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Tag: "diversity" at biology news

Seeing the forest and the trees

... edition of the journal Science suggests that tree diversity in tropical forests plays a crucial role in determ...ia University. They simulated variations in forest diversity that resulted from a range of different extinction scenarios: those governed by biological character...

UF study first to quantify validity of DNA I.D. tool using marine snails

...fferent species is greatest, where the bulk of the diversity of life is, including large numbers of undescribed forms." In those cases where the data is incomplete because the collection of known species is small, scientists currently rely on threshold values to identify the likelihood of a particular specime...

Applying ecological laws to bacteria

..., found that the patterns of abundance and genetic diversity of bacteria living in oil-based metal-cutting flui...ng as it will allow us to predict some fundamental diversity patterns of bacterial communities from information that is fairly simple to obtain. Combined with th...

Housecat-sized Siberian tiger cubs get collared

...ne conversion was critical for shaping the genetic diversity of this region in humans. "This study paves the way for examining an individual's potential reproductive success based on sequence variants of the LHB/CGB genes," explains Laan. "We may be able to determine whether an individual is particularly s...

Studies on human genome variation provide insight into disease

...ne conversion was critical for shaping the genetic diversity of this region in humans. "This study paves the way for examining an individual's potential reproductive success based on sequence variants of the LHB/CGB genes," explains Laan. "We may be able to determine whether an individual is particularly s...

On a wing and a prayer - Alaska researchers seek clues to bird flu

... initial goal of the (UA) program is to assess the diversity and prevalence of avian influenza in Alaska's bird populations," said Jonathan Runstadler, veterinarian, assistant professor of molecular biology at UAF's Institute of Arctic Biology, and a lead scientist on the Avian Influenza Program. Runstadler a...

Color perception is not in the eye of the beholder: It's in the brain

... connection among certain genes and the number and diversity of color cones, but Williams is continuing to search for the responsible combination of genes. ...

Does manganese inhaled from the shower represent a public health threat?

...g and important theoretical papers that foster the diversity and debate upon which the scientific process thrives." Everyone is exposed to small levels of manganese, which is found in food and many types of rocks and enters the air, soil and water. But, at higher levels, manganese is toxic to the central nerv...

Stolen gene allows insect virus to enter cells

...ng host DNA with their own. "The way they generate diversity in their genome is by recombination," Blissard says. No matter how the original f gene moved from the fruit fly into viruses, it had to change a lot to win its current starring role in infectivity, Blissard says. He and Lung found that while viral F...

Genetically modified maize not found in southern Mexico

...tive plants frightens many citizens. "The genetic diversity of native maize is an important resource with great cultural significance," Snow said. "If farmers think that their highly revered native plants have been altered by transgenes, they might even stop planting them." "No one knew how common transgenic...

Birds and bats sow tropical seeds

Restoring the rich diversity of trees that once characterized expansive tracts ... station. "The point of the project is to restore diversity to agricultural landscapes," said Howe. "We'll test the proposition that immigration of trees into t...

Acid water in East Java threatens biodiversity and local welfare

...rvae could survive the extremely acidic water. The diversity of microorganisms and algae was also very low. The inhibited breakdown of organic material was another ecological effect measured. Lohr established this using packs containing jati and bamboo leaves, which she suspended in the river at various locati...

Skull study sheds light on dinosaur diversity

...od adds to a growing body of evidence for sauropod diversity at the end of the dinosaur era. Wilson described the reconstruction and the conclusions he drew from it in a paper published Aug. 24 in the Journal of Systematic Palaeontology. He based the reconstruction on two nearly complete skulls that were fou...

DNA from feathers tells tale of eagle fidelity

...thern Kazakhstan. This reserve supports an unusual diversity of raptors and is home to no less than 24 different species of hawks, eagles, falcons, owls and harriers. Also participating in this study were Evgeny A. Bragin of the Naurzum State Nature reserve, Karamendy, Kazakhstan; and O. Eugene Rhodes Jr., of...

UCSD discovery may provide novel method to generate medically useful proteins

... Biology in October. Since this degree of protein diversity is extremely rare, recreating the process in a tes...netic mechanism used by the phage to generate this diversity is completely different from that used by animals to produce antibodies, and has the advantage of gi...

From a Few Wild Ancestors, a Citrus Cornucopia

...vely small core subset that represents much of the diversity in the Citrus genome. This makes it easier to sear...ern China to assess firsthand the amount of citrus diversity still present there. Molecular techniques now available should make the task of recognizing novel ci...

Ants, not evil spirits, create devil's gardens in the Amazon rainforest, study finds

...ainforests are densely populated with a remarkable diversity of trees, vines, shrubs and wildflowers. But devil's gardens usually consist of a single plant, D. hirsuta, which happens to be the preferred habitat of the devil's garden ant, M. schumanni. In addition to the evil-spirit legend, two scientific prop...

A Father’s Day Gift: Free DNA Paternity Testing

... 34 known phyla on Earth, the report says. Species diversity is known to be as high as 1,000 per square meter in the Indo-Pacific Ocean. Significantly, the ratio of potentially useful natural compounds is higher in marine than terrestrial organisms. There is, therefore, a higher probability of commercial succe...

Clear rules needed to govern deep sea bioprospecting: UNU

... 34 known phyla on Earth, the report says. Species diversity is known to be as high as 1,000 per square meter in the Indo-Pacific Ocean. Significantly, the ratio of potentially useful natural compounds is higher in marine than terrestrial organisms. There is, therefore, a higher probability of commercial succe...

Proposal would allow wild animals to roam North America

...ese keystone species -- animals that contribute to diversity of life and which the rewilding researchers would like to reintroduce -- play a disproportionate role in an ecosystem. Extinction of a keystone species can lead to homogenous landscapes with less biodiversity and different species proliferating and d...

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