Articles tagged with Deserts
A 40-year greening project in China's Taklamakan Desert has successfully reduced atmospheric carbon dioxide levels and increased solar-induced fluorescence, indicating a measurable carbon sink. The project demonstrates the potential of afforestation to mitigate climate change, despite being only a small dent in global emissions.
The Sahara Desert is expected to see a significant increase in rainfall by the second half of the 21st century, with some regions experiencing up to 25% more precipitation. Researchers warn that this change will have far-reaching consequences for billions of people in Africa and beyond.
Research finds fish diversity declining in arid regions of US and Australia due to reduced water availability. Climate change is also affecting these ecosystems, but the study's findings suggest multiple stressors are at play.
Saharan mustard is overwhelming native plants' seed bank, reducing biodiversity and weakening ecosystems. The invasive species can crowd out native species, altering ecosystem function.
Researchers found evidence of recurring humid phases in the region over the past 8 million years, allowing for animal and hominin migrations. These wet conditions supported diverse species such as crocodiles and hippopotamids, facilitating biogeographic exchanges between Africa and Eurasia.
A new study reveals that the Saharo-Arabian Desert experienced recurrent humid intervals over the past eight million years, supporting migrations of water-dependent animals, including early ancestors. These wetter periods likely sustained monsoonal precipitation from the South, which gradually weakened over millions of years.
A recent study by an international team reveals that the Arabian Peninsula's desert was once home to a vast lake and river system, which fostered grasslands and savannahs, enabling human migration. The findings highlight the impact of climate cycles on landscapes and human societies.
Research reveals Atlantic Ocean storms are primary drivers of Sahara lake filling, contradicting previous theories. Heavy precipitation events triggered by extreme rainstorms reshape water availability in the desert, with implications for ecosystems and human settlements.
Researchers have presented a unique time-dependent record of drainage divide migration rates, showing that episodes of rapid shift coincide with past climate changes in the Negev over the last 230,000 years. This discovery accelerates our understanding of how climate affects the Earth's surface.
Researchers from the University of Oxford discovered that rainfall in the Sahara Desert increased between 8,700 and 4,300 years ago, coinciding with a rise in Neolithic archaeological sites. This finding highlights the importance of a favourable climate on early pastoralist societies, which relied on rainfall for their livestock.
Researchers found that fog water can be harvested in the Atacama Desert to ease water scarcity affecting vulnerable populations. The collected water can be used for drinking, irrigation, and local food production, with potential yields of up to 300,000 liters per week.
A nearly complete skull of the ancient apex carnivore Bastetodon has been discovered in the Egyptian desert, revealing a new species of hyaenodonta. The discovery sheds light on the evolution of hyaenodonts and their global distribution, with findings suggesting they spread from Africa to Asia, Europe, India, and North America.
A Mississippi State University scientist has discovered 16 new species of grasshoppers living in the thorny scrubs of U.S. and Mexican deserts, showcasing the thriving biodiversity in arid ecosystems. The newly uncovered species are native to the southern U.S. and Mexican deserts and were described in a recent scientific journal article.
Homo erectus adapted to survive in desert-like environments by returning to specific rivers and ponds for fresh water and developing specialised tools. The species' ability to adapt may have led to its expansion of geographic range, contradicting previous hypotheses that only Homo sapiens could thrive in extreme ecosystems.
A team from the University of Cambridge has developed a model to predict desert locust swarms, enabling national agencies to respond quickly. The model uses weather forecast data and computational models to forecast locust swarm movements both short and long-term.
A team of researchers has developed Janus crystals that capture humidity from the air with high efficiency, enabling a spontaneous and energy-free process for collecting potable water. The discovery could provide an endless source of clean water, addressing global water scarcity issues.
A team of researchers has discovered diverse microbial communities in the Atacama Desert, the driest place on Earth. They developed a new method to separate extracellular and intracellular genetic material, allowing for better insights into microbial life in low-biomass environments.
A study published in eLife reveals that larger arthropods like woodlice and beetles play a crucial role in leaf litter decomposition across diverse habitats and seasons. Decomposition rates are influenced by climate, leaf quality, and decomposer abundance, with macrofauna dominating decomposition in hot, dry regions.
Researchers are working on a new method for preserving microbial samples using microfluidics, biomaterials, and protein engineering. The goal is to improve biosurveillance and protect soldiers and civilians from infectious diseases.
