Ecological Succession | Primary & Secondary

Ecological succession is how the makeup of a community changes over time, starting right after a disturbance. We can tend to think of succession as taking a really long time, and some types DO take a really long time, but sometimes it may only take a season or two. The most important thing to learn is that succession is all about CHANGE!

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IN THIS EPISODE:
-Succession Overview
-What makes up an Ecosystem
-Primary Succession
-Pioneer Species: Lichen
-Secondary Succession

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SCIENCE STANDARDS:
NGSS
MS-LS2-4
Construct an argument supported by empirical evidence that changes to physical or biological components of an ecosystem affect populations. Emphasis is on recognizing patterns in data and making warranted inferences about changes in populations, and on evaluating empirical evidence supporting arguments about changes to ecosystems.
HS-LS2-6
Evaluate claims, evidence, and reasoning that the complex interactions in ecosystems maintain relatively consistent numbers and types of organisms in stable conditions, but changing conditions may result in a new ecosystem. Examples of changes in ecosystem conditions could include modest biological or physical changes, such as moderate hunting or a seasonal flood; and, extreme changes, such as volcanic eruption or sea level rise.

TEKS
SCI.7.10.C
Organisms and environments. The student knows that there is a relationship between organisms and the environment. The student is expected to: observe, record, and describe the role of ecological succession such as in a microhabitat of a garden with weeds.

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