Natural variation in balsam fir foliar components of dietary importance to spruce budworm

Autor:	C. H. A. Little, G. G. Shaw
Rok vydání:	1977
Předmět:	Balsam Global and Planetary Change education.field_of_study Ecology Population food and beverages Forestry Biology Natural variation biology.organism_classification Horticulture Nutrient Botany education Spruce budworm
Zdroj:	Canadian Journal of Forest Research. 7:47-53
ISSN:	1208-6037 0045-5067
DOI:	10.1139/x77-007
Popis:	Year-to-year, geographical, and local variations in foliar concentrations of crude fat, nitrogen, total sugars, and starch and in foliar caloric value were determined for maturing, current-year needles of balsam fir (Abiesbalsamea L.). All except geographical variations proved to be statistically significant. Seasonal trends of chemical concentrations in maturing needles were in agreement with previous findings.Much of the variation in foliar caloric value could be explained by changes in foliar concentration of crude fat.Year-to-year changes in foliar nutrients may influence spruce budworm population dynamics.
Databáze:	OpenAIRE
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