A new study found that soil erosion significantly contributed to devastating desert floods in Libya, claiming over 11,300 lives. The research highlights the urgent need for advanced earth observations programs to monitor arid areas due to climate change.
Researchers at Tel Aviv University used modern technologies to challenge the long-held myth that the Roman siege of Masada lasted three years. The study found that the siege actually lasted no more than a few weeks, using precise measurements and 3D digital modeling to calculate the time it took to build the siege system.
Researchers developed a system that passively alternates between capturing and generating water, eliminating manual labor requirements. The system uses mass transport bridges to optimize efficiency and effectiveness, producing 2-3 liters of water per square meter daily.
A study by Stanford University researchers reveals a previously unknown relationship between Sahara dust plumes and hurricane rainfall. Thicker dust plumes can lead to heavier rainfall, while thinner ones may suppress hurricane formation over the ocean.
A study published in Frontiers in Fungal Biology reveals that microcolonial fungi and lichens on petroglyphs in the Negev desert can cause gradual erosion and damage. The researchers identified multiple species of these fungi and lichens, which are known to thrive in hot and cold deserts.
A new study reveals that a type of desert moss called Syntrichia caninervis has the potential to grow on Mars due to its ability to tolerate extreme temperatures, radiation, and dehydration. The researchers tested the moss's resilience in various conditions and found it to be one of the most radiation-tolerant organisms known.
New research found that non-native burros are altering plant growth, reducing ground cover and foliage density, and negatively impacting native wildlife species in the Sonoran Desert.
Scientists at TUM develop advanced early detection method to predict abrupt shifts in natural systems. The new approach enhances ability to monitor and respond to potential tipping points, potentially anticipating large-scale climate events.
The study reveals that the pyramids were concentrated in a narrow desert strip due to a former river branch, known as Ahramat, which is now buried beneath farmland and desert. The findings suggest that the river branch was used for transporting construction materials and could help prioritize archaeological excavations along its banks.
Desert isopods rigorously regulate their intake of macronutrients and calcium, preferring biological soil crust over plant litter. The research highlights the crucial role of ingested microorganisms in facilitating digestion and growth.
Research finds that the Arctic warming is causing a decline in dust levels across India, the Persian Gulf Coast, and the Middle East. The study suggests that addressing dust reduction should be done in tandem with efforts to curb emissions and mitigate climate change.
Viable microbes detected down to depths of 4.20 meters, expanding understanding of desert biodiversity and search for life on other planets.
Researchers found microbial communities in Atacama Desert soil, dominated by Actinobacteria and possibly relying on gypsum for water. The discovery hints at a previously unknown deep biosphere under hyper-arid desert soils, with potential implications for the search for extraterrestrial life.
Oasis growth and loss have been tracked globally over 25 years, with significant increases in Asia due to intentional expansion. However, desertification has led to a substantial loss of approximately 134,000 square kilometers of oasis land worldwide.
The Aral Sea's disappearance has led to a significant increase in dust emissions, affecting air quality in Tajikistan and Turkmenistan. The study found that the dust can accelerate water crisis and exacerbate melting of glaciers.
Desert soil bacteria can survive prolonged droughts by entering a state of dormancy, but quickly reactivate in response to rare rainfall events. This allows them to generate energy and repair their genomes before returning to dormancy.
A recent study reveals that humans inhabited a lava tube in northern Saudi Arabia for thousands of years, with evidence of repeated occupation and a transition to oasis agriculture. The site provides valuable insights into the history of human settlement in the region.
A recent study published in Phytobiomes Journal found that non-native crop viruses are infecting and harming wild desert plants. Infection rates with the virus CABYV reached as high as 88% in some populations, causing visible impacts on plant growth and root health.
The Telescope Array has detected the second-highest energy cosmic ray ever observed, with an energy equivalent to dropping a brick on your toe from waist height. The Amaterasu particle deepens the mystery of ultra-high-energy cosmic rays, which may follow particle physics unknown to science.
A recent KAUST study used satellite data to investigate the effects of managed vegetation on surface temperature in arid regions. The results showed that vegetation can reduce daytime temperatures by up to 4 degrees Celsius compared to bare soil, providing an extra cooling effect on hotter days.
Researchers have discovered a unique mechanism by which the desert shrub Tamarix aphylla captures moisture from the air, allowing it to thrive in arid environments. The plant excretes salts to extract and condense water onto its leaves, which can then be absorbed.
