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Effects of afforestation on ecosystems, landscape and rural development Proceedings of the AFFORNORD conference, Reykholt, Iceland, June 18–22, 2005 Eds. Gudmundur Halldorsson, Edda Sigurdis Oddsdottir and Olafur Eggertsson TemaNord 2007:508 Effects of afforestation on ecosystems, landscape and rural development Proceedings of the AFFORNORD conference, Reykholt, Iceland, June 18–22, 2005 TemaNord 2007:508 © Nordic Council of Ministers, Copenhagen 2007 ISBN 978-92-893-1443-5 Print: Ekspressen Tryk & Kopicenter Cover: Kjell Olsson, the Publication Unit Layout: the Publication Unit Cover photos: Olafur Eggertsson, Edda Oddsdottir, Halldor Sverrisson and Kjartan Kjartansson, Icelandic Forest Research Copies: 200 Printed on environmentally friendly paper This publication can be ordered on www.norden.org/order. Other Nordic publications are available at www.norden.org/publications Printed in Denmark Nordic Council of Ministers Nordic Council Store Strandstræde 18 Store Strandstræde 18 DK-1255 Copenhagen K DK-1255 Copenhagen K Phone (+45) 3396 0200 Phone (+45) 3396 0400 Fax (+45) 3396 0202 Fax (+45) 3311 1870 www.norden.org Editors: Gudmundur Halldorsson, Edda Sigurdis Oddsdottir and Olafur Eggertsson , Icelandic Forest Re- search, Mogilsa, 116 Reykjavík, Iceland. Scientific committee: Gudmundur Halldorsson, Iceland; Susanne Harding, Denmark; Jens Peter Skovsgaard, Denmark; Odd Egil Stabbetorp, Norway; Johan Barstad, Norway; Harald Sverdrup, Sweden; Tróndur Leivs- son, The Faroe Islands Nordic co-operation Nordic cooperation is one of the world’s most extensive forms of regional collaboration, involving Denmark, Finland, Iceland, Norway, Sweden, and three autonomous areas: the Faroe Islands, Green- land, and Åland. Nordic cooperation has firm traditions in politics, the economy, and culture. It plays an important role in European and international collaboration, and aims at creating a strong Nordic community in a strong Europe. Nordic cooperation seeks to safeguard Nordic and regional interests and principles in the global community. Common Nordic values help the region solidify its position as one of the world’s most innovative and competitive. Content Preface – Gudmundur Halldórsson .................................................................................... 9 1. Keynote papers ............................................................................................................. 13 1.1 Benefits of Afforestation Bill Freedman ................................................................................................. 13 1.2 The Impact of Afforestation on Bird Diversity in Scotland Mick Marquiss ................................................................................................ 25 1.3 Modelling change in ground vegetation from effects of nutrients, pollution, climate, grazing and land use Harald Sverdrup, Salim Belyazid, Hördur Haraldson and Bengt Nihlgård......................................................................................... 35 1.4 The Landscape of Afforestation: From Controversy to Acceptance Simon Bell....................................................................................................... 47 1.5 Forestry and Rural Development Áine Ní Dhubháin............................................................................................ 57 2. Ecosystems ................................................................................................................... 67 2.1 Restoration of birch and willow woodland on eroded areas Asa L. Aradottir .............................................................................................. 67 2.2 Afforestation effects on decomposition and vegetation in Iceland Anna Arneberg, Per Holm Nygaard, Odd Egil Stabbetorp, Bjarni D. Sigurdsson and Edda Oddsdóttir..................................................................... 75 2.3 Adapting the ForSAFE model to simulate changes in the ground vegetation after afforestation in Iceland: A feasibility study Salim Belyazid, Bjarni Sigurdsson, Hördur Haraldsson and Harald Sverdrup ...................................................................................... 81 2.4 ICEWOODS: Eddy flux measurements over a young Larix sibirica stand in eastern Iceland: Measurements and initial results Brynhildur Bjarnadottir and Bjarni D. Sigurdsson......................................... 89 2.5 ICEWOODS: Changes in ground vegetation following afforestation Asrun Elmarsdottir and Borgthor Magnusson ................................................ 