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Bjarni Diðrik Sigurðsson
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Institution : Agricultural University of Iceland
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Faculty : Faculty of Environmental Sciences
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Workplace : Hvanneyri 311 Borgarnes
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Worktitle : Professor
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Phone : +354 843 5342
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| Email : bjarni.sigurdsson@lbhi.is |
Main professional interests
1. Carbon, water and nutrient dynamics in natural and planted forests and woodlands.
2. Forest ecology
3. Plant succession and changes in flora and fauna due to changing climate.
The vita is arranged as follows:
1. Education
2. Professional activities and positions
3. Some research and development projects
4. Teaching and students
5. Committees (short list)
6. Society memberships
7. Publications
1. Education
University of Iceland. Dept. of Biology. I attained a B.Sc. degree in biology in spring 1993. My specialty was botany and plant-ecology.
The Swedish University of Agricultural Sciences. Faculty of Forestry. Dept. for Production Ecology. I attained a Ph.D. degree in Forest Ecology / Ecophysiology in February 2001.
2. Professional activities
2006-present.
Head of Forest Science, Restoration Ecology and Management Program, Faculty of Environment, AUI.
2005-present. Professor of forest science, Faculty of Environment, AUI.
I started as the first professor in forest science in Iceland. My position is both research and education related.
2001– 2005 Senior Researcher at the Icelandic Forest Research, Mógilsá.
I started a new position as a specialist at the Icelandic Forest Research (Rannsóknastöð skógræktar, Mógilsá). My field of expertise is studies on carbon fluxes and carbon sequestration in woody ecosystems.
2001 Researcher and lecturer at the Department for Production Ecology, The Swedish University of Agricultural Sciences.
I was hired at the Department for Production Ecology as a researcher and a lecturer. I was responsible for a study where 10 m Norway spruce trees had been exposed to elevated CO2 concentrations for four years. The study involved both field- and lab work.
1997 – 2000 Ph.D. student in Uppsala, Sweden.
Moved to Sweden and started to work on my Ph.D. degree at the Department for Production Ecology, Faculty of Forestry, The Swedish University of Agricultural Sciences (SLU). Taking courses, analysing data, writing articles, doing lab work. I defended my Ph.D. degree in Forest Ecology (Ecophysiology) in February 2001.
1994 –1996 Research site manager
I became a ‘caretaker’ of a research-site in Gunnarsholt, Iceland, hired by Agricultural Research Institute and Icelandic Forest Research. Main project: The Likely Impact of Rising CO2 and Temperature on Nordic Forests at Limiting and Optimal Nutrient Supply. This later became my Ph.D. work.
1993-1994 Research assistant
Research assistant at the Agricultural Research Institute in Reykjavik
I worked in a project concerned with the ecology of an introduced plant, Lupinus nootkatensis, much used for land reclamation in Iceland.
3. Some main research and development projects
Nordic Centre of Advanced Research on Environmental Services (CAR-ES) (2005-2010)
I The objective of this CAR is to study the effects of forest management, including afforestation, on the following major environmental services: carbon sequestration, water protection and biodiversity. I am one of three members of the steering committee and I lead the work on carbon sequestration by forestry. All the Nordic and the Baltic countries have representatives within this project. CAR-ES) is financed by SNS (co-Nordic research fund for forestry related research). The other PI’s are Per Gundersen (KVL, Denmark) and Jan Weslien (SKOGFORSK, Sweden). The project group consists of 11 research groups from all the Nordic and the Baltic countries.
Project manager for the ELF project (2002-present)
ELF (Establishment of a Long-term Forest research sites in Iceland) is a project funded by the Iceland Forest Service and the Ministry of Agriculture, where about 100 ha of a treeless landscape will be afforested, to create large (5000 m2) plots, set-up in a randomised block design, where various tree species grown as monocultures and in different mixtures. This is to study how biodiversity, carbon sequestration and wood production can be optimised in Icelandic forestry.
Nordic Center of Excellence of carbon flux studies: NCEE (2003-2008) www.necc.nu
NECC “The Nordic Center for Studies of Ecosystem Carbon Exchange and its Interactions with the Climate System” is a co-operation between Swedish, Danish, Finnish and Icelandic research groups, which are doing studies on the biosphere-atmosphere interactions of terrestrial and/or aquatic ecosystems. I am a country representative and have a chair in the steering board. In Iceland the work of one PhD student and one PostDoc is funded through the project. The group’s coordinator is Prof. Anders Lindroth, Lund University.
Coordinator for the EFG-project (1994-1996; 2001-present).
EFG stands for “Experimental Forest of Gunnarsholt” This is a 15 ha experimental forest of single clone of Populus trichocarpa that was planted in 1990 as a facility to do environmental studies on how afforestation changes both biotic and abiotic factors. A number of Nordic and European research projects have been conducted at EFG.