A recent study led by ecologists from the Hebrew University of Jerusalem investigated how desert isopods select burrow sites amidst looming predators. Larger female isopods displayed a preference for safer burrows, emphasizing the importance of size and safety in their breeding site choices.
Pre-contact agave species cultivated by early cultures like the Hohokam people continue to persist in Arizona's landscape. These domesticated agaves are distinct from their wild counterparts and offer a rare opportunity to study plant species unchanged since prehistory.
A study by CSIC reveals fairy circles are more common than thought, linked to low nitrogen content and rainfall below 200 mm/year. The formations show increased stability in productivity compared to other ecosystems, providing insights into ecosystem resilience and potential indicators of degradation with climate change.
Researchers suggest transforming arid ecosystems into efficient carbon-capture systems by engineering ideal combinations of plants, soil microbes, and soil type. This approach could result in significant increases in plant and soil carbon sequestration within less than ten years.
A study of 288 skeletons and rock art reveals a surprising consistency in rates of violence over time, with an increase in lethal violence during the Formative Period. The absence of centralized political systems may have contributed to these violent tensions.
Climate scientists simulated North African Humid Periods every 21,000 years driven by Earth's orbital precession. The study revealed that these humid events intensified the West African Monsoon system, resulting in the spread of savannah-type vegetation across the desert.
Researchers in Namibia analyzed prehistoric rock art engravings of animal tracks and human footprints, revealing surprising details about the diversity of species represented. The findings suggest culturally determined preferences in the depiction of animals, with a preference for adult male footprints.
Scientists have found that dust storms in Alaska can cause ice formation in clouds, which could add to or help cool the planet. The particles from these storms contain more biological material than those from desert environments, making them effective at forming ice crystals.
A recent study by Dr. Monica Mowery at Ben-Gurion University of the Negev found that urban habitats provide a safe haven for invasive brown widow spiders, protecting them from parasitism and predation. This allows the species to thrive in high densities, contrary to what is observed in natural desert habitats.
Researchers at KAUST have isolated a desert microbial strain that enhances drought resilience in Arabidopsis and alfalfa, promoting water use efficiency without affecting crop yields. The microbes modify epigenetic status of drought stress genes and actively change plant root architecture.
Researchers confirm termites as cause of Namib Desert fairy circles, refuting the self-regulation hypothesis. The study found that sand termites eliminate plants in sandy soils, enabling long-lasting water storage after infrequent rainfall.
Researchers at MIT have developed a superabsorbent material that can soak up record amounts of moisture from the air, even in dry conditions. The material is made by infusing hydrogel with lithium chloride and has shown to absorb and retain unprecedented amounts of water vapor.
A new study found that the 2022 snow season had the highest snowpack dust concentrations of any year since observations began in 2009, accelerating snowmelt by 17 days. The dry lakebed of the Great Salt Lake contributed the highest dust emissions per surface area, threatening Utah's water supply.
A research team studied the source of hazardous March and April 2023 dust storms in China, finding that Mongolia is the main dust source affecting northern China's weather. The team used advanced models and machine learning techniques to forecast dust events, providing a reference for addressing global dust storm hazards.
Researchers have identified the oldest known true-to-scale construction plans in human history, dating back 8,000 to 9,000 years. The ancient engravings depict so-called desert dragons, kilometre-long megastructures used for trapping animals.
A new study found that hundreds of U.S. counties lack access to safe and accessible play areas for children. The researchers used machine learning technologies to determine the county-level disparities in physical activity environments.
Researchers have uncovered the oldest known architectural plans of human-made mega structures, dated to between 7,000 and 8,000 years ago. These engravings depict desert kites used to trap wild animals, showcasing a milestone in intelligent behavior and spatial representation.
ASU researchers have developed a method to regenerate biocrusts on arid lands by harnessing the power of solar farms. The approach, dubbed 'crustivoltaics,' has shown promising results in doubling biocrust biomass and tripling biocrust cover under photovoltaic panels.
Researchers discovered a hydrogel material that maintains its ability to absorb moisture despite rising temperatures, contradicting intuition. The material, polyethylene glycol (PEG), doubles its water absorption between 25-50 degrees Celsius, making it suitable for passive cooling and water harvesting applications.
Scientists have discovered how sandgrouse hold water in their feathers, enabling males to fly long distances and retain enough water for chicks. The unique feather structure uses capillary action to absorb and retain water.