Date and the end of the Great Barrier Reef coral

Date and the end of the Great Barrier Reef coral

Australian marine scientists to develop land near the Palm Island in Queensland have discovered evidence of an historic coral destruction.Then, between 1920 and 1955, branching Acropora failed to recover.
Queensland University ARC Centre of Excellence for Coral Reef Studies of the coral community of scientists quickly eliminate human-made changes in water quality on the Great Barrier Reef corals demonstrates the potential link between loss.
Professor John CoECRS and UQ Pandolfi, it is evident that human activities on the Great Barrier Reef corals are involved in half of the recent loss of weight is added, the.
Destruction of large branching corals author grazing and agriculture in the 19th century near the end of the Burdekin River Basin took place in the vast expansion has been clearing land, GBR lagoon increase the amount of nutrients in the soil and causes, the alleviate CoECRS and UQ, Dr George Roff, a new research.
barrier can reduce the ability to bounce back. said. "he says.
Jian Xin, founder methods using radioisotope facility at the University of Queensland Zhao. They cyclones, floods and sea surface temperature during the period of record is associated with.
"... Our results mean increased European settlement in Queensland coast after sidelines with sediment and nutrient loading in coral communities undetected end historic," report the researchers in their paper.
The important thing to end this mass coral bleaching episodes in recent decades have occurred before, and the first detailed survey of the GBR coral launched in the 1980s.

And even more important, as we do not have our cores covering the last 1700 years by the time I got in an accident during the period of branching corals flourish -. Despite all the cyclones and natural influences that bear. "

Acropora corals in two places completely vanished, while one-third of Acropora coral Pavona no significant change in species, the researchers say the Caribbean parallels human impact was similar comments.

He said that on a global scale, our results where land use change in the Caribbean region from 1960 Acropora corals in reefs near the coast have been involved in a significant reduction from the current report. '

The coral survey period was present before the effective coral records began, researchers suggest that 'unseen' shifts may lead to the possibility of significantly - research has taken a real possibility. In other words, GBR degraded it appears to be today's eyes.

"We know that some places in the area, branching Acropora is currently the dominant reef builder is why it was apparent that some inshore reefs question is flexible, while others failed to deal with failure." Dr. Roff said.

. "Professor Pandolfi said.

Local calls only for anaesthetised brain

 Local calls only for anaesthetised brain

LAURA A team led by Lewis, Massachusetts Institute of Technology, and Patrick Purdon, Harvard Medical School, brain epilepsy was a window during the operation. Temporal cortex of each patient already, which means the team as they measure neuronal activity propofol, a general anesthetic was general had electrodes implanted in.The team asked each patient as they sound, the answer away. Then he stopped answering, Lewis and neuronal activity in cortical Purdon has seen dramatic changes. Slow-wave oscillations - brainwaves that deep sleep, the dream occur - has increased almost immediately.Anaesthetists have put people to sleep for years, but how they are using drugs, you send in your sleep is still largely a mystery. New research shows that long-distance communication in the brain involves obliteration.

Stop firing

Locally, the slow waves were synchronized neurons near each other in the waves where the peaks and troughs experienced in the coordination of activity, consistent communication means. However, slow waves across the cortex were not in sync.

Consciousness while at the same time in different areas of the cortex fire, if necessary, the neurons can communicate long distance. Each slow wave on top of a bridge in the brain represents the area was quiet - and the neurons stop firing. So a quiet area, in a region that is awake can not get a signal, synchronized slow waves of long distance communication near impossible.
Were about four square millimeters in harmony, in which neurons communicate before the patient lost consciousness.

Time zones

"These brain regions are in different time zones is like," said Lewis, the only other time zones represent the product. "The other is a field up."

Ludwig Lin, medical anesthetist at the University of California, San Francisco, medically speaking, anesthesia how much we know about brain functions, we believe that all patients for their actions you can not wake up with memories, that were not included in the study.

To achieve this goal, Lin's application form, including inhaled general anesthetics, drugs to see how a lack of awareness of the differences in the research hope to see, and that consciousness the loss of one's mind.