BIO-8 Lecture Notes - Lecture 26: Commensalism, Body Armor, Lyme Disease
Document Summary
Commun ecology focused on interactions of species in particular place and consequences of these interactions for species abundance and density. Duration of any given interaction can vary greatly. Any particular interaction may shift category in the lifetime of individuals and over evolutionary time. Outcome of community interactions and evolution of characteristics of interacting species are in a feedback loop. Community interactions are not static over time. Traits of species are evolving in direct response to commun context- commun interactions can exert strong selection. Biotic factors= commun interactions, favor diverse adaptations for escaping interactions with other species. All orgs that don"t photosynthesize must eat other orgs, all orgs are at risk of being eaten. Predatory-prey and herbivore-plant immediate consumption from outside in. Coev= reciprocal ev in 2+ interxting species with adaptations selected by their. Continuous escalation of resource and consumer adaptations to each other evo intxn arms race often result in evo stable state.
