ECOLTEST2

ECOLTEST2 - 9:30:2010 o Some problems caused by invasives...

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9:30:2010 o Some problems caused by invasives Competitive exclusion (congress) Disrupting pollination syndromes (Chinese tallow) Lowers (increases) nutrient cycling Changes ecological function (zebra mussel) Severe predation rates (mongoose) Increase disease (pathogens are invasive species) Not all invasive species are bad: o Kudzu increases the nitrogen content in soil and once its increased you can kill the kudzu Are invasives always “bad”? o What if they are N-fixers and enrich low nutrient soils? Lespedeza enriches piedmont soils Guava also help restoration o What if they provide o W o W European Teasel o Introduced non-native, non-invasive o Kind of like wool, cotton o Used to make coats in old times o Teasel flowers in a spiral o Elaiosomes: mimics of insects; have the similar protein; Fire Ants in the south! o Good example how evolution can have big impact o Kill sea turtles o Solenopsis invicta from seasonally flooded areas in Southern
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This note was uploaded on 02/05/2011 for the course ECOL 3530 taught by Professor Staff during the Spring '08 term at UGA.

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ECOLTEST2 - 9:30:2010 o Some problems caused by invasives...

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