97 2.6 ICEWOODS: Age–related dynamics in biodiversity and carbon cycling of Icelandic woodlands. Experimental design and site descriptions Asrun Elmarsdottir, Bjarni D. Sigurdsson, Borgthor Magnusson, Bjarni E. Gudleifsson, Edda S. Oddsdottir, Erling Olafsson, Gudmundur Halldorsson, Gudridur Gyda Eyjolfsdottir, Kristinn H. Skarphedinsson, Maria Ingimarsdottir & Olafur K. Nielsen................................................. 105 2.7 ICEWOODS: Fungi in larch and birch woodlands of different age in Eastern Iceland Gudrídur Gyda Eyjólfsdóttir......................................................................... 113 2.8 Structural changes in Collembola populations following replanting of birch forest with spruce in North Norway Arne Fjellberg, Per Holm Nygaard and Odd Egil Stabbetorp ...................... 119 2.9 ICEWOODS: Earthworms in Icelandic forest soils Bjarni E. Gudleifsson.................................................................................... 127 2.10 The objectives of the research network “Centre of Advanced Research on Environmental Services” (CAR-ES) Per Gundersen (co-ordinator), Jan Weslien, Bjarni D. Sigurdsson, Magne Sætersdal, Leena Finér, and Ingeborg Callesen............................. 133 6 Effects of afforestation on ecosystems, landscape and rural development 2.11 Native willows (Salix spp.) in restoration – a technical solution with ecological and social fidelity Dagmar Hagen ..............................................................................................139 2.12 ICEWOODS: The effects of afforestation on the abundance of soil fauna in Iceland Gudmundur Halldórsson and Edda S. Oddsdóttir.........................................147 2.13 A novel modelling approach for evaluating the pre-industrial natural carrying capacity of human population in Iceland Hördur V. Haraldsson and Rannveig Ólafsdóttir..........................................153 2.14 Heavy metals and beneficial soil and epigeal organisms of forest ecosystems Magdalena Jaworska and Anna Gorczyca ....................................................159 2.15 AFFORNORD – ‘Summing up’ of Ecosystem biodiversity sessions. The Effects of Afforestation on Ecosystem Biodiversity Mick Marquiss...............................................................................................167 2.16 ICEWOODS: Changes in communities of ground living invertebrates following afforestation Erling Olafsson and Maria Ingimarsdottir....................................................171 2.17 Long term benefits of mycorrhizal inoculation of forest tree seedlings Ulfur Oskarsson.............................................................................................177 2.18 Facilitation of afforestation by lupine and plastic mulch in southwest Iceland Dennis A. Riege and Adalsteinn Sigurgeirsson..............................................181 2.19 Afforestation of former intensively managed soils Eva Ritter, Lars Vesterdal and Per Gundersen .............................................187 2.20 Changes in soil carbon and nitrogen after afforestation of arable soils with oak (Quercus robur) and Norway spruce (Picea abies) Eva Ritter, Lars Vesterdal and Per Gundersen .............................................189 2.21 Loss of nitrate after gap formation: Studies in Danish beech (Fagus sylvatica L.) forests of different management intensities Eva Ritter, Lars Vesterdal and Mike Starr ....................................................197 2.22 Afforestation with oak: Effects of pre-commercial thinning on the development of ground flora Flemming Rune and Jens Peter Skovsgaard..................................................203 2.23 Total area of planted forests in Iceland and their carbon stocks and fluxes Bjarni D. Sigurdsson, Arnor Snorrason, Bjarki Thór Kjartansson and Jon A. Jonsson.....................................................................................211 2.24 Energy production and carbon balance of a young tree plantation Inge Vande Walle, Nancy Van Camp, Raoul Lemeur, Noël Lust and Kris Verheyen.......................................................................................219 3. Landscape ...................................................................................................................227 3.1 Identifying and assessing landscape through historic landscape characterisation..............................................................................................227 Oscar Aldred .................................................................................................227 3.2 Strange ideas: Subjectivity and reality in attitudes towards afforestation in Iceland Thröstur Eysteinsson and Sherry Curl...........................................................235 3.3 Leisure Landscapes: Understanding the role of woodlands in the tourism sector Suzanne Martin..............................................................................................243 3.4 European Network for Long-term Forest Ecosystem