8.SCI.12.B

Describe how primary and secondary ecological succession affect populations and species diversity after ecosystems are disrupted by natural events or human activity.

Grade 8 · Texas Essential Knowledge and Skills (TEKS) · TEKS 2022

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Vocabulary
primary ecological successionsecondary ecological successionpopulationsspecies diversityecosystemsnatural eventshuman activity
Skills
  • describe (effects of primary ecological succession on populations and species diversity after ecosystem disruption) #dok2
  • describe (effects of secondary ecological succession on populations and species diversity after ecosystem disruption) #dok2
  • compare (primary and secondary ecological succession) #dok2
  • explain (how succession impacts populations and species diversity) #dok3
  • analyze (effects of natural events or human activities on ecosystem recovery through succession) #dok3
Learning Targets
  • I can identify primary and secondary ecological succession in disrupted ecosystems. #dok1
  • I can describe the effects of primary ecological succession on populations and species diversity after ecosystem disruption. #dok2
  • I can describe the effects of secondary ecological succession on populations and species diversity after ecosystem disruption. #dok2
  • I can compare how primary and secondary succession impact populations and species diversity. #dok2
  • I can explain how ecological succession influences population changes and species diversity after natural events or human activity. #dok3
  • I can analyze recovery of ecosystems through succession following disturbances. #dok3
Big Ideas
  • Ecosystems undergo changes after disturbances, and these changes affect the populations and species diversity through the processes of primary and secondary ecological succession.
  • The type of ecological succession (primary or secondary) influences the speed and nature of ecosystem recovery, as well as the diversity and stability of species within the ecosystem.
Essential Questions
  • What is the difference between primary and secondary ecological succession?
  • How do primary and secondary succession affect populations and species diversity in ecosystems after a disturbance?
  • What types of events can lead to ecological succession in an ecosystem?
  • Why does species diversity change during succession?
  • How do natural events and human activities influence the process and outcomes of ecological succession?