Pseudobulbs: sink for exogenous nitrogen in epiphytic orchids
Pseudobulbs, which are somewhat enlarged or thickened succulent stems, are common in epiphytic orchids. Nitrogen can be transported from old to young pseudobulbs and between leaves and pseudobulbs......»»
Study uncovers the role of soil microbes in forest ecosystems
Assessing the function of forest ecosystems requires a deep understanding of the mechanisms of soil nitrogen mineralization. A study conducted by a team of researchers has shed light on how soil N-cycling genes drive soil nitrogen mineralization duri.....»»
Scientists discover first nitrogen-fixing organelle
Modern biology textbooks assert that only bacteria can take nitrogen from the atmosphere and convert it into a form that is usable for life. Plants that fix nitrogen, such as legumes, do so by harboring symbiotic bacteria in root nodules. But a recen.....»»
Researchers find a new organelle evolving
A "nitroplast" converts nitrogen from the air to a chemically useful form. Enlarge / A photo of Braarudosphaera bigelowii with the nitroplast indicated by an arrowhead. (credit: Tyler Coale) The complex cells that under.....»»
Mexico City’s Metro System Is Sinking Fast. Yours Could Be Next
Subsidence is causing parts of Mexico City to sink, and it’s happening at an uneven rate. That’s bad news for its sprawling public transportation system......»»
Measuring the atmospheres of other worlds to see if there are enough nutrients for life
Life on Earth depends on six critical elements: carbon, hydrogen, nitrogen, oxygen, phosphorous, and sulfur. These elements are referred to as CHNOPS, and along with several trace micronutrients and liquid water, they're what life needs......»»
EJBCA: Open-source public key infrastructure (PKI), certificate authority (CA)
EJBCA is open-source PKI and CA software. It can handle almost anything, and someone once called it the kitchen sink of PKI. With its extensive history as one of the longest-standing CA software projects, EJBCA offers proven robustness, reliability,.....»»
Africa"s carbon sink capacity is shrinking
The population of Africa, the second-largest continent in the world, currently sits at about 1.4 billion, but is set to exceed 2 billion by 2040. This means greater swaths of land than ever before are being used for agriculture, and livestock numbers.....»»
A new estimate of US soil organic carbon to improve Earth system models
Soil contains about twice as much carbon as the atmosphere and plants combined. It is a major carbon sink, capable of absorbing more carbon dioxide from the atmosphere than it releases. Management of soil carbon is key in efforts to mitigate climate.....»»
Engineers "symphonize" cleaner ammonia production
Among the many chemicals we use every day, ammonia is one of the worst for the atmosphere. The nitrogen-based chemical used in fertilizer, dyes, explosives and many other products ranks second only to cement in terms of carbon emissions, due to the h.....»»
Researchers show depth-dependent responses of soil organic carbon under nitrogen deposition
In a study published in Global Change Biology, scientists from the Institute of Earth Environment and the South China Botanical Garden of the Chinese Academy of Sciences have shed light on understanding the effects of nitrogen addition on soil organi.....»»
New model integrates soil microbes, large perennial grasses
Of all the carbon stored in ecosystems around the world, about half can be found in soils. Depending on climate, vegetation, and management, soils can be either a carbon source or a sink......»»
Scientists develop catalyst designed to make ammonia production more sustainable
Ammonia is one of the most widely produced chemicals in the world, and is used in a great many manufacturing and service industries. The conventional production technology is the Haber-Bosch process, which combines nitrogen gas (N2) and hydrogen gas.....»»
Satellite data unlocks drought impact on southwest China"s carbon cycle
Over the past four decades, Southwest China has been a major carbon sink, significantly mitigating anthropogenic CO2 emissions. However, recent severe droughts, especially from 2009 to 2013 and in 2022, have drastically reduced its carbon absorption.....»»
Saturn"s moon is a testing ground to gain a better understanding of the methane molecule
Titan is the second-largest moon in the solar system and the only one with a dense atmosphere. At the top of this atmosphere, rich in nitrogen and methane, the sun's radiation produces a great diversity of organic molecules, some of which we also fin.....»»
Vehicle subscriptions work to prove worth in a sink or swim market
The few startups and programs still in operation are trying to find the right pricing and logistical models to survive......»»
How nitrogen has been underestimated in lake ecosystems
An ecological imbalance in a lake can usually be attributed to increased nutrient inputs. This results in increased phytoplankton growth, oxygen deficiency, toxic cyanobacterial blooms and fish deaths. Until now, controls in lake management have focu.....»»
Research confirms exogenous methyl jasmonate can enhance tomato resistance
Tomato (Solanum lycopersicum L.) is the most widely cultivated and consumed horticultural crop. At present, saline-alkali is an important abiotic stress source that affects tomato production. Exogenous methyl jasmonate (MeJA) can enhance the resistan.....»»
Catalyst combines vanadium-based components and nitrogen-doped biomass carbon for pollutant removal
Polychlorinated dibenzo-p-dioxins and dibenzofurans are dangerous pollutants due to their carcinogenicity and persistence in the environment. Traditional catalytic oxidation methods for their removal face challenges like high cost and inefficiency at.....»»
Stronger storms free more nutrients from mud flats, finds researcher
If storms become stronger in the future due to climate change, more nitrogen may be released from the bottom of coastal seas. This is shown by the research of marine biogeochemist Dunia Rios-Yunes at NIOZ in Yerseke. Rios-Yunes will defend her Ph.D......»»
Study shows orchid family emerged in northern hemisphere and thrived alongside dinosaurs for 20 million years
In a new study published in New Phytologist, scientists at the Royal Botanic Gardens, Kew, along with partners in Latin America, Asia and Australia, present an updated family tree of orchids, tracing their origins to the northern hemisphere some 85 m.....»»