Lecture XXI - Landscape Ecology

Lecture XXI - Landscape Ecology - Lecture XXI Landscape...

Info iconThis preview shows pages 1–10. Sign up to view the full content.

View Full Document Right Arrow Icon
Lecture XXI – Landscape Ecology
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Landscape A Landscape is mosaic of habitat patches Each patch is embedded in a matrix of surrounding patches that differ in some significant way Patches are more homogeneous compared to their neighbors http://cavern.com/wp-content/uploads/2007/04/karst-landscape-large.jpg
Background image of page 2
Habitat Patches Over a large area, many types of natural community may occur Some merge with one another, while others are separated by clear boundaries The these patches make a higher level of organization – a landscape. Human activity has been central in creating landscapes dominated by habitats with distinct edges
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Inherent Edges Set by natural geographic features More or less permanent, as long as the geographic feature is permanent
Background image of page 4
Induced Edges Created by disturbance (fire, flood, etc.) Usually temporary http://crawford.tardigrade.net/journal/album/liarslwr.jpg http://www.pajarowatershed.com/Album_SanBenito1/aCurry057.jpg
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Edges Edge effect – the effect of dwelling at the habitat edge versus the interior Birds: often increased nest predation, brood parasitism Mammals: species dependent, no general trend http://polyland.calpoly.edu/places/PolCan/abovetrac/images/solotree1.jpg http://www.ia.nrcs.usda.gov/news/images/Pics/24%20Corridors.jpg
Background image of page 6
Borders Formed where patches meet Wide borders become habitats of their own and are referred to as Ecotones, transition zones between adjacent patches
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Borders Straight or Convoluted Sealed or Perforated Refer to the ease with which organisms move from patch to patch Depends not only on the physical characteristics of the patch but the characteristics of the species being considered. A sealed border for some species may be perforated for others.
Background image of page 8
Edge Effect Forest edges and
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 10
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 01/23/2010 for the course BIOS 230 taught by Professor Gibbons during the Fall '08 term at Ill. Chicago.

Page1 / 22

Lecture XXI - Landscape Ecology - Lecture XXI Landscape...

This preview shows document pages 1 - 10. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online