Tag: "tree" at biology news

Ancient ants arose 140-168 million years ago

...sity, the researchers reconstructed the ant family tree using DNA sequencing of six genes from 139 represe...h 43 fossils distributed throughout the ant family tree to date key events in the evolution of ants, providing a well-supported estimate for the age of mode...

The complexity of tropical forest structure defies simple characterization

...sical and biochemical principles. Predictions for tree growth, mortality and size distributions are parti...al forests around the world. Observed patterns of tree growth, mortality and abundance deviate substantially from the predictions of metabolic ecology theo...

Ants are surprisingly ancient, arising 140-168 million years ago

...erce, the researchers reconstructed the ant family tree using DNA sequencing of six genes from 139 represe...h 43 fossils distributed throughout the ant family tree to date key events in the evolution of ants, providing a well-supported estimate for the age of mode...

Evolutionary proof that (eating) the chicken came before the egg

...fore the egg. The researchers compared the family tree for four snake species that specialize in eating eggs and found that their ancestors originally ate the lizards that lay the eggs. It might just be that the eggs are in the same location, but there is another possibility. Snakes use chemical cues to ...

Lion mane linked to climate

...Tsavo," Patterson said. Shaking up the lion family tree Based on the results of this study, scientists now know that lion manes can vary tremendously due to local climate. Therefore, taxonomists may be obliged to reanalyze the lion family tree. Over the years, scientists have ascribed lions to various ...

Duke study examines evolutionary consequences of bluebird aggression

...le's aggressiveness by observing its response to a tree swallow that she placed near a nest box. Tree swal...ts -- one favoring open environments and the other tree cover? "If the sorting of aggressive and nonaggressive males into different habitats is consistent o...

Fruitfly study shows how evolution wings it

...ecies of the fruitfly Drosophila into a fly family tree to reveal which species had gained or lost wing spots in comparison to their ancestors. The researchers then analyzed the genetic mechanisms that caused two of the species to gain wing spots independently in comparison to ancestral flies which did no...

Honeybee decision-making ability rivals any department committee

...ees fly the coop to hunt for a new home, usually a tree cavity, they have a unique method of deciding whic...its queen and half the hive will swarm to a nearby tree and quietly wait while several hundred scouts go house hunting. To explore the decision-making proce...

Diverse tropical forests defy metabolic ecology models

...les, Helene Muller-Landau and colleagues show that tree growth, mortality and abundance in fourteen tropic...some very large trees, or the general shape of the tree size distribution curve," explains first author, Helene Muller-Landau from the University of Minneso...

Invasive species harms native hardwoods by killing soil fungus

...and plants depend on the fungi for nutrients. When tree seedlings, which depend strongly on AMF, began to ... that diminished microbial activity had suppressed tree growth. Other experiments showed that adding garlic mustard extracts to soil impaired AMF colonizati...

Computers to save unique type of American red squirrel

... is an introduced species of squirrel. The Abert's tree squirrel likes to eat similar types of food to the reds and also plunders the food middens they build to see them through the winter. Other threats include damage to its habitat by insects and huge forest fires, as well as predation from birds of pr...

Scientists discover that ancient genes dictate flowering, fall bud set

...-- It often requires many years of growth before a tree is ready to flower -- a delay that makes tree breeders impatient. Now, scientists at universities in Sweden and the United States have discovered ...

Important gene controlling tree growth and development found

...the flowering time of annual plants, also controls tree flowering. With the help of this gene poplar trees...through for our understanding of the regulation of tree growth and development might revolutionize forest tree breeding and can lead to the development of n...

Global team of scientists describes new genus of African monkey: First in 83 years

...to identify the placement of Kipunji on the family tree of primates. Given the results of the molecular and anatomical analyses, the team placed Kipunji in its own genus Rungwecebus, named after Mt. Rungwe where Kipunji was first observed. These authors agreed that the ability to study an actual specimen ...

Using satellite observations to study photosynthetic trends in northern circumpolar high latitudes

...ditional analysis of existing data sets, including tree rings, and improvements in process models of ecosy...of past temperature and precipitation derived from tree rings. He was awarded a Canon National Parks Science Scholarship in 2001 for work combining tree rin...

Scientists scuttle claims that 'Hobbit' fossil from Flores, Indonesia, is a new hominid

...ones represented a new species in the human family tree that they named Homo floresiensis. Their interpretation was widely accepted by the scientific community and heralded by the popular press around the world. Because of its very short stature, H. floresiensis was soon dubbed the "Hobbit." Increasingly,...

Tropical forests leak nitrogen back into atmosphere, say scientists

...e they live by converting the nitrates fed upon by tree roots back into nitrogen gas, which is lost to the atmosphere. The researchers who recently discovered this behavior say the findings are important for our understanding of how tropical forests fit into the earth's climate system. "Tropical forests ...

DOE JGI finishes 100th microbial genome

...e to the naked eye, cross all main branches of the tree of life, Eubacteria, Archaea, and even the Eukaryota, which include microscopic fungi, plants, and animals. The 100th microbial genome, a project originally proposed by Dr. Kevin Sowers of the Center of Marine Biotechnology at the University of Mar...

Discovery may speed forest biotechnology

...tep forward in understanding the basic genetics of tree growth. The findings were made by scientists from ...important advances in intensive forestry and fruit tree improvement. Information of this type, researchers say, may also help scientists better predict how ...

UCLA biomathematician earns prestigious peer award

... findings about early branches in the evolutionary tree of life were published in the June 2005 edition of the journal Systematic Biology. "Dr. Suchard is an accomplished scientist with a history of winning prizes for his research, even when he was a student," said Dr. Elliot Landaw, chair of the Departme...

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(Date:10/19/2014)... India over the last 30 years contributed only ... during that time, according to a new study ... ., "Energy access is fundamental to development: it ... education, communication, and health," says IIASA researcher Shonali ... energy access is widely agreed to be an ...
(Date:10/17/2014)... in German . ... day in order to reproduce? And why are there two ... the latest issue of the research journal Molecular Human ... Steven Ramm from Bielefeld University Bielefeld has compiled this special ... for a female to copulate with several males in quick ...
(Date:10/16/2014)... and Washington land managers have a new synthesis of ... moist mixed-conifer (MMC) forests in the two states. ... in Eastern Oregon and Washington: A Synthesis of the ... a general technical report published by the U.S. Forest ... to a request from managers for a synthesis of ...
Breaking Biology News(10 mins):Improved electricity access has little impact on climate change 2Sperm wars 2New report synthesizes best available science on management of moist mixed-conifer forests 2
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