GEOG 4410 Study Guide - Midterm Guide: Purshia Tridentata, Gymnosperm, Cylindropuntia
Document Summary
Unrelated species evolve similar characteristics but are not related: example; dolphins, sharks, fish they look similar because of environment and have same beneficiaries, but they are biologically not related. Convergence is found in all ecosystems of the world: in the desert they are dominant and more noticeable because of colors. Lecture 9: morphological convergence: arid condition, 5 rodent genera and 1 marsupial, unspecialized rodent ancestors, independently evolved. Coloring (brown and white: differ in some characteristics. Community convergence evolution of community level? adaptations repeat in different deserts. Convergent evolution convergence in communities some partial examples no 2 places identical. Bergmann"s rule average size of individuals increases as latitude increases (in colder environment) conservation of heat. Allen"s rule mammals smaller extremities in higher latitudes arms, legs, tails, ears, bills, etc conservation of heat. Adaptations to aridity few species shared between namib and sahara only 8 plant species in both sahara and namib dominant taxa very different.
