BIOL 1070 Chapter Notes - Chapter 6: Alliaria Petiolata, Sanguinaria, Sanguinarine
28 Jul 2019
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Development at university of guelph campus: all development guided by campus master plan, development within 10 m of dripline at forest edge. Doug larson: fence did its job, permanent fence along dairy bush hillside, keep people out, urban forests vulnerable to exotic species" edge effects. = 5000 seeds/year, each pod 20-30 seeds: g. m. first sighted 1850s, genetically close to tiger g. m. (ireland, england, g. m. edible, grows everywhere, most ontario forests have g. m. on edges, problematic when g. m. carpets entire understory. Plants use photoreceptor protein (cryptochrome or phytochrome) to sense seasonal change, signals flower development anthesis. Insects use uv light to distinguish flowers when harvesting nectar/pollen. Birds orient by using small nuances in reflection of uv light by land objects. Niche: set biotic/abiotic conditions in which species persists, stable pop. size (hutchinson, environmental space: space occupied by organism, confined by variables to which species responds, fundamental niche: conditions species survives & persists.
