Homework Check + Exit Ticket Tracker ▪Sit your homework on your desk to be checked. ▪Exit Ticket Objective: Biodiversity

Human Organ Systems Review ▪Match the functions listed with the system or systems that perform the task.

Objective ▪SWBAT define and sequence the stages of primary succession.

IB Learner Profile ▪Reflective

Agenda ▪Mount St. Helens Comparison ▪Lichens and Mosses Reading ▪Notes-Primary Succession ▪Card Sort ▪Comic Strip ▪We’re Going Where? ▪Exit Ticket

Mt. St. Helen’s Eruption ▪

Mount St. Helens

The picture to the right shows a before and after picture of an ecological community. Draw in what you think the community would look like as it transitions from the picture on the left to the picture on the right.

Lichens and Mosses Reading

What are Lichens? ▪Lichens are typically the first organisms to colonize bare rock. Many organisms require soil before they can colonize an area. Lichens that colonize bare rock secrete acids that break down the rock and start the soil-production process. Also, as lichens die, they provide some organic matter that also contributes to soil. Mosses can then colonize the thin soil; as mosses die, the soil thickens more allowing other hardy species to colonize. The process continues until a mature forest forms, sometimes centuries later.

Ecological Succession ▪Ecological Succession is the process of one ecological community gradually changing into another. ▪Primary succession is a type of ecological succession that occurs in new areas of land with little or no soil.

Stop and Jot ▪What happens during ecological succession?

Pioneer Species ▪The first species to colonize new or undisturbed land are called pioneer species. ▪In primary succession lichen and mosses are pioneer species that help break down rock to create and add nutrients to soil.

Stop and Jot ▪What is the role of lichens and mosses in primary succession?

▪Once enough soil is created to support the growth of larger plants, ferns and grasses begin to grow. ▪Larger animals begin to move into the area, creating richer and deeper soil that can support the growth of shrubs and small trees.

Climax Community ▪In time, trees begin to take root and the community becomes a climax community that no longer goes through major ecological changes.

Stop and Jot ▪What is a climax community?

Labeling Ecological Succession

Guided Practice ▪Who: You and your table group ▪How: Quietly, in your seats ▪What: Complete each card sort by placing the pictures and words in the correct order that they occur in primary succession.

Independent Practice ▪Who: You ▪How: Silently, Independently ▪What: Use the panels below to create a comic strip showing the steps of primary succession. Use the instructions on your handout to help create your comic strip.

We’re Going Where ▪Make a prediction about what tomorrow’s lesson will be about based on what you learned in class today.

Exit Ticket ▪Complete the Exit Ticket on the slip of paper at your desk. ▪Homework Reminder: Vocab Models- ecological succession, primary succession, pioneer species, climax community

Primary vs. Secondary Succession ▪