Summary and Conclusions
Much of the discussion in preceding chapters has dealt with the essentially climatic relationships between the vegetation of the forest-tundra ecotone and the climatic conditions that prevail in this interesting zone, and there is, hence, little need for further discussion of the existing literature here. There is, however, some need for a codification of the data and the various observations and thoughts of those individuals who have seen the ecotone during the course of biological explorations or botanical and ecological research and who have commented in some significant way upon the apparent physiological relationships between the plants and climate in the region. Rather than discuss these observations and research results in a complete and exhaustive — perhaps exhausting — commentary, I leave to those interested in pursuing the topic further those many titles in the bibliography. Here I will summarize, more or less in chronological order, those observations that have appeared, to me, the most significant for furthering understanding of the ecological relationships existing in the ecotonal region, without, however, making any assumption that others might make the identical selection.
KeywordsEurope Photosynthesis Charcoal Holocene Betula
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