BIOL 1001 Lecture Notes - Lecture 22: Biogeography, Abiotic Component, Population Ecology
Document Summary
Bio 1001 population ecology march 15, 2017. Founder effect and drift has played a role in evolution. Natural selection has also played a role: skin colour (amount of melanin) and location, resistance to infections, body shape & size. Shorter = less sunlight getting to you / less radiation. Skinny = less surface area: surface area is where we release heat from, volume is where we take heat in, therefore we want more surface area to volume to dissipate the heat (tall and skinny, ex. Inuits have muscle but they are stocky because it is advantageous in their habitat. They need to release less heat than those in warmer climates. Dna phylogenies of other species to reconstruct early human history and culture: Lice started to show up when human"s started wear clothes. Think of ecology as the interaction between organisms and their environment: population ecology is groups of individual organisms that interbreed with each other.
