Discover the Incredible Longevity of This Clam Species and the Urgent Threats They Face

How can we look into the future? One interesting way is by studying the past. Quahog clams, which can live up to 500 years, are nature’s little time capsules. Their shells hold a wealth of information about ocean conditions over centuries. Scientists have learned to read these records and use them to predict what might happen to our oceans.

Recently, researchers have raised alarms about the Atlantic Ocean. They think we might be approaching a “tipping point.” This means significant, possibly irreversible changes in ocean currents—changes that could affect the global climate. With only limited ocean data from the past, these clams provide crucial insights.

Dr. Beatriz Arellano Nava explains that stable data from the distant past helps scientists anticipate these tipping points. “The bands in clam shells give us an unbroken annual record covering hundreds of years,” she says. This long-term perspective is essential.

Researchers are also examining dog cockles, another type of clam, to understand ocean patterns. By studying the growth rings in their shells, scientists can trace historical ocean conditions. They found evidence suggesting that the Atlantic is losing stability, which could signal an approaching tipping point.

Professor Paul Halloran from the University of Exeter notes that stable systems usually bounce back quickly from disruptions. However, when a system destabilizes, it takes longer to recover. The research shows two major destabilization events in the last 150 years, linked to warming trends in the Arctic. These changes could have widespread effects on global weather patterns.

The implications are serious. Melting polar ice, driven by climate change, is weakening these ocean currents. To avert potential tipping points, reducing greenhouse gas emissions is critical.

Research published in the journal Science Advances emphasizes the need for timely action. The clock is ticking, and clams hold some of the answers. Understanding these natural archives can help us better predict and prepare for climate shifts ahead.

Source link