Findings shed light on seagrass needs

Seagrass beds, which provide home and food for fish, manatees, sea turtles and other animals, find themselves in peril. A new study shows how much sunlight is needed to keep the seagrass healthy. Loss of seagrass means fish, crabs and other animals lose their homes and manatees and sea turtles lose a source of food. Nutrients, such as phosphorous, may prevent seagrass from getting the sunlight it needs to thrive. Nutrients may come from many sources, among them fertilizers used in agriculture, golf courses and suburban lawns, pet waste and septic tank waste.

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