Popular Tree Rings News and Current Events

Popular Tree Rings News and Current Events, Tree Rings News Articles.
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Insect food webs
Biological diversity stabilizes species interactions. (2019-03-06)

Climate impacts drive east-west divide in forest seed production
Younger, smaller trees that comprise much of North America's eastern forests have increased their seed production under climate change. But older, larger trees that dominate western forests have been less responsive, a Duke-led study warns. This continental divide could limit western forests' ability to regenerate following large-scale diebacks linked to rising temperatures and intensifying droughts. Over time this might dramatically alter the composition and structure of 21st century North American forests. (2021-02-23)

Parasitic plants conspire to keep hosts alive
The plant that encourages kissing at Christmas is in fact a parasite, and new research reveals mistletoe has an unusual feeding strategy. When two mistletoes invade the same tree, they increase photosynthesis to get the nutrients they need, essentially sharing the tree and causing it less harm. (2021-02-23)

Saturn is the second largest planet in our solar system and has a characteristic ring. Japanese researchers have now synthesized a molecular 'nano-Saturn'. As the scientists report in the journal Angewandte Chemie, it consists of a spherical C(60) fullerene as the planet and a flat macrocycle made of six anthracene units as the ring. The structure is confirmed by spectroscopic and X-ray analyses. (2018-06-08)

Polymer reversibly glows white when stretched
Polymers that change their appearance in response to mechanical forces can warn of damage developing in a material before the stress causes structural failure. Researchers now report in ACS Central Science that they've developed a first-of-its-kind elastic polymer blend that displays white fluorescence when deformed and then goes dark after relaxing back to its original shape. (2019-04-24)

The black forest and climate change
Silver and Douglas firs could replace Norway spruce in the long run due to their greater resistance to droughts. (2017-06-30)

Innovations for investigating the plant tree of life
Advances in genome sequencing are providing vast amounts of genetic information that researchers are using to explore the plant family tree. This special issue showcases cutting-edge techniques that are providing solutions to challenges in the study of evolution of species (or phylogenetics); issue highlights include an overview of current options for phylogenomic studies, a new natural language processing pipeline, metagenomics pipeline comparisons, and reviews of sequence capture methods and custom pipelines for marker selection. (2018-04-19)

Scientists 'fix' bacterial tree of life
Bacterial classification has been given a complete makeover by a team of University of Queensland researchers, using an evolutionary tree based on genome sequences. The study, led by Professor Philip Hugenholtz from UQ's School of Chemistry and Molecular Biosciences and the Australian Centre for Ecogenomics, relied on a technique called metagenomics, where bacterial genomes are obtained straight from environmental samples, to create a more complete picture of the structure of the bacterial kingdom. (2018-08-27)

Using tree-fall patterns to calculate tornado wind speed
Daniel M. Rhee, a PhD student at University of Illinois specializing in Structures in Civil Engineering, focuses his research on modeling tornadoes and near-surface wind speeds using tree-fall and damage patterns. With this method, Rhee and his research advisor, Franklin T. Lombardo, estimated the near-surface wind speeds of an actual tornado event in Naplate, IL. Rhee will present this research at the Ecological Society of America's 2018 Annual Meeting in New Orleans, LA. (2018-06-22)

Unique insight into development of the human brain: Model of the early embryonic brain
Stem cell researchers from the University of Copenhagen have designed a model of an early embryonic brain. The model will increase our understanding of how the human brain develops and can thereby help to accelerate the development of stem cell treatments for brain disorders such as Parkinson's disease, epilepsy and dementia. (2020-05-25)

'Zipping-up' rings to make nanographenes
Nanographenes are attracting wide interest from many researchers as a powerful candidate for the next generation of carbon materials due to their unique electric properties. Scientists at Nagoya University have now developed a fast way to form nanographenes in a controlled fashion. This simple and powerful method for nanographene synthesis could help generate a range of novel optoelectronic materials, such as organic electroluminescent displays and solar cells. (2018-02-08)

Blue Brain solves a century-old neuroscience problem
In a front-cover paper published in Cerebral Cortex, EPFL's Blue Brain Project, a Swiss Brain Research Initiative, explains how the shapes of neurons can be classified using mathematical methods from the field of algebraic topology. Neuroscientists can now start building a formal catalogue for all the types of cells in the brain. Onto this catalogue of cells, they can systematically map the function and role in disease of each type of neuron in the brain. (2019-03-21)

