A plastic bottle or floating chunk of styrofoam is obvious plastic pollution. But to fragile coral reefs, it could be the tiniest bits of microplastic that are most devastating!
Coral reefs worldwide are under threat from natural and human-made stressors. These stressors are tough to avoid when dredging and plastic pollution are added to the existing climate change. At EPA’s Coral Research Facility – an indoor wet lab in Gulf Breeze, Florida – scientists are focused on the study of how stressors like sedimentation, ocean acidification, and microplastics are impacting corals’ health.
Recently, EPA scientists studied how microplastics impact two different species of coral and found that long-term exposure to microplastics impaired the corals’ growth. Specialized lab equipment at the facility allows researchers to estimate corals’ 3-D surface areas using 2-D photogrammetry. Unlike other measurement methods that can destroy coral samples, photogrammetry is non-destructive and allows researchers to measure the growth rate of corals without harming them throughout experiments.
“What is still unknown are the exact mechanisms that are causing adverse effects,” EPA Coral Biologist, Cheryl Hankins explains. “Ingested microplastics could block the corals’ digestive tracts, which would either leave them feeling satiated, like they have a full stomach, or prevent digestion of their natural diet.”
Between our threatened corals and the mighty environmental role played by mangroves it’s important that we all stay aware of both the threats – and the ways that we can support large scale advocacy and actions. For instance, one company you can support and follow is Starboard. Learn more about their “plastic “blue” sustainability programs here. Lots of great stories.
Be a “blue” force all summer – pick up plastic during and after paddling, bring your reusable water bottle and reef safe sunscreen. Our Ocean/lakes/ rivers, streams and coral reefs will thank you. #starboardsup #bluetiki #coracoragoesgreen
Elder SUP 