Series: The Wetland Bird Survey Volume: 2010
By: Chas A Holt(Author), Graham Austin(Author), Neil Calbrade(Author), Heidi Mellan(Author), Richard D Hearn(Author), David Stroud(Author), Simon R Wotton(Author), Andy Musgrove(Author)
183 pages, b/w photos,b/w illustrations, colour & b/w maps, tables
The Wetland Bird Survey (WeBS) is a joint scheme of the British Trust for Ornithology (BTO), Royal Society for the Protection of Birds (RSPB) and Joint Nature Conservation Committee (JNCC), in association with Wildfowl & Wetlands Trust (WWT).
The principal aims of the scheme are to identify population sizes, determine trends in numbers and distribution, and identify important sites for non-breeding waterbirds in the UK. WeBS Core Counts are made annually at approximately 2,000 wetland sites of all habitats; estuaries and large still waters predominate. Monthly coordinated counts are made mostly by volunteers, principally from September to March, with fewer observations during summer months. Data from other sources, e.g. roost counts of geese, are included where relevant.
Waterbirds in the UK 2010/11 presents total numbers counted for all species in the most recent year in Great Britain and Northern Ireland. Annual indices are provided for the more numerous species, as are monthly indices showing relative abundance during the winter. Following publication of latest waterbird population estimates (Wetlands International 2012), revised thresholds for listing sites of international importance are used in Waterbirds in the UK 2010/11. Where applicable, interpretation of WeBS results is placed in the context of trends from other countries in the East Atlantic flyway.
There are currently no reviews for this product. Be the first to review this product!
Your orders support book donation projects
Well pleased! Excellent service as usual. Would also like to mention how prompt delivery is.
Search and browse over 110,000 wildlife and science products
Multi-currency. Secure worldwide shipping
Wildlife, science and conservation since 1985