Space Industry and Business News  
WATER WORLD
Australia offers cash for Great Barrier Reef rescue ideas
by Staff Writers
Sydney (AFP) Jan 16, 2018


Most sea turtles now female in north Great Barrier Reef
Miami (AFP) Jan 8, 2018 - The vast majority of green sea turtles in the northern Great Barrier Reef are now female because of warmer temperatures due to climate change, which influences their sex during incubation, researchers said Monday.

The population of about 200,000 nesting females in the area along the east coast of Queensland, Australia, is one of the largest in the world, and could crash without more males, according to the report in the journal Current Biology.

The temperature at which eggs incubate determines the sex of the eggs. Warmer nests, which are dug into beaches, mean more females. Just a few degrees can mean the difference between a balanced and skewed sex ratio.

"With average global temperature predicted to increase 4.7 Fahrenheit (2.6 Celsius) by 2100, many sea turtle populations are in danger of high egg mortality and female-only offspring production," said the report.

Since figuring out the sex of buried eggs is too difficult, researchers decided to catch sea turtles and use genetic tests to find out where they'd come from.

They worked in an area where two different populations of green sea turtles (Chelonia mydas) forage -- one from a warmer area and the other from a cooler area.

After collecting 411 for analysis and release, they found a "moderate female sex bias" in turtles from beaches in the cooler, southern Great Barrier Reef, where about 65-69 percent were female.

But those in the warmer, northern Great Barrier Reef were "extremely female-biased," at 99.1 percent female among juveniles and 99.8 percent for those between juveniles and adults.

A total of 86.8 percent of adult-sized turtles from the area were female.

The trend of producing more females in warm areas has been ongoing for more than two decades, according to lead author Michael Jensen, from the US National Oceanic and Atmospheric Administration.

The study "provides a new understanding of what these populations are dealing with," he said.

"Knowing what the sex ratios in the adult breeding population are today and what they might look like five, 10 and 20 years from now when these young turtles grow up and become adults is going to be incredibly valuable."

Experts say there are strategies that could help, including erecting shady tents over beaches where turtles nest to keep them cool.

Green sea turtles are considered endangered throughout much of the world, under siege from coastal debris, loss of habitat, fishing nets and pollution, according to the International Union for Conservation of Nature.

Australia is calling on the world's top scientific minds to help save the Great Barrier Reef, offering hundreds of thousands of dollars to fund research into protecting the world's largest living structure.

The UNESCO World Heritage-listed reef is reeling from significant coral bleaching due to warming sea temperatures linked to climate change.

The 2,300-kilometre (1,400-mile) site is also under pressure from farming runoff, development and predatory crown-of-thorns starfish, with experts warning it could be suffering irreparable damage.

On Tuesday, the Australian government announced a Aus$2.0 million (US$1.6 million) funding pot available to people with bright ideas on how to save the reef.

"The scale of the problem is big and big thinking is needed, but it's important to remember that solutions can come from anywhere," said Environment Minister Josh Frydenberg.

He said the money would be available to the world's "greatest scientific minds, industry and business leaders, innovators and entrepreneurs".

"Solutions could focus on anything from reducing the exposure of corals to physical stressors, to boosting coral regeneration rates by cultivating reef-building coral larvae that attract other important marine species," Frydenberg added.

Up to Aus$250,000 is available for an initial feasibility stage, where researchers can test the technical and commercial viability of their proposals for up to six months.

More than one proposal is expected to be accepted at this stage, the government said.

A further Aus$1 million will then be made available to the best solutions at the proof of concept stage, where applicants develop and test their prototypes for up to 12 months.

Those that are successful will retain intellectual property rights and will be able to try to commercialise their innovation.

UNESCO's World Heritage Committee last year decided not to place the Barrier Reef on its list of sites "in danger" despite concern over the mass coral bleaching.

The 2017 bleaching marked the second-straight year that corals have been damaged by warming sea temperatures, an unprecedented occurrence that scientists said would give the invertebrate marine creatures insufficient time to fully recover.

