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No-fishing zones help endangered penguins

Tue, 16 Jan 2018 22:25:17 EST ~ Small no-fishing zones around colonies of African penguins can help this struggling species, new research shows. Find out more...

Drones confirm importance of Costa Rican waters for sea turtles

Tue, 16 Jan 2018 15:12:59 EST ~ A new drone-enabled population survey -- the first ever on sea turtles -- shows that larger-than-anticipated numbers of turtles aggregate in waters off Costa Rica's Ostional National Wildlife Refuge. Scientists estimate turtle densities may reach up to 2,086 animals per square kilometer. The study underscores the importance of the Ostional habitat; it also confirms that drones are a reliable tool for surveying sea turtle abundance. Find out more...

Surfers three times more likely to have antibiotic-resistant bacteria in guts

Mon, 15 Jan 2018 09:42:43 EST ~ Scientists compared fecal samples from surfers and non-surfers to assess whether the surfers' guts contained E. coli bacteria that were able to grow in the presence of the antibiotic cefotaxime. Cefotaxime has previously been prescribed to kill off these bacteria, but some have acquired genes that enable them to survive this treatment. The study found that 13 of 143 (9 percent) of surfers were colonized by these resistant bacteria, compared to just four of 130 (3 percent) of non-surfers swabbed. Find out more...

Robots aid better understanding of phytoplankton blooms

Mon, 15 Jan 2018 09:42:31 EST ~ Phytoplankton blooms are one of the most important factors contributing to the efficiency of the carbon pump in the North Atlantic Ocean. To better understand this phenomenon, researchers have developed a new class of robots able to collect data in the ocean throughout the year. Using these unparalleled data, the researchers have identified the starting point for the explosive spring phytoplankton bloom. Find out more...

New application for acoustics helps estimate marine life populations

Mon, 15 Jan 2018 09:42:25 EST ~ Researchers have for the first time have used hydroacoustics as a method for comparing the abundance of fishes within and outside marine protected areas (MPAs). Find out more...

Tagged tiger shark proving unstoppable

Thu, 11 Jan 2018 16:30:13 EST ~ For more than a decade, researchers have been tagging and tracking sharks in order to study their migratory patterns and more. One tiger shark - Andy - is now the longest-ever tracked tiger shark, providing years worth of data for researchers. Find out more...

Rising CO2 is causing trouble in freshwaters too, study suggests

Thu, 11 Jan 2018 14:17:36 EST ~ As carbon dioxide (CO2) levels in the atmosphere rise, more CO2 gets absorbed into seawater. As a result, the world's oceans have grown more acidic over time, causing a wide range of well-documented problems for marine animals and ecosystems. Now, researchers present some of the first evidence that similar things are happening in freshwaters too. Find out more...

Rising temperatures turning major sea turtle population female

Thu, 11 Jan 2018 10:14:08 EST ~ Scientists have used a new research approach to show that warming temperatures are turning one of the world's largest sea turtle colonies almost entirely female, running the risk that the colony cannot sustain itself in coming decades, newly published research concludes. Find out more...

Turkey-sized dinosaur from Australia preserved in an ancient log-jam

Thu, 11 Jan 2018 08:49:46 EST ~ The partial skeleton of a new species of turkey-sized herbivorous dinosaur has been discovered in 113-million-year-old rocks in southeastern Australia. The fossilized tail and foot bones give new insight into the diversity of small, bipedal herbivorous dinosaurs called ornithopods that roamed the great rift valley that once existed between Australia and Antarctica. Find out more...

Dramatic decline in genetic diversity of Northwest salmon

Wed, 10 Jan 2018 14:13:12 EST ~ Columbia River Chinook salmon have lost as much as two-thirds of their genetic diversity, researchers have found. The researchers reached this conclusion after extracting DNA from scores of bone samples -- some harvested as many as 7,000 years ago -- and comparing them to the DNA of Chinook currently swimming in the Snake and Columbia rivers. The work is 'the first direct measure of reduced genetic diversity for Chinook salmon from the ancient to the contemporary period.' Find out more...