There are also some special post codes: the airport has its own post code (1300), the UN (1400) and some big companies also have their own post code, for example the ORF, the Austrian National Broadcasting Service (1136).
Two different types of succession, primary and secondary, have been distinguished. Primary succession occurs in essentially lifeless areasâregions in which the soil is incapable of sustaining life as a result of such factors as lava flows, newly formed sand dunes, or rocks left from a retreating glacier. Secondary succession occurs in areas where a community that previously existed has...
This non-native species causes extensive ecological damage to native habitats. Secondary succession is the series of community changes which take place on a previously colonized, but disturbed or damaged habitat.Examples include areas which have been cleared of existing vegetation (such as after tree-felling in a woodland) and destructive events such as fires.Secondary succession is usually much quicker than primary succession for the following reasons: There is already an existing seed bank of suitable plants in the soil.his non-native species causes extensive ecological damage to native habitats. Secondary succession is the series of community changes which take place on a previously colonized, but disturbed or damaged habitat.