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An example: Grassland Habitats

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Presentation on theme: "An example: Grassland Habitats"— Presentation transcript:

1 An example: Grassland Habitats

2 Grassland Habitats 53 habitats

3 Grassland Habitats 53 habitats
Dominated by grasses, other herbs & sometimes with bryophytes and lichens

4 Grassland Habitats 53 habitats
Dominated by grasses, other herbs & sometimes with bryophytes and lichens Derived mostly from by forest-clearance and maintained by grazing, mowing, burning

5 Grassland Habitats 53 habitats
Dominated by grasses, other herbs & sometimes with bryophytes and lichens Derived mostly from by forest-clearance and maintained by grazing, mowing, burning Vary according to regional climate, soil reaction, nutrient status & water content

6 Grassland Habitats

7 Grassland Habitats

8 Grassland Habitats

9 Grassland Habitats

10 Grassland Habitats

11 Grassland Habitats

12 Grassland Habitats

13 Grassland Habitats

14 Grassland Habitats

15 Grassland Habitats 53 habitats
Dominated by grasses, other herbs & sometimes with bryophytes and lichens Derived mostly from forest and maintained by grazing, mowing, burning Also includes heavy metal grasslands, tall herb vegetation, forest fringes & parklands

16 Grassland Habitats

17 Grassland Habitats Major threats (particularly for pastures and meadows):

18 Grassland Habitats Major threats (particularly for pastures and meadows): Agricultural ‘improvement’ aimed at higher productivity: fertilisers, intensive stock management & forage harvesting

19 Grassland Habitats Major threats (particularly for pastures and meadows): Agricultural ‘improvement’ aimed at higher productivity: fertilisers, intensive stock management & forage harvesting Abandonment of traditional pastoral agriculture with reversion to scrub & forest

20 Grassland Habitats Other threats:

21 Grassland Habitats Other threats:
Particularly for wet grasslands - modifications of hydrographic functions, by catchment management, flood control, water abstraction

22 Grassland Habitats Other threats:
Particularly for wet grasslands - modifications of hydrographic functions, by catchment management, flood control, water abstraction Particularly for high mountain grasslands - climate change, particularly milder winters, reduced snow-lie, longer growing season

23 Grassland Habitats Half of European grasslands are threatened to some degree, one of the highest percentage of all seven major terrestrial/freshwater habitat groups

24 Grassland Habitats Half of European grasslands are threatened to some degree

25 Grassland Habitats 4 Critically threatened grassland habitats
E1.1a Pannonian and Pontic sandy steppe E1.5e Madeiran oromediterranean siliceous grasslands E1.9b Inland sanddrift and dune with siliceous grassland E7.2 Hemiboreal and Boreal wooded pasture and meadow have either a very small natural extent or a dramatic recent or historic decline

26 Grassland Habitats 8 Endangered grassland habitats
E1.5c Cyrno-Sardean oromediterranean siliceous dry grassland E1.9a Oceanic to sub-continental inland sand grassland on dry acid and neutral soils E1.B Heavy-metal grassland E1.F Azorean open dry, acid to neutral grassland E3.4a Moist or wet mesotrophic to eutrophic hay meadow E3.4b Moist or wet mesotrophic to eutrophic pasture E3.5 Non-Mediterranean moist or wet oligotrophic grassland E6.3 Temperate inland salt marsh have either a very large recent or historic decline

27 Grassland Habitats 13 Vulnerable grasslands have suffered a recent large decline in extent 5 Near Threatened grasslands have suffered a large decline in extent or substantial reduction in quality 17 grasslands are Least concern and 2 grasslands are Data Deficient

28 Grassland Habitats E1.9 Inland sand grasslands and E2 Mesic pastures and meadows are notably faced with threats at various levels under different criteria

29 Grassland Habitats Many grasslands are differently distributed within similar overall ranges

30 Grassland Habitats Many grasslands are differently distributed within similar overall ranges Many grasslands are differently threatened in different parts of their range

31 Grassland Habitats Many grasslands are differently distributed within similar overall ranges Many grasslands are differently threatened in different parts of their range Many grasslands have sub-types which are differently threatened

32 Grassland Habitats Many grasslands are differently distributed within similar overall ranges Many grasslands are differently threatened in different parts of their range Many grasslands have sub-types which are differently threatened Some grasslands contain species more highly threatened that the habitat itself

33 Grassland Habitats There is no assessment of habitat dispersal or mean stand size

34 Grassland Habitats There is no assessment of habitat dispersal or mean stand size Assessment of habitat quality is especially problematic (quantitative thresholds)

35 Grassland Habitats There is no assessment of habitat dispersal or mean stand size Assessment of habitat quality is especially problematic (quantitative thresholds) There is no assessment of the cultural values of habitats

36 Grassland Habitats There is no assessment of dispersal or mean stand size Assessment of quality is especially problematic There is no assessment of the cultural values of habitats Habitats with similar degree of threatenedness vary in their recoverability


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