Improving species distribution models: the value of data on abundance

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Assessing trends in biodiversity over space and time using the example of British breeding birds

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Spring migration routes of Long-tailed Skuas around and across the UK - results of observational and tracking data

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Changes in breeding wader assemblages, vegetation and land use within machair environments over three decades

The Uists in the Western Isles (Outer Hebrides) are home to a rare habitat known as “machair”, which is a vegetated plain of calcareous shell-sand. This habitat grades into acidic peat-based moorland, creating a unique complex of habitats consisting of dunes, pasture, cultivated sandy plains, damp grassland, wet marsh and emergent loch-edge vegetation. Collectively these habitats support exceptionally large breeding populations of waders, particularly Dunlin, Lapwing, Redshank, Ringed Plover, Oystercatcher and Snipe. There is strong evidence that egg losses to Hedgehogs, which were introduced in the 1970s, have been responsible for declines in some of these populations. However, declines in, for example, Dunlin and Ringed Plover have been recorded in areas not colonised by Hedgehogs, and some increases since 2000 have occurred in breeding wader species at sites known to support high numbers of Hedgehogs, suggesting other factors might also be at play.

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River birds' response to hydrological extremes: new vulnerability index and conservation implications

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