Spatial Patterns - Geography - Lecture Slides, Slides of Geology

In these Lecture Slides, the Lecturer has discussed the following key concepts of Geography :Spatial Patterns, Narrow Ecotones, Abrupt Environmental, Community, Species, Wide Ecotones, Similar Communities, Support Species, Ecotone Specialists, Species Richness

Typology: Slides

2012/2013

Uploaded on 07/22/2013

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Spatial Patterns
Narrow ecotones can occur with abrupt environmental
change (e.g. lake shore)
Species likely limited to one community
Wide ecotones often occur with gradual transitions
between more similar communities
May support species from both communities
May support ecotone specialists
Can have high species richness
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Spatial Patterns

  • Narrow ecotones can occur with abrupt environmental change (e.g. lake shore) - Species likely limited to one community
  • Wide ecotones – often occur with gradual transitions between more similar communities - May support species from both communities - May support ecotone specialists - Can have high species richness

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Environmental gradient

Ecotone specialists

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Which figures show examples of competitive exclusion of

species? Why?

Robert Whittaker 1975Docsity.com

Which figures show examples of coevolved species? Why?

Robert Whittaker 1975Docsity.com

So… what’s the typical pattern?

  • Species typically replace each other gradually along smooth

environmental gradients

but

  • When species with similar niches come into contact, sharp

boundaries can be observed due to competitive exclusion

  • Sharp boundaries can also result from abrupt changes in

environmental conditions (i.e. lake shore)

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Spatial distributions

of communities

Spatial distributions

of communities

Part II: Classifications

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Whittaker 1975Docsity.com