Articles tagged with Biogeochemical Cycles
A new study found that even as oak trees continue to photosynthesize late into the year, their growth stops by mid-summer. This decoupling between photosynthesis and growth suggests that increased carbon uptake may not translate to greater wood production, reducing long-term carbon storage in forests.
Long-term biochar study reveals that topsoil benefits from biochar's effect on microbial necromass carbon, with significant increase in fungal necromass carbon. In contrast, subsoil shows reduced microbial necromass carbon due to lower nitrogen availability and increased microbial nutrient mining.
Research suggests a symbiotic relationship between fish and their gut microbes produces minerals influencing ocean chemistry and the marine carbon cycle. The study found vibrio bacteria play a key role in ichthyocarbonate formation, which is linked to global nutrient cycles.
Researchers argue that biochar's long-term carbon storage potential and its soil improvement benefits should not be conflated. The authors call for a 'designer biochar' approach, tailoring products to specific end uses rather than marketing them as universally beneficial.
A new approach detects subtle chemical signatures in seawater, revealing dynamic nitrogen cycling in low-oxygen regions. This discovery sheds light on microbial communities controlling ocean productivity and the global carbon cycle.
A new study highlights the critical misunderstanding of biochar's role in fighting climate change and improving soils, warning that oversimplified claims could undermine scientific progress and carbon markets. Biochar is not a one-size-fits-all solution, and its effectiveness depends on where it is used.
Researchers discover that adding micro- and nano-scale bone char triggers a biological revival in arsenic-contaminated rice paddies, increasing urease and catalase activity and organic carbon levels. The biochar fundamentally alters soil microbiome behavior, reinforcing natural detoxification capacity by shifting microbial gene abundance.
Researchers at Tongji University have discovered that ferrihydrite is a highly effective mineral in trapping chromium and storing organic carbon. This finding has significant implications for environmental remediation, enabling the development of nature-based solutions to clean up contaminated mine soils while sequestering carbon.
Microbial community shifts from biotic to abiotic drivers under drought, with legacy effects persisting upon rehydration. Soil properties dominate recovery stages, highlighting dual focus on biology and abiotic factors for ecosystem resilience.
Researchers track ancient carbon's path in sea and its uptake by microorganisms, revealing a 30% biomass share. Photosynthesis also plays a role in assimilating hydrothermal carbon, but only a small proportion remains in the local ecosystem.
Soil erosion redistributes vast quantities of nitrogen, altering nitrogen stocks, transport, and transformation in terrestrial ecosystems. Erosion modifies soil properties and microbial communities, controlling nitrogen transformations and availability.
A team of researchers from Yokohama National University has discovered a previously unknown species of marine fungus that can kill harmful, bloom-forming algae. The new species, Algophthora mediterranea, was found to be a destructive parasite in a species of algae known to cause toxic blooms with adverse health effects on humans.
Researchers found that warming temperatures may actually reduce nitrogen gas emissions from forest soils in dry conditions, contradicting earlier predictions. The study's findings suggest that moisture levels, not just heat, play a crucial role in determining the fate of nitrogen in forests.
A new review reveals that dissolved organic matter (DOM) acts as both a buffer and accelerator of climate change, influencing carbon storage and pollution. DOM's molecular structure changes with temperature and rainfall patterns, altering its environmental behavior and biological effects.
Researchers found that nitrogen oxide production is outpaced by consumption, resulting in little emissions from the Black Sea. The study identified microorganisms responsible for the turnover of this potent greenhouse gas, highlighting the importance of further research on nitrous oxide dynamics in marine environments.
Researchers found that plant roots can actively absorb CO₂ from the soil, with this process influenced by light, fertilizer, and atmospheric conditions. Root-based CO₂ absorption may be an alternative carbon nutrition pathway.
Climate models oversimplify the role of calcifying plankton in capturing and cycling carbon, potentially underestimating the ocean's capacity to respond to climate change. Ignoring these organisms' diversity risks oversimplifying how the ocean responds to climate stressors.
A new study reveals an unusual microbial world in the Hatiba Mons hydrothermal vent fields, showcasing remarkable metabolic versatility. The microbes present demonstrate a unique ecosystem dominated by iron-driven metabolisms, which drive chemical transformations and sustain life under extreme conditions.
Researchers at UC Riverside discovered a carbon burial process in the ocean that can cause Earth's temperature to overshoot and cool down, potentially triggering an ice age. The study suggests that the planet's thermostat is not functioning as expected due to changes in atmospheric oxygen levels.
A new study found that land and ocean weathering processes are linked, influencing the amount of carbon stored or released into the atmosphere. The research proposes a continuum approach to studying weathering reactions on both land and in the ocean.
