http://demonetisation.com/file/2017-03-31/1490952432_e1c682302c/1490952432_e1c682302c demonetisation.com | File Crawler

File Information

http://www.brightsurf.com/news/headlines/99114/Evolution_in_rainforest_flies_points_to_climate_change_survival.html
file/2017-03-31/1490952432_e1c682302c/1490952432_e1c682302c Evolution in rainforest flies points to climate change survival
Science Current Events | Science News | Brightsurf.com
 

Evolution in rainforest flies points to climate change survival

July 29, 2014

Scientists believe some tropical species may be able to evolve and adapt to the effects of climate change.

The new findings published in the journal, Proceedings of the Royal Society B, suggests some sensitive rainforest-restricted species may survive climate change and avoid extinction. But only if the change is not too abrupt and dramatically beyond the conditions that a species currently experiences.

Previous research offered a bleak prospect for tropical species' adaptation to climate change, now researchers from Monash University believe the situation may not be quite so hopeless.

One of the lead researchers, Dr Belinda Van Heerwaarden said the impact of climate change on the world's biodiversity is largely unknown.

"Whilst many believe some species have the evolutionary potential to adapt no one really knows for sure, and there are fears that some could become extinct."

Dr Van Heerwaarden and Dr Carla M. Sgrò, from the Faculty of Science extended on an experiment from the 2000s in which tropical flies native to Australian rain forests called Drosophila birchii, were taken out of the damp rainforest and exposed to very dry conditions, mimicking the effects of potential climate change.

In the original experiment the flies died within hours and despite rescuing those that survived longest and allowing them to breed for over 50 generations, the flies were no more resistant, suggesting they didn't have the evolutionary capacity to survive.

In Dr Van Heerwaarden and Dr Sgrò's version they changed the conditions from 10 per cent to 35 per cent humidity.

"The first experiment tested whether the flies could survive in 10 per cent relative humidity. That's an extreme level that's well beyond the changes projected for the wet tropics under climate change scenarios over the next 30 years."

"In our test we decreased the humidity to 35 per cent, which is much more relevant to predictions of how dry the environment will become in the next 30 to 50 years. We discovered that when you change the environment, you get a totally different answer," Dr Van Heerwaarden said.

Whilst on average most of the flies died after just 12 hours, some survived a little longer than others. By comparing different families of flies, the researchers discovered the difference in the flies' resistance is influenced by their genes.

To test this theory the longest-living flies were rescued and allowed to breed. After just five generations, one species evolved to survive 23 per cent longer in 35 per cent humidity.

As well as looking at the potential impact of climate change, the research also highlights the importance of genetic diversity within species.

Dr Sgrò said this finding suggests there is genetic variation present in these flies, which means they can evolve in response to climate change.

"Tropical species make up the vast majority of the world's biodiversity and climactic models predict these will be most vulnerable to climate change. However these models do not consider the extent to which evolutionary response may buffer the negative impacts of climate change."

"Our research indicates that the genes that help flies temporarily survive extreme dryness are not the same as those that help them resist more moderate conditions. The second set of genes are the ones that enable these flies to adapt," she said.

"We have much work to do but this experiment gives us hope that some tropical species have the capacity to survive climate change," said Dr Sgrò.

The results mean that other species thought to be at serious risk might have some hope of persisting a little longer under climate change than previously thought.

The next phase of the research study will see Dr Van Heerwaarden and Dr Carla M. Sgrò investigate whether the climactic stress tolerated by the tropical flies extends to other species.

Monash University


Related Climate Change Current Events and Climate Change News Articles


UM researcher embarks on field campaign to study effects of smoke on Earth's climate
A scientist at the University of Miami (UM) Rosenstiel School of Marine and Atmospheric Science is leading an upcoming international research campaign to study a significant contributor to regional climate warming - smoke.

Shifting bird distribution indicates a changing Arctic
Shifts in the distribution of Spectacled Eiders, a predatory bird at the top of the Bering Sea's benthic food web, indicate possible changes in the Arctic's marine ecosystem, according to new research in The Condor: Ornithological Applications.

Arctic Ocean methane does not reach the atmosphere
250 methane flares release the climate gas methane from the seabed and into the Arctic Ocean.

Expert urges voluntary family planning to mitigate climate change
With climate change already close to an irreversible tipping point, urgent action is needed to reduce not only our mean (carbon) footprints but also the "number of feet" - that is, the growing population either already creating large footprints or aspiring to do so, argues a leading physician and environmentalist in The BMJ today.

