Fjölrit RALA - 15.01.2001, Page 55
Sigríður Hjartar 1997. Garðplöntuflóran, áhrif áhugamannsins. í: Nýgræðingar í flórunni (ritstj. Auður
Ottesen). Ráðstefha Félags garðyrkjumanna 21. og 22. febrúar 1997, bls. 59-61.
Sigurður H. Magnússon 1997a. Ágengar tegundir, einkenni og hegðun. í: Nýgræðingar í flóranni.
(ritstj. Auður Ottesen). Ráðstefna Félags garðyrkjumanna 21. og 22. febrúar 1997, bls. 29-32.
Sigurður H. Magnússon 1997b. Restoration of eroded areas in Iceland. í: Restoration Ecology and
Sustainable Development (ritstj. Urbanska, K.M., Webb, N.R. & Edwards, P.J.). Cambridge University
Press, bls. 188-211.
Sigurður H. Magnússon og Borgþór Magnússon 1990. Birkisáningar til landgræðslu og skógræktar.
Ársrit Skógræktarfélags íslands 1990: 9-18.
Sigurður H. Magnússon og Borgþór Magnússon 1995. Uppgræðsla á Auðkúlu- og Eyvindarstaðaheiði.
Mat á ástandi gróðurs sumarið 1994. Fjölrit RALA m. 180. Rannsóknastofnun landbúnaðarins, 34 bls.
Sprent, J.I. 1973. Growth and nitrogen fixation in Lupinus arboreus as affected by shading and water
supply. New Phytologist 72: 1005-1022.
Sprent, J.I. 1993. The role of nitrogen fixation in primary succession on land. í: Primary Succession on
Land (ritstj. Miles, J. & Walton, D.W.H.). Special publication number 12 of the British Ecological
Society, bls. 209-219.
Sprent, J.I. og Silvester, W.B. 1973. Nitrogen fixation by Lupuinus arboreus grown in the open and
under different aged stands oiPinus radiata. New Phytologist 72: 991-1003.
Sprent, J.I og Sprent, P. 1990. Nitrogen Fixing Organisms. Chapman & Hall, London, 256 bls.
Swift, M.J., Heal, O.W. og Anderson, J.M. 1979. Decomposition in Terrestrial Ecosystems. Studies in
Ecology Volume 5. Blackwell Sci. Publ., Oxford, 372 bls.
ter Braak, C.J.F. 1987. CANOCO - a Fortran program for canonical community ordination by
correspondence analysis, principal component analysis and redundancy analysis. TNO Institute of
Applied Computer Science. Statistics Department Wageningen, The Netherlands, 95 bls.
Tsuyuzaki, S., Titus, J.H. og del Moral, R. 1997. Seedling establishment pattems on the Pumice Plain,
Mount St. Helens, Washington. Joumal of Vegetation Science 8: 727-734.
Þóra Ellen Þórhallsdóttir 1991. Áhrif áburðar og sáningar á gróður í tilraunareitum á Auðkúlu- og Ey-
vindarstaðaheiði og eftirverkun áburðargjafar. I: Uppgræðsla á Auðkúluheiði- og Eyvindarstaðaheiði
1981-1989 (ritstj. Ingvi Þorsteinsson). Fjölrit RALA nr. 151. Rannsóknast. landbún., bls. 89-103.
Þröstur Eysteinsson 1988. Áhrif alaskalúpínu á vöxt grenis. Ársrit Skógræktarf. íslands 1988: 75-79.
Vitousek, P.M. 1990. Bíological invasions and ecosystem processes: towards an integration of
population biology and ecosystem studies. Oikos 57: 7-13
Vitousek, P.M., Walker, L.R., Whiteaker, L.D., Mueller-Dombois, D. og Matson, P.A. 1987. Bilogical
invasion by Myrica faya alters ecosystem development in Hawaii. Science 238: 802-804.
Vitousek, P.M. og Walker, L.R. 1989. Biological invasion by Myrica Faya in Hawai’i: Plant
demography, nitrogen fixation, ecosystem effects. Ecological Monographs 59: 247-265.
Walker, L.R. 1993. Nitrogen fixers and species replacements in primary succession. . I: Primary
Succession on Lland (ritstj. Miles, J. & Walton, D.W.H.). Special publícation number 12 of the British
Ecological Society, bls. 249-272.
Warren, A.F.J. 1995. The impact of Russel lupin on native river brids. Department of Conservation.
Canterbury Conservancy, Twizel Field Centre, New Zealand, 2 bls.
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