Friday 8 June 2007

Geography [[Weather and Climate]] 4.2

[[4.2: The relationship between Climate and Seasonality]]

Ecosystems: natural units in which the life styles and cycles of plants and animals are linkedto each other and to the non-living constituents of the environment to form natural living systems.

Natural Vegetation (Climax Community): Vegetation which will develop which is dominiated by plants which, of all those avaliable can
compete most successfully in the exsisting physical environment.
Biomes: Large global ecosystems relted to major climate zones.

The world Biomes:

* Tundra *Temperate Grassland *Tropical Rainforest *Taiga *Evergreen woodland *Savanna *Temperate deciduous forest *Desert


Adaptions of vegetation to Climate


- In sufficient rainfall, trees dominate
- the higher the rainfall and temperature the taller the tees and the larger the leaves
- higher the rainfall and the temperature the higher the rate at which plants produce organic matter
- in low or seasonal rainfall, plants develop xerophytic features
*Reduced leaf areas
*Sunken Stomata
*Long root system
*Slow growth rate
*Fire resistant trunks and seds
*Root storage system
- In seasonal climates, plants loose their leaves.




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