ENV100Y5 Chapter Notes - Chapter 3: Primary Production, Feedback, Ecosystem Ecology
69
ENV100Y5 Full Course Notes
Verified Note
69 documents
Document Summary
A system is a network of relationships among parts, elements or components that interact with and influence one another through the exchange of energy. Open systems systems that receive inputs of both matter and energy and produce outputs of both. Closed systems systems that receive inputs of energy but not matter and produce outputs of energy only. O(cid:373)eti(cid:373)es a syste(cid:373)"s output (cid:272)a(cid:374) ser(cid:448)e as its i(cid:374)put, for that sa(cid:373)e syste(cid:373). Feedback loops are of two types: negative and positive. In a negative feedback loop, i(cid:374)put a(cid:374)d output (cid:374)eutralize o(cid:374)e a(cid:374)other"s effe(cid:272)t. We sweat when hot and shiver when cold. Predator-prey system where population of one another rises and falls as a response to one another. Positive feedback loops rather than stabilizing a system like negative does, positive feedback drives the system further toward one extreme or another. Dynamic equilibrium when processes within a system move in opposite directions at equivalent rates so that their effects balance out.
