BIOL 3170 Study Guide - Final Guide: Allelopathy, Macroecology, Reaction Norm
Document Summary
The tent caterpillar: tent caterpillars are native to north america, outbreaks can cover thousands of square kilometers, there are so many you can hear them chewing , can ruin the forage, the caterpillars build a tent to protect themselves from predators, caterpillars also have sharp spines on their body to deter predators. Natural ( control ) populations: this is from british columbia, populations peaked in 1986 & collapsed in 88, eggs/mass increased up until 1986, then got lower as density decreased, appears to be positive density dependence, this is log scale (so everything is actually a lot more dramatic), time over. Even though population is getting smaller, density is lower, females are less fecund, the survivorship of: positive density dependence the young is decreasing, everything is declining, similar pattern in second graph. Did the two by doing mark recapture: and if could figure out annual mortality = what"s left is throated blue the summer = migration to year.
