We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Quantifying Marine Surface Microplastics in La Parguera Natural Reserve, Puerto Rico
AI summary Read the abstract
Scientists tested the waters of a Puerto Rico marine reserve for microplastics—tiny plastic bits from broken-down trash and packaging—and found surprisingly low levels, similar to what's found far out in the open ocean. This suggests local coastal sources (like beach litter) aren't the main culprit; instead, ocean currents may be carrying plastics in from elsewhere. While this study didn't test health effects, microplastics are increasingly found in seafood and drinking water, and this research helps establish a baseline to track whether pollution in this reserve gets worse over time.
Microplastic pollution has become a global concern due to its widespread impacts on organisms and ecosystems. While there have been a few studies quantifying microplastics in inland areas of Puerto Rico, none, to our knowledge, have studied nearshore coastal surface waters. This study, therefore, presents the first assessment of microplastic concentrations and descriptions in the surface waters of La Parguera Natural Reserve, southwestern Puerto Rico. Using 333-micron plankton net trawls, we found low mean ± standard deviation microplastic concentrations of 0.02 ± 0.07 microplastic particles m−3 (95% confidence interval = 0.01 to 0.04 microplastic particles m−3). The most prevalent polymers were high-density polyethylene (48%) and polyethylene (32%), followed by polypropylene (11%) and polystyrene (7%). The most common colors were white (50%), blue (34%), black (8%), red (5%), and colorless (3%). Subsequently, the common structures found were fragments (78%), filaments (12%), films (8%), and fibers (2%). No clear coastal gradient or seasonal patterns were detected (p < 0.05), and mean concentrations were similar to previously surveyed oceanic waters from the Caribbean, suggesting coastal sources of marine microplastics were minimal compared to oceanic sources. This study provides a foundational understanding of microplastics in the coastal waters of La Parguera Natural Reserve and provides critical baseline data for detecting potential future changes in microplastic concentrations.
More Papers Like This
Monitoring microplastics in coastal waters of a biosphere reserve: a case study in Menorca (Spain)
AI summary Read the abstract
Researchers sampled surface waters at 90 sites around the UNESCO-protected island of Menorca, Spain, finding microplastics in every single sample at consistent levels across two years. Fiber-type plastics dominated everywhere except the commercial port, where packaging foam made up nearly half of all particles — pointing to shipping activity as a local source. The study establishes a harmonized monitoring baseline useful for tracking whether EU marine pollution policies are actually working.
Distribution of microplastics in the tidal flats of La Parguera, Puerto Rico
AI summary Read the abstract
Researchers studied the distribution of microplastics in tidal flat sediments behind mangrove forests at four sites in southwest Puerto Rico. They found an average of about 149 microplastic particles per kilogram of sediment, with abundance increasing at greater distances from mangrove trees. The study suggests that mangrove density and local human activity levels influence how microplastics accumulate in these critical coastal ecosystems.
Microplastic pollution in a philippine protected area: evidence from Siargao Island’s surface waters and Siganus spp.
AI summary Read the abstract
Scientists found tiny plastic pieces in ocean waters and fish around a protected island in the Philippines, with nearly 80% of fish containing plastic particles in their stomachs. These microscopic plastics can move up the food chain when people eat contaminated fish, potentially affecting human health. The study shows that even protected ocean areas aren't safe from plastic pollution, highlighting the need for better waste management and reduced plastic use.
Floating microplastic pollution in the vicinity of a marine protected area and semi-enclosed bay of Peru
AI summary Read the abstract
Researchers conducted a baseline survey of floating microplastics near a marine protected area and semi-enclosed bay in northern Peru. They found an average concentration of 0.22 microplastic particles per liter, predominantly blue polyethylene terephthalate fibers. The study suggests that local surface currents within the semi-enclosed Sechura Bay may trap and accumulate floating microplastics regardless of the sampling season.
Microplastic distribution in the marine and freshwater ecosystems of Cocos Island National Park, Costa Rica
AI summary Read the abstract
Researchers analysed microplastic distribution in both marine and freshwater ecosystems of Cocos Island National Park, Costa Rica, collecting 288 samples of water, sediment, and biota and identifying 178 microplastic particles. The study found uniform distribution around the island in both ecosystems, with higher abundance and larger sizes in the marine environment, suggesting that atmospheric deposition, air-sea exchange, and long-range transport rather than local human activity are the primary sources of freshwater contamination.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.