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#soils

1 post1 participant0 posts today
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Umweltbundesamt

#PFAS have been used for decades and are still being emitted into the environment. These so-called ‘forever chemicals’ are found ubiquitously– with #soils being a major sink and source.
Register for “PFAS in soil – forever pollution, forever concern?” on 25-26 March 2025 in Berlin or online.
umweltbundesamt.de/conference-

UmweltbundesamtConference PFAS in soil - forever pollution, forever concern? Start
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💧🌏 Greg Cocks

Development And Application Of A GIS-Based Suitability Index Model To Evaluate The Potential For Agromining Ni-Co Laterite In The Josephine Peridotite, California And Oregon, USA
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agu.confex.com/agu/agu24/meeti <-- shared 2024 AGU Fall Meeting poster
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#GIS #spatial #mapping #suitabilityindex #agromining #phytomining #laterites #JosephinePeridotite, #California #Oregon #nickel #mining #cobalt #phytoextraction #agriculture #soils #geology #lowimpact #spatialanalysis #model #modeling
@USGS

photo - Josephine Peridotite exposure, CA
shared 2024 AGU Fall Meeting poster - Development And Application Of A GIS-Based Suitability Index Model To Evaluate The Potential For Agromining Ni-Co Laterite In The Josephine Peridotite, California And Oregon, USA
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Vladimir Okhotnikov

When Reality Is Being Depleted: Metaverses as Salvation?
Imagine an area larger than Antarctica. No, it’s not a new country or a giant city. It’s 15 million square kilometers of depleted soils spread across the entire Earth. These vital resources are degrading at a rate of about 1 million square kilometers per year — that is, we are literally losing the fertility of the planet at an alarming rate.
tumblr.com/vladimirokhotnikov/

#Ecology#Soils#Metaverse
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💧🌏 Greg Cocks

Linking Inca Terraces With Landslide Occurrence In The Ticsani Valley, Peru
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doi.org/10.3390/geosciences141 <-- shared paper
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[takes me back to my engineering geology days in the Southern Hemisphere, including my thesis – with a healthy dose of spatial analysis and modeling – and all with a specific use; what is not to like?]
#GIS #spatial #mapping #landslides #massmovement #Inca #Andes #irrigation #terraces #Peru #SouthAmerica #confusionmatrix #logisticregression #geohazards #spatialanalysis #spatiotemporal #terracing #water #hydrology #surfaceflow #geomechanical #geotechnical #Ticsani #algorithm #processes #geostatistics #river #slope #agriculture #farming #soils #geology #risk #hazard #publicsafety #fem #model #modeling #rainfall #precipitation #permeability #groundwater #subsurfaceflow #instability #fluvial #erosion

photo - terraces in part of the Ticsani Valley, Peru
photos - (A) The main fluvial landforms in the AOI. The Carumas river can be seen here to be bounded by landslides affecting a fluvial terrace covered by agricultural terraces. (B) Landslides affecting a slope close to a community in the AOI. Note the construction of terraces on prior landslide deposits.
schematic / cross-section - Typical profile of terraces built in Southern Peru. Wall rocks are directly piled over an excavated trench in bedrock without mortar. An upward decreasing gradation is used to fill the internal portion of the wall in compacted layers. Fertile arable soil is placed in the top 30 cm.
imagery / map / schematic cross-section - (A) A 3D view of the San Cristobal landslide. (B) A 1:50,000 geological map of the landslide area, modified from [33]. Ki-mat = Matalaque Fm. P-Pi = Puno Fm. Q-pl = colluvial deposits, debris avalanche. Qp-vl-pi = pyroclastic deposits. Red line marks the topographic cross-section shown in A. (C) Cross-section of the San Cristobal landslide with estimated base groundwater conditions (blue) and materials boundaries (green) to be used for modeling and interpreted potential failure surfaces (dashed red).
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Mikko Tuomi

Globally, annual #emissions from managed organic soils accounts for up to 5% of all anthropogenic greenhouse gas (GHG) emissions.

Climate-wise management and restoration of degraded organic #soils could reduce GHG emissions quickly and at relatively low costs.

However, EU is not on track to deliver on its binding ambitions, indicating the need for more effective implementation measures also on organic soils.

#climate
frontiersin.org/journals/envir

FrontiersFrontiers | We need targeted policy interventions in the EU to save soil carbonGlobally, annual emissions from managed organic soils accounts for up to 5% of all anthropogenic greenhouse gas (GHG) emissions. Climate-wise management and ...
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Lukas VFN 🇪🇺

Saving #Wintergreen, A Confusing Wee Flower
plantlife.org.uk/saving-winter

"#wintergreens are partial #mycoheterotrophs, which means that they have an alternative to #photosynthesis for acquiring their energy to grow. They can parasitically take sugars and minerals from #fungus in woodland #soils. This ability is likely part of why they are so challenging to propagate in captivity. There have also been suggestions that the presence of specific #fungi is necessary for the tiny seeds to germinate."

