What is the biggest threat to lakes?

Pollutants from residential, agricultural, and industrial areas reduce water quality. Land development decreases the amount of wildlife habitat. Fish populations have been declining in recent years as a result of these threats and increased fishing pressure.



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Threats to the Great Lakes' ecosystems, include invasive species, climate change, pollution, and habitat destruction. Climate change affects water temperatures, weather patterns, and lake levels. Pollutants from residential, agricultural, and industrial areas reduce water quality.

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The following are some of the most important basic factors that give unique character to each lake ecosystem. Climate: Temperature, wind, precipitation, and solar radiation all critically affect the lake's hydrologic and chemical characteristics, and indirectly affect the composition of the biological community.

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Evaporation draws water from the lakes causing levels to decline. Evaporation is greatest when the temperature difference between the water and the air is greatest. Such conditions occur in the fall, when the air has cooled but the water still retains some of the heat gained during the summer.

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Invasive (Asian) Carp are one of the biggest threats to the Great Lakes. These non-native fish pose a significant risk if they are allowed to become established.

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