BISC 102 Lecture Notes - Lecture 4: Interspecific Competition, Coevolution, Commensalism

• School: Simon Fraser University
• Department: Biological Sciences
• Course: BISC 102
• Professor: Ivona Mladenovic

Document Summary

A community exists of all the interacting populations within an ecosystem. individuals that live in the same area and belong to the same species are a community. The interaction between the organisms in a community is a fundamental factor influencing community structure. How? evolves genetic features so whatever the species is it can sustain. Coevolution is a process by which 2 interacting species act as agents of natural selection on one another over evolutionary time. Types of interactions among populations interspecific interactions- competition(-/-) predation (+/-) symbiosis (+/-) disease (+/-) Competition and predation connects to herbivory (+/-). Symbiosis and disease connects to parasitism (+/-) commensalism (+/0) mutualism (+/ Interspecific: 2 different species competing for same resources. How similar the requirement of the two species are. Every species has a unique ecological niche (its profession) It is a range of resources that the species can use or the range of conditions it can tolerate.