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Warning Over Invasive Seaweed Threat to Ireland’s Crucial Seagrass Meadows 1st July 2021 Invasive seaweed is a growing threat to Ireland’s vital seagrass meadows, according to Coastwatch Ireland. The Irish Times reports on concerns for the health of seagrass habitats around the coast affected by the presence of Sargassum muticum a brown seaweed that originates in western Pacific waters and has spread in Europe since the 1970s. In Kilmore Quay, Coastwatch says a large zostera marina seagrass meadow is being killed off by a blanket of the seaweed. Seagrass meadows are ‘blue carbon’ habitats, acting as significant stores of CO2 captured from the atmosphere. But they are vulnerable and can be easily overrun, says Coastwatch’s Karin Dubsky.

Irish seaIreland generalAtlantic oceanEvelyn cusackPaul connollyCaroline cusackDepartment of agricultureIrish marine data buoy observation networkMarine instituteDolphin groupMarine environmentCoastal notesNorth atlanticMarine wildlifeIrish whaleMarine science