Coordinator for the ICEWOODS project (2002-2006)
ICEWOODS (Age-related dynamics of biodiversity and carbon cycling of Icelandic woodlands) is a joint research project between Icelandic Forest Research and Icelandic Institute of Natural history on environmental effects of afforestation with introduced Siberian larch, Sitka spruce, lodgepole pine and the native mountain birch.
Participant in a Nordic Research Project: Climate and Energy (2003-2006)
“Climate and Energy” (CE) is a new Nordic research project with funding from the Nordic
Energy Research (NEFP) and the Nordic energy sector. The project has the objective
of a comprehensive assessment of the impact of climate change on Nordic
renewable energy resources including hydropower, wind power, biofuels and solar
energy. I am working within the BioFuels group. The group’s coordinator is Prof. Seppo Kellomäki, University of Joensuu, Finland. The whole project is coordinated by Dr. Árni Snorrason, National Energy Authority, Iceland.
4. Teaching and students
Agricultural University of Iceland, professor
2005-present. The course “Forest science I”. Basic knowledge about forest science, forestry and land reclamation on national and global level is given in this course.
2005-present. The course “Forest science II – Silviculuture” This course gives an overview over silvicultural practices that are used in Iceland and elsewhere
2006-present. The course “Icelandic Forests - Field Course”. One week’s field course where students drive around Iceland and visit different forests and meet with all the main players in Icelandic forestry.
University of Iceland lecturer (stundakennari)
2003-2005. I was responsible for 1/3 of the course “Geology and Ecology of Iceland and Nature Related Tourism-planning”, at the Faculty of Geology and Geography.
2004-2005. I was responsible for 1/3 of the course. “Soils and Vegetation of Iceland” at the Faculty of Geology and Geography. This course is given in English for foreign students at University of Iceland.
2002-2005. I gave part of the course “Plants and the Environment” at the Faculty of Biology. My lectures there were about global change, the carbon cycle and ecosystem processes.
Swedish University of Agricultural Sciences, Faculty of Forestry – lecturer
2000 I gave part of the course ”The effects of air pollutants on soil and vegetation”, Dept. of Soil Sciences, SLU. Course coordinator: Lars Johnsson.
1998-2001. I gave part of the lectures in “General Ecology” at the Department for Production Ecology, Faculty of Forestry, The Swedish University of Agricultural Sciences, Uppsala, Sweden. 26 August 1998.
1998-2000. I gave part of the lectures in “Plant physiology II” at the Department for Production Ecology, Faculty of Forestry, The Swedish University of Agricultural Sciences, Uppsala, Sweden.
1999-2001. I gave part of the lectures in “Plant Ecology II” at the Department for Production Ecology, Faculty of Forestry, The Swedish University of Agricultural Sciences, Uppsala, Sweden.
1996-2001. I was an assistant teacher in number of undergraduate courses, helping with lab-work, etc.
NorFA/NordForsk
2002-2006. Three NorFa PhD courses in Sweden, Finland and Estonia
- http://www-carbonsweden.slu.se/norfa/index.html
I gave part of the lectures in three PhD courses. The courses were organized within the network "Carbon dynamics in managed terrestrial ecosystems" within the field of forest ecology, with special emphasis on how climate change will affect processes controlling the carbon balance. The network’s coordinator was Prof. Sune Linder, SLU.
2003. PhD course on carbon dynamics and biodiversity
http://www-carbonsweden.slu.se/norfa/index.html
I was the main organizer of a Nordic-Estonian PhD course “Effects of Afforestation on Carbon Balance and Biodiveristy” that was given in Reykjavik-Hallormsstadur Iceland in August 7-14, 2003. Altogether 11 teachers and 20 PhD and Master students participated in this couse. The course was funded by Icelandic Forest Research, The NorFA carbon network and the CBACCI Nordic Graduate School.
1998. PhD course on carbon fluxes in forest ecosystems.
I gave a part of the lectures in the NorFA PhD course: “Fluxes of carbon dioxide within and above boreal forests and interactions with the climate system”. Department for Production Ecology, Faculty of Forestry, The Swedish University of Agricultural Sciences. Flakaliden and Vindeln, Västerbotten län, Sweden, 3-9 August 1998.
Supervised theses
B.Sc. theses
Rakel Jakobína Jónsdóttir (2007). Frysting skógarplantna. Prófritgerð 5 eininga lokaverkefnis til B.S. gráðu í skógfræði við Landbúnaðarháskóla Íslands.
Benjamín Örn Davíðsson (2007). Getur skógarfura vaxið á Íslandi? Úttekt á kvæmatilraun á Austur-, Vestur, Suður og Norðurlandi. Prófritgerð 5 eininga lokaverkefnis til B.S. gráðu í skógfræði við Landbúnaðarháskóla Íslands.
