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The federal government is asking for more than half a billion dollars for dozens of projects aimed at bolstering America’s coastlines against rising seas. The 149 projects range from shoreline habitat recovery in Florida, restoration of salmon streams in Alaska, and experimental microplastic filters for New York. With a total price tag of $562 million,…
Vegetated coastal ecosystems, in particular mangroves, tidal marshes and seagrasses are highly efficient at sequestering and storing carbon, making them valuable assets for climate change mitigation and adaptation. The state of Queensland, in northeastern Australia, contains almost half of the total area of these blue carbon ecosystems in the country, yet there are few detailed regional or state-wide assessments of their total sedimentary organic carbon (SOC) stocks. We compiled existing SOC data and used boosted regression tree models to evaluate the influence of environmental variables in explaining the variability in SOC stocks, and to produce spatially explicit blue carbon estimates. The final models explained 75 % (for mangroves and tidal marshes) and 65 % (for seagrasses) of the variability in SOC stocks. Total SOC stocks in the state of Queensland were estimated at 569 ± 98 Tg C (173 ± 32 Tg C, 232 ± 50 Tg C, and 164 ± 16 Tg C from mangroves, tidal marshes and seagrasses, re
An area of salt marsh twice the size of Singapore has disappeared since the turn of the century, NASA scientists determined by analyzing satellite images from around the globe. Severe storms were partially responsible for the loss, which resulted in “significant” carbon emissions, according to a recent study based on the maps. The study, published […]