Station # 1


1. Energy pyramids show that in an ecosystem the beginning of a food web has (more, fewer) organisms and (more, less) energy than the end.

2. According to the rule of ecological efficiency, if the eel grass has 1000 units of energy available, how much energy will be passed onto the gizzard shad? How much will be passed onto the raccoon?

3. Why do most food chains or pyramids have only three or four levels?

4. Name two autotrophs on this energy pyramid.

5. Name two first order consumers on this pyramid.

6. Name two second order consumers on this pyramid.

7. True or False: The energy pyramid concept helps explain the phenomenon of biological magnification - the tendency for toxic substances to increase in concentration at progressively higher levels of the food chain.

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Station # 4

1. True or False: A water quality buffer zone is undisturbed vegetation, including trees, shrubs and herbaceous vegetation bordering streams, ponds, wetlands, reservoirs or lakes, which exists to protect those waters
2. Why are buffer zones important? What advantages do they have?
A. Slows and filters runoff.
B. Stabilizes shoreline.
C. Provides habitat.
D. Enhances aesthetics.
E. Increases property value
F. Limits nuisance wildlife.
G. All of these are advantages.

3. Which of the following makes a good buffer?
A. Wider is Better — The wider the buffer the greater the benefit. But even a 10-foot
buffer is better than no buffer at all.
B. Natural Vegetation — A mix of native plant species (trees, grasses, and wildflowers)
adds to buffer quality and improves wildlife habitat. Deep-rooted native plants are best adapted to hold soils in place.
C. Weed Management — Like any urban landscape a buffer needs maintenance.
Periodic weeding will prevent invasive species such as purple loosestrife, buckthorn and reed canary grass from taking over a buffer, compromising
wildlife habitat.
D. Natural Water Flow — Water runoff
slows down and is filtered and infiltrated when
it naturally flows through a buffer, as opposed to being piped or ditched. Through this process a buffer improves the quality of water entering lakes and wetlands.
E. All of these contribute a making a better
water quality buffer.

4. In the picture to the right, which is the riparian zone?

rip.jpg