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150325s1968 xx |||||o 00| ||eng c |
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|a 10.2307/3564732
|2 doi
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|a (DE-627)JST063620278
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|a (JST)3564732
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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1 |
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|a Pears, N. V.
|e verfasserin
|4 aut
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|a The Natural Altitudinal Limit of Forest in the Scottish Grampians
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|c 1968
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|a Text
|b txt
|2 rdacontent
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|a Computermedien
|b c
|2 rdamedia
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|a Online-Ressource
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|a The present upper forest margins of the north east Scottish Grampians are not at their natural level. Evidence for the natural altitudinal limit of the Caledonian Forest in this region today is examined. The available temperature data indicates a tree-line approaching 760 m. The results of simple experiments to measure relative wind exposure in the Cairngorm Mountains are presented. Wind is shown to be an important factor and to modify significantly the level determined by temperature alone. Data on the distribution of high-level tree seedlings, subalpine scrub and Gaelic place-names also suggest a lower level. On exposed slopes the potential tree-line is unlikely to exceed 610 m. It would probably extend to 685 m in sheltered localities. A map of the natural limits is included. /// Верхние границы лесов в северо-восточиых Грэмпиенс не являются первичными. В настоящее время делаются попытки установить естественные границы лесов Каледонии. Температурные данные показывают, что деревья могут произрастать и на высоте около 760 м. Приведены результаты исследования снлы и направления ветра в горах Кэйрнгорм. Ветер является очевидно важным фактором, определяющим границу лесов. Характер респределения подроста деревьев и субальпийских кустарников в горах также свидетельствует о более низком уровне распространеия этой растительности, чем позволяет температурный режим. На прогреваемых склонах потенциальная граница леса превышает высоту 610 м. Она может вероятно доходить до 685 м в укрытых от ветра местах. Дается карта естественных границ лесов в горах.
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| 650 |
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4 |
|a Biological sciences
|x Biology
|x Developmental biology
|x Growth and development
|x Developmental stages
|x Seedlings
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| 650 |
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4 |
|a Biological sciences
|x Biology
|x Botany
|x Dendrology
|x Trees
|x Evergreen trees
|x Conifers
|x Pine trees
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| 650 |
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4 |
|a Biological sciences
|x Ecology
|x Population ecology
|x Synecology
|x Biocenosis
|x Plant communities
|x Forests
|x Coniferous forests
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| 650 |
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4 |
|a Biological sciences
|x Agriculture
|x Agricultural management
|x Agricultural production
|x Agricultural cycles
|x Growing seasons
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| 650 |
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4 |
|a Physical sciences
|x Metrology
|x Altimetry
|x Altitude
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| 650 |
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4 |
|a Biological sciences
|x Biology
|x Botany
|x Dendrology
|x Trees
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| 650 |
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4 |
|a Biological sciences
|x Biology
|x Botany
|x Plant physiology
|x Plant growth
|x Tree physiology
|x Tree growth
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| 650 |
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4 |
|a Biological sciences
|x Biology
|x Botany
|x Plant ecology
|x Forest ecology
|x Forest cover
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| 650 |
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4 |
|a Physical sciences
|x Earth sciences
|x Geography
|x Geomorphology
|x Topography
|x Highlands
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| 650 |
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4 |
|a Environmental studies
|x Atmospheric sciences
|x Meteorology
|x Meteorological phenomena
|x Weather
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| 655 |
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4 |
|a research-article
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| 773 |
0 |
8 |
|i Enthalten in
|t Oikos
|d Nordic Society Oikos, 1949
|g 19(1968), 1, Seite 71-80
|w (DE-627)320648400
|w (DE-600)2025658-9
|x 16000706
|7 nnns
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| 773 |
1 |
8 |
|g volume:19
|g year:1968
|g number:1
|g pages:71-80
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| 856 |
4 |
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|u https://www.jstor.org/stable/3564732
|3 Volltext
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|u https://doi.org/10.2307/3564732
|3 Volltext
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|d 19
|j 1968
|e 1
|h 71-80
|