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Riverside forest at the river corridor Lech

Riverside forest at the river corridor Lech. Riverside forest at the river corridor Lech. Important for the development of societies Elevation above the river and the water level Speed of fluid Suspend matter. Succession of habitats that depend on the type of substratum.

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Riverside forest at the river corridor Lech

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  1. Riversideforest at the river corridor Lech

  2. Riverside forest at the river corridor Lech Important for the development of societies • Elevation above the river and the water level • Speed of fluid • Suspend matter

  3. Succession of habitats that depend on the type of substratum

  4. Succession of habitats that depend on the type of substratum

  5. Succession of habitats that depend on the type of substratum

  6. Habitats that depend on type on aggregation of materials

  7. Habitats that depend on type on aggregation of materials • Connection between the development of soil and vegetation • Regressive naturally development near the river • Anthropogenic degradations • Softwood riverside-forest have a fast pass through succession • Hardwood forests – succession slower

  8. Habitats that depend on type of soil and elevation

  9. Habitats that depend on type on aggregation of materials • Water engraved 1,5 m deeper as a consequence of barriers and dams • Periodical sedimentation of the river decreased; degradation started • Restoration of the river started (2001 Natura 2000 status)

  10. Examples of pioneer societies 1.) Epilobietum fleischeri With dominant herbs: • Linaria alpina • Saxifraga aizoides • Anthlyllis vulneraria • Cerastium pedunculatum

  11. Examples of pioneer societies 1.) Epilobietum fleischeri • Frequently moved gravel • Sand banks • Glacial drifts with an annual influence of the river dynamic • Result of alteration of deposits and accretes

  12. Examples of pioneer societies 2.) Myricario - Chondrilletum With dominant plants: • Chondrilla chondrilloides • Dryas octopetala • Myricaria germanica • Salix purpurea • Salix elaeagnos

  13. Examples of pioneer societies 2.) Myricario - Chondrilletum • Annually flooded gravel banks • Nutrient – poor soil • Provides the stabilization of soil

  14. Examples of pioneer societies 3.) Salici Myricarietum Dominated by: • Myricaria germanica • Salix purpurea • Salix elaeagnos • Pinus sylvestris

  15. Examples of pioneer societies 3.) Salici Myricarietum • Gravel banks • Basic and nutrient poor soil • Endures overflooding and overthrowing • Starts to settle only on silt • 0,5 – 1,5 m above the middle water line

  16. Examples of pioneer societies 4.) Salicetum elaeagno purpureae Dominated plants here: • Alnus incana • Salix elaeagnos • Salix purpurea • Rubus caesium • Chaerophyllum hirsutum

  17. Examples of pioneer societies 4.) Salicetum elaeagno purpureae • On higher sites of river foodplaines • 2,5 m above the middle water line • Not periodical flooded • Sandy soil with a fine humus layer

  18. Examples of following societies 5.) Softwood riverside forest • Growing on the middle course – on fine-grained alluvial plaines • Occasional floodedrich on nutrients a.) at the middle water line:Salicetum triandro – viminalis b.) above the middle water line:Salicetum albo-fragilis

  19. Examples of following societies 6.) Alnetum incanae • On chalky soil with good ventilation • Above the middle water line

  20. Examples of following societies 7.) Fraxino – Ulmetum • On deep, nutrient-poorloamy soils • Only flooded by extreme high water

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