Search Results - "Roy, D.B."

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    northward shift of range margins in British Odonata by Hickling, R, Roy, D.B, Hill, J.K, Thomas, C.D

    Published in Global change biology (01-03-2005)
    “…Many species are predicted to shift their ranges to higher latitudes and altitudes in response to climate warming. This study presents evidence for 37 species…”
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    Journal Article
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    Comparative Losses of British Butterflies, Birds, and Plants and the Global Extinction Crisis by Thomas, J. A., Telfer, M. G., Roy, D. B., Preston, C. D., Greenwood, J. J. D., Asher, J., Fox, R., Clarke, R. T., Lawton, J. H.

    “…There is growing concern about increased population, regional, and global extinctions of species. A key question is whether extinction rates for one group of…”
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    Direct and indirect effects of climate and habitat factors on butterfly diversity by Menéndez, Rosa, González-Megías, Adela, Collingham, Yvonne, Fox, Richard, Roy, David B., Ohlemüller, Ralf, Thomas, Chris D.

    Published in Ecology (Durham) (01-03-2007)
    “…Many factors, including climate, resource availability, and habitat diversity, have been proposed as determinants of global diversity, but the links among them…”
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    Journal Article
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    The effects of visual apparency on bias in butterfly recording and monitoring by Dennis, R.L.H., Shreeve, T.G., Isaac, N.J.B., Roy, D.B., Hardy, P.B., Fox, R., Asher, J.

    Published in Biological conservation (01-04-2006)
    “…A basic assumption in conservation is that comparable data are available for species to facilitate risk assessment of extinction. However, the capacity for…”
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    Grazing management of calcareous grasslands and its implications for the conservation of beetle communities by Woodcock, B.A., Pywell, R.F., Roy, D.B., Rose, R.J., Bell, D.

    Published in Biological conservation (01-09-2005)
    “…Calcareous grasslands are an important habitat for floral and faunal communities in the UK and Europe. Declines due to changes in management, scrub invasion…”
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    Spatial trends in the sighting dates of British butterflies by Roy, D.B, Asher, J

    Published in International journal of biometeorology (01-08-2003)
    “…A strong relationship between appearance dates and temperature has been demonstrated over two decades for most British butterflies. Given this relationship…”
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    Effects of urban land cover on the local species pool in Britain by Roy, D. B., Hill, M. O., Rothery, P.

    Published in Ecography (Copenhagen) (01-10-1999)
    “…Regression models were used to quantify the relationship between the amount of urban land and composition of local species pools. There was no evidence that…”
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    An Ecological Classification of British Butterflies: Ecological Attributes and Biotope Occupancy by Shreeve, Tg, Dennis, Rlh, Roy, Db, Moss, D

    Published in Journal of insect conservation (01-09-2001)
    “…We classify British butterflies using 136 non-biotope associated binary state ecological attributes describing all stages of butterfly life-cycles. Using…”
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    Methods for targeting the restoration of grazing marsh and wet grassland communities at a national, regional and local scale by Mountford, J.O., Roy, D.B., Cooper, J.M., Manchester, S.J., Swetnam, R.D., Warman, E.A., Treweek, J.R.

    Published in Journal for nature conservation (2006)
    “…Grazing marsh has been recognised as a key habitat in the UK, and included within the Biodiversity Action Plan structure. In the present research, the…”
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    A method for estimating the extent of standing fresh waters of different trophic states in Great Britain by Palmer, M.A., Roy, D.B.

    Published in Aquatic conservation (01-05-2001)
    “…1. The total area of standing fresh water in Great Britain has been estimated at approximately 2400 km2. The aim of the work described in this paper was to…”
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    Critical loads for nitrogen deposition for Great Britain by Bull, K.R, Brown, M.J, Dyke, H, Eversham, B.C, Fuller, R.M, Hornung, M, Howard, D.C, Rodwell, J, Roy, D.B

    Published in WATER, AIR, & SOIL POLLUTION (01-12-1995)
    “…There is currently much interest in mapping critical loads for nitrogen deposition as part of a strategy for controlling nitrogen emissions. While nitrogen…”
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