Transcript Primary succession

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
▪ https://www.youtube.com/watch?v=-H_HZVY1tT4
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
▪ https://www.youtube.com/watch?v=O8-LZdIyUQg