Demonstrating Primary and Secondary Succesion
Transcription
Demonstrating Primary and Secondary Succesion
Hemingway Name: Demonstrating Primary and Secondary Succesion How are the stages of succession similar? How are they different? Part 1 Using pg 118, choose either a pond or an ocean sand dune to illustrate succession. You will create a 7 panel storyboard to show the primary succession Include a time frame Part 2 Modelling Secondary succession Imagine that a flood, fire or tsunami completely wiped out a mature community. Illustrate the series of events that occur at: o 10 years o 100 years o 300 years Part 3: Write a paragraph to describe how your ecosystem progressed through the stages of seondary succession after the natural disaster. In your answer include changes of plant/animal communities, pioneer species, biodiversity and mature community. Hemingway Name: Pond Succession Sand Dune Succession Micro organisms carried by wind and insects are deposited in the water. Micro organisms die and form a layer of muck on the pond bottom Water plant fragments transported by birds and wind take root in the muck The increase in decaying organism create more organic matter on the pond bottom in which cattails and lilies take root Water lilies and cattails die off creating more organic matter Water becomes shallower, grasses and small shrubs move in Fish and other animals carried by streams, birds or other animals move in Nutrients obtained from decaying seaweed Decaying vegetation create soil Soil can hold water so lichens and mosses can grow Grasses that can tolerate salt spray from the ocean can grow Grasses help anchor the soil Shrubs can grow because of a increased amount of soil A forest of white spruce eventually grows Hemingway Name: Hemingway Name: