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

By Christian Körner

Generations of plant scientists were enthusiastic about alpine flowers - with the publicity of organisms to dramatic climatic gradients over a truly brief distance. This entire textual content treats quite a lot of subject matters: alpine weather and soils, plant distribution and the treeline phenomenon, physiological ecology of water-, dietary- and carbon kin of alpine vegetation, plant tension and plant improvement, biomass construction, and facets of human affects on alpine crops. Geographically the publication covers all components of the area together with the tropics.

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

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Erect plant ... ~ {:}. 6 1:'~ 6 • 20 • 0- E 15 0) ••• ....... 6 ~66 ~ c ~ a.. 10 Central Alps 2300 m 25 5 0 0 5 10 15 20 25 - 20 () ~ Air temperature (OC) Fig. 9. Plant temperature as modified by plant life form at 3800 m altitude in the Rocky Mountains of Colorado. 5°C at an air temperature of 21°C). He suggested in accordance with Dahl (1951) that such prostrate plants are unable to survive at lower altitudes, because of these pronounced decoupling effects from atmospheric temperature conditions.

In addition, upright structures 'en are usually better coupled to atmospheric tempe- (\j 3 Ecuadorian Andes, 4510 m rature by enhanced heat convection (Figs. 9). §. 0 rian Andes. It is important to note that both these LL 0 plant species have their apex 2-3 cm below the a ground, hence meristem temperatures may not be [) 25 Hypochoeris ~ so different. /~ ~ 20 In addition to these passive effects of plant ::J iO structure on microclimate, alpine plants may Q> 15 a. actively influence their microclimate by leaf move- E ments - a phenomenon also well-known from 2 10 c \ hot desert environments.

The intensity measured in the direction of the sun, outside the atmosphere (ca. 1360 W m-2 , Barry 1981). This can happen when a thin layer of clouds (strato-cirrus) leaves a gap in the direction of midday sun (Fig. 11). g. 1000 W m-2 or a QFD of ca. g. 500Wm-2 or 1000/-lmolm-2 s- l , summing up to 1500Wm-2 or 3000/-lmolm-2 s-1, values actually measured by the author in midsummer at 2600 m altitude near Innsbruck. Turner (l958a) measured 18% more than maximum clear sky radiation under such conditions near the treeline.

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