By Christian Körner
Alpine treelines mark the low-temperature restrict of tree progress and take place in mountains world-wide. proposing a better half to his publication Alpine Plant Life, Christian Körner presents an international synthesis of the treeline phenomenon from sub-arctic to equatorial latitudes and a useful rationalization in keeping with the biology of timber. the excellent textual content techniques the topic in a multi-disciplinary approach through exploring wooded area styles on the fringe of tree existence, tree morphology, anatomy, climatology and, in response to this, modelling treeline place, describing replica and inhabitants techniques, improvement, phenology, evolutionary points, in addition to summarizing proof at the body structure of carbon, water and nutrient relatives, and pressure body structure. It closes with an account on treelines long ago (palaeo-ecology) and a bit on international switch results on treelines, now and sooner or later. With greater than a hundred illustrations, lots of them in color, the publication exhibits alpine treelines from worldwide and gives a wealth of medical info within the kind of diagrams and tables.
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Additional info for Alpine Treelines: Functional Ecology of the Global High Elevation Tree Limits
The following assessment will thus heavily lean upon a global data set obtained between 1996 and 2008 by K€ orner and Paulsen (2004) and the follow up, so far unpublished continuation of that campaign. 1 Specific aspects of treeline climatology It had never been seriously questioned that climatic factors control the natural high elevation treeline. Global as well as regional distributional patterns of upper treelines do not offer any hint at C. g. g. any snow- and icerelated effects, see Chap. 3).
10). As will be shown, low temperature extremes are not a survival issue for taxa adapted to treeline conditions. During winter-dormancy in seasonal climates, life activities are drastically reduced, hence, also processes responsive to gradual temperature effects are hardly affected during that period (see Chap. 11). This is why mean annual temperatures (MAT) are biologically meaningless and should be abandoned in functional ecology wherever possible, as was already urged by Schimper (1898). They amalgamate periods during which variations in temperature have hardly any biological effect with periods during which temperature variation exerts large biological effects (the growing period).
A schematic presentation of the treeline ecotone with the various terms used in this book self-explanatory and is the logical analogue to the established term arctic treeline. Because there are many treelines outside mountains, it is commonly advised to add a specification such as ‘high elevation’, ‘cold climate’, ‘alpine’ or ‘arctic’. In order to separate biological from other treelines, one may add ‘natural’ or ‘climatic’. Given the self-evident context in this book, I will use treeline sensu stricto, and when there is a need to distinguish it from the arctic treeline, I will use ‘alpine treeline’.
Alpine Treelines: Functional Ecology of the Global High Elevation Tree Limits by Christian Körner