BIOL 1070 Chapter Notes - Chapter 5: Alliaria Petiolata, Froghopper, Acer Saccharum
28 Jul 2019
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Gwyn govers about garlic mustard in dairy bush: garlic mustard = invasive species, found on edges & paths, native moth eating it, 3 species european insect introduced to n. a. : european weevil, moth, froghopper: have seen herbivores attack garlic mustard, deer didn"t like it, ate other vegetation, helped it invade. Edge effects: forest fragments studied long time, how habitat quality differs in interior vs. edge, effects of edge on forests w/ 3 mechanisms, abiotic factors. Differential movement radiation, temp, humidity, moisture, wind. Edge habitats = intermediate between 2 adjacent habitats. Forest edges hotter, drier w/ solar radiation than interior: access. Edge provides access to both resources: species interactions. More nest predation for birds in edge habitats. Population growth: change in # individuals some time period, uses demographic data, pop. growth rate = initial pop + birth rate death rate + immigration emigration.
