Articles tagged with Deserts
A study published in Journal of Applied Ecology found that juvenile desert tortoises released into habitat with vegetation, rocks, and animal burrows had lower mortality rates. The researchers also discovered that tortoises on rocky ground were less likely to disperse away from their release site.
Researchers built a stream table experiment to test a theory about the erosion of the Tarim Basin's flat surfaces. They found that channel switching played a crucial role in beveling these areas due to rapid changes in sediment flux and water flow. The study provides insights into the geological history of the region.
Researchers found that Namibian desert elephants share the same DNA as African savanna elephants due to their high learning capacity and long-distance migrations. They possess unique survival skills, including sand-wetting and water conservation techniques.
An international team of astronomers has found a huge region around the centre of the Milky Way devoid of young stars, indicating a lack of star formation. This 'Cepheid desert' stretches for thousands of light years and challenges our understanding of the Galaxy's formation and evolution.
Climate effects of major eruptions deliver 'just right' conditions for vulnerable saguaro seedlings. A study by biogeographer Taly Drezner found that distant volcanic paroxysms fostered population growth in the Sonoran Desert.
Researchers discovered that reversing desert ants use an odometer-like mechanism to track distance and orientation while moving in reverse. The ants increase ground contact by using leg combinations and swing faster to maintain stability.
The study reveals how Syntrichia caninervis moss collects and transports water using its specialized awn structures, allowing it to survive in extremely dry conditions. The findings also have potential applications in industry and public hygiene, such as reducing splash-back in urinals.
A pioneering study reveals how long-distance movements in ancient camel caravan routes shaped the species' genetic diversity. The research combined genetic information from 1,083 living dromedaries with ancient DNA sequences to create an historic genetic picture of the species.
A study of loess accumulation in the northeastern Iranian Golestan Province and south Tajikistan reveals widespread dust storms and a semi-arid climate during the early Pleistocene. The findings suggest that an arid environment developed in mid-latitude Asia, consistent with other regions experiencing aridification during this period.
Researchers found that desert mangroves in Mexico's Baja California store nearly 30% of the region's belowground carbon, exceeding estimates. The study highlights the importance of mangrove conservation and ecosystem services in mitigating climate change.
Research using portable wind tunnel technology found that sand dunes can generate dust through grain collisions and vegetation removal. Coppice dunes, vegetated dunes trapping sand and dust particles, emitted the most dust among all tested sources.
Researchers analyzed Instagram posts from over 3 million users in food deserts and non-food deserts, finding that foods high in fat, cholesterol, and sugars were more common in the former. Regional staples like steak and okra were also prevalent in their respective communities.
A new species of desert tortoise has been discovered in Mexico, exhibiting distinct characteristics from its two known sister species. The Gopherus evgoodei species occupies the smallest geographic range and has a unique orange cast to its dark brownish shell.
Researchers at Arizona State University found that desert microbes can significantly warm the surface by producing sunscreen-like compounds, increasing reflectivity and altering ecosystem services. This phenomenon, known as biological soil crusts or biocrusts, could have important implications for global heat budgets and climate models.
A recent study suggests that eliminating food deserts may not lead to improved dietary quality in the US. Instead, initiatives like education and changes to food assistance programs can have a greater impact on reducing disparities in diet quality. The authors argue that addressing these disparities is crucial for improving public health.
Tropical Cyclone Megh became the second cyclone to make landfall in Yemen in one week, with NASA's Terra satellite capturing its image. The storm had maximum sustained winds near 35 knots and was centered just 15 nautical miles northeast of Aden.
A study by RAND Corporation found that opening a full-service grocery store in a food desert improves residents' diet and perceived access to healthy foods, yet the changes are not related to the store's use. Despite this, researchers observed positive improvements in multiple components of residents' diet.
A new study by Johns Hopkins Bloomberg School of Public Health found that federal policy changes led to an increase in healthy food availability at smaller urban corner stores in Baltimore. The researchers found that stores in neighborhoods with a majority of black residents showed the greatest improvement, suggesting that boosting hea...
Researchers found that wind blew dust from the Mu Us Desert into the Loess Plateau, creating a massive accumulation of consolidated dust. The plateau is not static but slowly moving downwind due to wind erosion, and linear ridges on its top are also sculpted by the wind.
