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Spatial patterning in the canopy gap regime of a subalpine Abies-Picea forest in the northeastern United States

by Harney, Ellen M.B. , Battles, John J. , Fahey, Timothy J.

in ABIES / Abies balsamea / altitude / Betula papyrifera / BOSQUE SUBALPINO / Britton & Brown / Canopy gaps / COMMUNAUTE VEGETALE / COMUNIDADES VEGETALES / dead wood / DINAMICA DE LA POBLACION / DISTRIBUCION DE LA POBLACION / DISTRIBUTION DES POPULATIONS / Disturbance / DYNAMIQUE DES POPULATIONS / ECOLOGIA FORESTAL / ecological succession / ECOLOGIE FORESTIERE / Environmental gradient / Forest canopy / FOREST ECOLOGY / Forest regeneration / FORET SUBALPINE / Line intersect sampling / microhabitats / Mountain forests / natural regeneration / NEW YORK / NUEVA YORK / Old growth forests / Old-growth forest / PICEA / Picea rubens / PLANT COMMUNITIES / PLANT POPULATION / POBLACION VEGETAL / POPULATION DISTRIBUTION / POPULATION DYNAMICS / POPULATION VEGETALE / spatial distribution / spatial variation / SUBALPINE FORESTS / Temperate rain forests / Topographical elevation / Trees

1995

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Spatial patterning in the canopy gap regime of a subalpine Abies-Picea forest in the northeastern United States

by Harney, Ellen M.B. , Battles, John J. , Fahey, Timothy J.

1995

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Spatial patterning in the canopy gap regime of a subalpine Abies-Picea forest in the northeastern United States

by Harney, Ellen M.B. , Battles, John J. , Fahey, Timothy J.

1995

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Journal Article

Spatial patterning in the canopy gap regime of a subalpine Abies-Picea forest in the northeastern United States

Harney, Ellen M.B.,

Battles, John J.,

Fahey, Timothy J.

1995

Overview

Spatial patterning in the disturbance regime of a forest affects the vegetation dynamics. Therefore, the distribution of canopy gaps was examined in detail for a subalpine Abies-Picea forest in the northeastern United States. Gaps were not randomly distributed. The fraction of forest area in gaps and the abundance of gaps varied significantly with topographic position, elevation, and slope percent. On average, 15 % of the forest was influenced by gaps, but the gap fraction was greater near ridges (23 %) and near streams (27 %) than on the backslope (13 %). Also, gaps were larger and more abundant near streams and ridges. Gap fraction varied with elevation as well: more of the forest was disturbed at lower and higher elevations than at mid-elevations. Significantly more of the forest on steep slopes (≥ 30 %) was under gaps. As a result of this patterning, some parts of the Abies-Picea forest were predictably more disturbed than others. A remaining question is whether this patterning is sufficient to influence the regeneration environment and thus forest composition.

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Blackwell Publishing Ltd,Opulus Press

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