Articles tagged with Shrubs
A new study by Steve Franzel and colleagues found that only 40% of expert farmers are effective disseminators, highlighting the importance of selecting farmer trainers based on their teaching skills. The study, conducted in Kenya with 225,000 smallholder farmers, suggests that extension programs should prioritize trainer selection over...
A neuroeconomics study from McGill University shows that the brain employs two separate regions and processes in valuing 'stimuli' (goods) versus 'actions'. The findings, published in the Journal of Neuroscience, provide new insights into frontal lobe damage and its effects on decision making.
A study by MIT researchers found that bees and similar nectar feeders are most efficient when feeding on more sugary, or viscous, nectar, while suction feeders prefer less sugary nectar. This suggests a correlation between the morphology of flowers and their pollinators.
A team of researchers at UConn has developed a seedless variety of the invasive plant Euonymus alatus, known as 'burning bush', which retains its attractive foliage but eliminates its ability to spread. This breakthrough could help restore the plant's popularity in commercial markets and mitigate its environmental impact.
Researchers extracted the plant's physiologically active components and found that 200 and 400 mg/kg doses produced analgesia comparable to aspirin. The extract may be acting through both peripheral and central pain mechanisms.
A previously unknown fossil primate, Mescalerolemur horneri, has been discovered in West Texas, dating back to the Eocene Epoch. The species is closely related to Eurasian and African adapiforms, challenging current understanding of North American primates.
Fossil teeth analysis reveals different herbivore families responded differently to the emergence of C4 warm-season grasses in East Africa. The shift occurred at varying rates and times, with some animals adapting to their new diet before grasslands spread rapidly.
Scientists discovered that Rhizanthella gardneri, a critically endangered orchid, has the smallest plant chloroplast genome at 37 genes, making it essential for its parasitic lifestyle. The genome retains only four crucial proteins, allowing the orchid to survive without photosynthesis.
A new study by Nailya Ordabayeva and Pierre Chandon reveals that increasing equality decreases consumer envy, but also boosts status spending among bottom-tier consumers. In experiments, participants were more likely to spend money on purchases that would improve their social standing when the distribution was less equal.
A study found that invasive bush honeysuckle substantially increases the risk of human disease by providing a habitat for deer to congregate, allowing ticks to spread diseases. The research suggests that this effect may be seen with other invasive plants as well.
Scientists have successfully cultivated 'ōhelo berries in Hawaii, reducing environmental damage and increasing the fruit's availability for small farms and ornamental purposes. The new cultivar, Kilauea, exhibits improved plant hardiness and vigor, allowing for faster germination and flowering.
Researchers at Mount Sinai School of Medicine have discovered a new mechanism behind craniofrontonasal syndrome (CFNS) and cleft palate. A mutation in the ephrin-B1 gene causes cell proliferation anomalies, leading to facial malformations.
A new study in the journal Evolution found that island lizards' body shapes and sizes are shaped by competition for resources. As species numbers increased on each island, finer evolutionary changes occurred, leading to fewer distinct body types.
Researchers at Michigan State University have discovered a novel, high-quality oil produced by the burning bush enzyme, which boasts lower viscosity and calorie content. This unique oil could be used as a direct-use biofuel for diesel engines and as a reduced-calorie food oil substitute.
The Polygala balansae, a thorny bush up to 1.5m high, has only one population in Spain, found on 1,920m2 Mediterranean scrubland. It is threatened by habitat fragmentation, human settlement, and biological problems due to low reproductive individuals.
The U.S. Department of Agriculture has introduced two new compact oakleaf hydrangea cultivars, Ruby Slippers and Munchkin, suitable for small residential landscapes. These plants are the first compact forms of Hydrangea quercifolia to be released by USDA scientists.
Researchers have solved the puzzle of how the Falkland Islands wolf, an extinct species, got to the islands. DNA analysis reveals that the closest relative is a South American dog species called the maned wolf and the bush dog.
Researchers highlight the need to study the indirect effects of climate change on plants, animals, and humans in the Arctic. The authors emphasize the importance of understanding the ecology of Arctic winters, conservation of ecosystems, and the impact of extreme events.
A recent study by researchers found that certain tree and shrub species are more or less attractive to white-tailed deer, resulting in varying levels of damage. By identifying these preferences, growers can take steps to reduce economic losses, such as harvesting products in late fall and early winter.