Coral reefs make up less than one percent of Earth's marine environment, but are home to an estimated 25 percent of ocean life, acting as nurseries for many species of fish.

WATER WORLD
Sea levels off Dutch coast highest ever recorded in 2017
The Hague (AFP) Jan 13, 2018
Storm surges and tidal cycles caused record sea levels along the coast of the Netherlands last year, a Dutch marine institute has found. "The level has been rising gradually since 1890 by about 0.2 cm per year due to the melting of the ice and the warming up of the ocean," expert Fedor Baart, of the research organisation Deltares, said in a statement Friday. "That means that, as a rule, ... read more

Related Links
Water News - Science, Technology and Politics


Thanks for being here;
We need your help. The SpaceDaily news network continues to grow but revenues have never been harder to maintain.

With the rise of Ad Blockers, and Facebook - our traditional revenue sources via quality network advertising continues to decline. And unlike so many other news sites, we don't have a paywall - with those annoying usernames and passwords.

Our news coverage takes time and effort to publish 365 days a year.

If you find our news sites informative and useful then please consider becoming a regular supporter or for now make a one off contribution.
SpaceDaily Contributor
$5 Billed Once


credit card or paypal
SpaceDaily Monthly Supporter
$5 Billed Monthly


paypal only


Comment using your Disqus, Facebook, Google or Twitter login.

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle

WATER WORLD
Breaking bad metals with neutrons

EU unveils supercomputer plan to rival China

Russian scientists found excitons in nickel oxide for the first time

Pulsating dissolution found in crystals

WATER WORLD
Map of ionospheric disturbances to help improve radio network systems

Military defense market faces new challenges to acquiring SatCom platforms

Harris contracted by Army for radios for security force assistance brigades

Joint Hellas-Sat-4 and SaudiGeoSat-1 satellite ready for environmental tests

WATER WORLD
WATER WORLD
'Quantum radio' may aid communications and mapping indoors, underground and underwater

Raytheon to provide GPS-guided artillery shells

DARPA Subterranean Challenge Aims to Revolutionize Underground Capabilities

New satellite tracking of in-flight aircraft to improve safety

WATER WORLD
China orders 184 Airbus A320 planes: France

ASECNA to Deploy Space-Based ADS-B in Western and Central Africa

Firm to receive up to $70 mn if MH370 found in new hunt

Navy awards contract for V-22 Osprey repairs

WATER WORLD
New oxide and semiconductor combination builds new device potential

Nanostructure boosts stability of organic thin-film transistors

Quantum leap: computational approach launches new paradigm in electronic structure theory

Mysteries of a promising spintronic material revealed

WATER WORLD
Earth-i launches prototype of world's first full-colour, full-motion video satellite constellation

Frequent growth events and fast growth rates of fine aerosol particles in Beijing

NASA's Magnetospheric Multiscale Mission surpasses expectations flying to new heights in 2017

NASA Calculated Heavy Rainfall Leading to California Mudslides

WATER WORLD
Bulgaria's smoggy capital cleans up to host EU presidency

Campaigners slam UK plans on cutting plastic waste

Blue skies in China's capital spark joy, scepticism

UK plans to eliminate avoidable plastic waste by 2042









The content herein, unless otherwise known to be public domain, are Copyright 1995-2024 - Space Media Network. All websites are published in Australia and are solely subject to Australian law and governed by Fair Use principals for news reporting and research purposes. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA news reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. All articles labeled "by Staff Writers" include reports supplied to Space Media Network by industry news wires, PR agencies, corporate press officers and the like. Such articles are individually curated and edited by Space Media Network staff on the basis of the report's information value to our industry and professional readership. Advertising does not imply endorsement, agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. General Data Protection Regulation (GDPR) Statement Our advertisers use various cookies and the like to deliver the best ad banner available at one time. All network advertising suppliers have GDPR policies (Legitimate Interest) that conform with EU regulations for data collection. By using our websites you consent to cookie based advertising. If you do not agree with this then you must stop using the websites from May 25, 2018. Privacy Statement. Additional information can be found here at About Us.