Habitat selection and waterbody-complex use by wintering Gadwall and Shoveler in South West London: Implications for the designation and management of mulfi-site protected areas

The degree to which Special Protection Area (SPA) designation reflects ecological reality is of critical importance to wildlife conservation. We examined whether the designation of a large SPA designated to conserve wintering waterfowl (chiefly Gadwall Anas strepera and Northern Shoveler Anas clypeata), reflected the birds' habitat preferences and their use of the SPA in the context of the broader geographic area. To do this, 67 discrete waterbodies in and around the South-West London Waterbodies Special Protection Area (SWLSPA) were surveyed regularly each winter from 2004/5 to 2006/7, and new analytical methods developed, to investigate habitat selection and multiple-site use by the birds. Significant pressure on these waterbodies for mineral extraction, development and recreation, together with a long history of human usage has resulted in a wide range of habitats and conditions for these wildfowl.
We found that Gadwall and Shoveler were able to adjust their site preferences and patterns of site use in response to changes in food resources and other ecological variable both within and between winters. Akaike's information Criterion (AIC) was used to model the distribution of wildfowl between sites using a large number of physical and ecological predictor variables. This showed that Gadwall and Shoveler deffer in many of their habitat preferences, to the extent that managing a site for one will not necessarily directly benefit the other.

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Informasi Detil

Judul Seri

Journal for Nature Conservation

No. Panggil

//

Penerbit

: ., 2012

Deskripsi Fisik

11 halaman

Bahasa

English

ISBN/ISSN

1617-1381

Klasifikasi

//

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Tipe Pembawa

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Edisi

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Perpustakaan RI ARDIKOESOEMA

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