Fræðaþing landbúnaðarins - 13.02.2009, Side 256

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Hallsdottir, M., 1995: On the pre-settlement history of Icelandic vegetation. Búvísindi - Icelandic
Agricultural Sciences 9: 17-29.
Haukioja, E., Niemelá, P., og Sirén, S., 1985: Foliage phenols and nitrogen in relation to growth, insect
damage, and ability to recover after defoliation, in the mountain birch Betula pubescens ssp tortuosa:
Springer, 214-222.
Kallio, P. og Lehtonen, J., 1973: Birch Forest Damage Caused by Oporinia Autumnata (Bkh.) in 1965-
66 in Utsjoki, N Finland: Dept. of Botany, University of Turku.
Maeda, T. og Soma, K., 1986: Physical properties. I Koij, W. (ritstj.), Ando soils in Japan. Fukuoka:
Kyushu University Press, 99-114.
Margrét Hallsdóttir, 1992: Gróðurfar fyrir landnám. í Hreggviður Nordal (ritstj.), Ásýnd íslands: Fortíð
- nútíð - framtíð: erindi flutt á ráðstefnu Landverndar í Munaðamesi 11. og 12. október 1991.
Reykjavík: Landvernd, 13-16..
Neuvonen, S., Ruohomaki, K., Bylund, H., og Kaitaniemi, P., 2001: Insect herbivores and herbivory
effects on mountain birch dynamics. In Wielgolaski, F. E. (ritstj.), Nordic Mountain Birch Ecosystems.
Paris & Camworth: UNESCO & Partheon Publishing, 207-222.
Olafsdottir, R., Schlyter, P., og Haraldsson, H. V., 2001: Simulating Icelandic vegatation cover during
the Holocene implications for long-term land degradation. Geografiska Annaler, 83A: 203-215.
Olafur Arnalds, Elín Fjóla Þórarinsdóttir, Sigmar Metúsalemsson, Ásgeir Jónsson, Einar Grétarsson, og
Amór Ámason, 2001: Jarðvegsrof á Island. Reykjavík: Landgræðsla ríkisins og Rannsóknastofnun
landbúnaðarins, 121 s.
Shakesby, R. A., 1993: The soil-erosion bridge: a device for micro-profiling soil surfaces. Earth
Surface Processes and Landforms, 18: 823-827.
Shakesby, R. A., Walsh, R. P. D., og Coelho, C. O. A., 1991: New development in techniques for
measuring soil erosion in bumed and unbumed forested catchments, Portugal. Zeitschrift fur
Geomorphologie, Supplementband, 83: 161-174.
Snorri Sigurðsson, 1977: Birki á Islandi. I Hákon Guðmundsson, (ritstj.), Skógarmál. Reykjavík: Edda,
146-172..
Thorsson, J., 2008: Desertification of High Latitude Ecosystems: Conceptual Models, Time-Series
Analyses and Experiments. Dissertation, Texas A&M University, College Station. 242 pp.
White, C. S. og Loftin, S. R., 2000: Response of 2 semiarid grasslands to cool-season prescribed fire.
Joumal of Range Management, 53: 52-61.