Environmental Impacts on Lakes
The environmental conditions a lake may contain depends on a variety of factors: the watershed, geology, climate, human influence, and the lake characteristics. With a constant collection of data and readings collected on these lakes, no one can come to a real conclusion to provide any understanding or even make predictions of a specific lake. Each lake has its own uniqueness, and thus can only be compared to data collected from other lakes.
There are issues involving the conditions of lakes. Eutrophication is a situation in which a lake can naturally take on natural, chemical, and biological changes. Over time, this can alter the ecology of a lake to an unfavorable outcome. For instance, some effects of water pollution can cause algal blooms ,which is a rapid growth of algae in a body of water, that can cause dissolved oxygen depletion, which can result in fish kills. These blooms can be naturally occurring, but others can be man-made influences, for instance, agricultural pollution run-offs that tend to carry fertilizers into the water system. Fertilizers are great for farm products, but fertilizing the water can cause an overwhelming amount of needless plant growth that can choke of oxygen right out of a lake.
There are also biological influences such as invasive plants that overrun lakes. This can replace the native plants creating a monoculture, impeding water flow, and reducing aquatic plant diversity which can cause lower water quality. An example of such an invasive plant is the ever popular torpedo grass. Due to the root and leaf structure of this invasive plant, it actually encourages storm water nutrient run off from streets and urban areas straight into the lake, while native plants are helpful in absorbing nutrient run off, and thus keeping water quality to an acceptable level.