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Direct soil carbon measurement techniques are being explored as a method to improve accuracy in carbon credit markets, especially in agriculture. Measuring stored soil carbon rather than relying on predictive models can provide solid data on the effectiveness of climate-smart agricultural practices. It is believed that this method will enhance the reliability of carbon credits, offering greater confidence to buyers and better supporting global climate goals. Soil carbon measurement is also being recognised as a tool to boost soil health and agricultural sustainability.
Reliable Verification of Soil Carbon Changes
According to a study published in Environmental Research Letters, using direct soil carbon measurement methods alongside epidemiology-based study designs could address the challenges of verifying carbon storage. By sampling approximately 10 percent of fields across large areas, the research team demonstrated that carbon storage could be accurately measured over extended periods. These findings indicate that scaling up direct measurement techniques may offer a cost-effective alternative to predictive models in carbon credit markets.
Expert Insights on Soil Health and Climate Benefits
Mark Bradford, E.H. Harriman Professor of Soils and Ecosystem Ecology at Yale School of the Environment, noted in the study’s findings that direct measurements could extend beyond carbon markets. When talking to phys.org, he highlighted their potential for validating greenhouse gas accounting and supporting national emission reporting. This approach could also improve soil biodiversity, nutrient retention and resilience to extreme weather, leading to enhanced food security.
Technological Tools Supporting Farmers
To assist farmers, Eric Potash, research scientist at the Agroecosystem Sustainability Center, developed an open-source application enabling users to evaluate the cost-effectiveness of soil carbon projects. This tool helps calculate profitability based on variables like project size and sampling strategies.
As noted by the study’s authors, addressing measurement concerns is key to supporting policies and investments that protect soil health. By ensuring accurate and scalable carbon storage verification, this approach aims to strengthen confidence in the environmental and economic benefits of climate-smart agriculture.
(Disclaimer: New Delhi Television is a subsidiary of AMG Media Networks Limited, an Adani Group Company.)
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A significant revelation about the dietary habits of early human ancestors suggests a strong reliance on plant-based foods rather than meat consumption. Evidence from fossilised teeth of Australopithecus africanus has provided a clearer picture of their dietary preferences. These findings, based on the chemical composition of tooth enamel, indicate that this early bipedal species, existing over 3 million years ago, may have subsisted largely on vegetation and possibly other non-meat sources of energy.
Study Analyses Fossilised Teeth for Clues
According to a study published in Science, researchers analysed nitrogen-bearing organic material within the enamel of fossilised teeth from Australopithecus africanus. A total of 43 specimens from the Sterkfontein caves in South Africa, including seven individuals of the species, were examined. The nitrogen isotopic ratios present in the samples were compared to those of other extinct mammals from the same site and to modern African mammals. These comparisons revealed that the early humans’ diet was variable but lacked a significant proportion of mammalian meat.
Implications for Early Human Evolution
As explained by Dr Tina Lüdecke, geochemist at the Max Planck Institute for Chemistry, to Science News, the findings provide insights into the dietary behaviours of early ancestors. The absence of a meat-rich diet suggests that adaptations such as bipedalism, shorter snouts, and the ability to thrive in savanna ecosystems likely preceded the consumption of high-protein meat. These traits are believed to have played a role in early human survival and ecological success.
Possible Protein Sources Beyond Meat
Dr Lüdecke further noted that occasional consumption of meat or energy-rich termites by A. africanus cannot be ruled out. Termites, being a reliable food source, might have contributed to their diet without influencing the nitrogen isotopic markers significantly. Observations of modern apes fishing for termites reinforce this possibility.
This research lays the groundwork for future investigations into dietary transitions among later human species, potentially shedding more light on the role of diet in human evolution.
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