Organism responsible for paralytic shellfish poisoning may affect fisheries
The toxic dinoflagellate, Alexandrium fundyense, is a photosynthetic plankton--a microscopic organism floating in the ocean, unable to swim against a current.

Deep, old water explains why Antarctic Ocean hasn't warmed
The waters surrounding Antarctica may be one of the last places to experience human-driven climate change.

Remains of bizarre group of extinct snail-eating Australian marsupials discovered
Fossil remains of a previously unknown family of carnivorous Australian marsupials that lived 15 million years ago have been discovered at the Riversleigh World Heritage Fossil Site in north-western Queensland by a UNSW Australia-led team of researchers.

Mars is emerging from an ice age
Radar measurements of Mars' polar ice caps reveal that the mostly dry, dusty planet is emerging from an ice age, following multiple rounds of climate change.

SwRI scientists discover evidence of ice age at martian north pole
Using radar data collected by NASA's Mars Reconnaissance Orbiter, a Southwest Research Institute-led team found evidence of an ice age recorded in the polar deposits of Mars.

Underwater grass beds have ability to protect and maintain their own health
An expansive bed of underwater grass at the mouth of the Susquehanna River has proven it is able to "take a licking and keep on ticking."
More Climate Change Current Events and Climate Change News Articles

Climate Change: What Everyone Needs to Know®

Climate Change: What Everyone Needs to Know®
by Joseph Romm (Author)


Climate change will have a bigger impact on humanity than the Internet has had. The last decade's spate of superstorms, wildfires, heat waves, and droughts has accelerated the public discourse on this topic and lent credence to climatologist Lonnie Thomson's 2010 statement that climate change "represents a clear and present danger to civilization." In June 2015, the Pope declared that action on climate change is a moral issue.

This book offers the most up-to-date examination of climate change's foundational science, its implications for our future, and the core clean energy solutions. Alongside detailed but highly accessible descriptions of what is causing climate change, this entry in the What Everyone Needs to Know series answers questions about the practical implications of this...

This Changes Everything: Capitalism vs. The Climate

This Changes Everything: Capitalism vs. The Climate
by Naomi Klein (Author)


The most important book yet from the author of the international bestseller The Shock Doctrine, a brilliant explanation of why the climate crisis challenges us to abandon the core “free market” ideology of our time, restructure the global economy, and remake our political systems.

In short, either we embrace radical change ourselves or radical changes will be visited upon our physical world. The status quo is no longer an option.

In This Changes Everything Naomi Klein argues that climate change isn’t just another issue to be neatly filed between taxes and health care. It’s an alarm that calls us to fix an economic system that is already failing us in many ways. Klein meticulously builds the case for how massively reducing our greenhouse emissions is our best chance...

The Sixth Extinction: An Unnatural History

The Sixth Extinction: An Unnatural History
by Elizabeth Kolbert (Author)


WINNER OF THE PULITZER PRIZE
ONE OF THE NEW YORK TIMES BOOK REVIEW'S 10 BEST BOOKS OF THE YEAR
A NEW YORK TIMES BESTSELLER
A NATIONAL BOOK CRITICS CIRCLE AWARD FINALISTA major book about the future of the world, blending intellectual and natural history and field reporting into a powerful account of the mass extinction unfolding before our eyes

Over the last half-billion years, there have been Five mass extinctions, when the diversity of life on earth suddenly and dramatically contracted. Scientists around the world are currently monitoring the sixth extinction, predicted to be the most devastating extinction event since the asteroid impact that wiped out the dinosaurs. This time around, the cataclysm is us. In prose that is at once frank, entertaining, and deeply...

A Global Warming Primer: Answering Your Questions About The Science, The Consequences, and The Solutions

A Global Warming Primer: Answering Your Questions About The Science, The Consequences, and The Solutions
by Jeffrey Bennett (Author)


Winner:
2017 NSTA, Outstanding Science Trade Books
2017 Children's Book Council, Best STEM Books

Is human-induced global warming a real threat to our future? Most people will express an opinion on this question, but relatively few can back their opinions with solid evidence. Many times we’ve even heard pundits say “I am not a scientist” to avoid the issue altogether. But the truth is, the basic science is not that difficult. Using a question and answer format, this book will help readers achieve three major goals: To see that anyone can understand the basic science of global warming;  To understand the arguments about this issue made by skeptics, so that readers will be able to decide for themselves what to believe; To understand why, despite the “gloom and...

