on October 17th
1965 in Reykjavik, Iceland.
Wife: Berglind Orradottir
Citizen of Iceland
Graduated from the College of Reykjavik (Menntaskólinn
í Reykjavík) in 1985 (High School Diploma).
B.Sc. in biology
from University of Iceland 1990.
1992: “Planning and Design of Experiments in Animal Nutrition”.
Internordic Ph.D. course, held at the Agricultural University of
Lecturer: Dr. Charles J. Wilcox, professor at the University of
1994: “Interaction between the Animal and its Environment”.
Internordic Ph.D. course held at the Swedish Agricultural
Uppsala. Main lecturers: Dr.
M.F. Seabrook, University of
Nottingham, UK and Dr. R. Ewbank.
1995: “Research Methods in Ecological Agriculture”, 1st Nordic course in Ecological
Agriculture, held at Fokhol farm, Norway.
Main lecturers: Dr. C.B Flora, professor at the Iowa State
University, USA, dr. C.A. Francis, professor at the University of
USA and dr. N. Sriskandarajah, University of Western
1995: “Voluntary feed intake of livestock”. Internordic Ph.D. course,
held at Hvanneyri Agricultural College,
Iceland. Main lecturers: Dr. J.M. Forbes, professor at the University of
Leeds, UK and dr. T.R. Houpt, professor at Cornell
Pursuing Ph.D. in rangeland ecology at Texas
A&M University, Dept. of
Rangeland Ecology and Management. Main advisor: Dr.
1986 - 1987 (summers): Seasonal Ranger in Skaftafell
From 1990: Agricultural Research Institute,
Iceland, first in Dept. of Chemistry (3 months), then Dept. of Animal
Nutrition. Main fields: Grazing and feeding of sheep and horses.
1997 – 1998: Dept. of Environmental Research.
1989 - 1991: University of Iceland, Institute
of Biology. Assessment of
size and species abundance in pristine wetlands in the southern part of
Iceland (see publication no. 9).
1991 - 1994: TA in botany at the University of Iceland.
This included both courses in vascular and nonvascular plants.
Spring 1991 and 1993: Instructor
in courses on nature protection, held for wardens to be employed by the
Icelandic Nature Conservation Council (now Nature
Conservation Agency) in national parks and other natural areas under the
supervision of INCC. Fields I
Methods in nature interpretation
Natural history, botany, wildlife
Spring 1992, 1994 and 1998: Same
as above, except the course was held by the Icelandic
School of Horticulture, Department of Environmental Studies.
and research assistant at the Department of Rangeland Ecology and Managment,
Texas A&M University.
projects I have participated in or coordinated
Sheep grazing and feeding on Nootka lupins (Lupinus
Grazing and intake of sheep on lowland mires and
Grazing behavior of sheep on lowland mires.
Inheritance of skin quality in Icelandic sheep.
Research on transfer of radioactive cesium (134Cs, 137Cs) from soil through
vegetation to grazing sheep in co-operation with the Icelandic Radiation
Research project on quantitative and qualitative
amount of quinolizidine alkaloids in Nootka lupin (Lupinus
Possible use of “untraditional” N –
fertilizers in organic agriculture.
Land evaluation, suitability for grazing.
Rules to be used for certifying sustainable or low input sustainable
Degradation of Icelandic Rangelands: Effect of Sward and Surface Properties on Land Condition
(current Ph.D. project).
Selma Huld Eyjolfsdottir, Olafur Gudmundsson
(1992): Utilization of Lupinus
nootkatensis for sheep grazing under subarctic conditions. J. Anim. Sci.
70(Suppl. 1), 189.
Olafur Gudmundsson (1993): Fóđrun á alaskalúpínu (Feeding with Nootka lupin). Ráđunautafundur [Annual meeting of
the Icelandic Extension Service] 1993, 295-306.
