CARBON SEQUESTERING BY WORMS. “If those numbers sound small, once you take into account average earthworm densities in soil you find that earthworm-produced calcite could lock up 564kg of carbon per hectare of soil per year. Put into context, typical soil-based carbon sequestration techniques such as using cover crops, organic composts and manures, and converting degraded soils into forests could sequester 300 to 800 kg of carbon per hectare per year.”
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