Climate Change: The Facts

Climate Change: The Facts
by J.Abbot (Author), J.S. Armstrong (Author), A.Bolt (Author), R.Carter (Author), R.Darwall (Author), J.Delingpole (Author), C.Essex (Author), S.Franks (Author), K.Green (Author), D.Laframboise (Author), N.Lawson (Author), B.Lewin (Author), R.Lindzen (Author), J.Marohasy (Author), R.McKitrick (Author), P.Michaels (Author), A.Moran (Author), J.Nova (Author), G.Paltridge (Author), I.Plimer (Author), W.Soon (Author), M.Steyn (Author), A.Watts (Author), Alan Moran (Editor)


Tirelessly promoted by princes, presidents, actors and activists, "climate change" has become a dominant theme of global politics. But what's really going on as the "pause" in global warming prepares to enter its third decade? In this new anthology, leading scientists and commentators from the United States, the United Kingdom, Canada and Australia consider the climate from every angle - the science, the policy and the politics.

Climate change

Climate change
by The Open University


This 5-hour free course laid out the case for an end to the human reliance on fossil fuels and looked at some of the ways this might be possible.

Global Warming-Alarmists, Skeptics and Deniers: A Geoscientist Looks at the Science of Climate Change

Global Warming-Alarmists, Skeptics and Deniers: A Geoscientist Looks at the Science of Climate Change
by G. Dedrick Robinson (Author), Gene D. Robinson III (Author)


Global Warming-Alarmists, Skeptics & Deniers: A Geoscientist looks at the Science of Climate Change, brings a unique geological perspective to this politically charged issue, a perspective that has been ignored far too long. Written by a father-son team of geoscientist and attorney, it is the concise guide to the global warming controversy that has been long needed. As a university professor and research geologist for thirty years, Dr. Robinson knows that geological science is essential for placing the global warming controversy in proper prospective. One cannot hope to understand how humans might be causing climate change without an understanding of the magnitude and speed natural processed are capable of when it comes to climate change. Earth history is the only yardstick we have to...

Merchants of Doubt: How a Handful of Scientists Obscured the Truth on Issues from Tobacco Smoke to Global Warming

Merchants of Doubt: How a Handful of Scientists Obscured the Truth on Issues from Tobacco Smoke to Global Warming
by Naomi Oreskes (Author), Erik M. Conway (Author)


"Merchants of Doubt should finally put to rest the question of whether the science of climate change is settled. It is, and we ignore this message at our peril."-Elizabeth Kolbert "Brilliantly reported andwritten with brutal clarity."-Huffington Post Now a powerful documentary from the acclaimed director of Food Inc., Merchants of Doubt was one of the most talked-about climate change books of recent years, for reasons easy to understand: It tells the controversial story of how a loose-knit group of high-level scientists and scientific advisers, with deep connections in politics and industry, ran effective campaigns to mislead the public and deny well-established scientific knowledge over four decades. The same individuals who claim the science of global warming is "not settled" have also...

Don't Even Think About It: Why Our Brains Are Wired to Ignore Climate Change

Don't Even Think About It: Why Our Brains Are Wired to Ignore Climate Change
by George Marshall (Author)


Most of us recognize that climate change is real yet we do nothing to stop it. What is the psychological mechanism that allows us to know something is true but act as if it is not? George Marshall's search for the answers brings him face to face with Nobel Prize-winning psychologists and Texas Tea Party activists; the world's leading climate scientists and those who denounce them; liberal environmentalists and conservative evangelicals. What he discovers is that our values, assumptions, and prejudices can take on lives of their own, gaining authority as they are shared, dividing people in their wake.With engaging stories and drawing on years of his own research, Marshall argues that the answers do not lie in the things that make us different, but rather in what we share: how our human...

