BIOB50H3 Lecture 18: Ecology Lecture 18.docx
Document Summary
Paradox of plankton: use the same set of resources. Species that belong in the lake, you wont expect to find in the meadow. Some species though can disperse in the community (move from aquatic to terrestrial) There is no one specific process that"s responsible for comm. membership, combination of factors. >dispersal/immigration (dispersing into a given community), abioitic factors, species interaction (competition, predation, mutualistic interactions) Dispersal/immigration: species supply is the first cut to comm. membership. if you load up a ship, you put in cargo and when your shipping the things across the world. You dump all the supplies there, they then fill the ships full of sea water and end up carrying along with them many species and they ships go back to where they came from. If regional richness is low, local richness is low. A ship from south america, the species from there are used to warmer climates and diff light.