A University of Utah geoscientist analyzed carbon and oxygen isotopes in lake sediments to document profound changes arising from agriculture and rail causeway. The study reconstructs the lake's water and carbon budgets through time, highlighting two distinct human-driven shifts: one related to settlement arrival and another to the con...
A new study reveals the molecular mechanisms that enable SAR11, the most abundant marine bacteria, to survive in nutrient-poor environments. The research demonstrates ultra-high-affinity transporters that capture carbon sources, influencing global biogeochemical cycles and ecosystem management.
Researchers found that ponds, lakes, rivers, and estuaries play a significant role in fixing nitrogen, supporting food webs and ecosystem productivity. They estimated that these systems fix the equivalent of 15% of total nitrogen fixed on land and in the open ocean, despite covering less than 10% of global surface area.
Researchers have identified diatoms as the dominant microorganisms in a previously mysterious area of the Southern Ocean. The study's findings suggest that diatoms are responsible for the high levels of reflectance observed in satellite images, providing new insights into carbon cycling and ocean biology.
A groundbreaking study reveals that small zooplankton like copepods and krill enhance carbon sequestration through seasonal migrations. These tiny creatures store around 65 million tonnes of carbon annually in the deep ocean.
Researchers have mapped Colombia's eastern lowlands to identify areas of peatlands, a crucial carbon storage system that can help reduce the country's emissions. The study found an estimated 7,370-36,200 square kilometers of peatlands, with potential to store more carbon than all the world's trees.
Researchers from the University of Oxford challenge the long-held assumption that water temperature determines the efficiency of ocean carbon capture. The study highlights the need for standardized data collection methods and improved monitoring in polar regions to better understand this critical process.
A new study found that nitrogen interventions can significantly lower air pollution and ecosystems damage, preventing premature deaths and crop losses. By 2050, high-ambition measures could cut ammonia and nitrogen oxides emissions by 40% and 52%, respectively.
Researchers found that tidal wetlands are not always less hospitable to methane-producing microbes as sea levels rise, with some sites emitting high levels of methane despite moderate saltwater influx. The study's results suggest complex factors governing methane emissions in natural landscapes, complicating predictions and models.
A recent study found that climate warming is altering carbon flow and food web dynamics in Arctic tundra and boreal forest ecosystems, with fungi replacing plants as the main energy source for animals. This shift has significant implications for ecosystem function and animal responses to climate change.
Researchers discovered bacteria can produce methane in oxygen-saturated surface waters, using methylphosphonate as a phosphorus source. This process has significant effects on atmospheric greenhouse gases and the carbon cycle of nutrient-poor ocean regions.
Researchers analyzed DNA sequenced datasets of microbes collected from salt marsh sites to study the relationship between cordgrasses and sulfur-cycling microbes. They found diverse microbial communities with varying combinations of genes for sulfate reduction and sulfur oxidation, allowing them to thrive in salt marsh sediments.
Researchers from Macquarie University have found that the Earth's gradual cooling led to a flip in the deep cycling of carbon and chlorine between the surface and interior. Most carbon accumulates into solid carbonate sediments, while chlorine typically returns to the surface as volcanic gases.
A recent study found that warming in Northern ecosystems leads to a massive loss of carbon in the soil, with up to 40% released into the atmosphere within years after warming. The research team also discovered that plant productivity becomes nitrogen limited under warming conditions, reducing the ecosystem's ability to store carbon.
A University of Rhode Island professor's study has developed a macromolecular model of phytoplankton, which could have significant implications for climate research. The model predicts the variation in C:N:P ratios throughout the ocean, providing new insights into how phytoplankton respond to changing environmental conditions.
A new study by Yale University researchers reveals that rivers are the main source of mercury in coastal areas, rather than atmospheric deposition. The Amazon River, Ganges, and Yangtze are among the top contributors, with levels highest in August and September.
The study found that human activities release significant amounts of vanadium into the environment, primarily through fossil fuel extraction and combustion. The annual global flux of vanadium is dominated by anthropogenic processes, with emissions to the atmosphere estimated to exceed natural emissions by up to 1.7.
Scientists have identified 'nugget-producing' bacteria that can dissolve and re-concentrate gold in just years to decades. This breakthrough could lead to more efficient gold extraction from ore and recycled materials, as well as aid in mineral exploration for new deposits.
Two Rutgers professors, Hugo Dooner and Paul Falkowski, have been elected to the National Academy of Sciences for their pioneering work in plant genetics and biological oceanography. Their research has significantly advanced our understanding of genome adaptability and the evolution of biogeochemical cycles.