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Populations and Communities


Small snail
Students will get an introduction to intertidal ecology. They will examine the biotic factors that structure communities and determine where organisms are found. Students will examine different types of competition, see demonstrations of predation, gain an understanding of keystone species, and discuss examples of mutualism, commensalism and parasitism.

Curriculum connections:
Alberta Biology Grade 11 (Biology 20) Unit B: 20-B1.1k, 20-B1.2k 20-B1.3k, 20-B1.4k, 20-B1.3s;
Alberta Biology Grade 12 (Biology 30) Unit D: 30-D2.1k, 30-D2.2k, 30-D2.2s, 30-D2.3s.

Resources:

Media:

Introduction to the intertidal zone

The intertidal zone is a very dynamic area. See if you can identify some of the common species found here.

Quantitative Study Demonstration

The intertidal zone is a very dynamic area. See if you can identify some of the common species found here.

Intertidal Quadrats

Some common intertidal species are described here. Also, This video has quadrats layed out on the ground. Time to count!

In this video, a diver shows a leather star. At about one minute into the video, keep your eye out for a commensal worm — an example of commensalism.

 

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BMSC LIVE by Bamfield Marine Sciences Centre Public Education Program is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License.
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