Helena Marta Stefánsdóttir (2006). Effects of elevated carbon dioxide concentration and temperature on needle morphology and shoot growth in Norway spruce. Prófritgerð 5 eininga sjálfstæðs rannsóknaverkefnis við Líffræðiskor Háskóla Íslands, 47 bls. (á ensku, íslenskur útdráttur).
Anna Cecilia Inghammar (2006) Spájöfnur fyrir lífmassa bols, greina og barrs ungra lerkitrjáa (Larix sibirica). Prófritgerð 5 eininga sjálfstæðs rannsóknaverkefnis til B.S. gráðu við Umhverfisdeild Landbúnaðarháskóla Íslands.
Hrafnkels Ásólfsson Proppe (2006). Lögun skóga að landslagi. Skriðufellsskógur í Þjórsárdal. Prófritgerð 5 eininga sjálfstæðs rannsóknaverkefnis til B.S. gráðu við Umhverfisskipulagsbraut Landbúnaðarháskóla Íslands.
Jón Ágúst Jónsson (2004). “Lífríki asparskóga” Changes in bird life, surface fauna and ground vegetation following afforestation by black cottonwood (Populus trichocarpa), Biology Department, University of Iceland.
M.Sc theses
Mona-Maria Brinker (2007). Growth and allometric analysis of young Siberian larch trees (Larix sibirica). A case study from Eastern Iceland. Diploma thesis (Meistararitgerð). University of Applied Sciences in Eberswalde, Germany.
Jón Ágúst Jónsson (2007). He is working on his M.Sc. thesis titled “Áhrif skógræktaraðgerða á kolefnisjöfnuð asparskógar” at the Biology Department, University of Iceland.
Anna Arneberg (2005) Skogreisningens effekter på nedbrytning og vegetasjon på Island (Afforestation effects on decomposition and vegetation in Iceland). M.Sc. thesis, Maí 2005. Institutt for Naturforvaltning, Norwegian University of Life Sciences, Ås, Norway, 53 bls.
Gerður Guðmundsdóttir (2005) Photosynthetic response of variable light intensity, CO2 concentration and temperature in native and introduced broadleaved tree species in Iceland. M.Sc. thesis, December 2005. Biological Institute (with prof. Helge Ro-Poulsen), University of Copenhagen, Denmark, 47 bls.
Björgvin Eggertsson (2004) “Effect of different site preparations for survival of tree seedlings” (Skogsplantornars överlevnad i Gunnarsholt, södra Island – en jämnförelse av olika anläggningsmetoders inverkan ett år efter plantering). Examensarbete (Meistararitgerð), varið í apríl 2004. Yrkeshögskolan Sydväst, Institutionen för Skogsbruk, Ekenäs, Finnlandi, 63 bls.
Ph.D. thesis
Brynhildur Bjarnadóttir (200X), who is currently working on her Ph.D. thesis titled “Ecosystem carbon dynamics of Larix sibirica plantations in Iceland” at the Department for Physical Geography and Ecosystem Analysis (with prof. Anders Lindroth), Lund University, Sweden.
5. Committees (short list)
Steering board of Vaxtasamningur Austurlands (2007-2009)
I was appointed by the Ministry of Industry and Buisnesses (Iðnaðar- og viðskiptaráðuneyti) to the steering board of Vaxtasamningur Austurlands. This is a project initiated to sitimulate research and development activity in eastern Iceland.
Co-editor of Icelandic Agricultural Sciences (2004-present)
I am one of three members of the editorial board of Icel.Agric.Sci. (www.ias.is) A scientific journal that publishes original research articles in English about research on land use and land-use change.
Advisory committee at the Ministry of Environment (2006-2007)
I am was of five scientists appointed to make a review and some suggestions about the policy measures needed to increase the use of the native mountain birch in afforestation activities in Iceland and how the remains of the old-growth woodlands were best protected.
Evaluation committee for PhD degree at the Forestry faculty of SLU (2006)
I was appointed to the Evaluation Committee for the Ph.D. thesis Impact of elevated temperature and [CO2] on spring phenology and photosynthetic recovery of boreal Norway spruce written by Michelle Slaney. The oral defence of the thesis was held in Alnarp on the 5th of May, 2006.
Main organiser of a Nordic workshop about forests and ecosystem services in Iceland (2006)
I was the main organizer of a Nordic scientific workshop: “Effects of Afforestation on Ecosystem services” that was organized within the Center for Advanced Forest Research – Environmental Services. Haukadalur, Iceland, 12-15 October 2007.
