The possible impact of climate change on the future distributions and numbers of waders on Britain's non‐estuarine coast

The relationship between weather and wader distributions on non-estuarine coasts is described and used to predict how future wader distributions may respond to climate change. The distributions of eight out of nine species of wader commonly wintering on the non-estuarine coasts of Britain altered between two similar surveys, in 1984/85 and 1997/ 98, that covered 78% and 38% of Britain’s 12 594 km of non-estuarine coastline, respectively. These eight species moved at least in part either eastwards along the winter isotherms or northwards. These changes in distribution broadly coincide with a distributional shift towards the species’ respective breeding grounds and are correlated with the local winter weather over the period: increasingly mild extreme temperatures and changes in mean rainfall, mean wind speed and wind-chill. Based on the scenarios for Britain’s climate in 2020 and 2080, it is predicted that the distributions of the waders will move away from the west. The non-estuarine coasts of Britain hold particularly high proportions of the international flyway populations of Ringed Plover Charadrius hiaticula , Sanderling Calidris alba , Purple Sandpiper Calidris maritima and Ruddy Turnstone Arenaria interpres that are all expected to show continuing decline to 2080. Overwintering waders appear to be good indicators of the effects of climate change.

[1]  B. Etheridge,et al.  Survival rates of Redshank Tringa totanus wintering on the Moray Firth , 1997 .

[2]  G. Yohe,et al.  A globally coherent fingerprint of climate change impacts across natural systems , 2003, Nature.

[3]  T. Sparks,et al.  Is the detection of the first arrival date of migrating birds influenced by population size? A case study of the red-backed shrike Lanius collurio , 2001, International journal of biometeorology.

[4]  Douglas Taylor,et al.  Global and regional governmental policy and treaties as tools towards the mitigation of the effect of climate change on waterbirds: International legislation and policies , 2004 .

[5]  Theunis Piersma,et al.  Migrating shorebirds as integrative sentinels of global environmental change , 2004 .

[6]  M. Pienkowski.  The Effects of Environmental Conditions on Feeding Rates and Prey-Selection of Shore Plovers , 1983 .

[7]  M. Pienkowski.  How Foraging Plovers Cope with Environmental Effects on Invertebrate Behaviour and Availability , 1981 .

[8]  J. Kirby,et al.  Spatial dynamics of wintering Lapwings and Golden Plovers in Britain and Ireland, 1981/82 to 1983/84 , 1993 .

[9]  S. Schneider,et al.  Fingerprints of global warming on wild animals and plants , 2003, Nature.

[10]  C. Perrins,et al.  Birds of the Western Palearctic , 1978, Nature.

[11]  G. Austin,et al.  Shifting nonbreeding distributions of migratory fauna in relation to climatic change , 2005 .

[12]  M. Hulme,et al.  Climate Change Scenarios for the United Kingdom Scientific Report 1998 , 1998 .

[13]  H. Kokko.  Competition for early arrival in migratory birds , 1999 .

[14]  Theunis Piersma,et al.  Close to the edge: Energetic bottlenecks and the evolution of migratory pathways in knots , 1994 .

[15]  G. Austin,et al.  Regional trends in coastal wintering waders in Britain , 2000 .

[16]  The likely impact of sea level rise on waders (Charadrii) wintering on estuaries , 2003 .

[17]  P. McCullagh,et al.  Generalized Linear Models, 2nd Edn. , 1990 .

[18]  C. Thomas,et al.  Birds extend their ranges northwards , 1999, Nature.

[19]  M. Schirmer,et al.  Landscape-scale socio-economics of sea-level rise: Socio-economics of sea-level rise , 2004 .

[20]  P. R. Evans.  Adaptations Shown by Foraging Shorebirds to Cyclical Variations in the Activity and Availability of Their Intertidal Invertebrate Prey , 1979 .

[21]  L. Zwarts,et al.  How the food supply harvestable by waders in the Wadden Sea depends on the variation in energy density, body weight, biomass, burying depth and behaviour of tidal-flat invertebrates , 1993 .

[22]  Humphrey Q. P. Crick,et al.  The impact of climate change on birds: Impact of climate change on birds , 2004 .

[23]  R. Summers,et al.  Wader populations on the non-estuarine coasts of Britain and Northern Ireland: results of the 1984–85 Winter Shorebird Count , 1987 .

[24]  G. Austin,et al.  Population estimates of waders on the non-estuarine coasts of the UK and the Isle of Man during the winter of 1997–98 , 2003 .

[25]  Theunis Piersma,et al.  Effects of Microhabitat, Flocking, Climate and Migratory Goal on Energy Expenditure in the Annual Cycle of Red Knots , 1994 .

[26]  J. Struve,et al.  Effects of Reductions in Organic and Nutrient Loading on Bird Populations in Estuaries and Coastal , 2002 .

[27]  Andy J. Musgrove,et al.  Numbers of wintering waterbirds in Great Britain and the Isle of Man (1994/1995–1998/1999): II. Coastal waders (Charadrii) , 2003 .

[28]  Eric R. Ziegel,et al.  Generalized Linear Models , 2002, Technometrics.