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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.
As California’s drought conditions are worsening, Nestle is pumping millions of gallons of water from the San Bernardino forest. State water officials have drafted a cease-and-desist order to force the company to stop overpumping from Strawberry Creek, which provides drinking water for about 750,000 people.
The ice-out date for Maine’s Lake Auburn is now three weeks earlier than it was two centuries ago, the Portland Press Herald reports, and other lakes across New England show similar trends. Climate change is not good for ice, and that includes Maine’s lakes that freeze over every winter.
Why This Matters: A disrupted winter with lakes that “defrost” earlier has multiple knock-on effects for freshwater: in addition to harming fish in lakes, the resulting large cyanobacteria algae blooms that form can be harmful to human health.
by Ashira Morris, ODP Staff Writer Drought conditions cover 85% of Mexico as lakes and reservoirs dry up across the country. Mexico City is experiencing its worst drought in 30 years, and the reservoirs and aquifers are so depleted that some residents don’t have tap water. The capital city relies on water pumped in from […]
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