Advisory committee at the Ministry of Agriculture (2005-2007)
I am one of seven scientists from the Agricultural University of Iceland, the Soil Conservation Service and the Iceland Forest Service in an advisory committee at the Ministry of Agriculture. The scope of the committee is how to fulfil the obligations that FCCC and the Kyoto-protocol have brought, and to give guidance about necessary monitoring and new concepts related to the carbon sequestration and carbon cycling in terrestrial ecosystems.
Steering board of Forestry Association of Reykjavik (2002-2004)
Forestry Association of Reykjavik is the largest Forestry Association in Iceland with about 1300 members.
Country representative in COST E21 (2000-2005)
Country representative (Iceland) in the management committee for the European COST E21 project ‘Contribution of forests and forestry to the mitigation of greenhouse effects’.
Organising committee of an international conference on effects of afforestation on ecology, landscape and rural development (2005)
One of five scientists in the organising committee of the AFFORNORD Conference, held at Reykhólar, Iceland, 19-22 June 2005.
Co-ordinator of a forestry workshop at a meeting of the Council of the Nordic Ministers, Akureyri, Island (2004)
I was the main organizer and a co-ordinator of a Nordic workshop “Skovens fremtidige muligheder” that was given at the NKO-meeting of the Agricultural-, Fisheries-, and Environmental ministers of the Nordic Council of Ministers, Akureyri, Iceland in August 13, 2004.
Steering board of a Nordic Graduate School: CBACCI (2003)
I was for one year a country representative in the steering board of the Nordic Graduate School “Carbon-Biosphere- Aerosol-Cloud-Climate Interaction (C-BACCI). The group’s coordinator is Prof. Markku Kulmala, University of Helsinki.
Organizing committee of the 10th International Lupin Conference (2002)
One of five scientists in the organising committee of the 11th International Lupin Conference, held at Laugarvatn, Iceland, 19-24 June 2002.
6. Society membership
Member of the following societies:
Hið íslenska náttúrufræðifélag
Landgræðslufélag öræfinga
Skógræktarfélag Íslands
 Ritaskrá ( Publications )
7. Publications
Grouping is as follows:
7.1. Peer-reviewed journal papers.
7.2. Book chapters.
7.3. Reports
7.4. Peer-reviewed papers in Icelandic
7.5. Other scientific publications - not peer reviewed
7.6. Thesis-Dissertation
7.1. Peer-reviewed journal papers
Kostiainen, Katri, Seija Kaakinen, Pekka Saranpää, Bjarni D. Sigurdsson, Sven-Olof Lundqvist, Sune Linder & Elina Vapaavuori. 2007. Stem wood properties of mature Norway spruce after three years of continuous exposure to elevated carbon dioxide and temperature. Global Change Biology (submitted)
Ward, Eric J., Ram Oren, Bjarni D. Sigurdsson, Paul G. Jarvis & Sune Linder. 2007. Fertilization effects on mean stomatal conductance are mediated through changes in the hydraulic attributes of mature Norway spruce trees. Plant, Cell and Environment, (submitted)
Bjarnadottir, Brynhildur, Bjarni D. Sigurdsson and Anders Lindroth. 2007. Estimate of annual carbon balance of a young Siberian larch (Larix sibirica) plantation in Iceland. Tellus B (submitted)
Lindroth, Anders, Fredrik Lagergren, Mika Aurela, Brynhildur Bjarnadottir, Torben Christensen, Ebba Dellwik, Achim Grelle, Andreas Ibrom, Torbjörn Johansson, Harry Lankreijer, Samuli Launiainen, Tuomas Laurila, Meelis Mölder, Eero Nikinmaa, Kim Pilegaard, Bjarni D. Sigurdsson and Timo Vesala. 2007. Leaf area index is the principal scaling parameter for both gross photosynthesis and ecosystem respiration of northern deciduous and coniferous forests. Tellus B (submitted).
Sigurdsson, Bjarni D & Borgþór Magnússon (2007). Carbon fluxes in relation to vegetation development on Surtsey island. Surtsey Res. 12: (Submitted).
Hyvönen, Riitta, Göran I. Ågren, Sune Linder, Tryggve Persson, M. Francesca Cotrufo, Alf Ekblad, Michael Freeman, Achim Grelle, Ivan A. Janssens, Paul G. Jarvis, Seppo Kellomäki, Anders Lindroth, Denis Loustau, Tomas Lundmark, Richard J. Norby, Ram Oren, Kim Pilegaard, Michael G. Ryan, Bjarni D. Sigurdsson, Monika Strömgren , Marcel van Oijen and Göran Wallin. 2007. Tansley review. The likely impact of elevated [CO2], nitrogen deposition, increased temperature and management on carbon sequestration in temperate and boreal forest ecosystems. New Phytologist, 173: 463–480.
Jónsson, Jón Ágúst, Guðmundur Halldórsson and Bjarni D. Sigurdsson (2006). Changes in bird life, surface fauna and ground vegetation following afforestation by black cottonwood (Populus trichocarpa). Icelandic Agricultural Sciences 19: 33-41.
