Animal and Environment Interdependence: Ecosystem Survey
Student perform an ecosystem survey of a local wildlife refuge before a major change is implemented to the ecosystem. The reservoir in the ecosystem will change from 30 acres to 10 acres effectively becoming 1⁄3 the size. See the letter from Portland Parks and Recreation to understand more about the situation. This will happen as a result of replacing a smaller culvert with a much larger one. The local Audubon society voiced concerns on the impact on waterfowl. The intention of the change is to increase biodiversity of the refuge by increasing the size of a culvert that connects this ecosystem to the larger river ecosystem it was separated from 50 years prior by a railway. This culvert is large enough for salmon to stop off for reading on their annual run, deer and larger mammals to swim through etc.This project has been 10 years in the making. The data generated by the first student group will provide a based line of where the ecosystem is at before the project. A later student group will come back and look at where the ecosystem is at after the change.