Bahía de Cádiz

Bahía de Cádiz

by | Oct 3, 2019

Bahía de Cadíz

Bird species included in model

Bar-tailed godwit (Limosa lapponica), Black-tailed godwit (Limosa limosa), Common redshank (Tringa totanus), Eurasian oystercatcher (Haematopus ostralegus), Grey plover (Pluvialis squatarola), Kentish plover (Charadrius alexandrinus), Little stint (Calidris minuta), Ringed plover (Charadrius hiaticula), Sanderling (Calidris alba)

Environmental issues simulated

Salina abandonment, aquaculture intensification, changing habitat area

Recomendations from modelling

Abandonment of traditional salinas and intensification of aquaculture does not greatly effect shorebird survival as other feeding habitat available.

More information

Stillman, R.A., Caldow, R.W.G., le V. dit Durell, S.E.A., West, A.D., McGrorty, S., Goss-Custard, J.D., Pérez-Hurtado, A., Castro, M., Estrella, S., Masero, J.A., Rodríguez-Pascual, F.H., Triplet, P., Loquet, N., Desprez, M., Fritz, H., Clausen, P., Ebbinge, B., Norris, K. and Mattison, E., 2005. Coastal bird diversity. Maintaining migratory coastal bird diversity: management through individual-based predictive population modelling, Centre for Ecology and Hydrology, Winfrith Newburgh, Dorset.

Funding

European Commission. Project number: EVK2-2000-00612

Baie de Seine

Baie de Seine

by | Oct 1, 2019

Baie de Seine

Bird species included in model

Dunlin (Calidris alpina), Eurasian curlew (Numenius arquata), Eurasian oystercatcher (Haematopus ostralegus)

Environmental issues simulated

Port development. Mitigation for habitat area and habitat availability time.

Recommendations from modelling

Port development can reduce shorebird survival, but mitigatation by reducing disturbance and habitat creation can offset this. 

More information

dit Durell, S.E.A.L.V., Stillman, R.A., Triplet, P., Aulert, C., dit Biot, D.O., Bouchet, A., Duhamel, S., Mayot, S. and Goss-Custard, J.D., 2005. Modelling the efficacy of proposed mitigation areas for shorebirds: a case study on the Seine estuary, France. Biological Conservation, 123(1): 67-77.

Funding

 Centre for Ecology and Hydrology

Baie de Somme

Baie de Somme

by | Sep 30, 2019

Baie de Somme

Case Study A

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 Series B. Biological sciences, 271(1536): 233-237.

Funding

Centre for Ecology and Hydrology

Case Study B

Bird species included in model

Eurasian oystercatcher (Haematopus ostralegus)

Environmental issues simulated

Extreme cold weather increasing energy requirements, plus a recreation, shellfishery and unspecified drivers causing disturbance

Recommendations from modelling

Disturbance from human activities more likely to reduce shorebird survival when feeding conditions or weather poor.

More information

Goss-Custard, J.D., Triplet, P., Sueur, F. and West, A.D., 2006. Critical thresholds of disturbance by people and raptors in foraging wading birds. Biological Conservation, 127(1): 88-97.

Funding

Centre for Ecology and Hydrology

Case Study C

Bird species included in model

Dunlin (Calidris alpina), Eurasian curlew (Numenius arquata), Eurasian oystercatcher (Haematopus ostralegus)

Environmental issues simulated

Hunting, cockle fishing, human recreation, Spartina encroachment, changing sediment levels

Recommendations from modelling

Intertidal hunting, shellfishing of large prey, and many short-term (rather than fewer long-term) disturbances had greatest negative effects on shorebird survival.

More information

Durell, S. E. A. le V. dit, Stillman, R. A., Triplet, P., Desprez, M., Fagot, C., Loquet, N., Sueur, F. & Goss-Custard, J. D. (2008) Using an individual-based model to inform estuary management in the Baie de Somme, France. Oryx, 42, 265-277.

Funding

European Commission. Project number: EVK2-2000-00612

Bangor Flats

Bangor Flats

by | Sep 29, 2019

Bangor Flats 

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

Bridgwater Bay

Bridgwater Bay

by | Sep 27, 2019

Bridgwater Bay

Bird species included in model

Black-tailed godwit (Limosa limosa), Common redshank (Tringa totanus), Dunlin (Calidris alpina), Eurasian curlew (Numenius arquata), Eurasian oystercatcher (Haematopus ostralegus), Grey plover (Pluvialis squatarola), Red knot (Calidris canutus), Ringed plover (Charadrius hiaticula), Turnstone (Arenaria interpres)

Environmental issues simulated

Nuclear power station developing a warm-water outflow affecting food availability

Recommendations from modelling

Warm-water outflow from nunclear power station, by reducing prey abundance, could reduce survival of Red Knot, but other birds were not predicted to be affected.

More information

Garcia, C., Stillman, R. A., Forster, R. & Bremner, J. (2011) Investigations of the links between intertidal macrofauna and their avian predators in Bridgwater Bay with an Individual-Based Model. Centre for Environment, Fisheries & Aquaculture Science Report TR161, pp 65.

Funding

EDF, NNB, Genco