River Blackwater historic river corridor surveys

doi:10.15468/bpebj2

River Blackwater historic river corridor surveys

Citation

Essex Wildlife Trust Biological Records Centre (2023). River Blackwater historic river corridor surveys. Occurrence dataset https://doi.org/10.15468/bpebj2 accessed via GBIF.org on 2024-12-11.

Description

Former National Rivers Authority paper records for river corridor surveys of the River Blackwater in Essex, held by the Environment Agency and digitised by Essex Wildlife Trust on their behalf using funding from the NBN data capture initiative. Data consists mainly of botanical records from old recording cards, although there are some records for other taxa. Paper copies of these surveys are held by Essex Biodiversity Project, scanned copies of the site descriptions and sketch maps accompanying this data are held digitally by Essex Wildlife Trust Biological Records Centre.

Purpose

The original data was collected to provide summary information on Essex rivers for use by the National Rivers Authority. This dataset was subsequently digitised for use by the Environment Agency and to complement more recent river walkover surveys completed by Essex Wildlife Trust and Essex Biodiversity Project in partnership with the Environment Agency. for more details of recent surveys please see www.essexrivershub.org.uk

Sampling Description

Quality Control

This dataset has been fully validated and can be considered to be of good quality, although it has not been independently verified. Some taxonomic names may have been changed to reflect taxonomic revisions, but as this dataset is historic it should be checked against the original data source where recent taxonomic revisions may apply. This dataset has been checked using NBN Record Cleaner.

Method steps

Data was collected during field visits to Essex rivers using standardised botanical recording forms to record all plant species in each river section. This data is supplemented by sketch maps of each section and a summary report detailing any other species or field signs recorded. Data was digitised and validated by Essex Wildlife Trust Biological Records Centre on behalf of the Environment Agency using funding obtained via the NBN data capture initiative in 2014.

Taxonomic Coverages

Geographic Coverages

This dataset covers the River Blackwater in Essex from Braintree to Coggeshall, excluding tributaries. All records in this dataset are digitised to 6 figure OS grid references which are linked to coded river sections designated by the National Rivers Authority. The grid reference for each section refers to the downstream extent of each section. Users should refer to the digitised maps held by Essex Wildlife Trust Biological Records Centre to see the full extent of each section and therefore the full area from which the data was recorded.

Bibliographic Citations

Contacts

originator
Essex Wildlife Trust Biological Records Centre

metadata author
Essex Wildlife Trust Biological Records Centre

distributor
NBN Atlas
27 Old Gloucester St, Holborn
London
WC1N 3AX
London
GB
email: admin@nbnatlas.org

Dr Lorna Shaw
administrative point of contact
email: records@essexwt.org.uk