Sugar Maple Seed Production in Northern New Hampshire PDF Download
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Author: Peter W. Garrett
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 12
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Book Description
Large numbers of sugar maple seed are dispersed every second or third year. Very little seed was damaged by insects or mammals prior to dispersal. The trapping methods used prevented major losses following seed fall. Seed production was positively correlated with tree diameter and density but not with age of seed trees.
Author: Peter W. Garrett
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 12
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Book Description
Large numbers of sugar maple seed are dispersed every second or third year. Very little seed was damaged by insects or mammals prior to dispersal. The trapping methods used prevented major losses following seed fall. Seed production was positively correlated with tree diameter and density but not with age of seed trees.
Author: Harry Wolodymyr Yawney
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 16
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Author: Raymond E. Graber
Publisher:
ISBN:
Category : Beech
Languages : en
Pages : 16
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Seed fall was measured for 11 years in a 200-year-old stand of sugar maple (Acer saccharurn Marsh.), yellow birch (Betula alleghaniensis Britton), and beech (Fagus grandifolia Ehrh.) in New Hampshire. These species accounted for 98 percent of the seed fall. Yellow birch had 5 good seed years, sugar maple had 3, and beech had none. Time of seed fall varied among species and years. Viable seed fall of yellow birch in good seed years began in August and continued through autumn and winter. Most of the viable sugar maple seed fell during a short period in October, just before and after leaf fall. Beech seed fall was similar, but occurred slightly later than sugar maple. Seed losses caused by pollination or fertilization failure, abortion, incomplete development, insects, small mammals, and birds varied widely among years, but averaged about 2/3 of the potential seed crop. Losses often were proportionally greater during poor seed years.
Author: Stephen Braithwaite Horsley
Publisher:
ISBN:
Category : Sugar maple
Languages : en
Pages : 132
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 1240
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Author: United States. Forest Service
Publisher: Forest Service
ISBN:
Category : Gardening
Languages : en
Pages : 1240
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Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 332
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Author: Paul Hanson
Publisher: Springer Science & Business Media
ISBN: 1461300215
Category : Science
Languages : en
Pages : 487
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Large-scale experimentation allows scientists to test the specific responses of ecosystems to changing environmental conditions. Researchers at Oak Ridge National Laboratory together with other Federal and University scientists conducted a large-scale climatic change experiment at the Walker Branch Watershed in Tennessee, a model upland hardwood forest in North America. This volume synthesizes mechanisms of forest ecosystem response to changing hydrologic budgets associated with climatic change drivers. The authors explain the implications of changes at both the plant and stand levels, and they extrapolate the data to ecosystem-level responses, such as changes in nutrient cycling, biodiversity and carbon sequestration. In analyzing data, they also discuss similarities and differences with other temperate deciduous forests. Source data for the experiment has been archived by the authors in the U.S. Department of Energy's Carbon Dioxide Information and Analysis Center (CDIAC) for future analysis and modeling by independent investigators.
Author: Lawrence E. Osborn
Publisher:
ISBN:
Category : Liriodendron tulipifera
Languages : en
Pages : 688
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Book Description
S2In West Virginia, yellow-poplar (Liriodendron tulipifera) is abundant and is a prime candidate for increased utilization in a variety of manufacturing industries. Computer simulations are a cost-effective tool for estimating potential cutting yields from lumber. They can be used to promote increased use of yellow-poplar in the furniture, cabinet, and architectural woodworking industries and may also lead to increased utilization of the lower grades of lumber. This paper describes the data collection methods and the format of the new West Virginia yellow-poplar lumber defect database that was developed for use with computer simulation programs. The database contains descriptions of 627 boards, totaling approximately 3,800 board feet, collected in West Virginia for grades FAS, FASIF, No. 1 Common, No. 2A Common, and No. 28 Common.S3.
Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 300
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