches and the western Channel using a random stratified survey design for the purposes of providing fish stock assessment data and the collection of associated ecosystem information. Biomass and diversity of phytoplankton communities were determined using FerryBox and on line flow cytometer at 4 meters. A new R-shiny application (https://openscience.cefas.co.uk/phytoops_tool/) displays biological, physical and biogeochemical parameters in different UK marine coastal areas in 2016 and 2017.

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    This study contributes with information on: i) initial colonization and succession of macrobenthic communities over a large scale and real world data; ii) macrobenthic data into existing successional models and iii) resilience of benthic communities following the cessation of sewage sludge disposal. This information has the potential to contribute to an effective management of the marine communities in the North Sea.

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    This study presents the results of a trial assessment based on a combination of sampling techniques at a dredged material disposal site located off the North East coast of the UK, over 2001 to 2004. The site was surveyed with a high-resolution sidescan sonar system producing a mosaic with 100% coverage of the survey area. Benthic communities and sediments were ground-truthed using a Hamon grab with a video camera. Additionally, the area was also sampled in 2003 with a Sediment Profile Imaging (SPI) camera, which complemented other techniques by providing in situ information on sediment quality, and biogenic activities. An assessment is made of the benefits of combining the results from conventional methods, principally using grab samples, with those from acoustic techniques and optical imaging devices to determine seafloor and macrobenthic conditions. This information has the potential to contribute to the enhancement of routine monitoring programmes within UK waters.

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    Data resulted from a series of microcosm experiments designed to examine the differential response of estuarine nematode assemblages

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    Data are the result of a laboratory experiment, designed to investigate the effects of the degree of contamination and the role of burial associated with the deposition of dredged material on meiobenthic nematodes.

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    The main objective of the data derived from this microcosm experiment was to assess the ability of nematodes to vertically migrate into native muddy and non-native sandy sediment deposited in different amounts and frequencies.

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    This work is an statistical analysis with univariate indeces to assess the differt types of resposnes over two biological time-series across two disposal sites.