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Lecture 9

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Department
Biology
Course
BIO120H1
Professor
James Thomson
Semester
Fall

Description
Lecture 9 thOct 17 Succession plants communities ability to change over time To someone he saw this as the development of the super organismPioneer species plants that have seed banks built up in first but then replaced by K selected species Affected by how the vegetation affects soil Shading soil building decay of plant into ground studied in old field habitat abandoned farms in north east Vegetation responds spontaneously Classification terminology Starts with pioneer weedy r strategist Goes through temporary non equilibrium seres orseral stages End at climax stage where trees die and make way for seedlings below itPrimary succession no existing plant community Limiting circumstances volcanoes clears out area Glaciers which sit on terrain Sand dunes Lava breaks down plants to contribute organic matterSecondary succession already was plant community soil has been built up but something has disturbed environment Discreet e
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