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Full-Text Articles in Forest Sciences
Collaborative Research: Developing Methods To Study Age-Related Changes In The Physiology Of Forest Trees, Michael S. Greenwood
Collaborative Research: Developing Methods To Study Age-Related Changes In The Physiology Of Forest Trees, Michael S. Greenwood
University of Maine Office of Research Administration: Grant Reports
Trees continue to increase in size and complexity over life spans that may last many centuries, and each year the growing regions of their shoots produce new foliage and reproductive structures. As they grow older and larger, forest trees appear to grow more slowly, produce thicker foliage and more reproductive structures. These changes are likely to be associated with age-related declines in the growth rates of forest stands, which occur before the mid-point of the lifespan of important timber species. Although similar patterns of age- and size-related change in the morphology and physiology of foliage have been described for numerous …
Leaf Area Index - Relative Density Relationships In Even-Aged Abies Balsamea - Picea Rubens Stands In Maine, Robert Justin Derose
Leaf Area Index - Relative Density Relationships In Even-Aged Abies Balsamea - Picea Rubens Stands In Maine, Robert Justin Derose
Electronic Theses and Dissertations
Relationships between leaf area index (LAI) and relative density (RD) were examined in even-aged stands of Abies balsunzen (L.) Mill. and Piceu rubens Sarg. Twelve sites distributed across the Acadian forest in Maine were used to test conformance to three hypothesized models of LA1 over RD: A) constantly increasing LA1 over increasing RD, B) constant LA1 with increasing RD, or C) decreasing LA1 with increasing RD. Multivariate ordination suggested young, precommercially thinned (PCT), high-siteindex (SI) A. balsamea stands should be analyzed separate from older, unspaced (NOPCT), lower-site P. rubens stands. All-sided A. balsamea LAIs ranged from 6.2 - 14.8 over …