Photo of a small plant with white flowers
Public
DoomsdaysCW

The system that moves #water around the #Earth is off balance for the first time in human history

The #WaterCycle refers to the complex system by which water moves around the Earth.

By Laura Paddison, CNN
Published Oct 17, 2024

"Humanity has thrown the global water cycle off balance 'for the first time in human history,' fueling a growing water disaster that will wreak havoc on economies, #FoodProduction and lives, according to a landmark new report.

"Decades of destructive #LandUse and #WaterMismanagement have collided with the human-caused #ClimateCrisis to put 'unprecedented stress' on the global water cycle, said the report published Wednesday by the Global Commission on the Economics of Water, a group of international leaders and experts.

"The water cycle refers to the complex system by which water moves around the Earth. Water evaporates from the ground — including from lakes, rivers and plants — and rises into the atmosphere, forming large rivers of water vapor able to travel long distances, before cooling, condensing and eventually falling back to the ground as rain or snow.

"Disruptions to the water cycle are already causing suffering. Nearly 3 billion people face #WaterScarcity. #Crops are shriveling and cities are sinking as the groundwater beneath them dries out.

"The consequences will be even more catastrophic without urgent action. The water crisis threatens more than 50% of global food production and risks shaving an average of 8% off countries’ GDPs by 2050, with much higher losses of up to 15% projected in low-income countries, the report found.

'“For the first time in human history, we are pushing the global water cycle out of balance,' said Johan Rockström, co-chair of the Global Commission on the Economics of Water and a report author. '#Precipitation, the source of all #freshwater, can no longer be relied upon.'

"The report differentiates between '#BlueWater,' the liquid water in #lakes, #rivers and #aquifers, and '#GreenWater,' the moisture stored in #soils and #plants.

"While the supply of green water has long been overlooked, it is just as important to the water cycle, the report says, as it returns to the atmosphere when plants release water vapor, generating about half of all rainfall over land.

"Disruptions to the water cycle are 'deeply intertwined' with climate change, the report found.

"A stable supply of green water is vital for supporting vegetation that can store planet-heating #carbon. But the damage humans inflict, including destroying #wetlands and tearing down #forests, is depleting these carbon sinks and accelerating #GlobalWarming. In turn, climate change-fueled heat is drying out landscapes, reducing moisture and increasing [#wildfire] risk.

"The crisis is made more urgent by the huge need for water. The report calculates that, on average, people need a minimum of about 4,000 liters (just over 1,000 gallons) a day to lead a 'dignified life,' far above the 50 to 100 liters the United Nations says is needed for basic needs, and more than most regions will be able to provide from local sources.

"Richard Allan, a climate science professor at Reading University, England, said the report 'paints a grim picture of human-caused disruption to the global water cycle, the most precious natural resource that ultimately sustains our livelihoods.'

"Human activities 'are altering the fabric of our land and the air above which is warming the climate, intensifying both wet and dry extremes, and sending wind and rainfall patterns out of kilter,' added Allan, who was not involved in the report.

"The crisis can only be addressed through better management of natural resources and massive cuts in planet-heating pollution, he told CNN.
"The report’s authors say world governments must recognize the water cycle as a '#CommonGood' and address it collectively. Countries are dependent on each other, not only through lakes and rivers that span borders, but also because of water in the atmosphere, which can travel huge distances — meaning decisions made in one country can disrupt rainfall in another.

"The report calls for a 'fundamental regearing of where water sits in economies,' including better pricing to discourage wastefulness and the tendency to plant water-thirsty crops and facilities, such as #DataCenters, in water-stressed regions."

Read more:
accuweather.com/en/climate/the

#WaterIsLife#ClimateCatastrophe#AI
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Lukas VFN 🇪🇺

Irish #peat soils are far more vast than previously known, suggests study phys.org/news/2024-07-irish-pe

An adaptive mapping framework for the management of peat soils: A new Irish #PeatSoils map sciencedirect.com/science/arti

New figures suggest peat soils cover 13% more area than previous peat #soil maps, which are useful in land use planning—with peat #soils critical in absorbing #GreenhouseGases.

Map of Ireland with blue and yellow dots covering the area of the Republic of Ireland
#Ireland#Conservation#ClimateChange
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Keith D Johnson

"A paper from Cornell by #climate scientists that showed that in 2023 the ability of plants and #soils to absorb #carbon basically dropped to almost nothing. The Tropics were so hot & so dry that they are net emitters & the northern latitudes capacity dropped by *50%*.
The implications are three fold.
1. IPCC models did not predict this until much, much later which means they are assuming that the soil and trees will be absorbing carbon that won't be absorbed. Yet again, the IPCC models are wildly understating the impacts of climate change. [Also, high temps cause a sharp reduction in photosynthesis, and can kill pollen.]
2. In 2022, the oceans absorbed MORE carbon than usual, which may (this is speculative) explain why they are warming so fast - & it is possibly because they also are hitting absorption limits.
3. Unless something changes there is no reason to believe we are not going to experience runaway global warming, & probably are already experiencing it."
arxiv.org/abs/2407.12447?