Gudmundsdóttir, Gerður & Bjarni D. Sigurdsson. 2005. Photosynthetic temperature response of mountain birch (Betula pubescens Ehrh.) in comparison with three other broadleaved tree species in Iceland. Icelandic Agricultural Sciences 18: 43-51.
Sigurdsson, Bjarni D., Borgthor Magnusson, Asrun Elmarsdottir & Brynhildur Bjarnadottir (2005). Biomass and composition of understory vegetation and the forest floor carbon stock across Siberian larch and mountain birch chronosequences in Iceland. Annals of Forest Science 62 (8): 881-888.
Medlyn, B.E., P. Berbigier, R. Clement, A. Grelle, D. Loustau, S. Linder, L. Wingate, P.G. Jarvis, B.D. Sigurdsson & R.E. McMurtrie. 2005. The carbon balance of coniferous forests growing in contrasting climatic conditions: a model-based analysis. Agricultural and Forest Meteorology 131: 97-124.
Einarsson, Stefán Freyr, Bjarni D. Sigurdsson & Arnór Snorrason. 2004. Estimating aboveground biomass for Norway spruce (Picea abies) in Iceland. Icelandic Agricultural Sciences 16-17: 53-63.
Kostiainen, Katri, Seija Kaakinen, Pekka Saranpä, Bjarni D. Sigurdsson, Sune Linder, and Elina Vapaavuori (2004). Effect of elevated CO2 on stem wood properties of mature Norway spruce grown at different soil nutrient availability. Global Change Biology 10: 1-13.
Bergh, J., M. Freeman, B.D. Sigurdsson, S. Kellomäki, K. Laitinen, S. Niinistö, & H. Peltola. 2003. Modelling the short-term effects of climate change on the productivity of selected tree species in Nordic countries. Forest Ecology and Management 183: 327-340.
Snorrason, A., B.D. Sigurdsson, G. Guðbergsson, K. Svavarsdottir & Th.H. Jónsson. 2002. Carbon sequestration in forest plantations in Iceland. Icelandic Agricultural Sciences 15: 79-91.
Sigurdsson, B.D., P. Roberntz, M. Freeman, H. Saxe, M. Næss, H. Thorgeirsson & S. Linder 2002. Impact studies on Nordic forests: effects of elevated CO2 and fertilisation on gas exchange. Canadian Journal of Forest Research, 32:779-788.
Sigurdsson, B.D. 2001. Elevated [CO2] and nutrient status modified leaf phenology and growth rhythm of young Populus trichocarpa trees in a three-year field study. Trees, 15: 403-413.
Medlyn, B.E., C.V.M. Barton, M. S. J. Broadmeadow, R. Ceulemans, P. de Angelis, M. Forstreuter, M. Freeman, S.B. Jackson, S. Kellomäki, E. Laitat, A. Rey, P. Roberntz, B.D. Sigurdsson, J. Strassemeyer, K. Wang, P. S. Curtis P. G. Jarvis. 2001. Elevated [CO2] effects on stomatal conductance in European forest species: a synthesis of experimental data. New Phytologist, 149: 247-264.
Sigurdsson, B.D., H. Thorgeirsson S. Linder. 2001. Growth and dry-matter partitioning of young Populus trichocarpa trees during three years of elevated CO2 and fertilisation. Tree Physiology, 21: 941-950.
Sigurdsson, B. D. & Snorrason, A. 2000. Carbon sequestration by afforestation and revegetation as a means of limiting net-CO2 emissions in Iceland. Biotechnology, Agronomy, Society and Environment, 4 (4): 303-307.
Strachan, I. B., Ó. Arnalds, F. Pálmason, H. Þorgeirsson, B. D. Sigurdsson, H. Sigurðardóttir G Novoselac. 1998. Soils of the Gunnarsholt experimental plantation. Icelandic Agricultural Sciences, 12: 15-26.
Strachan, I. B., B. D. Sigurdsson & J. H. McCaughey. 1998. Soil hydrology at the Gunnarsholt experimental plantation: Measurements and results. Icelandic Agricultural Sciences, 12: 27-34.
Sigurdsson, B. D., Á. L. Aradóttir I. B. Strachan. 1998. Cover and canopy development of a newly established poplar plantation in south Iceland. Icelandic Agricultural Sciences, 12: 35-46.
7.2. Book chapters and reviewed proceeding books
Sigurdsson, Bjarni D., Arnor Snorrason, Bjarki Þór Kjartansson & Jon A. Jonsson. 2007. Total area of planted forests in Iceland and their carbon stocks and fluxes. In: Halldórsson G., Oddsdóttir E.S., and Eggertsson O. (eds). Effects of afforestation on ecosystems, landscape and rural development. TemaNord 2007, XXX, 198-205 (in press).
