A guest post by Andrew McQueen, US Army Corps of Engineers
Researchers around the world are focusing more on the role of anthropogenic (human-made) sounds in marine ecosystems. In the last half century, as we have industrialized and expanded our use of the “blue” ocean economy (maritime transport, fisheries, and renewable energy), some regions have observed incremental increases of anthropogenic underwater sounds. However, the ecological consequences, or risks, of these changing underwater soundscapes remain largely unknown.
During the past few decades, coral reefs—the rainforests of the sea—have been declining at an alarming rate around the world. The threats faced by these extremely diverse and fragile ecosystems are numerous and difficult to control. In addition to weather-related damage, pollution, ocean acidification, coral mining, disease, overfishing and destructive fishing practices, coral reefs are subjected to the negative effects of global warming—increasing sea surface temperatures lead to coral bleaching, a process that makes corals become bone white and often die. A couple of years ago, David Gruber wrote in the New York Times, “It is difficult being a coral reef scientist in 2012. The system we are studying is dwindling—and we feel there is an urgent need to understand the ecosystem while it still has a pulse. Coral reefs are on target to be one of the first major ecosystems to be pushed to an unproductive state.” Continue reading →