Alpine Biodiversity in Europe: an Introduction

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Alpine Biodiversity in Europe: an Introduction Nagy, L., Thompson, D., Grabherr, G., and Kömer, C. Alpine Biodiversity in Europe: an Introduction. Joint Nature Conservation Comitee, Report: 1-10. 2003. Peterborough. Keywords: 78Eur/Alpine region/Alps/biodiversity/climate/diversity/environment/Europe/human impact/invertebrates/landscape/Malme/network/plant/program/vegetation/vertebrates Abstract: The publication introduces alpine environments: Alpine areas in Europe from the Atlantic edge to the Urals, Alpine landscapes and climate, Plant diversity, Vegetation, Vertebrates, Invertebrates, Natural change and man's impact, Some ongoing porgrammes on alpine biodiversity. This booklet is an introductory companion to the book 'Alpine Biodiversity in Europe' (2003). The book has arisen from the efforts of a network of scientists working on biodiversity throughout the alpine areas of Europe (ALPNET 1998- 2000), sponsored by the European Science Foundation. GeorgGrabherr ChristianKörner LaszloNagy DesThompson DominiqueAllainé Alpine Biodiversity in Europe: an Introduction MichaelBahn EmilioBalletto PietroBrandmayr GheorgheColdea ThomasDirnböck Laszlo Nagy Des Thompson Georg Grabherr Christian Körner BrigittaErschbamer JacquesGamisans DanielGómez JarleHolten JanJeník AnneLoison JuanPabloMartinez-Rica YuriMikhailov PavelMoiseev UlfMolau GiorgiNakhutsrishvili PaulOzenda HaraldPauli FrancoPedrotti ArneStrid KonradThaler Jean-PaulTheurillat HenryVäre ZoltánVarga LuisVillar RistoVirtanen aretheleadauthorsofthevolume‘AlpineBiodiversityinEurope’,EcologicalStudiesvol.167,SpringerVerlag. Introduction - alpine biodiversity in Europe This is the first ever European-wide overview of biodiversity in alpine areas... to develop a holistic understanding of biodiversity at and above the treeline. High mountains have long fascinated Compared with the lowlands, alpine vegetation people. The ancient Greeks made Mount and wildlife have been less modified by human Available from: www.springeronline.com/3-540-00108-5 Olympus the seat of many of their gods, activities. In most of the mountains of Europe “...a benchmark publication.” and the people of the Alps populated one still finds some of the wilderness long lost Martin Price, Mountain Research and Development. their austere mountaintops with dragons. in the lowlands. However, given the pressures Today, scientists, of agriculture, tourism Contents nature lovers, and and other forms of of course casual development, and the walkers find alpine nature of climate Introduction - alpine biodiversity in Europe 1 environments equally change, there is wide Alpine areas in Europe from the Atlantic edge to the Urals 2 fascinating. Their concern for the fragile Alpine landscapes and climate 4 open landscape, state of these alpine Plant diversity 6 dominated by scrub, environments. The Vegetation 8 heaths and grasslands, delicate relationships Vertebrates 10 and their specialist between the landscape, Invertebrates 12 Natural change and man’s impact 14 animal life has a soils, plants and Some ongoing programmes on alpine biodiversity 16 special allure. This animals render these Further reading 17 publication introduces areas highly sensitive Photograph credits 17 alpine environments. to environmental Dedication 17 The alpine zone change. begins where low This booklet is an © 2003 (reprinted 2004) by Joint Nature Conservation Committee temperatures limit tree growth, and it introductory companion to the book ‘Alpine Peterborough, UK, www.jncc.gov.uk stretches high to the permanent snow line; Biodiversity in Europe’ (2003). The book has Reproduction of this publication for educational or other non-commercial purposes is authorised without permission from the copyright holder. Reproduction for resale or other commercial purposes is prohibited without the prior written at northerly latitudes it grades into tundra. arisen from the efforts of a network of permission of the copyright holder. Worldwide, about 3% of the earth’s surface scientists working on biodiversity throughout British Library cataloguing-in-Publication Data. A catalogue record for this book is available from the British Library. lies in the alpine zone; glaciers and snow the alpine areas of Europe (ALPNET 1998- Citation: Nagy L, Thompson D, Grabherr G, Körner C (2003) Alpine Biodiversity in Europe: an Introduction. Joint Nature Conservation Committee, Peterborough. iv + 16 pp. hold about two-thirds of all the planet’s 2000), sponsored by the European Science ISBN 1 86107 545 6 freshwater. Foundation. Design, sub-editing and page layout by McConnell Associates, Edinburgh, Scotland Printed by Status Design, Spalding, Lincolnshire, England Available from: Scottish Natural Heritage, 2 Anderson Place, Edinburgh EH6 5NP, Scotland; Tel: ++ 44 131 446 2400; Fax: ++ 44 131 446 2405; www.snh.org.uk Acknowledgements We are grateful to Sally Johnson and Alex Geairns for making this publication possible. We acknowledge all the contributors, pictured in the booklet, for their contribution to this publication and the volume Alpine Biodiversity in Europe. 