By William Dwight Billings (auth.), Walter C. Oechel, Terry V. Callaghan, Tagir G. Gilmanov, Jarle I. Holten, Barrie Maxwell, Ulf Molau, Bjartmar Sveinbjörnsson (eds.)
Global warming is probably going to have the best impression at excessive latitudes, making the Arctic a big zone either for detecting international weather swap and for learning its results on terrestrial ecosystems. The chapters during this quantity deal with present and expected affects of world weather switch on Arctic organisms, populations, surroundings constitution and serve as, organic variety, and the atmosphere.
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Additional info for Global Change and Arctic Terrestrial Ecosystems
Cold soils underlain with permafrost. Boggy and wet peatlands. Existing boreal forests that shade out seedlings. The lack of appropriate bird or mammal seed vectors. Daylength problems with flowering, leaf, and bud dormancy mechanisms; latitudinally controlled daylength and solar angle parameters are tied in with plant genetic structure. Increased chance of severe frost during the growing season. Lack of sufficient seed sources from local ecotypes. Such resistance information and quantitative estimates need to be incorporated into the models.
North America and Adjacent Oceans During the Last Deglaciation. The Geology of North America (Vol. K-3, Chap. 13, pp. 277-288, 2 map plates). Boulder, CO: The Geological Society of America. P. 1982. Measurements of the concentration of carbon dioxide at Mauna Loa Observatory, Hawaii. e. ), Carbon Dioxide Review: 1982 (pp. 377-385). New York: Oxford University Press. , and Larcher, W. 1988. Plant life in cold climates. 1. ), Plants and Temperature (Vol. 42, pp. 25-57). Cambridge, UK: Society for Experimental Biology.
D. Billings go into this dormancy at longer photoperiods than do alpine populations from the middle latitudes. Plants of alpine ecotypes grow faster at higher temperatures whereas arctic ecotypes have lower optimum temperatures for growth and flowering. Dark respiration rates at any experimental temperature in the laboratory are increased by cold acclimation in all ecotypes. But actual respiration rates in the field may not be higher than in warm-acclimated plants due to the colder temperatures that govern metabolism under field conditions.