Old Labs
If 2 species are competing, the energy diagram arrows should both be ____ (- or +)?
- / -
Give an example of a keystone species (that isn't an otter).
-Wolf
-Beaver
-Elephants, etc. etc.
How did sea otters help the ecosystem?
-Otters each sea urchins
-Without otters eating sea urchins, the sea urchins go hog wild and eat all the kelp
anything reasonable
Give an example of a non-insect invertebrate
-Jellyfish, squid, crab, tapeworm, etc.
In the diagram we discussed, which piece of the arch is a keystone species and why?
Center piece, remove one and the others fall
Name an invasive species and a negative effect it has!
-Any reasonable answer
What is a benefit of direct development?
Less energy, less vulnerable to predators
What's one thing that's relevant to the effect that a species has on an ecosystem (e.g. behavior)?
•Trophic level: Where it is in the food web
•Abundance: Common/Rare?
•Uniqueness: Do other species share a similar role?
•Behavior: Preferences
Who's the old guy I keep talking about who wrote "A Sand County Almanac"?
Aldo Leopold!