ENV234H1 Lecture Notes - Lecture 2: Permafrost, Hudson Bay Lowlands, Protozoa
29 Jan 2013
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Document Summary
Vegetation zonation in canada show both longtitudinal and latitudinal effects. Doesn"t reflect the distribution limits of particular species. As you travel around the world there are two things that vary: different plants and animals, way the plants look in different parts of the world. Biota plants and animals + microorganisms (fungi, bacteria, single celled protozoa etc) Populations are aggregates of a single species in a particular space. It could be an accident of history of it might reflect our present environment. Plants have occupied the whole of ontario for only the last 10,000 years (not a lot of time) Beginning of the holocene/start of agriculture in the middle east. Doesn"t look like migration is going on in( our part of the world) With the exception of the last 50-100 years (migration of species northwards, flowering sooner migration starting again, but it is an isolated event) probably due to human influences. Kanoo, manitoba, saskatchewan was entirely underwater- doesn"t effect ontario distribution.
