FOR200H1 Lecture 8: Temperate Rainforests Lecture & Reading Notes, Nov. 13.

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17 Dec 2017
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For200 lecture 8 - the forgotten rainforests - temperate rainforests. Modern distribution is less than historic distributions. Historically north and south of the equator within temperature latitude. Areas with higher temperature and less precipitation tend to be inland. Highly wet areas tend to have lower temperatures. Pacific northwest has the most temperate forests in a ribbon. Inland temperate rainforest ribbon from northern idaho to prince george. Great bear rainforest is located in british columbia. Moderate climate with low annual temperature fluctuation. Mean temperature of warmest summer quarter is 11-18 c. Tree canopy provides shading and yearlong cooling. Up to 19% annual precipitation in driest quarter. 1 acre of rainforest consists of about 1 billion needles. Lichens that live on needles are air quality barometers . Presence of lichens indicates clean air quality. Trees hold on to and gradually release water through evapotranspiration. Trees provide structural support by anchoring soils and sediment. Carbon storage helps ameliorate global carbon dioxide emissions.

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