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The Impacts of Human Sewage in Coastal Marine Ecosystems
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Skeptical Science New Research for Week #41, 2021
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Zhejiang University: ZJU Scholar contributes to IPCC Six Assessment Report
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Abstract
Tidal marshes rank among the ecosystems with the highest capacity to sequester and store organic carbon (C ) on earth. To inform conservation of coastal vegetated ecosystems for climate change mitigation, this study investigated the factors driving variability in carbon storage. We estimated soil C stocks in tidal marshes across temperate Western Australia and assessed differences among geomorphic settings (marine and fluvial deltas, and mid-estuary) and vegetation type (Sarcocornia quinqueflora and Juncus kraussii) linked to soil biogeochemistry. Soil C stocks within fluvial and mid-estuary settings were significantly higher (209 ± 14 and 211 ± 20 Mg C ha , respectively; 1-m-thick soils) than in marine counterparts (156 ± 12 Mg C ha ), which can be partially explained by higher preservation of soil C in fluvial and mid-estuary settings rich in fine-grained (
In Japan, scientists look to the past to save the future of grasslands
by Marlowe Starling on 8 March 2021
Ecologists in Japan recorded several rare and endangered plant species in old grasslands that are not present in younger ones, mirroring findings from other continents that highlight the rich biodiversity of these landscapes.
Grasslands face growing threats from humans on a global scale, especially land use change like agriculture and urban growth.
But some human interventions have had a beneficial effect on biodiversity conservation in Japan, such as the maintenance of ski runs, which provide a safe haven for many of the plant species and pollinators that keep grassland ecosystems healthy.