A study published in Molecular Ecology found that woodrats have genetic detoxification genes that enable them to consume creosote bushes, which are coated with a toxic resin. The researchers also discovered that these animals adapt their diets in response to climate change, and the findings may provide insights into how humans can modi...
A new study suggests that grazing animals in the Arctic can reduce the expected expansion of shrub growth, which would otherwise help mitigate climate change by absorbing more carbon dioxide. The researchers found that muskoxen and caribou reduced shrub growth by 19-46% in plots with increased temperatures.
Researchers found that invasive plant species, such as Buddleia and Oregon grape, have an advantage over native ones due to genetic changes and the absence of natural herbivores. This can lead to a threat to ecological balance and displacement of native species.
A tiny beetle, the mesquite girdler, is speeding up desertification by regulating plant growth. The beetle's actions are depleting nutrients for other plant species, altering the Chihuahuan desert's ecosystem.
Researchers found that Bush supporters expressed less interest in viewing images, but this effect was reduced when they weren't first told about the policy. In contrast, non-Bush supporters showed more interest regardless of whether or not they were informed.
A new analysis by Oregon State University and U.S. Geological Survey suggests that dense conifer forests may be harming dozens of animal species dependent on shrubs, herbs, and broad-leaf trees. At least 78 vertebrate species have been documented to require non-coniferous vegetation, which is often scarce in managed forests.
An MIT team has solved the case of the throbbbing oil drop, explaining how evaporation-induced variations in surface tension cause a periodic expansion and contraction. The mechanism, which involves three interfaces between oil, water, and air, has implications for environmental engineering and could be applied to biological systems.
A study published in Aging Cell found that male mice fed a normal diet and NDGA showed significantly longer survival than control mice. However, no significant difference was observed in female mice. The researchers are now conducting further studies to confirm the results and determine the potential of NDGA as an anti-aging agent.
Researchers from Oregon State University found a high level of naturally-regenerating tree seedlings in burned forest lands. The density of surviving conifers was similar to that of traditional old-growth forests, with some plots already having larger trees considered 'free to grow' by forestry standards.
Researchers are using a robot named Eliza to provide specialist medical care to children in rural areas via video-link consultations with Brisbane specialists. The robot project aims to deliver high-quality clinical care and professional support to regional health staff.
The article examines how George W. Bush's response to 9/11 mirrored the diplomatic approach of President Woodrow Wilson during his era. The author, Lloyd E. Ambrosius, draws parallels between the two leaders' strategies, highlighting similarities in their use of international organizations and multilateral cooperation.
The US healthcare system faces significant challenges, with high costs and a growing number of uninsured individuals. Bush's proposed initiatives are unlikely to address these issues, as electronic records may not significantly reduce health costs and HSAs could exacerbate the problem.
A team at UC Irvine will receive a $1.5 million grant to develop computer-based simulations of pandemic flu and other infectious disease outbreaks. The research aims to improve understanding of how to prepare for and contain the spread of such diseases.
Researchers analyzed chemicals in elephant tail hair to determine their diet and movements, revealing the need for secure habitats to protect endangered species. The study aims to inform land use planning and minimize conflicts between humans and elephants.
Researchers have calculated the math behind nearly weightless water walkers' ability to scale water walls several times their height. Tiny obstacles, such as leaves on streams or stones on riverbanks, pose an invisible challenge to these creatures.
Insects use unique postures and forces to propel themselves up steep, slippery menisci in water. Researchers found two species of water treaders create dimples in the surface with their legs, generating forces that suck them up the slope.
Increasing summer temperatures in northern Alaska are lengthening the snow-free season, allowing shrubs and trees to migrate northward. The region's vegetation change is accelerating global warming by absorbing solar radiation, leading to a positive feedback loop.
A study in western Alaska found that vegetation growth, particularly shrubs, interacts with snow to affect Earth's albedo and alter the winter energy balance of the Arctic. This could lead to accelerated warming and changes in the region's carbon budget, with implications for the rest of the world.
Researchers in Tanzania are facing a significant threat from lions due to the country's rapid population growth and loss of natural prey. The study suggests that pig-control strategies could be an effective way to reduce encounters between lions and people, while also protecting human livelihoods.
A study by Penn State researchers found that invasive brushy honeysuckle hybridized with the Rhagoletis pomonella fruit fly, creating a new insect species. The discovery suggests that hybridization is a common mechanism for speciation in animals, similar to what occurs in plants.
