Of ants and trees: "Evolutionary déjà vu" in the tropical rainforest
Ants are famous for their regimented and complex social behaviors. In the tropics, they are also famous for forming mutualisms with plants. Certain species of trees have conspicuous hollow swellings that house ants, often feeding the ants with specia.....»»
Monsoon floods in India"s Gujarat kill at least 28 people
Intense monsoon rains and floods in India's Gujarat state killed at least 28 people in the past three days, some drowning and others hit by falling trees, government officials said......»»
Environmental policy in Brazil leads to less violence, researchers find
In December 2007, the then Brazilian government passed a law to curb the illegal destruction of the rainforest. A study by researchers from the Insper Research Institute in São Paulo and the University of Bonn now shows an interesting side effect: w.....»»
Climate change feedbacks lead to surge in natural methane emissions
Attempts to cut greenhouse gases made tougher by increased emissions. Enlarge / A view of the Pantanal wetlands in Brazil. New research shows a large chunk of global methane emissions are from rotting vegetation in tropical wetla.....»»
A price on their heads? Implications of international trade for African hornbills in Cameroon
Tropical birds known for their massive bills, hornbills include 32 Asian and 27 African species in the avian family Bucerotidae. Many hornbills have a casque on their upper mandible, which in some species is spectacularly colorful. Many species also.....»»
Kamikaze termites protect their colony with the help of a special enzyme whose secrets have now been uncovered
Researchers from the Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, in cooperation with colleagues from the Faculty of Tropical AgriScience of the Czech University of Life Sciences in Prague, are unraveling the myst.....»»
Darwin"s fear was unjustified: Study suggests fossil record gaps not a major issue
Fossils are used to reconstruct evolutionary history, but not all animals and plants become fossils and many fossils are destroyed before we can find them (e.g., the rocks that contain the fossils are destroyed by erosion). As a result, the fossil re.....»»
Record-breaking drought in southern China linked to Eurasian warming and tropical sea surface temperature
Southern China experienced an extreme drought that persisted from summer to autumn in 2022, ranking as the most severe drought since 1980. The reason for the occurrence of this extreme drought event was investigated. It shows that both the Eurasian w.....»»
From antiquity to adaptation: Tracing the genetic journey of east Asian chestnut varieties
Uncovering the genetic saga of Castanea trees, a study maps their evolutionary journey and local climate adaptations. This research reveals the genetic markers and molecular mechanisms that have allowed these nut fruit trees to adapt and flourish acr.....»»
How engineered walnuts combat drought through grafting
Drought is a major threat to walnut production globally, often resulting in lower yields and weaker trees. While grafting has traditionally been used to improve the resilience of fruit and nut trees, the exact mechanisms of signal transfer between ro.....»»
Carbon emissions from forest soil will likely grow with rising temperatures
The soils of northern forests are key reservoirs that help keep the carbon dioxide that trees inhale and use for photosynthesis from making it back into the atmosphere. But a unique experiment led by Peter Reich of the University of Michigan is showi.....»»
Physics meets machine learning for better cyclone predictions
Time is of the essence in tropical cyclone prediction: The more warning time a community has, the better prepared its members will be when a storm makes landfall. Currently, the path and nature of tropical cyclones can be predicted up to only five da.....»»
Trees stripped by invasive caterpillars muster defenses that can harm native insects, research shows
An invasive insect with an insatiable appetite can cause serious problems for a favorite native moth that likes the same food source—even though the two are never in direct competition for a meal, according to new research, published in the journal.....»»
"Masters of shape-shifting": How darkling beetles conquered the world
Large-scale genomic analysis of darkling beetles, a hyper-diverse insect group of more than 30,000 species worldwide, rolls back the curtain on a 150-million-year evolutionary tale of one of Earth's most ecologically important yet inconspicuous creat.....»»
Hurricane Ernesto downgraded to tropical storm as it exits Bermuda
Hurricane Ernesto was downgraded to a tropical storm Saturday after it lashed Bermuda with heavy rains and strong winds, leaving much of the British Atlantic Ocean territory without power before continuing on its path toward eastern Canada......»»
New research shows agricultural impacts on soil microbiome and fungal communities
New research from Smithsonian's Bird Friendly Coffee program highlights a type of biodiversity that often gets overlooked: soil bacteria and fungal communities. For over twenty years, Smithsonian research has shown that coffee farms with shade trees.....»»
Seoul residents sweating with record "tropical nights" weather
Residents of South Korea's capital are resorting to novel ways to beat the heat as a century-old weather record fell Friday following a 26th "tropical night" in a row—when the temperature stays above 25 degrees Celsius (77 Fahrenheit)......»»
Tree mortality may lead to carbon tipping point in the Amazon by 2050s
The Amazon rainforest is home to a diverse cast of plants and animals. This vital, verdant landscape also plays a crucial role in managing the effects of climate change by storing significant amounts of carbon and helping regulate temperatures and ra.....»»
Trees compete for space, light and resources, and those clashes can leave battle scars
When you walk through a forest, it may feel like a static setting where very little is happening. But trees are constantly interacting and reacting to each other as they grow. There's intense competition for light and space. Every shift affects the o.....»»
California is home to millions of urban trees: What happens when they die?
To stop California's 6 million urban trees from knocking out power lines, crashing through houses, or lying across streets when they die, humans have to intervene......»»
First biogeographic map of ants reveals nine global realms
The distribution of species around the globe is not a random process but an outcome resulting from several evolutionary mechanisms as well as past and current environmental limitations. As a result, since the mid-19th century, biologists have identif.....»»