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| Chesil Beach and Portland Marine Monitoring Project | |
|---|---|
| Name | Chesil Beach and Portland Marine Monitoring Project |
| Caption | Chesil Beach and Portland near Portland Bill |
| Location | Dorset, England |
| Coordinates | 50.5760°N 2.4560°W |
| Established | 2009 |
| Type | Marine monitoring and coastal geomorphology |
Chesil Beach and Portland Marine Monitoring Project The Chesil Beach and Portland Marine Monitoring Project is a long-term field and data initiative focused on coastal morphodynamics, benthic habitats, and fisheries-related ecosystems around Chesil Beach and the Isle of Portland. It links applied surveying, ecological assessment, and policy-relevant reporting to inform Dorset coastal management, Portland Bill navigation safety, and regional conservation planning such as within the Jurassic Coast World Heritage Site and Portland Harbour marine uses.
The project combines repeated hydrographic surveying, seabed sampling, visual census, and species monitoring to produce time-series datasets used by Natural England, Marine Management Organisation, Environment Agency (England), and local authorities including Dorset Council. Operating around the Isle of Portland promontory, Portland Harbour, Chesil Beach, and adjacent shelf areas, it addresses sediment transport, shoreface evolution, and habitats like seagrass meadows, maerl beds, and boulder reef communities. Collaborating with research institutions such as the University of Plymouth, Plymouth Marine Laboratory, University of Portsmouth, University of Bournemouth, and University of Southampton, the project informs statutory designations including Special Area of Conservations and Site of Special Scientific Interests.
Initiated in the late 2000s, the project evolved from local monitoring schemes linked to historical surveys by the Admiralty and early scientific work by the British Geological Survey and the National Oceanography Centre. Early partners included Portland Port, Weymouth and Portland Borough Council, and community groups such as the Portland Museum volunteers. It expanded after post-storm reassessments following incidents like the 2014 winter storms that influenced Coastal erosion responses and infrastructure assessments at Chesil Cove and Ferrybridge. Over time the project integrated modern platforms from multibeam echosounder surveys to autonomous underwater vehicles developed with help from National Marine Aquarium collaborations and technology from Scottish Association for Marine Science suppliers.
Primary objectives are to quantify shoreline change, sediment budgets, habitat distribution, and species abundance to support management by Dorset Coast Forum stakeholders and statutory agencies like Historic England where cultural heritage at risk exists. Methodologies include repeat topographic beach surveys referenced to Ordnance Survey benchmarks, multibeam bathymetry tied to GNSS control, grab sampling for benthos with taxonomic validation against collections at the Natural History Museum, underwater video transects, acoustic backscatter classification, and fisheries-independent trawl and longline surveys coordinated with Centre for Environment, Fisheries and Aquaculture Science protocols. Data QA/QC aligns with standards used by the UK Hydrographic Office and metadata practices from the British Antarctic Survey.
The study area encompasses the 18-kilometre shingle barrier of Chesil Beach, the tidal waters around the Isle of Portland, the inner shelf toward Portland Bill and the Weymouth Bay corridor. Habitats monitored include intertidal shingle, sublittoral sand and gravel, mixed substrata supporting kelp and fucoid assemblages, and sponge and anemone communities recorded near Portland Ledge. Key species surveyed include commercially relevant stocks such as bass (Dicentrarchus labrax), cod (Gadus morhua), and shellfish like common mussel and queen scallop as well as conservation-priority taxa such as cuckoo wrasse, seahorse species, and nesting birds on adjacent cliffs recorded with input from the RSPB.
Results published as annual reports, interactive maps, and GIS layers show measurable cross-shore sediment transfer, episodic overwash events tied to storms, and shifts in seabed granulometry correlated with anthropogenic pressures like Portland Port dredging and recreational boating. Data products include time-series bathymetry grids, benthic habitat maps compliant with European Nature Information System classifications, species abundance indices supporting Marine Conservation Zone assessments, and coastal vulnerability models used in Shoreline Management Plan updates. Peer-reviewed outputs have appeared in journals and informed risk assessments for structures such as the Portland Breakwater.
The project has directly contributed evidence used by Natural England and the Marine Management Organisation to advise on protections and activities within Portland Harbour and adjacent marine conservation areas, aiding designation advice for MCZs and management measures for recreational fisheries. Findings have guided adaptive responses to erosion at Chesil, informed clam and crab fisheries management used by local processors, and supported mitigation planning for infrastructure projects proposed by Portland Port and transport agencies including Highways England where coastal routes are affected.
Community engagement includes citizen science initiatives run with partners like the Swanage Museum and Heritage Centre, volunteer beach cleans coordinated with Surfers Against Sewage, and educational workshops with schools linked to the Dorset Wildlife Trust and Field Studies Council at venues such as the Jurassic Coast Centre. Public open days and data sharing portals facilitate access for local stakeholders including fishermen, tourism operators on the Isle of Portland, and heritage groups tied to Portland Castle.
Funding and in-kind support have come from a mix of sources including regional funds administered by Dorset Local Enterprise Partnership, research grants from the Natural Environment Research Council, collaborative contracts with Portland Port Authority, and EU-era marine funding mechanisms formerly administered through Interreg programmes. Core scientific partnerships include the Plymouth University Marine Institute, Portland Harbour Authority, Dorset Wildlife Trust, and national bodies such as Natural England and the Environment Agency (England).
Category:Maritime environmental monitoring