BIOL 302 Lecture Notes - Lecture 23: Vascular Plant, Vemal, Approximation
Document Summary
From geographical to ecological limits: all species distribution limits. All species have geographic range/ ecological range: arid habitats/ anoxic environments = limited human populations. Where can we find anoxic species: high altitude, does not require a host, some species like birds that fly in high altitudes, some human populations make mountain ranges their home. May have barreled chests: like an asthmatic person. Example: symphotrichum (asters) in north america: there is a wide geographical range. Everybody adapted to environments become separate species. Allowed for morphological differences because of adaptations to unique subset of environments. Many possible definitions: class came up with some of the following: A boundary in which a species can establish and reproduce successfully to pass on its alleles. Ecological (abiotic and biotic) adaptations in a confined area. Geographical area in which individuals cannot survive and reproduce. Dr. samis"s definition: spatial extent of a specie distribution. Canada: plant conservation: conservation of geographically peripheral population.
