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Lecture 14 THE BIOSPHERE

Lecture 14 THE BIOSPHERE. Lakes . Topography, climate & geologic history dictate the numbers, kinds of organisms and their dispersion. Based on this, conditions range from oligotrophy to eutrophy. Oligotrophic lakes: lakes often deep, clear, low in nutrients.

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Lecture 14 THE BIOSPHERE

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  1. Lecture 14THE BIOSPHERE

  2. Lakes • Topography, climate & geologic history dictate the numbers, kinds of organisms and their dispersion. • Based on this, conditions range from oligotrophy to eutrophy. • Oligotrophic lakes: • lakes often deep, clear, low in nutrients. • primary productivity isn’t great. • Eutrophic lakes • shallow, nutrient rich, high in primary productivity. Why? • Eutrophication – any process that enrich body of water with nutrients.

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