Coastal Clams: The Heat is On

The future looks hot for coastal clams. As the climate warms, heatwaves are expected to become more frequent and intense. This is bad news for certain types of clams that live in shallow waters along coasts. These clams are not only important for the environment but also for the economy, especially in places like the Galician Rías Baixas in northwest Spain. Scientists have been studying how these heatwaves might affect four types of clams: Ruditapes decussatus, Ruditapes philippinarum, Venerupis corrugata, and Cerastoderma edule. They used complex models to predict future temperatures in the air and water. The results show that heatwaves will become more common, last longer, and be more intense, especially in the summer. This is particularly true for the inner parts of estuaries, where the water can get very warm due to hot air and still winds. Some clam species are more at risk than others. Venerupis corrugata and Cerastoderma edule are in trouble. They live closer to the surface and can't handle the heat as well. On the other hand, Ruditapes decussatus and Ruditapes philippinarum seem to be more resilient. They live deeper in the sediment and can better withstand the rising temperatures. This is a big deal because these clams are important for both the ecosystem and the economy. If heatwaves make them more vulnerable, it could have serious consequences. It's a reminder that climate change affects more than just the weather. It impacts the food chain and the livelihoods of people who depend on it. So, what can be done? More research is needed to fully understand the effects of heatwaves on these clams. But one thing is clear: protecting these species means protecting the coastal ecosystems and the communities that rely on them. It's a complex issue, but it's one that needs attention. The heat is on, and it's time to act.