ENV100Y5 Lecture Notes - Lecture 18: Red Queen Hypothesis, Evolutionary Arms Race, Ecological Niche
yifanyang and 39662 others unlocked
69
ENV100Y5 Full Course Notes
Verified Note
69 documents
Document Summary
Interactions with environment: habitat: the environment in which an organism lives and functions, living and nonliving components, scale depends on organism. Ecological niche: an organisms use of resources and its functional role in a community, fundamental niche: optimal conditions, realized niche: a subset of fundamental niche due to species interactions. Habitat specialists & generalists: specialists: narrow niches and very specific requirements, generalists: broad niches that can use a wide array of habitats and resources. Competition: multiple organisms seek the same limited resources. Intraspecific competition (within species); interspecific competition (between two different species: result: exclusion or coexistence, resource partitioning, species divide shared resources by specializing in different ways, avoid competition, character displacement: characteristics diverge to lessen competition. Mutualists help one another two or more species benefit from their interactions symbiosis: mutualists live in close physical contact pollination a type of mutualism. Coevolution antagonistic species become locked in a duel of escalating adaptations.