managing ecosystems

• What is ecological succession?

  The change of ecosystems from simple to complex
• Which species are the first to arrive and colonize a new environment during succession?

  Pioneer species
• How does the environment change as succession progresses?

  It becomes less hostile
• What happens to biodiversity as succession continues?

  It increases
• What is the final, stable stage of ecological succession called?

  Climax community
• What characterizes a climax community?

  It no longer experiences succession
• What is secondary succession?

  Succession on land that's already supported a community
• What is conservation?

  Active management of an ecosystem to maintain species
• What is sustainability?

  Making some resources available while protecting others
• What are motile organisms able to do?

  Move
• What are non-motile organisms NOT able to do?

  Move
• What sampling technique should be used to investigate the abundance of slow-moving organisms?

  Quadrats via systematic belt transect
• Which method is most suitable for sampling motile organisms?

  Mark-release and recapture techniques
• What is an assumption of the mark-release-recapture technique regarding markings?

  Markings don't reduce chances of survival
• What must be assumed about markings in the mark-release-recapture technique?

  Markings are not rubbed off
• In mark-release-recapture, what must be true about the time between release and recapture?

  Significant time for organisms to distribute
• What population factor must remain stable during mark-release-recapture sampling?

  Population size