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Nutrients are pollutants of concern because they can lead to eutrophication.

Eutrophican is a term used to describe an excess of nutrients that can stimulate an explosive growth of algae or an algal bloom in surface water. This increase in algae will cause the water to become low in dissolved oxygen. Low dissolved oxygen and toxic algae blooms can lead to fish kills, toxic shellfish poisoning, and other public health issues. All of these affects combined can select for only certain species of fish that are low-oxygen tolerant species and decrease fish diversity.

[/fusion_text][/fusion_builder_column][fusion_builder_column type=”1_2″ layout=”1_2″ spacing=”” center_content=”no” hover_type=”none” link=”” min_height=”” hide_on_mobile=”small-visibility,medium-visibility,large-visibility” class=”” id=”” background_color=”” background_image=”” background_position=”left top” undefined=”” background_repeat=”no-repeat” border_size=”0″ border_color=”” border_style=”solid” border_position=”all” padding=”0px 20px 0px 20px” margin_top=”” margin_bottom=”” animation_type=”” animation_direction=”left” animation_speed=”0.3″ animation_offset=”” last=”no”][fusion_title margin_top=”” margin_bottom=”” hide_on_mobile=”small-visibility,medium-visibility,large-visibility” class=”” id=”” size=”4″ content_align=”left” style_type=”underline solid” sep_color=””]

Probable Causes

[/fusion_title][fusion_checklist icon=”fa-circle” iconcolor=”” circle=”” circlecolor=”#55a098″ size=”14px” hide_on_mobile=”small-visibility,medium-visibility,large-visibility” class=”” id=””][fusion_li_item icon=””]Sewage treatment plants[/fusion_li_item][fusion_li_item icon=””]Septic tanks[/fusion_li_item][fusion_li_item icon=””]Urban runoff[/fusion_li_item][fusion_li_item icon=””]Agricultural runoff[/fusion_li_item][fusion_li_item icon=””]Mississippi River diversions[/fusion_li_item][fusion_li_item icon=””]Channelization of runoff directly into the estuary[/fusion_li_item][fusion_li_item icon=””]Channel dredging and loss of wetlands resulting in reduced capacity of the estuary to filter out nutrients[/fusion_li_item][/fusion_checklist][/fusion_builder_column][fusion_builder_column type=”1_2″ layout=”1_2″ spacing=”” center_content=”no” hover_type=”none” link=”” min_height=”” hide_on_mobile=”small-visibility,medium-visibility,large-visibility” class=”” id=”” background_color=”” background_image=”” background_position=”left top” undefined=”” background_repeat=”no-repeat” border_size=”0″ border_color=”” border_style=”solid” border_position=”all” padding=”0px 20px 0px 20px” margin_top=”” margin_bottom=”” animation_type=”” animation_direction=”left” animation_speed=”0.3″ animation_offset=”” last=”no”][fusion_title margin_top=”” margin_bottom=”” hide_on_mobile=”small-visibility,medium-visibility,large-visibility” class=”” id=”” size=”4″ content_align=”left” style_type=”underline solid” sep_color=””]

Probable Impact

[/fusion_title][fusion_checklist icon=”fa-circle” iconcolor=”” circle=”” circlecolor=”#55a098″ size=”14px” hide_on_mobile=”small-visibility,medium-visibility,large-visibility” class=”” id=””][fusion_li_item icon=””]Algal blooms, floating masses of algae and noxious odors[/fusion_li_item][fusion_li_item icon=””]Reduced recreational value of beaches and water bodies[/fusion_li_item][fusion_li_item icon=””]Anoxic conditions resulting in fish kills[/fusion_li_item][fusion_li_item icon=””]Changes in species composition and population[/fusion_li_item][fusion_li_item icon=””]Decreases in wildlife populations with sport and commercial value[/fusion_li_item][fusion_li_item icon=””]Reduced recreational and commercial value of wetlands and the estuaries[/fusion_li_item][/fusion_checklist][/fusion_builder_column][/fusion_builder_row][/fusion_builder_container]