Contrary to popular belief, there are numerous ecological and biological consequences to the widespread construction of large dams nowadays, namely with regards to the health and sustainability of nearby rivers and wildlife. With this notion in mind, let’s take a quick look at the problems caused by modern dams and the resultant effects on nearby waterways.
When a dam is erected, the free-flowing river systems in the area are immediately placed under existential duress. The water temperatures change; the biological makeup of neighboring rivers begins to oscillate and undulate; and most importantly, dams tend to disrupt the organic processes within a self-sustaining environment. As a result, many of these dams end up serving as carbon sinks for atmospheric greenhouse gasses due to the decreased efficiency of biological processes in the surrounding areas, which leads to the extinction of certain species, and likewise, the development of pathogenic bacteria and harmful green algae in many areas.
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