Kemisknäringsavgas

Kemisknäringsavgas is a Swedish term that translates to "chemical nutrient emission" or "nutrient pollution" in English. It refers to the release of excessive amounts of nutrients, primarily nitrogen and phosphorus, into the environment, often into water bodies. These nutrients typically originate from human activities, such as agricultural runoff containing fertilizers, untreated or inadequately treated sewage, and industrial discharges.

The consequence of kemisknäringsavgas is eutrophication, a process where an overabundance of nutrients stimulates rapid growth of algae and aquatic plants. This algal bloom can deplete dissolved oxygen in the water when the algae die and decompose, creating hypoxic or anoxic conditions that are detrimental to fish and other aquatic life. This can lead to fish kills and a significant reduction in biodiversity.

Furthermore, algal blooms can block sunlight from reaching submerged vegetation, hindering its growth. Some algal blooms can also produce toxins harmful to both aquatic organisms and humans. Addressing kemisknäringsavgas involves strategies like improving wastewater treatment, promoting sustainable agricultural practices to reduce fertilizer use and runoff, and managing industrial emissions. International cooperation is often necessary as nutrient pollution can cross geographical boundaries.