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EXECUTIVE SUMMARY - UNESCO World Heritage

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dry<br />

moderately<br />

humid<br />

wet<br />

very<br />

acidic<br />

beech had colonised about 50% and the<br />

second half up to the present time. But<br />

the beech’s expansive capacity is unbroken:<br />

expansive tendencies are observed on the<br />

British Isles, in Scandinavia, and in Poland<br />

(CZAJKOWSKI et al. 2006). According<br />

to POTT (1992), the beech has never been<br />

able to take over its potential distribution<br />

area even in the Northwest German lowlands.<br />

While the ongoing beech expansion in the<br />

Northwest German plain (HANSTEIN<br />

2000), Northeast Central Europe, and<br />

South Scandinavia should rather be considered<br />

to be a retaking of terrain that became<br />

lost in the course of its usage, the development<br />

in Great Britain and Norway appears<br />

to be the “consummation” to an incomplete<br />

postglacial immigration process<br />

(CZAJKOWSKI et al. 2006) (fi g. 2.17).<br />

too dry for forests<br />

Fagus sylvatica<br />

to wet for forests<br />

moderately<br />

acidic<br />

neutral alkaline<br />

dominant copper<br />

beech area<br />

Th is means that the beech has not yet arrived<br />

at its climatic limit (LANG 1994), which is<br />

also expanding in the course of the present<br />

climate change (SYKES et al. 1996, BOX<br />

& MANTHEY 2006) and absence of<br />

historic landuse practises eliminating beech.<br />

Changes of the beech distribution area<br />

within the context of climate change, however,<br />

are anticipated not to take place but<br />

along the edge of the present potential distribution.<br />

Th e present beech distribution<br />

area in its large core area will remain unaff<br />

ected by climate change (KÖLLING et<br />

al. 2005).<br />

2. DESCRIPTION<br />

Fig. 2.16: Ecogram of the beech,<br />

which forms forests in the<br />

Central European submontane<br />

zone with temperate suboceanic<br />

climates (according to ELLEN-<br />

BERG 1996). Narrower<br />

physiologic optimum range<br />

(dark green), wider potential<br />

range, physiological amplitude<br />

(bright green) are highlighted.<br />

Germany is the core area of<br />

this ongoing ecological<br />

process, which comprises<br />

the evolutionary development<br />

of the beech forest<br />

ecosystems as well as the<br />

biotic moulding of the<br />

Central European landscape.<br />

The nominated<br />

component parts are expressive<br />

of this process<br />

as well as its development<br />

trend.<br />

Nationale<br />

Naturlandschaften<br />

71

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