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The study examined the 8,500-year rate of sea-level rise that has already induced the drowning of wetland on Louisiana’s coast. Based on these records, it found that “at rates of relative sea-level rise– meaning the combination of rising water and ground subsidence– of 6 to 9 millimeters a year, the Gulf’s marshes would disappear underwater within a half-century,” Yale E360 noted. While recent rates of sea-level rise have been measured at about 3.58 millimeters per year, subsidence is not included in that measure, and this rising will only accelerate due to human-induced climate change.
Saying No to Inaction
While the study concluded we are past the tipping point, the lead author Torbjörn Törnqvist told Nola.com that this cannot paralyze us into inaction. One important step towards that would be to build on and execute Louisiana’s 2023 Coastal Master Plan, which builds on a previous plan of the same name. This plan involves the “collective efforts of project investments [to] reduce storm surge-based flood risk to communities, provide habitats to support an array of commercial and recreational activities, and support infrastructure critical to the working coast.” Coupled with the reduction of greenhouse gases globally, this could help lengthen the life of the marshlands there. However, many have argued that “the master plan does not go far enough in addressing existential issues like the future of New Orleans,” suggesting more radical measures must be taken.
But the study doesn’t only implicate the Mississippi River Delta. What is suggests is much more ominous. The findings, as the authors note, “raise the question whether coastal marshes elsewhere may be more vulnerable than commonly recognized.” This is yet another demonstration of the need to take concerted, unified action on climate change lest these important ecosystems be destroyed. And the health of the Delta is ultimately dependent upon changing farming practices all along the Mississippi River.
by Julia Fine, ODP Contributing Writer Torrential rains have flooded “at least a quarter” of Bangladesh, Somini Sengupta and Julfikar Ali Manik reported in the New York Times last week. According to data from the National Disaster Response Coordination Center, 4.7 million people have been affected by this deluge and over 50,000 people have been […]
As the “dog days” of summer are here, so is the threat of toxic algae in lakes and ponds across the U.S., according to reports from news outlets nationwide.The Boston Globe’s David Abel reported on how the 996 small lakes on Cape Cod that had provided a respite from saltwater are now warming so rapidly that they are being “transformed by climate change” that saps their oxygen, makes them dangerous for swimming by humans and pets, and harms wildlife.
by Julia Fine, ODP Contributing Writer The largest hydroelectric dam in Africa, located in Ethiopia, is now nearly completed after nearly a decade of work, Declan Walsh reported in the New York Times this week. While many Ethiopian people are lauding the measure, Egyptian leaders have said the Grand Ethiopian Renaissance Dam (GERD) poses an […]
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