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Tag: "oceans" at biology news

New research finds surveys of larval-stage organisms effective for measuring marine biodiversity

... date, surveys of species diversity in the world's oceans have focused on adult organisms, but new research from Boston University has found that studying marine life in its larval phase with DNA barcoding is a valuable way to estimate biodiversity. Using this novel approach, Paul Barber, an assistant pro...

Polynesia explorers created worldwide web of scientific knowledge

...aves of daring expeditions into Polynesia, netting oceans of discoveries about its geography, flora and fauna and people. But they were more than simply courageous collectors of artifacts and statistics, says the author of a new book. These seafaring naturalists were the producers and mediators of a new "g...

UN review shows need to halt destructive fishing practice

...) reviewed measures to protect the vulnerable deep oceans of the high seas ?the 64 percent of ocean that lies beyond the national jurisdictions of any individual nation. Its review, ordered by the U.N. General Assembly in 2004, was based on reports from member states on steps taken to stop destructive high ...

Bacteria can help predict ocean change

Every creature has its place and role in the oceans ?even the smallest microbe, according to a new stu...ce for scientists attempting to understand how the oceans are changing, Fuhrman said. If bacteria behave predictably, they can be used to improve models for o...

How satellite tracking revealed the migratory mysteries of endangered Atlantic loggerhead turtles

... 2000 1.4 billion hooks were cast into the world's oceans through industrial fishing. It's thought that globally more than 200,000 loggerhead turtles were incidentally caught by fisherman scouring the waters for other species such as tuna and swordfish. Of these, tens of thousands are thought to die as a re...

Microbes hitchhike across Atlantic on desert dust

...able of dispersing large quantities of dust across oceans and continents. Since a gram of desert soil may contain as many as 1 billion bacterial cells, the presence of airborne dust should correspond with increased concentrations of airborne microorganisms," says Griffin Viable bacterial and fungal popula...

Creating a window on 'oceans in motion'

... create an effective global system of watching the oceans in motion," says Dr. O'Dor. Continental shelves a...al network." Changing the way the world sees the oceans Dr. O'Dor says the Ocean Tracking Network has agreed with local authorities to install an initial n...

Ocean acidification threatens cold-water coral ecosystems

...ropical coral reefs are threatened by both warming oceans and chemical changes in seawater caused by the bui...spitable for coral growth." The uptake of CO2 by oceans initiates a series of chemical reactions that increase acidity and decrease carbonate ion concentrat...

The critical importance of mangroves to ocean life

... the organic matter that is dissolved in the world oceans contains a similar amount of carbon as is stored in the skies as atmospheric carbon dioxide, an important greenhouse gas. Dissolved organic matter is an important player in the global carbon cycle that regulates atmospheric carbon dioxide and climate...

Scientist warns of threat to last stronghold of endangered turtle

...mately 1.4 billion hooks are cast into the world's oceans as part of industrial long-line fishing, with 37% of this fishing effort in the Atlantic. A major hotspot is found off West Africa, the focus of this study. With fishing yields decreasing in European seas the EU has struck up a number of agreement...

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

... distribution, and abundance of marine life in the oceans -- past, present, and future. The Gulf of Maine C...kton also are the species that give otherwise blue oceans (reflecting the color of the sky) their varying colors. Two of the microscopic plant species are ...

El Nino events affect whale breeding

...help us to understand processes in three connected oceans and are crucial to predicting the consequences of climate change on the whales." Southern right whales have been internationally protected since 1935. Their populations are showing signs of recovery, however, sea surface temperatures in parts of the...

Carbon cycle was already disrupted millions of years ago

...ave been well preserved because large parts of the oceans in the Jurassic and Cretaceous periods contained little (if any) oxygen. In sediment cores from various widely-separated areas Van Breugel found a 0.4% decrease in the 13C/12C ratio. This means that there were large-scale changes in the carbon cycl...

UC San Diego partners with Venter Institute to build marine microbial genomics cyberinfrastructure

...le genomic survey of microbial life in the world's oceans to produce the largest gene catalogue ever assembled. Sorcerer II is expected to more than double the number of protein sequences currently available in the National Institutes of Health's GenBank. The metagenomics database will include new sequences...

Hooked on fishing, and we're heading for the bottom, says scientist

...iomass, or weight, of fish caught from the world's oceans ?in the late 1980s. Since then, while there have been regional variations, the global fish haul has gradually sunk. "There's no doubt about this," says Dr. Pauly whose findings have been published in the world's leading peer-reviewed journals, inclu...

Marine mammals are on the frontline of failing ocean health

...p us tackle how to ensure the future health of the oceans - and ourselves." ...

Penguins okay with human visitors?for now

...l colonies along the southern Atlantic and Pacific oceans of South America. The penguins in the study live in the largest and most visited colony of Magellanic Penguins at Punta Tombo, Argentina. More than 70,000 people now visit annually. ...

Of mice, men, trees and the global carbon cycle

...ent of the carbon dioxide that's emitted, with the oceans and land surfaces each playing a major role. However, researchers have estimated that plant respiration releases five to 10 times as much carbon dioxide as fossil fuel burning. It's crucial, therefore, to know the amount of plant emissions more accu...

Oceans are 70 percent shark free

Marine scientists have discovered that the deepest oceans of the world would appear to be shark free. In a...3,000 metres. Sharks occur throughout the world's oceans and it had been hoped that as man explores deeper into the abyss and beyond throughout the largest e...

Free access to a digital library for developing countries

...ons in topics spanning the uncharted depths of the oceans to the outer reaches of our atmosphere. Springer, one of the founding publishers of OARE, has also made available works on environmental policy ?identifying how human behavior can be modified in the future to help minimize problems such as ground wat...

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