The researchers proposed new monitoring plans as well as ones already used by other organizations.įor example, for monitoring sea turtles the authors recommend an existing project called Biological and Environmental Monitoring and Archival of Sea Turtle Tissues (BEMAST) that is a collaboration between NIST, the National Oceanic and Atmospheric Administration (NOAA) and the U.S. The authors include recommendations for the frequency of collecting samples (at minimum once per year), number of samples taken, and the best way to collect and store them. But bivalves, such as mussels and clams, might be better bioindicators for other plastics near the seafloor." Also, different species might be experts at detecting the presence of plastics of a particular size, whether it's visible pieces of plastic or nearly invisible microfibers.Īnother key part of the study was developing monitoring plans for these marine species. When sea turtles forage, they might reveal the presence of certain plastics. We are looking for changes in plastic pollution over time to determine if things are getting worse or better."Īt the same time, Lynch said, "we recognize there is no one species that can cover everything. "The first thing is accessibility: Is it easy to get samples of these species? Second, we are looking for species impacted by plastic. "There are a handful of things that make a good bioindicator," said Savoca. Research activities approved by NOAA NMFS permit 18688. NIST postdoc Katy Shaw processes liver samples from a sea turtle as part of BEMAST. The criteria for species to serve as bioindicators included a variety of factors, such as their distribution throughout the ocean, both the North Pacific and globally, and whether they are consumed by humans. Within the highlighted species are a few that were not previously identified as potential bioindicators, such as the Manila clam, multiple anchovy species, and a small seabird known as Leach's storm petrel. These best bioindicators ranged from the Pacific oyster and long-nosed lancetfish to the green sea turtle and black-footed albatross. Using a scoring rubric that was modified from a similar one used by a United Nations working group, the researchers evaluated 352 different marine species and identified 12 as the best potential bioindicators for the North Pacific. We're making the best use of animals that have already died from a variety of reasons and collecting the data from them," said NIST researcher Jennifer Lynch. This makes the human job of monitoring plastic pollution easier. "These animals forage in the ocean, ingest the plastic, and bring it back to us. The collaboration focused on marine wildlife species that are already known to ingest plastic pollution. Site of the "Great Pacific Garbage Patch," the North Pacific is an ocean region that is one of the most heavily impacted by plastic pollution, further emphasizing the importance of the study. The researchers focused on the North Pacific Ocean because they are part of a working group under a multinational science organization known as the North Pacific Marine Science Organization (PICES) that coordinates research in the region. Plastic pollution is a problem that affects all of the world's oceans.
It's imperative to synthesize this data and turn it into knowledge that can help us understand and mitigate this problem," said Matthew Savoca, a researcher at Stanford University's Hopkins Marine Station in Pacific Grove, California.
"The scientific community has an incredible amount of data on which marine species so far are ingesting plastic pollution. The researchers published their findings in the scientific journal Environmental Pollution. The results will help improve information important to understanding the extent of plastic pollution in the North Pacific Ocean, the effectiveness of plastic reduction measures, and possible impacts on wildlife. The study provides a systematic framework for collecting data from these marine species to minimize variability in results observed between different organizations. To advance these efforts, several research organizations, including the National Institute of Standards and Technology (NIST), have conducted a meta-analysis, in which they statistically analyzed and combined current scientific literature to identify key marine species for monitoring plastic pollution in the North Pacific Ocean.
0 kommentar(er)
