What are major types of freshwater systems and how have huma

What are major types of freshwater systems and how have human activities affected them?

and some examples

Solution

The major types of fresh water systems are

1 lentic: includes slow moving water example pools, ponds and lakes

2. Lotic: fast moving water like rivers and streams

3. Wetlands: these are the areas where the soil is saturated for atleast part of the time

Humans from time immemorial have disrupted or affected fresh water sources

1. Humans have constructed dams and canals that caused fragmentation of large rivers. It destroys aquatic habitat by reducing water flow.

2. Agricultural run off and industrial effluent causes water pollution. Agricultural run off causes eutrophication of a water body that further leads to loss of biodiversity

Minimata disease in Japan caused due to mercury poisoining is considered as one of the biggest examples of water pollution.

3. Inland wetlands are also being drained. For example more than half of inland wetlands in US in 1600\'s no longer exist.