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Full-Text Articles in Life 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 …
The Dandy Scroll, Fall 2004, University Of Maine Pulp And Paper Foundation
The Dandy Scroll, Fall 2004, University Of Maine Pulp And Paper Foundation
General University of Maine Publications
The Fall 2004 issue of The Dandy Scroll newsletter produced by the University of Maine Pulp and Paper Foundation.
The Dandy Scroll, Spring 2004, University Of Maine Pulp And Paper Foundation
The Dandy Scroll, Spring 2004, University Of Maine Pulp And Paper Foundation
General University of Maine Publications
The Spring 2004 issue of The Dandy Scroll newsletter produced by the University of Maine Pulp and Paper Foundation.
Development And Light Response Of Leaves Of Metasequoia And Close Relatives, Xiaochun Li
Development And Light Response Of Leaves Of Metasequoia And Close Relatives, Xiaochun Li
Electronic Theses and Dissertations
Metasequoia glyptostroboides is a useful nearest living relative (NLR) of the Eocene fossil Metasequoia. Research on modern Metasequoia might give us some clues about its fossil counterpart. During this study the leaf anatomy of Metasequoia, Glyptostrobus, Sequoia and Taxodium was investigated with light microscopy and transmission electron microscopy. Metasequoia exhibits several characteristics of typical sciaphilic plants, such as slightly arched outer cell walls in the adaxial epidermal cells, strongly arched outer cell walls in the abaxial epidermal cells, mesophyll composed of spongy cells, chloroplasts with well-developed grana not only in mesophyll cells but in both the adaxial and abaxial epidermis. …
Aesthetic Values Of Five Primary Wood Transporting Methods Common To Northern New England, Michael C. Eckley
Aesthetic Values Of Five Primary Wood Transporting Methods Common To Northern New England, Michael C. Eckley
Electronic Theses and Dissertations
Throughout northern New England and across the country, increasing populations and the exurbanization of rural forested landscapes have had a tremendous impact on forest management. As forested areas become more populated, society has become more exposed to the sights and sounds associated with different forest operations. As a result, aesthetics are increasingly driving public reaction to and concern about forestry practices, especially timber harvesting. How people perceive forestry harvesting can be significant in defining the future of forest management, particularly in more populated woodlands. The objective of this study was to better understanding public values as they relate to timber …
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 …