Healthy blood stem cells have as many DNA mutations as leukemic cells
Researchers from the Princess Máxima Center for Pediatric Oncology have shown that the number of mutations in healthy and leukemic blood stem cells does not differ. Rather the location of the mutations in the DNA is relevant. Using the mutation patterns in the hematopoietic stem and progenitor cells (HSPCs) the team was able to trace the developmental lineage tree of the cells. (2018-11-28)

UChicago scientists craft world's tiniest interlinking chains
For decades, scientists have been trying to make a true molecular chain: a repeated set of tiny rings interlocked together. In a study in Science published online Nov. 30, University of Chicago researchers announced the first confirmed method to craft such a molecular chain. (2017-12-06)

Jet stream changes since 1960s linked to more extreme weather
Increased fluctuations in the path of the North Atlantic jet stream since the 1960s coincide with more extreme weather events in Europe such as heat waves, wildfires and flooding. The new research published in Nature Communications is the first reconstruction of historical changes in the North Atlantic jet stream prior to the 20th century. By using tree rings, the researchers developed a historical look at the position of the North Atlantic jet back to 1725. (2018-01-12)

High success rate reported for diabetic Charcot foot surgery
Nearly four out of five diabetic patients with severe cases of a disabling condition called Charcot foot were able to walk normally again following surgery, a Loyola Medicine study has found. (2017-12-14)

How the brain might compensate stress during learning
When people have to assess a situation within seconds, it helps them to draw on learned categories. Psychologists from the Ruhr-Universität Bochum examined with the help of electroencephalography (EEG) how well category-learning works in a stressful episode. They published their research on a mechanism, the brain may compensate stress with, in the Journal of Cognitive Neuroscience. (2018-03-08)

A molecular 'atlas' of animal development
Scientists have studied the nematode worm Caenorhabditis elegans for decades, making essential contributions to basic science. In the latest milestone, a team led by University of Pennsylvania scientists uses cutting-edge technology to individually profile the genes expressed in more than 80,000 cells in a developing C. elegans embryo. (2019-09-05)

Forest grazing counteracts the effectiveness of trees to reduce flood risk
Planting trees can reduce flood risk, but a high intensity forest land use, such as grazing, can counteract the positive effect of the trees, a recently published study suggests. The study, undertaken by Lancaster University and the Centre for Ecology and Hydrology and published in the journal Geoderma, investigated the rate that water infiltrated the soil under trees at an experimental agroforestry site in Scotland. (2017-10-10)

Biodiversity loss in forests will be pricey
A new global assessment of forests -- perhaps the largest terrestrial repositories of biodiversity -- suggests that, on average, a 10 percent loss in biodiversity leads to a 2 to 3 percent loss in the productivity, including biomass, that forests can offer. (2016-10-13)

Unravelling the costs of rubber agriculture on biodiversity
A striking decline in ant biodiversity found on land converted to a rubber plantation in China. (2016-05-16)

Study: Forest resilience declines in face of wildfires, climate change
The research team said that with a warming climate, forests are losing their resilience to wildfires. (2017-12-14)

Chemical synthesis with artificial intelligence: Researchers develop new computer method
The board game Go was long considered to be a bastion reserved for human players due to its complexity. Nowadays, however, the world's best players no longer have any chance of winning against the 'AlphaGo' software. Researchers at the University of Muenster have now demonstrated that the recipe for the success of this software can be put to excellent use to plan chemical syntheses. The study has been published in the current issue of the Nature journal. (2018-03-29)

A big difference between Asian and African elephants is diet
New research has shown that there are significant differences between the Asian and the African forest elephant -- and it isn't just about size and the shape of their ears. It is about what they eat and how they affect forest ecosystems. (2017-08-30)

Asthma attacks reduced in tree-lined urban neighborhoods
People living in polluted urban areas are far less likely to be admitted to hospital with asthma when there are lots of trees in their neighborhood, a study by the University of Exeter's medical school has found. (2017-11-17)

