Lecture 9 Flashcards
suburban landscape:
town and country areas with a heterogenous patchy micture of residential areas, commercial centers, cropland, managed vegetation and natural areas
is isolation high or low in natural or cultivated?
low in natural and high in cultivated
is connectivity high orlow in natural or cultivated?
high in natural and low in cultivated
describe and draw fragmentation
landscape divided into smaller remnant patches
describe and draw attrition
remnant patches and corridors destroyed
describe and draw perforation
disturbance patches created
describe and draw dissection:
Landscape divided with corridors
fill in what it is for natural and cultivated
managed landscapes:
primarily native species and managed and harvested
define and draw shrinkage
size of rmnant patches reduced
natural landscapes:
lack significant human impact
what are 5 specific transformations humans do in the land?
- dissection 2. perforation 3. Fragmentation 4. Shrinkahe 5. attrition,
cultivated landscape
Village and patches of nature or managed ecosystems scattered within the predominantly cultivated landscape
is fragmentation high or low in natural or cultivated?
low in natura and high in cultivated
fill in whether it is high, moderate or low for each one in natural or cultivated
What are 7 trends along the gradient from natural to urban landscapes
- Change from tight (self-sustaining) system to a syste mostly dependent on energy inputs (non-sustainable)
- High trophic specieslacking
- Organisms tend to be aggregated
- Extinctions tend to increase
- Landscapes tend to become geometric
- abrupt, linear ecotones and hard boundaries
- Altered rhyths or variation
what percent of native grassand remain in Saskatchewan?
17%, but the reduction continues…
urban landscapes:
primarily residential areas, may have a few patches
define ex-urbanization
is a process whereby people move from the city to rural areas but continue to maintain an urban way of life, either through long distance communication and technology.
