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Forest Sciences Commons

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Articles 1 - 4 of 4

Full-Text Articles in Forest Sciences

Mp745: A Long-Term Study Of An Oak Pine Forest Ecosystem: A Brief Overview Of The Holt Research Forest, Jack W. Witham, Malcolm L. Hunter Jr., Hollis C. Tedford Iii, Alan J. Kimball, Alan S. White, Susan Elias Gerken Nov 1999

Mp745: A Long-Term Study Of An Oak Pine Forest Ecosystem: A Brief Overview Of The Holt Research Forest, Jack W. Witham, Malcolm L. Hunter Jr., Hollis C. Tedford Iii, Alan J. Kimball, Alan S. White, Susan Elias Gerken

Miscellaneous Publications

This publication provides an overview of the long-term forest ecosystem project at the Holt Research Forest in Arrowsic, Maine. It is based on nearly 16 years of work by an interdisciplinary team from the College of Natural Sciences, Forestry, and Agriculture, including faculty, professional staff, visiting scientists, University of Maine graduate students, and undergraduate field assistants. We hope this publication will be useful to other researchers, to our workshop participants, and to others interested in forest ecosystem science.


Beryllium Biochemistry In A Forested Ecosystem, Stephen A. Norton, Charles Thomas Hess, Ivan J. Fernandez Sep 1999

Beryllium Biochemistry In A Forested Ecosystem, Stephen A. Norton, Charles Thomas Hess, Ivan J. Fernandez

University of Maine Office of Research Administration: Grant Reports

High rates of atmospheric deposition of beryllium are toxic biologically and are exacerbated by synergistic interaction with aluminum. The Czech Republic is experiencing growing problems, and similar consequences may well soon be experienced in Maine. An expert international research team would pursue parallel pilot studies into the biogeochemical controls on Be fate and transport by examining beryllium biogeochemistry in forested ecosystems. This project funds the work in Maine and travel for international collaboration; the Czechs are supporting the work in their country. The plan for the pilot study is to develop chemical time series for beryllium fluxes into, through, and …


Goali/Iucp: Prediction Of Wood Pulp K-Number With Neural Networks, Mohamad T. Musavi, Daniel Coughlin Jun 1999

Goali/Iucp: Prediction Of Wood Pulp K-Number With Neural Networks, Mohamad T. Musavi, Daniel Coughlin

University of Maine Office of Research Administration: Grant Reports

Lignin holds wood fibers together, and must be removed to produce high strength pulp for kraft paper. The Kappa- or K-number indicates the degree of lignin removal by a pulping process, and is probably the key variable for measuring quality in this process. A difficulty is that it is an off-line measurement. More importantly, there is usually a four hour process delay between when raw materials enter a pulping digester and when the K-number is measured. This makes modeling and control difficult. This Grant Opportunity for Academic Liaison with Industry project uses neural network models to predict K-number as a …


Mr412: Wood Properties Of Red Pine, Takele Deresse, Robert K. Shepard Jan 1999

Mr412: Wood Properties Of Red Pine, Takele Deresse, Robert K. Shepard

Miscellaneous Reports

This report describes important physical and mechanical properties of red pine (Pinus resinosa Ait.) and the factors that influence the variation in these properties. Some results from a recently completed study on red pine in Maine are presented to help illustrate and explain some of the more important concepts and relationships. In addition to studies specific to red pine, important findings on other conifers are presented for comparison with red pine and to provide a more comprehensive review of conifer wood properties. The studies on the other coniferous species help to highlight the sources of wood property variation. With …