1 / 11

SUCCESSION

SUCCESSION. Review Terms. Abiotic: Non-Living factors in an environment Biotic: Living factors in an environment Autotroph: makes its own food Heterotroph: goes out and gets food Herbivore, Carnivore, Omnivore, Detritivore. Community.

rhett
Download Presentation

SUCCESSION

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. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. SUCCESSION

  2. Review Terms • Abiotic: Non-Living factors in an environment • Biotic: Living factors in an environment • Autotroph: makes its own food • Heterotroph: goes out and gets food • Herbivore, Carnivore, Omnivore, Detritivore

  3. Community • A group of interacting populations that occupy the same area at the same time • Are organisms in all communities the same? • NO! • What lives in a rural community? • What lives in an urban community? • What lives in a desert community? • What lives in an arctic community?

  4. Limiting Factors • Any ABIOTIC FACTOR that restricts the numbers, reproduction or distribution of organisms • Can include: sunlight, climate, temperature, water • BIOTIC LIMITING FACTORS include LIVING things, such as other plant and animal species • Factors that are LIMITING FACTORS for one species might help another thrive

  5. TOLERANCE • The ability of an organism to survive when subjected to biotic and abiotic factors • Includes upper and lower limits of any environmental factors • Example: water temperature for fish

  6. Ecological Succession • Ecosystems are constantly changing • Can be small ways (a tree falling) or Large ways (forest fire) • Some ecosystems depend on fires to clear debris to prevent worse damage • If fire is prevented debris might build up to the point that the next fire would burn all shrubs and trees • Habitats can be changed so drastically by fire that some species can no longer live there

  7. Ecological Succession • The change in an ecosystem that happens when one community is replaced by another as a result of changing biotic and abiotic factors • 2 types: Primary and Secondary

  8. Primary Succession • Establishment of a community in an area where there is no topsoil • Occurs very slowly • Includes pioneer organisms: such as moss, lichens • Helps to break down rocks to make soil

  9. Primary Succession • Then small plants such as ferns, grasses; organisms such as fungi and insects • Finally small trees and shrubs start to grow • Figure 3.3 in textbook • A mature community can develop from bare ground • Climax Community: a stable, mature community that results when there is little change in the types of species

  10. Succession • http://geopolicraticus.wordpress.com/2010/04/30/ecological-succession-in-cultural-geography/

  11. Secondary Succession • Change that happens after a community of organisms have been removed but the soil remains intact • Community changes over time just as in primary succession

More Related