Ecosystems

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Ecosystems

• Chapter 2
• Mr. Sierra

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What is an Ecosystem?
Chapter 2 - Section 1

• All the different organisms living in a certain
  area, along with their physical environment.
• This includes
• Biotic Abiotic Factors

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Biotic
Chapter 2 - Section 1
Living Things
Abiotic
Non-Living Things
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Biosphere
Chapter 2 - Section 1

• Link to Prezi Click Here
• http//prezi.com/xqmuenp1d5ex/ecosystems/
• Individual Organism
• Population
• Community
• Ecosystem
• Biosphere

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Niche vs. Habitat
Chapter 2 - Section 1

• Niche an organisms way of life
• Habitat the actual place where an organism lives
• Biomes regions that have distinctive climates
  and organisms may contain many separate but
  similar ecosystems.

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Species Interactions
Chapter 2 - Section 2
Interaction Definition Examples
Competition Two or more organisms of the same or different species attempt to use the same limited resource. Oak trees and maple trees competing for light. Fish and Frogs eating bugs in the water.
Predation/ Parasitism Organisms that live in or on another organism and feed on it without immediately killing it. (One species benefits, one is harmed.) Predation wolf and rabbitParasitism flea and wolf
Mutualism A cooperative partnership between two species in which both species benefit. - (also called symbiotic relationships) Insect pollination of flowers
Commensalism A relationship in which one species benefits and the other is neither harmed nor helped. Birds on the back of a rhinoceros.
Amensalism/ Allelopathy One species harms another (typically by releasing a chemical or toxic substance), but is not affected itself. affects the development and growth of neighboring plants. Eucalyptus Black Walnuts
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Survival of the Fittest
Chapter 2 - Section 3
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Natural Selection
Chapter 2 - Section 3

• The unequal survival and reproduction that
  results from the presence or absence of
  particular traits.

(Starburst Activity)
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Evolution
Chapter 2 - Section 3

• A change in the genetic characteristics of
  populations from one generation to the next.

CoEvolution

• When 2 or more species evolve in response to each
  other.

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Adaptation
Chapter 2 - Section 3

• An inherited trait that increases an organisms
  chance of survival and reproduction in a certain
  environment.

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Extinction
Chapter 2 - Section 3

• When the last individual of a species dies.
• Threatened ? Endangered ? Extinct!

Project Make a PowerPoint based on an Endangered
Species of animal, insect or plant. Requirements
Location include population/habitat maps and
migration routes Quantity how many are left - in
the wild vs. in captivity Causes why are they
threatened or endangered? Solution how are they
being protected / reproduced today?   See
assignments page of website for more
information.