We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Managed realignment in the UK– the first 5 years of colonization by birds.
- Authors
Atkinson, Philip W.; Crooks, Steve; Drewitt, Allan; Grant, Alastair; Rehfisch, Mark M.; Sharpe, John; Tyas, Christopher J.
- Abstract
With current losses of saltmarsh running at> 100 ha per year in the UK, creation of new intertidal habitats through managed realignment is likely to be increasingly used. Potentially, this has biodiversity as well as engineering benefits. However, assessing the conservation value of many of the current UK schemes is difficult as the biological monitoring has been generally poor, with a few notable exceptions. At the Tollesbury and Orplands realignment sites, Essex, bird communities were dominated by terrestrial species during the first year of inundation and waterbird communities rapidly developed during the second and third years. Five years after the initial breach in the sea wall, communities were similar to surrounding mudflats but with some notable exceptions. DunlinCalidris alpinaand Common RedshankTringa totanusthat prey on the early colonizingNereisandHydrobiaused the sites in the first 2 years. Eurasian OystercatcherHaematopus ostralegusdid not occur on the realignment site as there were no large bivalves, whereas Red KnotCalidris canutusused the site after 4–5 years coincidentally with the appearance ofMacoma balthica. The differences in the bird communities occurred because UK sites are often small, enclosed and poorly drained. If at a suitable height in the tidal frame, UK managed realignment sites are successful in that they have developed saltmarsh and biologically active mudflats but they may lack the full range of biodiversity found in surrounding natural intertidal habitats, even decades after inundation.
- Subjects
BIODIVERSITY; TOXICOLOGY; MEDICINE; PHARMACOLOGY; HABITATS; COLONIZATION
- Publication
Ibis, 2004, Vol 146, p101
- ISSN
0019-1019
- Publication type
Article
- DOI
10.1111/j.1474-919X.2004.00334.x