An innovative new method of estimating the density of snake populations without employing the capture-mark-recapture technique has been created by a biologist.
The absence of a single dominant bumblebee species from an ecosystem disrupts foraging patterns among a broad range of remaining pollinators in the system -- from other bees to butterflies, beetles and more, field experiments show.
The Yosemite toad (Anaxyrus canorus) is a rare species found exclusively in California's Sierra Nevada. While its range encompasses hundreds of miles, spanning five national forests and two national parks, the livelihood and future survival of this federally threatened species may come down to mere centimeters. Pools within alpine meadows to be suitable habitat for laying eggs and sustaining tadpoles, little things mean a lot.
A plant extract used for centuries in traditional medicine in Nigeria could form the basis of a new drug to treat Alzheimer's disease, researchers have found.
When army ants move out, a new study found that, instead of chasing each other away, birds work together to follow the column and hunt the insects that marching ants scare out of hiding.
Its name is Stygobromus hayi, the Hay's Spring amphipod. It is spineless. It lacks vision. It is an opportunistic feeder, consuming whatever resources are available -- perhaps including the remains of its own kind. That is where its similarities to some of Washington, D.C.'s more notorious megafauna end. Researchers report on a way to survey it without threatening its existence, as other studies had done.
Coming 150 years after the last description from Sulawesi, five new species from the world's largest genus of trees, Syzygium, highlight the extent of unexplored botanical diversity on the Indonesian island.
Scientists have found evidence that even distantly related Australian fish species have evolved to look and act like each other, which confirms a central tenet of evolutionary theory.
Male birds tend to be better singers than females -- but does the basis for this difference lie in the brain or in the syrinx, their equivalent of our larynx? The researchers behind a new study analyzed the muscle fibers in the syrinxes of male and female birds from a range of species and found, to their surprise, that the amount of 'superfast' muscle didn't explain differences in vocal ability between the sexes.
Researchers have created an effective weapon against the plant disease fire blight and a new method for detection of Salmonella. Both are based on particular viruses that attack only one species of bacteria.
Central Valley rice fields managed as floodplains during the winter can create surrogate wetland habitat for native fish, study shows.
Bird and bumblebee species that nest late in the year are suffering more from the destruction of habitats, new research suggests. With habitats such as hedgerows and hay meadows in decline in many countries, fewer nest sites are available -- leading to more competition.
The distribution of established alien species in different regions of the world varies significantly. Until now, scientists were uncertain about where the global hotspots for established alien species are located. Most alien species can be found on islands and coastal regions.
Vines compete intensely with trees. Their numbers are on the rise in many tropical forests around the world. A new study shows that lianas prevent canopy trees from producing fruit, with potentially far-reaching consequences for rainforest animals.
Roughly 115 million years ago, when the ancient supercontinent Gondwana was breaking apart, a mushroom fell into a river and began an improbable journey. Its ultimate fate as a mineralized fossil preserved in limestone in northeast Brazil makes it a scientific wonder, scientists report.
In 1859, Charles Darwin included a novel tree of life in his trailblazing book on the theory of evolution, On the Origin of Species. Now, scientists want to reshape Darwin's tree.
Until now, there'd been no rigorous framework for telling apart two species of deep-sea octopuses -- they're both pink and warty. A new study, though, shows that the distribution of warts is an important means of telling the two species apart -- the octopuses from the Pacific are wartier than the ones from the Atlantic. That little piece of information could be a big help in ongoing deep-sea research.
A new study describes a newly discovered third species of flying squirrel in North America -- now known as Humboldt's flying squirrel, or Glaucomys oregonensis. It inhabits the Pacific Coast region of North America, from southern British Columbia to the mountains of southern California.
New research reveals that a species of giant elephant that lived 1.5 million to 100,000 years ago -- ranging across Eurasia before it went extinct -- is more closely related to today's African forest elephant than the forest elephant is to its nearest living relative, the African savanna elephant. Understanding elephant evolution is key to protecting present-day elephants from extinction, researchers say.
Some seed mixtures planted on Conservation Reserve Program acres have been contaminated with Palmer amaranth, an aggressive weed. Seed producers must choose between time-consuming or expensive options to certify that their products are free of Palmer amaranth. A new assay can quickly detect Palmer amaranth in mixed seed lots at a comparatively low cost.