Belyazid, Salim, Bjarni D Sigurdsson, Hördur Haraldsson, Harald Sverdrup. 2007. Adapting the ForSAFE model to simulate changes in the ground vegetation after afforetstation in Iceland: A feasibility study. In: Halldórsson G., Oddsdóttir E.S., and Eggertsson O. (eds). Effects of afforestation on ecosystems, landscape and rural development. TemaNord 2007, XXX, 78-84 (in press).
Elmarsdottir, Asrun, 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. 2007. Age–related dynamics in biodiversity and carbon cycling of Icelandic woodlands (ICEWOODS): Experimental set–up and site descriptions. In: Halldórsson G., Oddsdóttir E.S., and Eggertsson O. (eds). Effects of afforestation on ecosystems, landscape and rural development. TemaNord 2007, XXX, 100-107 (in press).
Gundersen, Per, Jan Weslien, Bjarni D. Sigurdsson, Magne Sætersdal, Leena Finér & Ingeborg Callesen. 2007. The objectives of the research network “Centre of Advanced Research on Environmental Services” (CAR-ES). In: Halldórsson G., Oddsdóttir E.S., and Eggertsson O. (eds). Effects of afforestation on ecosystems, landscape and rural development. TemaNord 2007, XXX, 126-131 (in press).
Bjarnadottir, Brynhildur & Bjarni D. Sigurdsson. 2007. Eddy flux measurements over a young Larix sibirica stand in eastern Iceland: measurements and initial results. In: Halldórsson G., Oddsdóttir E.S., and Eggertsson O. (eds). Effects of afforestation on ecosystems, landscape and rural development. TemaNord 2007, XXX, 85-91 (in press).
Sigurðsson, Bjarni D. & Ásrún Elmarsdóttir. 2006. Áhrif nýskógræktar á umhverfið. Kafli 3,6. Í: Skógarbók Grænni skóga (Guðmundur Halldórsson, ritstj.). Landbúnaðarháskóli Íslands, 111-115.
Óladóttir, Arnlín & Bjarni D. Sigurðsson. 2006. Skógarvistkerfi. Kafli 3,1. Í: Skógarbók Grænni skóga (Guðmundur Halldórsson, ritstj.). Landbúnaðarháskóli Íslands, 59-72.
Sigurdsson, B.D. & B. Magnusson. 2004. Seed ecology of Nootka lupine (Lupinus nootkatensis) in Iceland. In: Proceedings of the 10th International Lupine Conference. Wild and Cultivated Lupins from the Tropics to the Poles, Laugarvatn, Iceland, 19-24 June 2002 (Ed. E. van Santen). Intern. Lupin Ass., pp. 195-198.
Magnusson, B., S.H. Magnusson & B.D. Sigurdsson. 2004. Plant succession in areas colonized by the introduced Nootka lupin in Iceland. In: Proceedings of the 10th International Lupine Conference. Wild and Cultivated Lupins from the Tropics to the Poles, Laugarvatn, Iceland, 19-24 June 2002 (Ed. E. van Santen). Intern. Lupin Ass., pp. 170-177.
7.3. Reports
Lindroth, A., F. Lagergren, T. Johansson, T. Laurila, K. Pilegaard, B.D. Sigurdsson, T. Vesala, J. Rinne, S. Launiainen, N. Altimir, P. Keronen, J. Pumpanen, M. Aurela, A. Lohila, T. Thum, B. Bjarnadottir, A. Ibrom, T. Christensen, H. Lankreijer. 2006. Parameters characterizing net ecosystem exchange and respiration in Nordic forest ecosystems. In: M. Kulmala, A. Lindroth & M. Ruuskanen (eds.). Proceedings of BACCI, NECC and FCoE activities 2005. Report Series in Aerosol Science 81A: 331-336.
Jón Guðmundsson, Anna María Ágústsdóttir, Arnór Snorrason, Ása L. Aradóttir, Bjarni D. Sigurðsson, Hlynur Óskarsson og Sigmar Metúsalemsson. (2005). Kolefnisbinding og landnýting. Skuldbindingar Íslands gagnvart landnýtingarþætti í rammasamningi Sameinuðu þjóðanna um verndun andrúmsloftsins og Kyotobókunar við þann samning. Skýrsla unnin á vegum Landbúnaðarráðuneytisins. Maí 2005, 19 bls.
Albert S. Sigurðsson, Sigurður H. Magnússon, Jóhanna M. Thorlacius, Hreinn Hjartarson, Páll Jónsson, Bjarni D. Sigurðsson, Borgþór Magnússon and Hlynur Óskarsson. Integrated monitoring at Litla-Skard, Iceland. Project overview 1996-2004. Skýrsla Umhverfisstofnunar, UST- 2005: 08, 65 bls.
