The effect of construction activity on internationally important waterfowl species

摘要: Abstract Large-scale construction activity associated with the enlargement of Abberton Reservoir in Essex, England was calculated, mapped and subsequently modelled to examine effect disturbance on four Special Protection Area designated dabbling waterfowl species, Anas strepera (Gadwall), A. clypeata (Shoveler), crecca (Teal) penelope (Wigeon). The distribution each species compared levels environmental variables using Hurdle Model analysis spatial referencing. Numbers all varied throughout study period significant increases observed across reservoir during year period. Findings show that most important variable shallow water this area habitat as a result planned enhancement measures being particular benefit Gadwall, Shoveler Teal. Wigeon were especially site displaced from Main Section disturbing shoreline works, behaviour we attribute loss suitable grazing process. While results some responses, maintenance integrity for is attributed overall size complex (4.75 km2) phased programme which reduced extent impact disturbance. Research presented here provides evidence sensitive science based approach better deliver conservation development requirements. monitoring prior (2006–2009) phase (2010−2013) has enabled much needed, but often lacking, evidence-based reporting effects mitigation measures.