Climate warning
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British Isles

Climate warning

Lough Neagh ‘dying in plain sight’ due to vast algal blooms

Northern Ireland’s Lough Neagh, the largest lake in the British Isles, has been hit by recorded levels of potentially toxic blue-green algae that regional agencies say have not been seen since the 1970s. Campaigners say the lake is “dying in plain sight” as vast algal blooms choke the aquatic life and bird and insect wildlife plummets. The blooms are thought to be driven by slurry and other runoff from nearby farmland, as well as discharges of human sewage at the body where Northern Ireland sources nearly half of its drinking water. https://www.theguardian.com/uk-news/2023/aug/23/lough-neagh-dying-in-plain-sight-say-campaigners-due-to-vast-algal-blooms

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  • Rukia Ahmed Abdi

    42 w

    Immediate mitigation are needed to avert this

    4
    • Komu Daniel

      42 w

      action need to be taken urgently

      1
      • Ann Nyambura

        42 w

        This decline is a call to action for the stakeholders

        8
        • Gorffly mokua

          42 w

          Urgent action required!

          3
          • DIPANJANA MAULIK

            42 w

            Algal bloom takes place when the nutrient content increases in water. Nitrogen and Phosphorus are essential nutrients for plant growth. Higher concentration of nitrogen and phosphorus triggers excessive growth of blue-green algae in water, which is known as algal bloom. Higher growth of algae consumes almost all Dissolved Oxygen during respiration which causes severe depletion of Dissolved Oxygen in water. As other aquatic lives also need oxygen for respiration, reduction of dissolve Oxygen threatens their survival. Zebra mussels play a key role in controlling release as well as uptake of Nitrogen in waterbody. "Zebra mussels primarily enhanced the recycling of N to the water column by releasing mineralized algal biomass in the form of ammonium and by stimulating dissimilatory nitrate reduction to ammonium (DNRA)" (Ref: Zebra mussels primarily enhanced the recycling of N to the water column by releasing mineralized algal biomass in the form of ammonium and by stimulating dissimilatory nitrate reduction to ammonium (DNRA). Notably, however, not only denitrification and DNRA, but also dinitrogen (N 2) fixation was measured in association with the holobiont. Notably, however, not only denitrification and DNRA, but also dinitrogen (N 2) fixation was measured in association with the holobiont). The detergents still contain phosphates and, therefore, if domestic wash water is discharged without treatment in a pond or water body then chances of algal bloom increases many folds. Nitrogen and Phosphorus rich fertilizers are used to increase yield of crop and, therefore, agricultural runoff also contributes to increase of nitrogen and phosphorus content of recipient water body. Prevention of discharges from the sources of nitrogen and phosphorus can enliven the beautiful Lough Negah. Temperature of the lake has increased by 1 degree, which means the DO saturation limit has decreased. In other words, the lake can hold much less oxygen than before. It is important to maintain the DO level in water by reducing algal content. Algae and microbes usually have a beautiful symbiotic relationship. It is essential to strike a balance among algae and bacteria at a higher temperature in the lake. The lake can be saved but "we" must act fast because we really do not have much time.

            10
            • Hilda Wangui

              42 w

              Urgent action needed to secure the water sources

              20
              • rosebellendiritu

                42 w

                Just a matter of time and it will be "beyond repair".sad reality

                6
                • Joseph Githinji

                  42 w

                  This is absurd, mitigation strategies have to be set immidately.

                  21
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