BIO120H1 Lecture Notes - Lecture 13: George Mallory, Habitat, Soil
36
BIO120H1 Full Course Notes
Verified Note
36 documents
Document Summary
Lecture 13 - species ranges and limiting factors; climate. Study of model organism vs. broad comparative biology. Eeb focus on difference in a broad theme. E. g. different challenge of environment: distribution and abundance: why are organisms found where they are, ubiquity of patchiness, abiotic gradients and ranges of tolerance, coarse global patterns of temperature and precipitation: latitudinal patterns. Habitats & organisms patchy at all scales. Organisms are not spread evenly or randomly. Different part presents different conditions to organisms. Global patchiness: when you look at nasa earth satellite photo: E. g. a hill: it has different vegetation with regards to different elevation: Desert that has blooms in the wet season: Patchy distribution of lichens on facets of rock. Black on fresh surface and green on older surface. Resources : substances needed by the organism; exhaustible. Conditions physical properties important to the survival of the organisms; not. Conditions vary across space and time; we envision gradients of conditions.
