Burry Inlet

Burry Inlet

Burry Inlet

Case Study A

Bird species included in model

Eurasian oystercatcher (Haematopus ostralegus)

Environmental issues simulated

Cold winter conditions increasing energy requirements, plus shellfishery management changing habitat area, habitat availability time, food quality.

Recommendations from modelling

Current shellfishing intensity does not reduce shorebird survival, but reduced fishable size or increased daily quota could.

More information

 West, A.D., Goss-Custard, J.D., McGrorty, S., Stillman, R.A., Durell, S., Stewart, B., Walker, P., Palmer, D.W. and Coates, P.J., 2003. The Burry shellfishery and oystercatchers: using a behaviour-based model to advise on shellfishery management policy. Marine Ecology Progress Series, 248: 279-292.

Stillman, R.A., Goss-Custard, J.D., West, A.D., Durell, S.E.A.L.V.D., McGrorty, S., Caldow, R.W.G., Norris, K.J., Johnstone, I.G., Ens, B.J., Van Der Meer, J. and Triplet, P., 2001. Predicting shorebird mortality and population size under different regimes of shellfishery management. Journal of Applied Ecology, 38(4): 857-868.

Funding

Countryside Council for Wales, Commission of the European Communities, Directorate-General for Fisheries, Natural Environment Research Council

Case Study B

Bird species included in model

Eurasian oystercatcher (Haematopus ostralegus)

Environmental issues simulated

Shellfishery management changing habitat area 

Recommendations from modelling

Shellfishery management needs to reserve up to 8 times more shellfish biomass than consumed by Oystercatcher populations.

More information

Goss-Custard, J.D., Stillman, R.A., West, A.D., Caldow, R.W.G., Triplet, P., le V dit Durell, S.E.A. and McGrorty, S., 2004. When enough is not enough: shorebirds and shellfishing. Proceedings of the Royal Society B: Biological Sciences, 271(1536): 233-237.

Funding

Centre for Ecology and Hydrology

Burry Inlet and Three Rivers

Burry Inlet and Three Rivers

Burry Inlet and Three Rivers

Multi-site model

Burry Inlet, Three Rivers

Bird species included in model

Eurasian oystercatcher (Haematopus ostralegus), Red knot (Calidris canutus)

Environmental issues simulated

Shellfishery management changing food density / quality

Recommendations from modelling

Shellfishery management needs to reserve 2-4 times more shellfish biomass than consumed by Oystercatcher populations.

More information

Stillman, R.A., 2008. Predicting the effect of shellfish stocks on the oystercatcher and knot populations of the Burry Inlet and Three Rivers. Countryside Council for Wales Marine Monitoring Report No. 65, Bournemouth University for the Countryside Council for Wales.

Stillman, R.A., Moore, J.J., Woolmer, A.P., Murphy, M.D., Walkere, P., Vanstaen, K.R., Palmer, D. and Sanderson, W.G., 2010. Assessing waterbird conservation objectives: An example for the Burry Inlet, UK. Biological Conservation, 143(11): 2617-2630.

Funding

Countryside Council for Wales

Camargue

Camargue

Camargue

Bird species included in model

Greater flamingo (Phoenicopterus roseus)

Environmental issues simulated

Salina (salt pan) water level management affecting habitat area

Recommendations from modelling

56% of the total area of saltpans are required to fulfill the energy requirements of breeding Flamingo.

More information

Deville, A.-S., 2013. Besoins énergétiques et distribution spatiale du Flamant rose (Phoenicopterus roseus) dans les salins de Camargue, conséquences de la reconversion du site pour la conservation de l’espèce (Energetic needs and spatial distribution of the Greater Flamingo (Phoenicopterus roseus), salt pans reconversion consequences for the conservation of the species). PhD thesis, Universite Montpellier II.

Funding

MAVA Foundation, Single Inter-ministerial Fund

Cardiff Bay

Cardiff Bay

Cardiff Bay

Bird species included in model

Common redshank (Tringa totanus)

Environmental issues simulated

Barrage result in a change of habitat area and availability time, and food density / quality. Mitigation through new lagoon.

Recommendations from modelling

Habitat loss reduces redshank survival, but mitigation by creation of higher shore level habitat of 10% of area lost can offset this.

More information

Goss-Custard, J. D., Burton, N. H. K., Clark, N. A., Ferns, P. N., McGrorty, S., Reading, C. J., Rehfisch, M. M., Stillman, R. A., Townend, I., West, A. D. & Worral, D. H. (2006) Test of a behaviour-based individual-based model: increased winter mortality in a shorebird following habitat loss. Ecological Applications, 16, 2215-2222.

Funding

Centre for Ecology and Hydrology

Colne Estuary

Colne Estuary

Colne Estuary

Bird species included in model

Bar-tailed godwit (Limosa lapponica), Black-tailed godwit (Limosa limosa), Common redshank (Tringa totanus), Eurasian curlew (Numenius arquata), Eurasian oystercatcher (Haematopus ostralegus)

Environmental issues simulated

Pacific oyster reef development and removal, changing habitat area and food density / quality

Recommendations from modelling

Pacific oyster reefs can provide important feeding habitat for shorebirds, especially in sites with lower food availablity in other habitats.

More information

Herbert, R.J.H., Davies, C.J., Bowgen, K.M., Hatton, J. and Stillman, R.A., 2018. The importance of nonnative Pacific oyster reefs as supplementary feeding areas for coastal birds on estuary mudflats. Aquatic Conservation: Marine and Freshwater Ecosystems, 28(6): 1294-1307.

Funding

Natural England