Benthic Fauna and Sediment Chemistry Survey - East Cowes

Project Brief

Carcinus Limited (Carcinus) was commissioned to provide specialist marine survey and reporting services in support of a new vessel lay-by berth within the entrance to the River Medina, East Cowes. The potential environmental effects originating from the proposed development were identified and screened prior to survey. Following this process, the recommendation received from the relevant Statutory Nature Conservation Bodies (SNCB’s) called for a sediment sampling programme, consisting of a subtidal benthic ecology and sediment chemistry analysis for the purposes of informing a marine licence application for dredge spoil disposal and ecological assessment.

Benthic Ecology Survey, Sediment Chemistry and Consultancy

Carcinus delivered survey operations, analysis and reporting in support of the project to establish the physico-chemical and biological properties of the sediment at key locations within and around the proposed development. Seabed samples were collected using a 0.1 m2 day grab from a purpose-built coastal survey vessel to allow characterisation of the benthic fauna and sediment characteristics and chemistry across a range of water depths and habitats. Sampling locations were selected using a pseudo-randomly methodology, informed by existing site data and advice from SNCB's.

Upon completion of survey operations, fauna samples were delivered to our associates at Marine Invertebrate Ecological Services (MIES) Limited for taxonomic analysis. The marine biology laboratory operated by MIES is a full-time participant in the UK National Marine Biological Association Quality Control Scheme (NMBAQC) for the quality performance monitoring of UK labs involved in macro fauna identification. Sediment chemistry analysis was undertaken by an MMO validated laboratory for the relevant determinant suites.

Data were analysed using univariate and multivariate statistical methods and a detailed technical report produced, outlining the results of the study.

More information about our marine ecology services

Find out more about our services on our 'Marine Ecology Surveys' page or download our 'Marine Benthic Ecology Capability Statement' below:

If you require more information regarding our marine ecology survey capabilities and consultancy services, please contact us.