Warm Up #11 What happens during ecological succession?

Ch. 5 Biomes and Ecosystems Lesson 3: How Ecosystems Change

Essential Questions How do land ecosystems change over time? How do aquatic ecosystems change over time?

How Do Communities Change? ACTIVITY An ecosystem can change over time. Change usually happens so gradually that you might not notice differences from day to day. Look at community A and community B. What do you think community A might look like midway in its change to becoming like community B.

Warm Up #12 What’s the difference between primary and secondary succession?

How Land Ecosystems Change Ecological succession – the process of 1 ecological community gradually changing into another Occurs in a predicted series of steps Ex. Small plants grow before big plants Climate community – a stable community that no longer goes through major ecological changes

How Land Ecosystems Change Primary succession – ecological succession in new areas of land with little or no soil Pioneer species – the 1st species that colonize new or undisturbed land https://www.youtube.com/watch?v=TLpc71YOtcE Secondary succession – areas where ecosystems have been disturbed or destroyed

Primary Succession

Secondary Succession

How Freshwater Ecosystems Change Aquatic succession – freshwater ecosystems change over time in a natural predictable process Eutrophication – the process of a body of water becoming nutrient-rich