The Bush administration's foreign policy has been widely criticized for its perceived self-interest, leading to widespread distrust and cynicism among the global public. A survey by Pew Research Center found that most people in Pakistan, Turkey, Jordan, and Morocco believe the US ignores their interests.
Shrubs in Arctic regions promote deeper snowdrifts, warming soil and boosting microbial activity. This leads to increased nutrient availability, promoting rapid shrub growth and expansion.
The Lancet editorial argues that criticism of President Bush's AIDS spending is necessary to ensure efficient use of limited resources. Leading scientists and public-health advocates have judged that the size of US investment into AIDS renders President Bush immune from criticism, but this assessment is mistaken.
A study by the University of Washington found that late-night comedy viewership had a significant impact on George W. Bush's favorability rating during the 2000 presidential campaign. The study, known as the 'Letterman Effect,' showed that Bush's ratings increased among late-night viewers after appearing on David Letterman's show.
A team of researchers discovered a specific genetic mutation, Tbx10, responsible for causing cleft lip and palate in mice. This finding suggests that similar mutations may exist in humans, shedding light on the complex development of facial features.
A new study provides support for the ancient origin of the MT visual center in primates, suggesting it evolved early in primate evolution. The researchers used optical imaging to analyze the brain structure of a small nocturnal primate called the galago and found similarities with monkey brains.
Researchers discovered a possible reason for biodiversity in the Andes by comparing North and South American warming over millennia. The region's gradual warming may explain less extinction and increased susceptibility to global warming.
Researchers found that small lice stick to small birds and big lice prefer big birds due to the optimal hiding space between individual 'barbs' in their feathers. The study suggests that size matters for parasites, with larger hosts supporting larger louse species.
A study found that rabbits and cows grazing together lead to a diverse range of plants, with prostrate herbs thriving in short vegetation. The presence of rabbits also determines the extent of shrub cover and oak seedling growth.
David M. Holtzman and Ashley I. Bush have been awarded the 2003 Potamkin Prize for their work on amyloid accumulation and oxidation in Alzheimer's disease. Their research has provided essential basic foundation for understanding how to treat the pathology related to amyloid accumulation.
Forest thinning may improve plant diversity and support animal habitats if done correctly, according to USGS-funded research. The study found that selective thinning of dense young forests can promote the growth of hardwoods, large trees, and old-growth characteristics.
The western chimpanzee is critically endangered with only 4% of its original population remaining. Conservation efforts are underway to address threats such as agricultural development, logging, and the bush meat trade. The action plan provides a roadmap for halting or reversing the decline in chimpanzee numbers in West Africa.
Research shows that exotic honeybees significantly improve coffee crop yields by up to 50%. The study emphasizes the need to preserve natural habitats for these pollinators to maintain biodiversity and sustainable agriculture practices. By removing their natural habitats through intensive cultivation, we risk losing crucial pollinators.
Researchers found depressed heart attack survivors are less likely to adopt healthier behaviors, with those perceiving poor physical health showing the most resistance. This study emphasizes the importance of addressing post-heart attack depression and exploring biological markers associated with it.
A University of Florida study reveals that birds are immune to the spicy chemical in chili peppers, making them essential for seed dispersal. This allows the seeds to germinate and grow in optimal conditions, benefiting the pepper plant's survival.
Scientists use declassified spy satellite images and aerial photographs to document an increase in both shrub numbers and area in a former arid grassland. The study reveals that honey mesquite bushes now dominate large areas of the Southwest, with most shrubs holding their ground despite early droughts.
The National Science Board will hold an open session on May 6 and 7, covering topics such as swearing in NSB nominees, presentations of honorary awards, and committee charges. The agenda for May 7 includes annual business matters and a report from the CPP Task Force on the Environment.
Orrin Pilkey, a nationally known authority on beach hazards, will discuss the risks of building on beaches during a media briefing in Myrtle Beach. The briefing will provide tips on minimizing storm damage and avoiding high-risk areas.
Duke University professors Orrin Pilkey and David Bush will lead a media tour and briefing to highlight the risks of building on beaches prone to hurricane damage. The tour will show better and worse places to build along the Grand Strand, with tips for minimizing storm damage.
Researchers at the University of Wisconsin-Madison have extracted a range of natural chemical compounds from the green ash tree that can repel or poison gypsy moth larvae. The chemicals work at very low concentrations and offer an environmentally benign alternative to existing control methods.