November 30, 2018 — Increasing temperatures, ocean acidification, and deoxygenation are the outcomes from climate change that will cause the most damage the world’s marine economy, according to National Climate Assessment report released by the U.S. Global Change Research Program on Friday, 23 November.
The federal program that released the report was mandated by Congress to coordinate federal research and investments in understanding the forces shaping the global environment and their impacts on society. Compiled by top scientists at 13 U.S. agencies, it paints a grim picture of the future of both U.S. and global fisheries as the effects of climate change continue to advance.
The report stated with “very high confidence” that the world stands to suffer “the loss of iconic and highly valued” habitats, and said intensifying ecosystem disruption as a result of ocean warming, acidification, deoxygenation, and other aspects of climate change will result in major changes in species composition and food web structure. In fact, these changes are already underway and have caused significant shifts in how the marine environment is functioning, especially in the warmest and coldest environments, and the report stated – also with very high confidence – these transformative impacts on ocean ecosystems cannot be avoided In the absence of significant reductions in carbon emissions.