There is growing evidence that seagrasses are experiencing declines globally due to anthropogenic threats (Short and Wyllie Echeverria 1996, Duarte 2002, Orth et al. 2006). Runoff of nutrients and sediments that affect water quality is the greatest anthropogenic threat to seagrass meadows, although other stressors include aquaculture, pollution, boating, construction, dredging and landfill activities, and destructive fishing practices. Natural disturbances such as storms and floods can also cause adverse effects.
Climate change is a major threat to global biodiversity. From the tropics to the Poles, the worlds ecosystems are all under pressure. A study published in the scientific journal Nature posited that 15 to 37% of terrestrial animal and plant species could be at risk of extinction because of human-induced impacts on climate (Thomas et al., 2004). Scattered across the four corners of the Earth, European Union overseas entities, are home to a biological diversity that is as rich as it is vulnerable.