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Tag: "warm" at biology news

2005 was the warmest year in a century

...he available data indicate that 2005 was unusually warm in the Arctic. In order to figure out whether the... of the century was 1998, when a strong El Nino, a warm water event in the eastern Pacific Ocean, added warmth to global temperatures. However, what's signi...

High-tech tags on marine animals yield valuable data for biologists and oceanographers

...eb. But the 2004-05 season was marked by unusually warm water along the coast, and the sea lions were forced to change their diets and their foraging patterns, Weise said. "The sea lions disappeared from Monterey Bay, as did the bait fish. We were only able to tag three male sea lions that year, and they...

Nanotechnology may find disease before it starts

...ed the animals and placed them on their backs on a warm imaging table. Rosol said that Liu and her team are working on creating biodegradable nanoparticles. For the purposes of this study, however, the researchers wanted to use a hard substance, silica, to see if their idea would work. The strongest ultr...

Honeybee decision-making ability rivals any department committee

...to the waiting bees in the swarm that it's time to warm up their flight muscles in preparation for takeoff. Each scout does so by scrambling through the swarm cluster and briefly pressing its vibrating thorax against the other bees to stimulate them to activate their wing muscles. Once every bee has its t...

Climate change drives widespread amphibian extinctions

... it more deadly. So the idea that it flourishes in warm years, which the evidence now supports, is new. The study results come at a time of growing concern about the future of amphibians. The Global Amphibian Assessment, published in 2004, found that nearly one-third of the world's 6,000 or so species of...

The diversity of marine life in the Gulf of Maine region is much greater than previously thought

...astern North Atlantic. We associate corals with warm tropical waters rather than the cold Gulf of Maine. But the Gulf of Maine region hosts 14 known species of deepwater coral, some of which have only recently been found by Gulf of Maine scientists. Image on left: Gersemia rubiformis, Red Soft Coral....

'Dead zone' summer killed billions of ocean state mussels

...n, phosphorus and other nutrients. Often fueled by warm temperatures and a lack of circulation, this nutrient rush can cause algae blooms. When the algae dies, it sinks to the bottom, where it is consumed by bacteria ?along with dissolved oxygen. This is what happened in Narragansett Bay in the summer of ...

Insect predation sheds light on food web recovery after the dinosaur extinction

...nstable. At Castle Rock, plants flourished in the warm wet climate and without insect predatory pressure -- possibly because their rainforest-type leaves were already thick, tough, and hard to eat -- plant species proliferated and thrived for a short time. At Mexican Hat, 16 species of mostly thin-leaved...

Slow-frozen people? Latest research supports possibility of cyropreservation

...could, by slow cooling/warming, supercool and then warm the cells without the crystallization of water then the cells would be undamaged." ...

Breaks in hibernation help fight bugs

...d supplies are low and the need for energy to stay warm is high. The immune system is in sleep mode as wel... temperature. Most bacteria grow faster when it is warm and much slower when it is cold. For animals exposed to Salmonella, which multiplies rapidly in warm...

When the going gets tough, slime molds start synthesizing

...ar slug-like creature that locomotes en masse to a warm spot. There, in response to the DIF-1 signal, slugs literally stand up and their cells metamorphose into either a column of stalk cells or next-generation spore cells, which perch atop the column waiting for food supplies to be restored. Noel and M...

Primates take weather into account when searching for fruits

...ich they had found fruit before) after a period of warm and sunny days than after a period of cold and cloudy days. Temperature and solar radiation are known to accelerate maturation of fruits and insect larvae inside them. The researchers were able to show that past weather conditions--as opposed to sens...

Genetic snooze button governs timing of spring flowers

...mber of days of cold to ensure that any subsequent warm weather actually indicates that spring has arrived," Amasino says. The Wisconsin team led by Amasino has worked out much of the process of vernalization, and their hope is to add to knowledge of other cold-regulated processes such as the regulation ...

Arctic coring expedition continues to yield new clues

...e ACEX cores clearly show that the Arctic got very warm and wet during the PETM," Dickens said. "Even tropical marine plants thrived in the balmy conditions." In today's oceans, certain species of microscopic plants are known to rapidly multiply and create algal blooms. Dickens said that fossils of the...

Large dinosaurs were extremely hot in their day, UF study finds

...lude that many of the larger dinosaurs were indeed warm reptiles," said Frank Seebacher, Ph.D., of the Sch...olic heat to keep warm; in other words, if we were warm reptile-like ectotherms, we would save a lot of money on the grocery bill." In the meantime, the r...

Snakes' virtual glasses, leopard spots and all-optical transistors

...are sensitive to the infrared radiation emitted by warm prey such as rats, rabbits, and Samuel L. Jackson. An optical analysis of pit organs suggests that snakes shouldn't be able to use the organ to track prey very well because the pit aperture is large and the organ is not very deep. However, studies ha...

Biofuels researcher searches for new sources

..., a double-cropping system with winter cereals and warm season grasses like winter triticale and sweet sorghum, can be adopted. "The biomass production increases by as much as 50 percent using this system compared to a single-cropping system," Chen explained. "Even perennial grasses like switchgrass mig...

Report warns about carbon dioxide threats to marine life

...Langdon says. Mass bleaching occurs when unusually warm temperatures cause the coral to expel the colorful microscopic algae that provide the coral polyps with food. Many calcifying organisms--including marine plankton such as pteropods, a planktonic marine snail--are affected by the chemistry changes. S...

Pollutant haze heats the Arctic

...dy finds a surprising new way society's pollutants warm the far north: the Arctic's well-known haze ?made ... we are finding there is another way pollution can warm up the Arctic. Particulate pollution from factories and cars can be transported long distances to th...

Where have all the butterflies gone?

... so they did not emerge to take advantage of early warm weather in February. Then March turned cold and wet, wiping out the breeding of species that had emerged. While northern California was soaked, the southwest desert has had a very dry "La Nina" winter, leaving little food for the caterpillars of the...

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