1 Alpine areas in Europe from the Atlantic edge to the Urals At what elevation do alpine areas Alpine habitats often occur as occur? scattered and isolated ‘islands’ Alpine areas occupy around 3% of The distance from the North Pole and from As in most areas of the world, Europe’s high Europe’s land surface the Atlantic Ocean, as well as mountains do not form a continuous elevation, determine climate. The coloured landscape. Rather, alpine habitats mostly The alpine zone lies above the treeline, areas of the elevation map below lie over occur as sporadic and isolated ‘islands’. where trees become stunted and give way 600 m above sea level (the approximate The largest expanses of the alpine zone are to scrub and dwarf shrubs. Treelines are lower limit of the montane forest zone in found in the Alps, Caucasus, Pyrenees and determined by climatic conditions, but have central Europe). At the Arctic Circle, the Scandes; smaller areas occur in the been modified and lowered by as much as however, the same elevation marks the Urals, Carpathians, the Rhodope-Rila massif, several hundred metres in some areas upper limit of tree growth. The treeline in the the Dinarids, Apennines, Sierra Nevada, because much of the upper montane forest Alps varies from about 1800 m to about Corsica and Scotland. zone has been burnt and grazed. 2300 m; it is at 2300 m in the Pyrenees; and in the Polar Urals it is between 200 – 300 m. An oceanic or arid climate can suppress the potential climatic treeline, such as in Scotland or in some Mediterranean mountains. Elevation map of Europe Key to colours: grey, 0 – 600 m; forest green, 600 – 1000 m; brown, 1000 – 1800 m; fluorescent green, 1800 – 2300 m; blue, 2300 – 3000 m; white appearing scattered in a blue matrix, > 3000 m. 2 3 Alpine landscapes and climate Mountains have steep ecological gradients A highly diverse landscape results in diverse alpine floras and faunas Every 100 m increase in elevation is equivalent to c. 100 km distance north. The gradients are largely determined by Mountain landforms, sculpted by temperature, which is why they are used in weathering, rock falls, and glacial and modelling ecosystem responses to climate fluvial action give rise to a diverse warming scenarios. landscape. There is a rich mosaic of habitat conditions which result from the interplay of microclimate, parent rock, The steep gradient, stretching from the hydrology, the main determinants of lowlands to the nival zone, represents biological richness of alpine areas. Today’s compressed latitudinal life zones and results diversity reflects both historical and recent in a high species richness in mountain imprints of climate and human land use. Karstic landscape, Hochschwab, Austrian Alps areas. Alpine environments of arctic, boreal, temperate and Mediterranean areas Ecosystem altitude zones largely correspond to temperature isolines. The 6 oC ground temperature isoline for the growing season shows a good agreement Nurgush, Urals, Russia Nurgush, Cairngorms, Scotland Latnjajaure, Scandes. Sweden Latnjajaure, with the position of the natural, low Boreal and arctic alpine environments receive moderate snow in winter and have severe temperature treeline, which is the lower limit frosts that churn up the soil. This may cause patterned ground over large areas. of the alpine zone. Kazbeg, Caucasus, Georgia Piz Linard, Switzerland Piz Linard, Giant Mts., Czech Republic In temperate mountains, snow cover provides protection from deep frost, but late-lying snow shortens the growing season, resulting in a distinctive mosaic of plant communities. The length of the growing season is controlled by temperature. A comparison of soil temperatures about 250 m above the Monte Cintu, Corsica Sierra Nevada, Spain Mte Perdido, Pyrenees, Spain Pyrenees, Mte Perdido, potential climatic treeline has shown much in Sub-Mediterranean mountains, such as the Pyrenees and the Corsican ranges share common among alpine areas from the features between temperate and Mediterranean mountains. The latter are characterised by subarctic to the Mediterranean. thorny hemispherical dwarf-shrub cushions, sometimes called ‘hedgehog’ vegetation. 4 5 Plant diversity The European alpine flora The diversity of today’s alpine plant The European alpine flora (i.e. species life has been influenced by past confined to or predominantly above the climate changes and human land use treeline) has recently been estimated to be in excess of 2500 species and subspecies, Advancing and retreating ice has or 20%
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