Johann Thorsson (1993):
Inheritance of skin quality in Icelandic sheep. 44th Annual Meeting of the
European Association for Animal Production, Ĺrhus, Denmark, 16. -19. August
1993. Poster abstract.
Johann Thorsson, Anna Gudrun Thorhallsdottir
(1994): Sheep grazing on lupine under humid northern conditions. In:
Proceedings of the 1st Circumpolar Agricultural Conference, Whitehorse, YT,
Canada. (Ed: Scott Smith,CA) Agriculture Canada, Research Branch, Centre for
Land and Biological Resources Research, Ottawa, 17-18.
Knut Hove, Hans Lönsjö,
Inger Andersson, Riitta Sormunen-Christian,
Hanne Solheim Hansen, Kari Indridason, Hans Pauli Joensen,
Vappu Kossila, Andrew Liken,
Sigurdur Magnusson, Sven P. Nielsen,
Arja Paasikallio, Sigurdur E. Palsson,
Klas Rosén, Tone Selnes, Per Strand,
Johann Thorsson & Trygvi Vestergaard
(1994): Radiocaesium transfer to grazing sheep in nordic environments. In:
Nordic Radioecology. The
Transfer of Radionuclides through Nordic Ecosystems to Man. 1st ed. (Ed:
Dahlgaard, H) Elsevier, Amsterdam+, 211-227.
Olafur Gudmundsson & Johann Thorsson (1994): Grazing sheep on lupine
(Lupinus nootkatensis) in cold
climatic regions. In: Advances in Lupin Research. (Eds: Neves Martins, JM,
Beirao da Costa, ML) Instituto Superior de Agronomia (ISA Press), Lisabon,
Jon Gudmundsson, Fridrik Palmason
& Johann Thorsson (1994):
Biological nitrogen fixation and utilization of lupines in Iceland. NJF
seminar on nitrogen fixation, held at Risoe Research Station, 26th – 28th May. Poster abstract.
Johann Thorsson & Olafur Gudmundsson
(1995): Grazing sheep on lupine (Lupinus
nootkatensis) in Iceland. NJF conference held in Reykjavik Iceland, 26th – 29th June. Poster abstract.
Thora Ellen Thorhallsdottir,
Johann Thorsson, & Svafa Sigurdardottir
(1995): Effects of drainage on mires in Iceland. NJF conference held in
Reykjavik Iceland, 26th – 29th June. Abstract.
Thorsson, Kristin Hlidberg
(1997): Potential speciality products in Lupinus
nootkatensis and some native Icelandic plant species. A.
Quinolizidine alkaloids and the Nootka lupin. In: Plant Based Speciality
Products and Biopolymers. (Ed: Lone Andreasen)
(Tema Nord, 1997:606.) Nordic Council of Ministers, Copenhagen, 147-155.
Thorsson & Kristin Hlidberg
(1997): Beiskjuefni í alaskalúpínu Lupinus
nootkatensis [Alkaloids in Nootka
lupin Lupinus nootkatensis]. Búvísindi [Icelandic
Agricultural Sciences] 11:75-89.
Olafur Arnalds, Johann Thorsson & Elin F. Thorarinsdottir
(2003): Landnýting og vistvćn framleiđsla sauđfjárafurđa [Land use
and Sustainable Sheep Farming]. Fjölrit RALA nr. 211 [RALA
Report no 211]. Rannsóknastofnun landbúnađarins, Reykjavík [Agricultural
Res. Institute, Reykjavik, Iceland].
Johann Thorsson, Steve Archer, Asa Aradottir & Olafur Arnalds
(2003): Degradation of Icelandic Rangelands: Processes and Properties.
Poster presented at the annual SRM
meeting, Casper Wyoming.
Johann Thorsson, Steve Archer, Asa Aradottir, Ben Wu & Olafur Arnalds
(2004): Land Degradation in Iceland: Rates, Patterns and Processes.
Oral presentation at the annual ESA meeting,