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Author : Stanley M. Filip,Elbert Luther Little
Publisher : Unknown
Page : 452 pages
File Size : 47,9 Mb
Release : 1971
Category : Shrubs
ISBN : STANFORD:36105027078117
Author : Stanley M. Filip,Elbert Luther Little
Publisher : Unknown
Page : 28 pages
File Size : 55,8 Mb
Release : 1971
Category : Shrubs
ISBN : UIUC:30112104067720
Author : Anonim
Publisher : Unknown
Page : 18 pages
File Size : 47,7 Mb
Release : 1998
Category : Bartlett Experimental Forest (N.H.)
ISBN : UOM:39015052655746
Author : Stanley R. Gemborys
Publisher : Unknown
Page : 20 pages
File Size : 47,8 Mb
Release : 1996
Category : Forests and forestry
ISBN : MINN:31951D02986053L
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.
Author : Anonim
Publisher : Unknown
Page : 192 pages
File Size : 41,7 Mb
Release : 1987
Category : Forests and forestry
ISBN : UOM:39015049367785
Author : Anonim
Publisher : Unknown
Page : 978 pages
File Size : 51,9 Mb
Release : 1972
Category : Government publications
ISBN : UOM:39015022681731
Author : Anonim
Publisher : Unknown
Page : 1386 pages
File Size : 47,8 Mb
Release : 2024-06-26
Category : Government publications
ISBN : WISC:89117116400
Author : Northeastern Forest Experiment Station (Radnor, Pa.)
Publisher : Unknown
Page : 362 pages
File Size : 50,9 Mb
Release : 1971
Category : Forests and forestry
ISBN : UOM:39015001294456
Author : United States. Superintendent of Documents
Publisher : Unknown
Page : 1466 pages
File Size : 43,5 Mb
Release : 1976
Category : United States
ISBN : STANFORD:36105019598577
Author : Anonim
Publisher : Unknown
Page : 736 pages
File Size : 44,6 Mb
Release : 1980
Category : Forest reserves
ISBN : STANFORD:36105005944231
Author : Anonim
Publisher : Unknown
Page : 628 pages
File Size : 41,7 Mb
Release : 1980
Category : Forests and forestry
ISBN : UOM:39015001295032
Author : Anonim
Publisher : Unknown
Page : 134 pages
File Size : 45,8 Mb
Release : 1980
Category : Electronic
ISBN : MINN:31951D02974642I
Author : Anonim
Publisher : Unknown
Page : 1376 pages
File Size : 50,8 Mb
Release : 1972
Category : Agriculture
ISBN : UIUC:30112102097893
Author : Anonim
Publisher : Unknown
Page : 746 pages
File Size : 52,8 Mb
Release : 1993
Category : Forest genetics
ISBN : OSU:32435030501084
Author : Anonim
Publisher : Unknown
Page : 614 pages
File Size : 53,7 Mb
Release : 2024-06-26
Category : Forests and forestry
ISBN : CORNELL:31924101508988