Magnusson, B., Magnusson, S.H. & B.D. Sigurdsson. 2001. Vegetation succession in areas colonized by the introduced Nootka lupin (Lupinus nootkatensis) in Iceland. Fjölrit RALA, 207, 100 pp. (In Icelandic, English summary).
Sigurdsson, B.D., B. Magnusson & S.H. Magnusson. 1995. Regrowth of Nootka lupine after cutting. In: B. Magnusson (ed.) Biological studies of Nootka lupine (Lupinus nootkatensis) in Iceland – Growth, seed set, chemical content and effect of cutting. Fjölrit RALA, 178, 28-37. (In Icelandic, English summary).
Magnusson, B., B.D. Sigurdsson, S.H. Magnusson & S. Baldursson. 1995. Growth and yield of Nootka lupine. In: B. Magnusson (ed.) Biological studies of Nootka lupine (Lupinus nootkatensis) in Iceland – Growth, seed set, chemical content and effect of cutting. Fjölrit RALA, 178, 9-27. (In Icelandic, English summary).
Magnusson, B. & B.D. Sigurdsson. 1995. Protein, minerals, fibres and alkaloid content of Nootka lupine. In: B. Magnusson (ed.) Biological studies of Nootka lupine (Lupinus nootkatensis) in Iceland – Growth, seed set, chemical content and effect of cutting. Fjölrit RALA, 178, 44-65. (In Icelandic, English summary).
7.4. Peer-reviewed papers in Icelandic
Sigurdsson, B.D & B. Magnusson. 2004. Seed ecology of the Nootka lupin (Frævistfræði alaskalúpínu). Náttúrufræðingurinn 72 (3-4): 110-116. (In Icelandic, English summary).
Magnusson, B., S.H. Magnusson & B.D. Sigurdsson 2003. Áhrif alaskalúpínu á gróðurfar (Effects of introduced Nootka lupin (Lupinus nootkatensis) on plant succession in Iceland). Náttúrufræðingurinn 71 (3-4): 98-111. (In Icelandic, English summary).
7.5. Other scientific publications in English or Icelandic - not peer reviewed
Bjarnadóttir, Brynhildur & Bjarni D. Sigurðsson. 2007. Kolefnisbinding með nýskógrækt. Nýjustu rannsóknaniðurstöður. Fræðaþing landbúnaðarins 4: (in press)
Guðleifsson, Bjarni E. & Bjarni Diðrik Sigurðsson. 2007. Áhrif skógræktar á ánamaðkasamfélagið. Fræðaþing landbúnaðarins 4: (in press).
Elmarsdóttir, Ásrún, Borgþór Magnússon og Bjarni D. Sigurðsson. 2007. Gróðurfarsbreytingar í kjölfar skógræktar - Samanburður á birki- og barrskógum. Fræðaþing landbúnaðarins 4: (in press)
Sigurðsson, Bjarni D., Björgvin Ö. Eggertsson, Hreinn Óskarsson og Þór Þorfinnsson (2006). Langtímarannsóknir á áhrifum tegundablöndu, áburðargjafar og upphafsþéttleika í skógrækt (LT-verkefnið). Ársskýrsla Skógræktar ríkisins 2005. Skógrækt ríkisins, Egilsstöðum, bls 30-32.
Sigurðsson, Bjarni Diðrik, Hálfdán Björnsson og Starri Heiðmarsson (2006). Mörg eru náttúruundrin - nýtt jökullón í Esjufjöllum og landnám gróðurs á Breiðamerkurjökli. Glettingur 15 (2-3): 48-52.
Sigurðsson, Bjarni Diðrik (2006). Íslenskar rannsóknir á vatnshringrás skóga. Rit fræðaþings landbúnaðarins 2006: 108-112.
Sigurðsson, Bjarni Diðrik, Björgvin Eggertsson, Hreinn Óskarsson og Þór Þorfinnsson (2006). Langtímarannsóknir á áhrifum tegundablöndu, áburðargjafar og upphafsþéttleika í skógrækt (LT-verkefnið). Rit fræðaþings landbúnaðarins 2006: 285-288.
Sigurðsson, Bjarni D., Ásrún Elmarsdóttir & Borgþór Magnússon. 2005. Áhrif skógræktar á sýrustig jarðvegs og gróðurfar (Effect of afforestation on soil pH and ground vegetation). Proccedings from Fræðaþing landbúnaðarins 2005:303-306. (In Icelandic).
Guðmundsdóttir, Gerður & Bjarni D. Sigurðsson. 2005. Kjörhitastig birkis og þriggja annarra algengra trjátegunda á Íslandi (Optimum temperature of mountain birch and three other common tree species in Iceland). Proccedings from Fræðaþing landbúnaðarins 2005: 341-344. (In Icelandic).
