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How Ecosystems Change

Published on Nov 19, 2015

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PRESENTATION OUTLINE

1.

QUESTION ABOUT LAST CLASS

  • What were the three cycles discussed in our last class?
  • A. Carbon, aluminum, phosphorus
  • B. carbon, nitrogen, phosphorus
  • C. Nitrogen, phosphorus, helium
  • D. Phosphorus, calcium, nickel
2.

HOW ECOSYSTEMS CHANGE

Ecosystems are constantly changing
Photo by seanmcgrath
3.

ECOLOGICAL SUCCESSION

Gradual process of change & replacement of types of species
Photo by harinaivoteza
4.

PRIMARY SUCCESSION

Occurs where no ecosystem existed before
Photo by skoeber
5.

SECONDARY SUCCESSION

Occurs where ecosystem previously existed
Photo by gnuckx
6.

PIONEER SPECIES

First organisms to colonize newly available area
Photo by renatotarga
7.

CLIMAX COMMUNITY

Final and stable community
Photo by Frank Wuestefeld

Todd LaVogue

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