chapter 6 l.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Chapter 6 PowerPoint Presentation
Download Presentation
Chapter 6

Loading in 2 Seconds...

play fullscreen
1 / 10

Chapter 6 - PowerPoint PPT Presentation


  • 358 Views
  • Uploaded on

Chapter 6 Ecosystems and Ecosystem Management Basic Characteristics of Ecosystems Sustained life on Earth is a characteristic of ecosystems, not of individual organisms or populations Structure: Living (Ecological Communities) Non-living Processes Cycling of chemical elements

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Chapter 6' - Albert_Lan


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
chapter 6

Chapter 6

Ecosystems and Ecosystem Management

Botkin and Keller Environmental Science 5e

basic characteristics of ecosystems
Basic Characteristics of Ecosystems
  • Sustained life on Earth is a characteristic of ecosystems, not of individual organisms or populations
  • Structure:
    • Living (Ecological Communities)
    • Non-living
  • Processes
    • Cycling of chemical elements
    • Flow of energy
  • Change (Succession)

Botkin and Keller Environmental Science 5e

ecological communities and food chains
Ecological Communities and Food Chains
  • Ecological Communities are defined in 2 ways:
    • 1. A set of interacting species that occur in the same place
      • Food chains, food webs, trophic levels (autotrophs)
    • A set of species found in one area

Botkin and Keller Environmental Science 5e

food chains and food webs
Food Chains and Food Webs
  • A Terrestrial Food Chain
    • 4 trophic levels:
      • Autotrophs
      • Herbivores
      • Carnivores
      • Decomposers
    • People are omnivores
  • An Oceanic Food Chain
  • The Food Web of the Harp Seal

Botkin and Keller Environmental Science 5e

the community effect
The Community Effect
  • Species interact directly and indirectly
  • Community-level interactions
  • Keystone species
    • Have large effects on it’s community or ecosystem
    • Its removal changes the basic nature of the community
  • Holistic View

Botkin and Keller Environmental Science 5e