ecosystems n.
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ECOSYSTEMS . ECOLOGY Study of the interactions of living organisms with one another & their physical environment HABITAT Place where a population of species lives. COMMUNITY Many different species that live in the same habitat ECOSYSTEM

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Presentation Transcript
slide2
ECOLOGY
  • Study of the interactions of living organisms with one another & their physical environment

HABITAT

  • Place where a population of species lives
slide3

COMMUNITY

  • Many different species that live in the same habitat

ECOSYSTEM

  • Consists of a community and all of the physical parts of the habitat
succession
SUCCESSION
  • Natural, orderly process in the community of an ecosystem
  • characterized by population growth and reduction
2 types of succession
2 TYPES OF SUCCESSION

Primary Succession

  • Succession that occurs where plants have not grown before
  • Ex: receding glaciers

Secondary Succession

  • Occurs in areas where there has been previous growth
  • Ex: forest fire, flood, drought, deforestation
pictures of secondary succession
Pictures of Secondary Succession
  • Tropical storm Mount Etna,

Andrea Italy

more secondary succession
More secondary succession
  • Deforestation in * Japan tsunami

Amazon Rainforest

climax community
CLIMAX COMMUNITY
  • When succession slows down
  • A stable mature community that undergoes little to no succession
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Pioneer species

the first organism to appear in an area undergoing succession

  • Ex: bacteria,

moss,lichens

slide14

Autotroph/producer- organism that makes its own food (plants)

  • Heterotroph/consumer- organism that eats other things (animals)
food chains
Food Chains
  • Possible route for the transfer of matter & energy through an ecosystem from autotrophs to heterotrophs to decomposers
  • Herbivores- eat plants
slide16

Omnivores- eat plants & animals

  • Carnivore- eats animals
  • Decomposer- eats decaying material
  • Scavenger- eats dead organisms, leftovers
food webs
FOOD WEBS
  • Shows all the possible feeding relationships in a community, interconnected food chains
slide19
Autotrophs/producers have the highest biomass, energy, and populations
  • Top carnivores have the least biomass, energy, and populations
slide20
Biomass
  • The total dry organic matter or stored energy content of living organisms that is present at a specific time