Lack of water is key stressor for urban trees
A recent study finds that urban trees can survive increased heat and insect pests fairly well -- unless they are thirsty. Insufficient water not only harms trees, but allows other problems to have an outsized effect on trees in urban environments. (2018-03-13)

Mapping functional diversity of forests with remote sensing
Productivity and stability of forest ecosystems strongly depend on the functional diversity of plant communities. UZH researchers have developed a new method to measure and map functional diversity of forests at different scales -- from individual trees to whole communities -- using remote sensing by aircraft. Their work paves the way for future airborne and satellite missions to monitor global plant functional diversity. (2017-11-13)

Tree care workers need better training to handle dangers on the job, Rutgers study finds
A Rutgers study calls attention to post-storm hazards posed to tree care workers and provides safety recommendations. (2018-03-16)

How proteins reshape cell membranes
Small 'bubbles' frequently form on membranes of cells and are taken up into their interior. The process involves EHD proteins -- a focus of research by Prof. Oliver Daumke of the MDC. He and his team have now shed light on how these proteins assemble on the surface of a cell and reshape its membrane. (2017-02-24)

Hunting is changing forests, but not as expected
In many tropical forests, over-hunting is diminishing the populations of animals who are vital for dispersing the seeds of woody plants. Those same plants are vital for carbon storage and previous theoretical modeling studies predicted dire consequences to defaunation, this research suggests otherwise. Instead the data shows the effects on the ecosystem are less straightforward and less immediately devastating. (2018-02-15)

A scientific study characterizes two new Galician olive varieties for the first time
The research, done in collaboration with the University of Cordoba, recognizes the potential and high quality of these olive oils. (2018-03-23)

Methane emissions from trees
A new study from the University of Delaware is one of the first in the world to show that tree trunks in upland forests actually emit methane rather than store it, representing a new, previously unaccounted source of this powerful greenhouse gas. (2017-03-30)

Tree of life for flowering plants reveals relationships among major groups
The evolutionary (2007-11-26)

Mathematician's study of 'swarmalators' could direct future science
How does the Japanese tree frog figure into the latest work of noted mathematician Steven Strogatz? As it turns out, quite prominently. Cornell researchers used the curious mating ritual of male Japanese tree frogs as inspiration for their exploration of 'swarmalators' -- their term for systems in which both synchronization and swarming occur together. (2017-11-17)

Smithsonian's National Museum of Natural History reveals ants as fungus farmers
It turns out ants, like humans, are true farmers. The difference is that ants are farming fungus. Entomologists Ted Schultz and Seán Brady at the Smithsonian's National Museum of Natural History have published a paper in the March 24 issue of the journal Proceedings of the National Academy of Sciences, providing new insight into the agricultural abilities of ants and how these abilities have evolved throughout time. (2008-03-24)

How trees could save the climate
Around 0.9 billion hectares of land worldwide would be suitable for reforestation, which could ultimately capture two thirds of human-made carbon emissions. The Crowther Lab of ETH Zurich has published a study in the journal Science that shows this would be the most effective method to combat climate change. (2019-07-04)

Does Mars have rings? Not right now, but maybe one day
Purdue researchers developed a model that suggests that debris that was pushed into space from an asteroid or other body slamming into Mars around 4.3 billion years ago and alternates between becoming a planetary ring and clumping up to form a moon. (2017-03-20)

Strange 'nude' fossil creature from half a billion years ago
A discovery of a new species of sponge-like fossil from the Cambrian Period sheds light on early animal evolution. (2018-06-19)

RUDN University chemists suggest a new way to synthesize steroid analogs
Scientists from RUDN University and the Ivan Franko National University of Lviv have found a way to produce aromatic rings in organic compounds in three stages. These stages proceed successively in one-pot conditions and at room temperature. Now analogues of hormones, steroids, some sugars, terpenes and other complex organic substances can be synthesized faster and at softer conditions. The paper was published in Tetrahedron Letters. (2017-11-15)

Hidden Inca treasure: Remarkable new tree genus discovered in the Andes
Hidden in plain sight -- that's how researchers describe their discovery of a new genus of large forest tree commonly found, yet previously scientifically unknown, in the tropical Andes. Researchers from the Smithsonian and Wake Forest University detailed their findings in a study just released the journal PhytoKeys. (2017-09-07)

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