Get Alpine Treelines: Functional Ecology of the Global High PDF

By Christian Körner

ISBN-10: 3034803958

ISBN-13: 9783034803953

Alpine treelines mark the low-temperature restrict of tree progress and take place in mountains world-wide. providing a significant other to his e-book Alpine Plant Life, Christian Körner offers an international synthesis of the treeline phenomenon from sub-arctic to equatorial latitudes and a practical clarification in keeping with the biology of timber. the great textual content ways the topic in a multi-disciplinary manner through exploring woodland styles on the fringe of tree lifestyles, tree morphology, anatomy, climatology and, in response to this, modelling treeline place, describing copy and inhabitants methods, improvement, phenology, evolutionary points, in addition to summarizing proof at the body structure of carbon, water and nutrient family members, and tension body structure. It closes with an account on treelines long ago (palaeo-ecology) and a bit on worldwide swap results on treelines, now and sooner or later. With greater than a hundred illustrations, lots of them in color, the e-book indicates alpine treelines from worldwide and provides a wealth of clinical details within the type of diagrams and tables.

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Additional resources for Alpine Treelines: Functional Ecology of the Global High Elevation Tree Limits

Example text

At a temperature close to the seasonal mean temperature, air temperature equals soil temperature, which is a useful coincidence. 1. Summary of root-zone temperature data ( C) from climatic treelines for the bioclimatic zones as presented in Figs. 9. ). 3 Treeline temperatures in different bioclimatic regions This section offers examples for the seasonal course of temperature at treelines in different climatic zones during the past 15 years. Although temperatures were measured in soil under trees, these temperatures resemble diurnal means of air temperature, given the resolution of the diagrams shown (Fig.

2). 2 are for various mountain areas, and in no case was the root zone temperature warmer under forest growing on equator-facing slopes (see also Treml and Banas 2008). The variation rather reflects overall region to region variation in climate. However, on very steep slopes in northern Scandinavia, Kj€allgren and Kullman (1998) did find moderate (<100 m) exposure effects of Betula treeline elevation, not what is seen on more gentle slopes beyond the polar circle (K€ orner and Paulsen 2004). From the above it is obvious that the actual life conditions need to be known or approximated in order to identify those facets of the temperature regime which matter for treeline position.

4 Treeline elevation Treeline elevation varies with latitude (Figs. 4). At ca. 72 N (central northern Siberia) and ca. 4 S (Cape Horn National Park, Chile), the Arctic and Antarctic lowland tundra and the tree limit are merging at sea level. At only 2–4 lower latitude high elevation treelines can be found at 300–600 m above sea level, and it rapidly climb to above 1000 m in the centre of the boreal zone. In the temperate zone, treeline elevations may be anywhere between 1600 and 3600 m depending on the regional climate, 25 26 3 Treeline patterns continentality and the ‘massenerhebungseffekt’ in particular.

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Alpine Treelines: Functional Ecology of the Global High Elevation Tree Limits by Christian Körner

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