A new MIT study finds that large seasonal changes in desert dust can dramatically affect surface phytoplankton, which rely on iron as a main nutrient for growth. The team determined that iron has a very short residence time in ocean waters, lasting only six months before sinking into the deep ocean.
Soldiers who served in Iraq and Afghanistan returned home with a higher risk of skin cancer, largely due to inadequate sun protection and lengthy daily sunlight exposure. The study found that only 13% of veterans routinely used sunscreen and 63% experienced at least one sunburn during deployment.
A new study suggests that the world's deserts may be storing significant amounts of climate-changing carbon dioxide, with estimates suggesting up to 20 billion metric tons stored in underground aquifers. This discovery could improve models used to predict future climate change and enhance calculations of the Earth's carbon budget.
Researchers at Ben-Gurion University have developed a new one-step graphene production process that is faster and potentially scalable. The lamp-ablation method produces high-yield few-layer graphene without toxic substances.
A new study reveals that ancient El Niño events controlled Baja bunny populations over the past 10,000 years. The research analyzed 3,463 bunny bones and found a strong correlation between El Niño frequency and rabbit abundance.
Researchers found that using a shopping list was associated with improved dietary quality and lower weight among low-income participants living in food deserts. The study suggests that this simple tool can be an effective way to promote healthy eating habits and reduce health risks.
Researchers from Spain and Portugal analyzed desert aerosols' radiative effect on the Earth's surface, finding that Sahara Desert dust caused cooling in August 2012. The team also discovered that anthropogenic pollution exacerbated this effect, leading to greater radiative cooling in both Évora and Badajoz.
Scientists have developed a method to extract rubber from guayule, a desert shrub native to the southwestern US, which could bolster the world's supply of natural rubber. The discovery may help reduce reliance on Southeast Asian plantations and diversify the global market.
Scientists at OIST Graduate University have identified a pattern in desert fairy circles that closely resembles the distribution of skin cells. This similarity spans vastly different scales, from microscopic cells to large-scale desert landscapes. The findings suggest that patterns may exist across disparate systems, enabling new appro...
A research team at James Cook University discovered how geckos manage to stay clean in dusty environments by using tiny hair-like spines that trap water droplets and release energy. This process has important implications for human applications, including the development of marine-based electronics and superhydrophobic clothing.
New satellite-based estimate reveals phosphorus transport from Saharan Desert to Amazon rainforest over multiple years. Researchers also investigate human and robotic missions to the Moon, potentially uncovering solar system origins.
Research suggests that termite mounds can slow the spread of deserts into drylands by providing a moist refuge for vegetation. The study's findings imply that these ecosystems are more resistant to desertification than previously thought, and that climate models should better account for organisms like termites.
Researchers found that termite mounds create refugia for vegetation on drylands, allowing them to thrive in areas with significantly less rain. This discovery could inspire new approaches to understanding the effects of climate change on ecosystems.
Researchers have gathered rare photographs of the critically endangered Saharan cheetah, shedding light on its elusive behavior and habitat requirements. The study's findings suggest that these large cats are more nocturnal, wide-ranging, and occur at lower densities than other cheetahs in Africa.
New research highlights the growing threat of smoldering peat fires, which can produce large amounts of carbon and worsen air quality. As temperatures rise, peat-rich regions worldwide become increasingly susceptible to drying and burning.
A recent study published in Geology reveals that harmonic tremor occurs within mountain glaciers and that individual icequakes can exhibit harmonic properties. This discovery suggests a complex network of fluid-induced fracture processes at the glacier base, which can lead to damaging floods in valleys below the glacier.
Desert streams have surprisingly simple topography despite being shaped by flash flooding, according to researchers from UCSB's Earth Research Institute. The stream's form is maintained by complex interactions among rainstorms, sediment flows, and sediment grains present on the riverbed.
A recent study has confirmed the presence of the Gulf Sand gecko in inland Oman, bridging a previously unknown distribution gap. The discovery was made by an international team of herpetologists using genetic data and habitat analysis.
A novel, efficient fog collector inspired by shorebirds' beaks has been developed, promising a sustainable solution for communities in arid regions. The device collects water from fog using a simple, rectangular design that mimics the shorebird's feeding mechanism.
Researchers found desert long-eared bats changed their diet from mostly scorpions on the ground to catching flying insects when prey was scarce. The change involved altered call and flight behavior, indicating potential flexibility in echolocation.
