The immigration and present distribution of the Greenland "trees": Alnus crispa (Ait.) Pursh, Betula pubescens Ehrh. s.l. and Sorbus groenlandica (Schneid.) Löve & Löve is summarized. As a consequence of a very limited knowledge of the ecological conditions in this zone, the Nordic Subarctic Birch Project (SBP) organized a field trip to S Greenland in 1984 followed by a symposium in Copenhagen in 1988. The present volume of Meddr Grønland brings the results of these two events.
Fredskild, B. and Ødum, S.: The Greenland Mountain birch zone, an introduction
Feilberg, J. and Folving, S.: Mapping and monitoring of woodlands and scrub vegetation in Qingua-dalen, South Greenland
Sulkinoja, M.: Hybridization, introgression and taxonomy of the Mountain birch in SW Greenland compared with related results from Iceland and Finnish Lapland
Kauhanen, H.: On stomatal behaviour in the Greenland Mountain birch
Tenow, O.: Altitudinal and within-crown distribution of insect grazing on Mountain birch (Betula pubescens coll.) in SW Greenland and NW Norway
Ødum, S.: Afforestation experiments reflecting the treeline conditions in Southwest Greenland
Eurola, S, Laine, K and Knudsen, H.: Larger fungi associated with Betula pubescens in Greenland
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