Science

What is ecology in relation to urbanization?
-> urbanization impacts on flow ecology.

The worlds population is anticipated to append from 6.1 billion to 8.1 billion over the next 25
years, with urban expanding upon expected to accommodate nearly all of this population increase. By
2030, inhabitants of urban areas are expected to account for approximately 60% of the world
population. This variant of population increase is expected in Australia, as it is in other parts of
the world.
The benefits we derive from our cities conduct come at considerable environmental cost. Rivers and
streams around the world have been deeply changed by human activity and urbanization,
streams in urban areas have received relatively little scientific attention when compared with
systems in natural (minimally disturbed) or rural areas.
It was within this context that the Symposium on Urbanization and Stream Ecology was
convened:
to bring together and combine current knowledge of the effects of urban land delectation on stream
ecosystems,
to examine priorities and potential for stream rehabilitation in urban catchments, and
to identify knowledge gaps to direct future bionomical research in urban catchments.
Urbanization results in tetrad broad interrelated miscellaneas of disturbance or degradation that canful affect
stream ecology :
1.



disturbance of hydrological and hydraulic patterns,
2. disturbance to stream geomorphology,
3. degradation of water quality, and
4. habitat degradation or simplification.











The form of rehabilitation adopted in urban areas will be governed by the values assigned to
streams by stakeholders. However, features associated with the urban syndrome do not always have negative connotations. The general national whitethorn place high
value on factors such as good access, amenity, and an aesthetically pleasing landscape, even
though such features may be of little benefit, or may impair native-born species and ecological
function.
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