Rising geothermal water temperatures threaten the Devils Hole pupfish population, with a shortened recruitment period and reduced food availability. Climate change could lead to further decline of this rare species, which has numbered as few as 35 individuals.
The H.N. and Frances C. Berger Foundation is funding a mission-based scholarship program at UCR School of Medicine to help students alleviate medical school costs. The program aims to increase trained physicians in the Coachella Valley, addressing severe shortages.
Researchers found that bacteria in the gut, rather than liver enzymes, are crucial for allowing herbivores to feed on toxic plants. Fecal transplants with microbes from creosote-eaters enabled woodrats to eat toxic creosote bushes, confirming their importance in adapting to new diets.
Researchers at Ben-Gurion University found that scorpions build sophisticated burrows with warm platforms to increase body temperature before hunting. This design provides a refuge from the heat and demonstrates the animals' adaptation to environmental conditions.
Researchers discovered scorpion burrows have a warm platform to regulate body temperature before hunting, and a cool chamber to rest during the day. The design is common among all studied species, suggesting it evolved by natural selection to meet physiological needs.
Scientists from the California Academy of Sciences have discovered a new species of round-eared sengi in southwestern Africa, showcasing the critical role of scientific collections in biodiversity studies. The Etendeka round-eared sengi is the smallest known member of the order Macroscelidea.
Researchers recommend several new 'Fuji' strains for growers, citing improved yield, harvest time quality, and attractive color. The top performer was the 'September Wonder' strain, which showed excellent color, storability, and shape.
A report by UC Riverside ecologists reveals the proposed 'Cabo Dorado' development project in Mexico is situated in a high-conservation-value area, mirroring the importance of tropical waters. The project threatens to make extinct regionally endemic plant species and vegetation if it proceeds as planned.
Researchers developed a novel tree-planting technique to combat desertification by protecting seedlings from high temperatures. The technique involves using tubes to reduce soil temperature and increase survival rates of desert plants like Haloxylon ammodendron.
Researchers investigate why only 14 percent of woodrat hybrids have genetic signatures from both desert and Bryant's woodrats. Habitat differences and mating conflicts are found to be key factors limiting hybridization in closely-related species.
A study on southern African social spiders found that body size affects task assignment, with smaller spiders involved in web building and maintenance. The research also showed that colony 'personality' varies depending on individual spider traits, leading to cooperative breeding societies.
Genetic analysis of fossilized feces on Tiburón Island in Mexico suggests the island was once home to a native bighorn sheep population. The discovery raises questions about the species' extinction and potential rewilding efforts.
Researchers have identified two new species of desert poppies in California and Arizona, challenging the notion that deserts are devoid of vibrant flowers. The newly described plants belong to the Eschscholzia genus and possess unique characteristics, including vibrant yellow-colored inflorescences.
A total of 39 new species of endemic cockroaches have been discovered in the southwestern United States and Mexico. The new species, all belonging to the genus Arenivaga, were described by a PhD candidate at the University of New Mexico after a four-year study.
Researchers found that desert winter annuals outperform each other based on their water use efficiency and growth rate. In wet environments, plants with higher water-use efficiency thrive, while those with faster growth rates dominate in dry years.
A study by the Wildlife Conservation Society and Zoological Society of London reveals that the Sahara has suffered a catastrophic collapse of its wildlife populations. Over 14 desert species have declined, with many becoming regionally extinct or confined to small areas of their historical range.
Researchers sequenced the whole genome of desert poplar, revealing genetic mechanisms underlying its salt stress tolerance. The study provides new insights for breeding salt-tolerant cultivated poplars.
A new study classifies urban residential desert landscapes into nine common types, providing recommendations for planning and integrating lower water-use plants. The research also reveals differences in front and backyard environments, with low-maintenance landscapes prevalent in front yards.
Residents in a low-income urban neighborhood on Indy's east side have higher rates of diabetes, hypertension, and heart disease compared to other areas. The study suggests that limited access to healthy food contributes to these health disparities.
New research published in Quaternary Science Reviews finds that large rivers, such as the Yellow River, transport sediment from northern Tibet to deserts like the Mu Us desert. This study provides evidence of a previously debated topic, shedding light on climate change and ocean productivity
Four new species of 'legless lizards' have been discovered in California, including the silver-bellied A. alexanderae and purple-bellied A. grinnelli, with the first species added to the state's list from one to five. The discoveries highlight the importance of preserving biodiversity and the need for further surveys.