Jónsson, Jón Á., Bjarni D. Sigurðsson, Brynjólfur Sigurjónsson, Guðmundur Halldórsson & Kesara Anamthawat-Jónsson. 2005. Breytingar á botngróðri, skordýra- og fuglalífi við framvindu asparskógar (Successional changes in ground vegetation, insects and avian fauna in a poplar forest). Proccedings from Fræðaþing landbúnaðarins 2005: 408-411. (In Icelandic).
Sigurðsson, Bjarni D. Arnór Snorrason, Bjarki Þór Kjartansson & Brynhildur Bjarnadóttir (2005). Kolefnisbinding með nýskógrækt. Hvar stöndum við og hverjir eru möguleikarnir. Rit Fræðaþings landbúnaðarins 2005: 20-24.
Haraldsson, Hörður, Harald Sverdrup, Salim Belyazid, Bjarni D. Sigurdsson, Guðmundur Halldórsson. 2005. The System Analysis process preparing for assessments of effects of afforestation in Iceland. In: Hördur Haraldsson. Developing methods for modelling procedures in System Analysis and System Dynamics. Doctoral thesis, Department of Chemical Engineering, Lund University, Sweden. 9 p.
Sigurðsson, Bjarni D. & Borgþór Magnússon (2005). Skógarsnípa: nýr íslenskur varpfugl finnst í furuskógi í Skorradal (Woodcock (Scolopax rusticola) found breeding in Icelandic woodland). Skógræktarritið 2005 (1): 14-17 (In Icelandic, English summary).
Magnússon, Borgþór & Bjarni D. Sigurðsson (2005). Flókakræða fundin í Vatnshornsskógi í Skorradal. Skógræktarritið 2005 (1): 51-55 (In Icelandic).
Sigurðsson, Bjarni D. (2005). Einföld aðferð til að koma aspar- eða víðiskógi í lúpínubreiður (Effects of preculture of Nootka lupin (Lupinus nookatensis) for survival and growth of deciduous tree cuttings). Skógræktarritið (1): 27-35 (In Icelandic, English summary).
Sigurðsson, B.D., G. Halldórsson & L. Heiðarsson. 2003. Ertuygla. “Nýr” vágestur í skógrækt í nánd við lúpínubreiður. (Broom moth causes problems on afforestation sites in S and SE Iceland). Skógræktarritið 2003(1): 87-92. (In Icelandic, English summary).
Sigurðsson, B.D. & B. Bjarnadóttir. 2004. Beinar mælingar á kolefnisbindingu skógræktarsvæða. Proccedings from Fræðaþing landbúnaðarins 2004: 269-272. (In Icelandic).
Sigurðsson, Bjarni D. Brynhildur Bjarnadóttir, Ian B. Strachan & Friðrik Pálmason. 2004. Tilraunaskógurinn í Gunnarsholti II. Vatnið í skóginum (Gunnarsholt Experimental Forest II. Annual water balance and water quality). Skógræktarritið 2004 (1): 51 – 60. (In Icelandic, English summary).
Sigurðsson, Bjarni D. 2004. Hafa skal það sem sannara reynist – viðbót við greinina Tilaunaskógurinn í Gunnarsholti II. Vatnið í skóginum. Skógræktarritið 2004(2): 123.
Elmarsdóttir, Á, B.D. Sigurðsson, G. Halldórsson, Ó.K. Nielsen & B. Magnússon. 2003. Áhrif skógræktar á lífríkið. Proceedings from Ráðunautafundur 2003, 107-111. (In Icelandic).
Sigurðsson, B.D. 2003. Tilraunaskógurinn í Gunnarsholti I. Einn mest rannsakaði skógur landsins. (The Gunnarsholt Experimental Forest I: history and literature review). Skógræktarritið 2003(1): 67-73. (In Icelandic, English summary).
Sigurdsson, B.D. 2002. What is a forest? An usable definition for Iceland in terms of the Kyoto-agreement (Hvað er skógur? Hugleiðingar í sambandi við kolefnisbindingu). Skógræktarritið 2002(1): 89-94. (In Icelandic).
7.6. Thesis-Dissertation
Sigurdsson, B.D. 2001. Environmental control of carbon uptake and growth in a Populus trichocarpa plantation in Iceland. Acta Universitatis Agriculturae Sueciae. Ph.D. thesis. Silvestria 174. 64 pp.
Sigurdsson, B.D. 1993. Fræforði alaskalúpínu (Lupinus nootkatensis) á uppgræðslusvæðum í Heiðmörk og Öræfasveit. (Seed bank of Lupinus nootkatensis at two reclamation sites in Iceland). B.Sc. project thesis. at the Biology Dept., University of Iceland, 21 pp (In Icelandic).
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