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Fig. 2 | BMC Ecology

Fig. 2

From: Alpine ecology, plant biodiversity and photosynthetic performance of marker plants in a nitrogen gradient induced by Alnus bushes

Fig. 2

Schematic drawing of the experimental site with the three main vegetation zones characterized by the dominant marker plants species Alnus, Calamagrostis and dwarf shrubs. The squares of 1 m2 used for floristic investigation are arranged as horizontal (1–6) and vertical (7–12) transects. The locations of the sampling of soil for nitrate determination and of the plant leaves for fluorescence measurements are labeled as b-1 to b-4; b-5 is some 100 m away from Alnus trees in a dwarf shrub area

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