Evaluatie van zeven jaar runderbegrazing in duinvalleien op Vlieland

W.K.R.E. van Wingerden, M. Nijssen, P.A. Slim, J. Burgers, G.A.J.M. Jagers op Akkerhuis, A.P. Noordam, G.F.P. Martakis, H. Esselink, W.J. Dimmers, R.J.M. van Kats

    Research output: Book/ReportReportProfessional

    Abstract

    We evaluated seven years of light cattle grazing of dune valleys (Frisian island of Vlieland) as to management objectives and effects on vegetation, flora and fauna. We compared vegetation, flora and fauna from 1993 and 2000 in a BACI-design of 14 grazed and 14 ungrazed plots, of which 20 were randomly selected from the stratum `grass overgrown moist dune valleys', and 8 from `intact Empetrum vegetations. Development towards shrubland and woodland is tempered as a consequence of cattle browsing of twigs and leaves of Prunus avium, and Betula pubescens, which reduces height and the growth form of these species. Browsing of P. avium is surprising as this is expected to occur only under shortage of other food plants. The number of seedlings under 0.5 mheight, however, increased, even in the grazed plots. Cattle form bare patches and trails in the dense and high field layers of Calamagrostis epigejos, and Carex arenaria. Vegetation height of the `overgrown valleys' increases significantly in the ungrazed plots, whereas it increases (very) lightly in the grazed plots. Numbers of plant and invertebrate species increase, which could be related to a general change to moist conditions. Grazing has neutral to light positive effects on bio-diversity, even inthe invertebrates the species number of which mostly decrease under heavier grazing pressures.
    Original languageDutch
    Place of PublicationWageningen
    PublisherAlterra
    Number of pages102
    Publication statusPublished - 2001

    Publication series

    NameAlterra-rapport
    No.375
    ISSN (Print)1566-7197

    Keywords

    • bovidae
    • cattle
    • grazing
    • browsing
    • dune grasslands
    • dunes
    • vegetation
    • flora
    • fauna
    • netherlands
    • friesland
    • dutch wadden islands

    Cite this