BIOLOGY 3DD3 Study Guide - Ecological Niche, Tide Pool, Null Hypothesis

• School: McMaster University
• Department: Biology
• Course: BIOLOGY 3DD3
• Professor: Jurek Kolasa

Document Summary

Ecological system (community or ecosystem) are made up of fragments of local populations of species, where the same taxonomic species may exist elsewhere. Thus, we can"t just define community based on the number of species unless we look at large scale: scale" changes things. Membership of a species in a community ranges from almost permanent to almost accidental. Habitat is hard to define because it changes depending on the perception of the individual spices (organism), and it usually forms a multi-dimensional hierarchy. Local community has species in which the habitat is important, optional or occasional. Species can be permanent or transient (visitor) The ecological representation of a species (in terms of numbers) change (i. e. an ant in a local community vs. deer- there would be more ants for sure) Species from a community" might show various integration from its sister communities (or its own broader population)