Skógræktarritið - 15.05.2001, Side 168

by a large-scale approach (Bryn
2000). A one-scale study of the
a-diversity would not revealed
what was really happening and
the serious consequences for
biodiversity of the re-growth.
Prospects of re-growth in sum-
mer farm areas and tree-planta-
tion in iceland
As most summer farms are
abandoned and the grazing pres-
sure is reduced, the subalpine
birch forest is claiming ground by
succession processes. The habi-
tats for antropochores, small
alpine plants and lowland plants
are reduced by re-growth, and
the biological diversity in the
summer farm landscape is low-
ered all over Norway.
Whether forest re-growth and
tree-plantation will have the
same effect on vascular plant
diversity in iceland as in Norway
is unknown as far as we know. In
Iceland the species pool is lower
(Kristinsson 1987), the climate
more oceanic, the grazing wide-
spread and more dominated by
sheep and horses. We should,
References
AAS, B. and FAARLUND, T. 1995.
Skoggrenseutviklingen i Norge,
særlig i det 20. árhundre. AmS-
Varia 24: 89-100.
AUSTRHEIM, G. 1998. Plant biodiver-
sity and land use in subalpine
grassland. A conservation biologi-
cal approach. Dr. scient. thesis,
Dept. of Botany, Univ. ofTrond-
heim, Norway.
AXELSEN, B. 1975. Ressursutnyttelse
i et fjellomráde. Seterfjellet i
0ystre Slidre - Utnyttelse av og
pávirkning pá naturgrunnlaget.
Cand. scient thesis, Dept. of
Geography, Univ. of Oslo, Norway.
BRYN, A. 2000. The effect of land-
scape changes on vascular plant
species richness in Grimsdalen, a
summer farm valley in Oppland,
south central Norway. Cand. scient
thesis, Dept. of Botany, Univ. of
Oslo, Norway.
DAUGSTAD, K. 2000. Mellom roman-
tikk og realisme. Om seterland-
skapet som ideal og realitet. Dr.
scient thesis, Dept. of Geography,
Univ. of Trondheim, Norway.
EINARSSON, E. 1987. En kort over-
sigt over nogle kulturbiotoper i
Island. In: Emanuelsson, U. and
lohansson, C.E. (eds.) Biotoper i
det nordiska kulturlandskapet.
Naturvárdsverket, Stockholm,
Rapport 3556: 65-68.
HUGHES,). and HUNTLEY, B. 1988.
Upland hay meadows in Britain -
their vegetation, management and
future. In,- Birks, H.H., Birks, H.).B.,
Kaland, P.E. and Moe, D. (eds.) The
Cultural Landscape - Past, present
and Future. Cambridge University
Press, Cambridge: 91-110.
HUSTON, M.A. 1994. Biological diver-
sity. The coexistence of species on
changing landscapes. Cambridge
University Press, Cambridge, UK.
IENSENIUS, C.H. 1872. Om vore
Beitemarker især om Fællesbeit-
er. Tonsberg Bogtrykkeri,
Christiania, Norway.
KIELLAND-LUND,). 1992. Hándbok
for feltregistrering. Viktige vege-
tasjonstyper i kulturlandskapet,
0st-Norge. Nasjonal registrering
av verdifulle kulturlandskap.
NINA, Norway.
KVAMME, M. and NORDERHAUG, A.
1999. Stolslandskapet. In: Norder-
haug, A., Austad, I., Hauge, L. and
Kvamme, M. (eds.) Skjotselsboka
for kulturlandskap og gamle
norske kulturmarker. Landbruks-
forlaget, Oslo: 183-192.
KRISTINSSON, H. 1987. A Guide to
the flowering plants and ferns of
lceland. Örn and Örlygur
Publishing House, Reykjavik.
LUNNAN, L„ NORDERHAUG, A. and
SICKEL, H. 1999. Kulturlandskap
og "Levande Stolar". Supplerende
forprosjekt til prosjekt Levande
stolar. HSFrapport 3/99.
MOEN, A. 1998. National atlas for
Norway: Vegetation. Statens Kart-
verk, Honefoss.
NEDKVITNE, )., Garmo, T.H. and
Staaland, H. 1995. Beitedyri kul-
turlandskapet. Landbruksforlaget,
Oslo, Norway.
NORDERHAUG, A„ IHSE, M. and
PEDERSEN, O. 2000. Biotope pat-
terns and abundance of meadow
plant species in a Norwegian rural
landscape. Landscape Ecology 15:
201-218.
OLSSON, G.A., AUSTRHEIM, G„ BELE,
B. and GR0NTVEDT, E. 1995.
however, be aware of the danger
of loss in biological diversity if
proper planning and manage-
ment are not implemented. In
the other Nordic countries the
importance of the cultural land-
scapes for many red list species
is given increased priority. The
seminatural vegetation also
demonstrates cultural aspects
and values. Historical interesting
seminatural habitats in lceland
that should be taken into
account in this connection was
described by Einarsson (1987).
Seterlandskapet i Budalen og En-
dalen, Midtre-Gauldal, Midt-Norge.
Kulturhistoriske og ekologiske
forhold i fjellets kulturlandskap.
Fylkesmannen i Ser-Trpndelag,
Miljovernavdelingen, rapport no. 2.
OLSSON, E.G.A., AUSTRHEIM, G.
and GRENNE, S.N. 2000. Land-
scape change patterns in moun-
tains, land use and environmental
diversity, Mid-Norway 1960-1993.
Landscape Ecology 15: 155-170.
PEDERSEN, P.A.P. 1979. Structures
and ore genesis of the Grimsdalen
sulphide deposits, southern Trond-
heim region, Norway. Norges Geo-
logiske Undersokelse 351: 77-98.
REINTON, L. 1961. Sæterbruket i
Noreg 111. H. Aschehoug and Co.
Oslo, Norway.
RUKKE, J. 1996. Vegetasjonsendringer
i seterlandskapet i Nes Nordmark
sameie de siste 60ár. Dept. of
Geography, Univ. of Oslo. Ressurs-
og miljogeografi Ser. A no. 13.
STATENS KORNFORRETNING. 2000.
httD://www.statenskornforretning.no/
skf/pt2502/99l 0/PT2502.htm
VANDVIK, V. 1995. Mountain summer
farms in Roldal, Western Norway.
Vegetation, soils and ecology.
Cand. scient thesis, Dept. of Bio-
logy, Univ. of Bergen, Norway.
VE, S. 1940. Skog og treslag i Indre
Sogn frá Lærdal til Fillefjell. Med
ei utgreiding um grani Sogn. Vest-
landets forstlige forsoksstasjon,
Medd. 23.
WHITTAKER, R.H. 1972. Evolution
and measurement of species
diversity. Taxon 21: 213-251.
WILSON, M.V. and SHMIDA, A. 1984.
Measuring beta diversity with
presence-absence data. Journal of
Ecology 72: 1055-1064.
166
SKÓGRÆKTARRITIÐ 2001 l.tbl.