arXiv.orgLow latency carbon budget analysis reveals a large decline of the land carbon sink in 2023In 2023, the CO2 growth rate was 3.37 +/- 0.11 ppm at Mauna Loa, 86% above the previous year, and hitting a record high since observations began in 1958, while global fossil fuel CO2 emissions only increased by 0.6 +/- 0.5%. This implies an unprecedented weakening of land and ocean sinks, and raises the question of where and why this reduction happened. Here we show a global net land CO2 sink of 0.44 +/- 0.21 GtC yr-1, the weakest since 2003. We used dynamic global vegetation models, satellites fire emissions, an atmospheric inversion based on OCO-2 measurements, and emulators of ocean biogeochemical and data driven models to deliver a fast-track carbon budget in 2023. Those models ensured consistency with previous carbon budgets. Regional flux anomalies from 2015-2022 are consistent between top-down and bottom-up approaches, with the largest abnormal carbon loss in the Amazon during the drought in the second half of 2023 (0.31 +/- 0.19 GtC yr-1), extreme fire emissions of 0.58 +/- 0.10 GtC yr-1 in Canada and a loss in South-East Asia (0.13 +/- 0.12 GtC yr-1). Since 2015, land CO2 uptake north of 20 degree N declined by half to 1.13 +/- 0.24 GtC yr-1 in 2023. Meanwhile, the tropics recovered from the 2015-16 El Nino carbon loss, gained carbon during the La Nina years (2020-2023), then switched to a carbon loss during the 2023 El Nino (0.56 +/- 0.23 GtC yr-1). The ocean sink was stronger than normal in the equatorial eastern Pacific due to reduced upwelling from La Nina's retreat in early 2023 and the development of El Nino later. Land regions exposed to extreme heat in 2023 contributed a gross carbon loss of 1.73 GtC yr-1, indicating that record warming in 2023 had a strong negative impact on the capacity of terrestrial ecosystems to mitigate climate change.
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Ariadne

Some good #climate news! "Herd of 170 #bison could help store #CO2 equivalent of almost 2m cars, researchers say - Free-roaming animals reintroduced in Romania’s Țarcu mountains are stimulating plant growth and securing #carbon stored in the soil while grazing"
...
"The latest research, which has not been peer-reviewed, used a new model developed by scientists at the #Yale School of the #Environment and funded by the Global #Rewilding Alliance. It calculates the additional amount of atmospheric CO2 that #wildlife species help to capture and store in #soils through their interactions within #ecosystems. The European bison herd grazing in an area of nearly 50 sq km of grasslands within the wider Țarcu mountains, was found to potentially capture an additional 2m tonnes of carbon a year. That is nearly 9.8 times more than without the bison – although the report authors noted the 9.8 figure could be up to 55% higher or lower, given the uncertainty around the median estimate. This corresponds to the yearly CO2 emissions of 1.88m average US petrol cars."
...
"The report on Romania’s European bison is “the first of its kind”, said Sylvén, adding that the model provided “a very powerful tool at hand to give directions to wildlife reintroductions”.

Schmitz said the team had looked at nine species in detail, including #tropical #forest #elephants, musk oxen and sea #otters, and had begun to investigate others. He added: “Many of them show similar promise to these bison, often doubling an ecosystem’s capacity to draw down and store #carbon, and sometimes much more. This really is a policy option with massive potential.”

theguardian.com/environment/ar

The Guardian · Herd of 170 bison could help store CO2 equivalent of 43,000 cars, researchers sayBy Graeme Green
#ClimateChange#ClimateCrisis#ClimateEmergency
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Scientific Frontline

#Arsenic is a toxic metalloid of natural origin. Arsenic-contaminated #soils and #waters are found all over the world, especially in southeastern Asian countries like Bangladesh, Vietnam, and China. Also, Switzerland has a few natural hot spots where arsenic is found in above-average concentrations.
#Environmental #sflorg
sflorg.com/2024/04/en04022401.

www.sflorg.comCorn reduces arsenic toxicity in soilWhen crops grow in arsenic-contaminated soil, this toxic element accumulates in the food chain
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Lukas VFN 🇪🇺

Genes identified that allow bacteria to thrive despite toxic heavy metal in soil phys.org/news/2024-03-genes-ba

The evolutionary #genomics of adaptation to stress in wild #rhizobium #bacteria: Hanna Kehlet-Delgado et al. pnas.org/doi/10.1073/pnas.2311

"Some #soil bacteria can acquire sets of genes that enable them to pump the heavy metal #nickel out of their systems. This enables the bacteria to not only thrive in otherwise toxic #soils but help #plants grow there as well."

tiny plant growing in rocky soil
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