BIOL-104 Lecture Notes - Lecture 29: Forest Ecology, Evolutionary Ecology, Ecology
Document Summary
The way that humans perceive the world is our own filtering of what we see, not an accurate compilation of everything. Ex. tics only notice buyteric acid concentration, body temperature, and hair that"s all they need. We can only see between 400-700nm of light other animals can see a lot more. Snakes can see infa-red light: flowers use uv radiation to encourage pollinators to their nectar, polarized light can help organisms figure out where the sun is. Magnetoreception allows an organism to detect a magnetic field to perceive direction, altitude, or location. Observed in bacteria, invertebrates (fruit flies, lobsters, honeybees) and vertebrates: birds, turtles, sharks, and stingrays. Used for long-range orientation and migration but also for short-distance movements and regional mapping. Electroreceptoin biological ability to perceive natural electrical stimuli observed in aquiatic of amphibious animals since water is a better conductor than air. Echidnas, cockroaches, and bees can also perceive electrical stimuli. Electroreception is used in electrolocatoin and for electrocommunication.
