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Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
ISBN: 9781337408332

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BuyFindarrow_forward

Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
ISBN: 9781337408332
Textbook Problem
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As global temperature rises as a result of increased atmospheric carbon dioxide, temperate zone lakes are freezing later in the winter and defrosting earlier in spring. How will these changes affect the timing of nutrient availability in these lakes? What effect would you expect this change in timing have on life in the lakes?

Summary Introduction

To explain: How a late freeze and early melt in temperate zone lakes affect the timing of nutrient availability in these lakes.

Concept introduction: Temperate zone lakes are common per unit area than other zones. These lakes are thermally stratified. The warm and cold layers are separated by a transitional thermocline.

Explanation

A late freeze during the winter and early melt during spring elongate the growing seasons of producers. Initially, the primary production will increase. This change in the composition of primary producers will affect the fish that feed on plankton. Since this will occur earlier, it may not synchronize with the timing of nutrient availability by fish in these lakes...

Summary Introduction

To explain: The effects of timing change on life lives in the temperate zone lakes.

Concept introduction: Temperate zone lakes are common per unit area than other zones. These lakes are thermally stratified. The warm and cold layers are separated by a transitional thermocline.

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