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BIOL 2903V- Mar 20a 2013

BIOL 2903V- Mar 20a 2013 - Lecture 10a Fields can be like...

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Lecture 10a Fields can be like prairie, tundra, mudfats, and even burnt lands. Old ±elds support many non-native species. Ballast material ²rom shores o² countries they le²t ²rom to give boat weights, dump out material where they land and the material carries seeds o² plants. Many plants arrived ²rom ballast loads, spread. Used to be lack o² grazers- ²orest. Non native Dandelions, Blueweed, Chickory, Queen Anne ʼ s Lace (don ʼ t need to know names I don ʼ t think). Groundhogs graze, rare in ²orest, but open area trans²ormation they are more common, can climb trees when alarmed. Meadow Voles can be abundant, most important small mammal o² Ontario drive ecosystem, many predatory animals eat them. Red ²oxes have increased too. Coyotes only appeared in Ontario around 1900. Great Gray Owls usually occur here only during Irruptions (meadow voles), Snowy Owl, Eastern Bluebirds nest in cavities near ±elds- nest boxes provide sites ²or them. Non- native species are also ²ound in ±eld habitats: Gray Partridge (Hungarian Partridge)
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BIOL 2903V- Mar 20a 2013 - Lecture 10a Fields can be like...

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