Seagrass is one of the most important coastal habitats where young ocean-going fish such as Atlantic cod can grow and develop before setting out on the journey of life. But these critically important habitats, revealed in new research, are being damaged the world over and its not just threatening biodiversity but our food security. Some 30,000 […]
Some 30,000 km2 of seagrass (Zostera marina) has disappeared over the past two decades, about 18% of the global area. This is incredibly important. One hectare of seagrassabsorbs 1.2 kilogrammes of nutrients each year, equivalent to the treated effluent of 200 people. It can produce 100,000 litres of oxygen per day, can support 80,000 fish and 100m invertebrates – and absorb ten times as much CO2 as a pristine area of Amazon rainforest.
Providing shallow-water habitats where young ocean-going fish can grow and develop is one of the key ecosystem services that our coastal seas provide, but unfortunately we largely don’t recognise the value of them in supporting the fishery resources of vast ocean basins. We continue to allow the loss of this coastal habitat to occur throughout the world – in spite of regulations in many nations to protect key habitats and biodiversity.