Phytoplankton are the major photosynthesizers in
a. The benthic realm of the ocean
b. The ocean photic zone
c. The intertidal zone
d. The aphotic zone of a lake
Taylor, Simon, Dickey, Hogan 10th Edition
Ch. 34 The Biosphere: An Introduction to Earth's Diverse Environments
Problem 16
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Phytoplankton are the major photosynthesizers in
a. The benthic realm of the ocean
b. The ocean photic zone
c. The intertidal zone
d. The aphotic zone of a lake
Use Figures 34.5C and 34.18 to predict how global warming (rapid increase in Earth's average temperature; see Module 7.14) might affect the water cycle.
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Aquatic biomes differ in levels of light, nutrients, oxygen, and water movement. These abiotic factors influence the productivity and diversity of freshwater ecosystems.
a. Productivity, roughly defined as photosynthetic output, is high in estuaries, coral reefs, and shallow ponds. Describe the abiotic factors that contribute to high productivity in these ecosystems.
b. How does extra input of nitrogen and phosphorus (for instance, by fertilizer runoff) affect the productivity of lakes and ponds? Is this nutrient input beneficial for the ecosystem? Explain.
In the climograph below, biomes are plotted by their range of annual mean temperature and annual mean precipitation. Identify the following biomes:
Arctic tundra
Coniferous forest
Desert, grassland
Temperate forest,
Tropical forest.
Explain why there are areas in which biomes overlap on this graph.