Download e-book for iPad: Alpine Plant Life: Functional Plant Ecology of High Mountain by Christian Körner

By Christian Körner

ISBN-10: 3540003479

ISBN-13: 9783540003472

ISBN-10: 3642189709

ISBN-13: 9783642189708

Recent years have obvious renewed curiosity within the fragile alpine biota. The overseas 12 months of Mountains in 2002 and various foreign courses and tasks have contributed to this. due to the fact that approximately 1/2 mankind is dependent upon water provides originating in mountain catchments, the integrity and sensible signi?cance of the upland biota is a key to human welfare and should obtain much more consciousness as water turns into an more and more constrained source. Intact alpine vegetation,as the shield of the water towers of the area, is worthy being good understood. This re-creation of Alpine vegetation is an replace with over a hundred new references,new diagrams, revised and prolonged chapters (particularly 7, 10, eleven, 12, sixteen, 17) and now additionally bargains a geographic index. My thank you visit the various cautious readers of the ?rst version for his or her most respected reviews, in parti- lar to Vicente I. Deltoro (Valencia) and Johanna Wagner (Innsbruck). Basel,April 2003 Christian Körner Preface to the ?rst version one of many greatest average organic experiments, maybe the single one replicated throughout all latitudes and all climatic regions,is uplift of the l. a.- scape and publicity of organisms to dramatic climatic gradients over a truly brief distance, differently purely obvious over hundreds of thousands ofkilometers of poleward touring. Generations of plant scientists were occupied with those ordinary try out areas,and have explored plant and atmosphere responses to alpine existence stipulations. Alpine vegetation is an try at a synthesis.

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Additional info for Alpine Plant Life: Functional Plant Ecology of High Mountain Ecosystems

Sample text

Seed beds of alpine plants on dark humic soils exposed to full sunlight have been shown to heat up to temperatures of around 80°C (Alps of Tirol, Turner 1958b; Australian Snowy Mountains, Korner and Cochrane 1983). Such temperatures are sterilizing the topsoil - life in hot deserts? How cold is the cold climate of alpine plants? It all depends on three components: • Solar radiation • Slope and exposure Plant stature Additional components which modulate the interplay of the three main drivers are wind velocity, ambient air temperature above the vegetation and soil properties such as surface structure, moisture and thermal conductivity.

As a consequence, half of the total atmospheric moisture of the earth is contained in the lower 2000 m of the 1000 atmosphere. Unless transpiring surfaces heat up during periods of strong radiation (see Chap. g. human skin) the driving forces for evaporation of water are reduced at high altitude, despite OL-__L -_ _L -_ _L-__L -_ _L -_ _ increased diffusivity. 15 A word on relative humidity: this common Turbidity coefficient descriptor of air humidity (the ratio of actual to saturating vapour pressure of air at a given tem- Fig.

1 and below) and the effect In other words, the mean CO 2 concentration requires absence of any convective transport expressed in units like ppm, 1l11-t, Ilmolmol-t, (wind) to become fully expressed, as in the interiIlbar bar-lor PaMPa- 1 is always the same, in 1996 or of leaves (Gale 1972), through egg shells (Rahn ca. 360ppm (currently rising by ca. 4 ppm a-I). At et al. 1977) or in any undisturbed aerodynamic sea level this value corresponds to a partial pres- boundary layer of an evaporating surface.

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Alpine Plant Life: Functional Plant Ecology of High Mountain Ecosystems by Christian Körner

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