Field Notes from a Catastrophe: Man, Nature, and Climate Change

Field Notes from a Catastrophe: Man, Nature, and Climate Change
by Elizabeth Kolbert (Author)


Elizabeth Kolbert's environmental classic Field Notes from a Catastrophe first developed out of a groundbreaking, National Magazine Award-winning three-part series in The New Yorker. She expanded it into a still-concise yet richly researched and damning book about climate change: a primer on the greatest challenge facing the world today. But in the years since, the story has continued to develop; the situation has become more dire, even as our understanding grows. Now, Kolbert returns to the defining book of her career. She'll add a chapter bringing things up-to-date on the existing text, plus she'll add three new chapters--on ocean acidification, the tar sands, and a Danish town that's gone carbon neutral--making it, again, a must-read for our moment.

© 2017 BrightSurf.com

Eco-coloring and activity books

This packet of books for youth contains 3 coloring and activity books: (1)COLORS OF HEALTH ....(2) DO and LEARN ECO-FUN BOOK....and (3) AMAZING ANCESTORS. There are many pages of fun activities and coloring pages which are also educational.

RFP's, Proposals, and Contracts for Web Designers and Agencies

This full 31 video course you can learn how to increase you income, land more clients, and protect yourself with contracts. 15 bonus down-loadable documents included.

server hosting cell phone accessory discount electronic laptop computer tablet computer game bluetooth monitor headset hard drive

Site Map

Site Map 0  Site Map 1  Site Map 2  Site Map 3  Site Map 4  Site Map 5  Site Map 6  Site Map 7  Site Map 8  Site Map 9  Site Map 10  Site Map 11  Site Map 12  Site Map 13  Site Map 14  Site Map 15  Site Map 16  Site Map 17  Site Map 18  Site Map 19  Site Map 20  Site Map 21  Site Map 22  Site Map 23  Site Map 24  Site Map 25  Site Map 26  Site Map 27  Site Map 28  Site Map 29  Site Map 30  Site Map 31  Site Map 32  Site Map 33  Site Map 34  Site Map 35  Site Map 36  Site Map 37  Site Map 38  Site Map 39  Site Map 40  Site Map 41  Site Map 42  Site Map 43  Site Map 44  Site Map 45  Site Map 46  Site Map 47  Site Map 48  Site Map 49  Site Map 50  Site Map 51  Site Map 52  Site Map 53  Site Map 54  Site Map 55  Site Map 56  Site Map 57  Site Map 58  Site Map 59  Site Map 60  Site Map 61  Site Map 62  Site Map 63  Site Map 64  Site Map 65  Site Map 66  Site Map 67  Site Map 68  Site Map 69  Site Map 70  Site Map 71  Site Map 72  Site Map 73  Site Map 74  Site Map 75  Site Map 76  Site Map 77  Site Map 78  Site Map 79  Site Map 80  Site Map 81  Site Map 82  Site Map 83  Site Map 84  Site Map 85  Site Map 86  Site Map 87  Site Map 88  Site Map 89  Site Map 90  Site Map 91  Site Map 92  Site Map 93  Site Map 94  Site Map 95  Site Map 96  Site Map 97  Site Map 98  Site Map 99  Site Map 100  Site Map 101  Site Map 102  Site Map 103  Site Map 104  Site Map 105  Site Map 106  Site Map 107  Site Map 108  Site Map 109  Site Map 110  Site Map 111  Site Map 112  Site Map 113  Site Map 114  Site Map 115  Site Map 116  Site Map 117  Site Map 118  Site Map 119  Site Map 120  Site Map 121  Site Map 122  Site Map 123  Site Map 124  Site Map 125  Site Map 126  Site Map 127  Site Map 128  Site Map 129  Site Map 130  Site Map 131  Site Map 132  Site Map 133  Site Map 134  Site Map 135  Site Map 136  Site Map 137  Site Map 138  Site Map 139  Site Map 140  Site Map 141  Site Map 142  Site Map 143  Site Map 144  Site Map 145  Site Map 146  Site Map 147  Site Map 148  Site Map 149  Site Map 150  Site Map 151  Site Map 152  Site Map 153  Site Map 154  Site Map 155  Site Map 156  Site Map 157  Site Map 158  Site Map 159  Site Map 160  Site Map 161  Site Map 162  Site Map 163  Site Map 164  Site Map 165  Site Map 166  Site Map 167  Site Map 168  Site Map 169  Site Map 170  Site Map 171  Site Map 172  Site Map 173  Site Map 174  Site Map 175  Site Map 176  Site Map 177  Site Map 178  Site Map 179  Site Map 180  Site Map 181  Site Map 182  Site Map 183  Site Map 184  Site Map 185  Site Map 186  Site Map 187