1. Chapter 5 Biodiversity Species Interactions, and Population Control SEA OTTERS Thick fur Each day a sea otter consumes about ¼ of it’s weight in clams, shellfish, abalone, crabs, etc. Hunted almost to extinction by the early 1900’s Became an Endangered Species Discovered they play a major role as a keystone species in the kelp forests of the pacific.

2. Competition Intraspecific: Competition between members of the same species Interspecific: Competition between members of different Species

3. Species Interactions (+) = benefit (-) = harm (0) = no affect Mutualism +/+ Competition -/- Commensalism +/0 Parasitism +/- Amensalism -/0 Predation +/-