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Unformatted text preview: Exercise 5 Strawberry Creek: Biotic Interactions and Rapid Biological Assessments Pre-Exercise Assignment Jong Park (J.P.) 1. Insects, snails, worms, and crayfish are some examples of invertebrates that are important in forest ecosystems. Also emerging insects are important food source for terrestrial consumers. 2. Functional groups describe organisms that are analogous in consumption of types of food, meaning that they “all eat the same type of food, though they might not be closely related taxonomically.” (An Introduction to Stream Ecology: Organisms and Energy Flow) 3. In the headwaters of a stream most of carbon comes from allochthonous input, which consists of Coarse Particulate Organic Matter, such as leaves. The carbon source changes to sunlight toward the lower stream. Since the stream widens, more sunlight can reach the stream, whereas in the headwaters, the stream is covered by canopy of vegetation....
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This note was uploaded on 02/02/2011 for the course ES 10 taught by Professor Kondolf during the Fall '09 term at Berkeley.
- Fall '09