01:119:116 Lecture Notes - Lecture 25: African Buffalo, Diversity Index, Decomposer

• School: Rutgers University
• Department: Biological Science
• Course: 01:119:116
• Professor: Daniel Stern Cardinale

Document Summary

Community= association of populations of not equal species that live and interact in same place at same time: ex. crab carries a sea urchin (or jellies) on its back protection against predators, figure 54. 1. Study of interactions that determine distribution and abundance of individuals and populations in communities. Find patterns and processes common to wide variety of communities. Can be difficult b/c of many interactions between individuals and populations. Resource anything from environment that meets needs of a particular species: limiting resource = in scare supply, community interactions. Classified by whether they: help= positive (+, harm= negative (-, have no effect (0) 3 main types: competition, predation (includes herbivory, symbiosis (parasitism, mutualism, and commensalism, competition. Competition = for same resource in short supply -/- interaction use by one decreases amount available to others. Intraspecific competition between individual of same species. What are these used resources: ecological niche, ecological niche.