Relationships of Tree Age to Diameter in Old-growth Northern Hardwoods and Spruce-fir

Relationships of Tree Age to Diameter in Old-growth Northern Hardwoods and Spruce-fir PDF Author: William B. Leak
Publisher:
ISBN:
Category : Fir
Languages : en
Pages : 4

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Relationships of Tree Age to Diameter in Old-growth Northern Hardwoods and Spruce-fir

Relationships of Tree Age to Diameter in Old-growth Northern Hardwoods and Spruce-fir PDF Author: William B. Leak
Publisher:
ISBN:
Category : Fir
Languages : en
Pages : 4

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Ecology and Management of Northern Hardwood Forests in New England

Ecology and Management of Northern Hardwood Forests in New England PDF Author: James W. Hornbeck
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ISBN:
Category : Forest ecology
Languages : en
Pages : 52

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Information about Old Growth for Selected Forest Type Groups in the Eastern United States

Information about Old Growth for Selected Forest Type Groups in the Eastern United States PDF Author:
Publisher:
ISBN:
Category : Forest ecology
Languages : en
Pages : 513

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Research Note NE.

Research Note NE. PDF Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 94

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General Technical Report NC.

General Technical Report NC. PDF Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 530

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Guide to Wildlife Tree Management in New England Northern Hardwoods

Guide to Wildlife Tree Management in New England Northern Hardwoods PDF Author:
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ISBN:
Category : Hardwoods
Languages : en
Pages : 202

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Sap-sugar Content of Grafted Sugar Maple Trees

Sap-sugar Content of Grafted Sugar Maple Trees PDF Author: Maurice E. Demeritt
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Category : Sugar-maple
Languages : en
Pages : 8

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Role of Predators on an Artificially Planted Red Oak Borer Population

Role of Predators on an Artificially Planted Red Oak Borer Population PDF Author: Jimmy R. Galford
Publisher:
ISBN:
Category : Borers (Insects)
Languages : en
Pages : 6

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General Technical Report NE

General Technical Report NE PDF Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 876

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Structure and Dynamics in a Virgin Northern Hardwood-spruce-fir Forest

Structure and Dynamics in a Virgin Northern Hardwood-spruce-fir Forest PDF Author: Stanley R. Gemborys
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ISBN:
Category : Forests and forestry
Languages : en
Pages : 20

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A phytosociological investigation was conducted in a virgin northern hardwood-spruce- fir forest in the lower elevations of the Bowl in the White Mountains of New Hampshire to determine the structure and dynamics of relatively small units of the forest. There is no evidence that the composition of the present forest has been influenced by human activity or fire, though portions of the present community demonstrate the effects of catastrophic damage caused by a severe hurricane in 1815. Forty-five 20- by 30-m plots ranging in elevation from 586 to 920 m were studied. Tree densities ranged from 685 to 3,851 stems/ha, basal areas from 22.0 to 60.5 m21ha, and shrub-seedling densities from 0.15 x 105 to 2.27 x 105 stems/ha. Bray and Curtis ordination was used to position the plots on the X and Y axes of a vegetational mosaic. The primary differentiating species were Picea rubens and Acer saccharum on the X axis and Betula alleghaniensis and Fagus grandifolia on the Y axis. The ordination was divided into seven subjectively defined plot clusters based primarily on the size-class distributions of four major tree species found in each plot. Cluster A represents a high-elevation, stable Picea abies unit. Cluster B represents a lower elevation, edaphically controlled Picea-Abies-Fagus grandifolia- Betula alleghaniensis unit which is projected to develop into a Picea-Abies-Fagus grandifolia unit. Clusters C to G represent stages in a successional sequence initiated by a catastrophic blowdown. The sequence is postulated to start with a Betula alleghaniansis Reproduction-Sapling unit, none of which was observed in the present forests of the Bowl. This stage develops into an All-Sized Immature Betula alleghaniensis unit (Cluster C) followed by a Mature Betula alleghaniensis/Sapling Acer saccharum-Fagus grandifolia unit (Cluster D). Then, depending on tree density, will follow a Mature Fagus grandifolia/Residual Decadent Betula alleghaniensis unit (Cluster E) or a Mixed Acer saccharum-Fagus grandifolia/Residual Decadent Betula alleghaniensis unit (Cluster F). Cluster F develops into a Decadent Acer saccharum-Fagus grandifolia unit (Cluster G). This and the unit represented by Cluster E could develop into a Hypothetical Decadent Fagus grandifolia/Acer saccharurn unit.