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Fish Distribution Influenced by Fishing and Climate
December 22, 2014 01:31 PM - NOAA Newsroom

Scientists studying the distribution of four commercial and recreational fish stocks in Northeast U.S. waters have found that climate change can have major impacts on the distribution of fish, but the effects of fishing can be just as important and occur on a more immediate time scale. The four species studied– black sea bass, scup, summer flounder, and southern New England/Mid-Atlantic Bight winter flounder – have varied in abundance and have experienced heavy fishing pressure at times over the past 40 years. 

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New study analyzes sound sensitivity of marine invertebrates
December 22, 2014 02:57 PM - Woods Hole Oceanographic Institution

Noise pollution in the ocean is increasingly recognized as harmful to marine mammals, affecting their ability to communicate, find mates, and hunt for food. But what impact does noise have on invertebrates -- a critical segment of the food web? Very few studies have attempted to answer that question. The harder question to answer might be 'How do you measure hearing in ocean invertebrates'? A new study by researchers at Woods Hole Oceanographic Institution and their colleagues examined behavioral responses to sound by cuttlefish, a type of shell-less mollusk related to squid and octopi. The study is the first to identify the acoustic range and minimum sound sensitivity in these animals. Their findings, published in the Journal of Experimental Biology, can help decision makers and environmental managers better understand the impacts of noise in the ocean.

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SPOTLIGHT

Study shows the effect that growing beaver population is having on habitat and methane gas emissions

AlphaGalileo

There are consequences of the successful efforts worldwide to save beavers from extinction. Along with the strong increase in their population over the past 100 years, these furry aquatic rodents have built many more ponds, establishing vital aquatic habitat. In doing so, however, they have created conditions for climate changing methane gas to be generated in this shallow standing water, and the gas is subsequently released into the atmosphere. In fact, 200 times more of this greenhouse gas is released from beaver ponds today than was the case around the year 1900, estimates Colin J. Whitfield of the University of Saskatchewan in Canada. He led a study in Springer's journal AMBIO² about the effect that the growth in beaver numbers in Eurasia and the Americas could be having on methane emissions.

The fur trade of the sixteenth to nineteenth centuries nearly led to the extinction of beaver populations worldwide. After trapping was limited and conservation efforts led to the re-introduction of these animals into their natural ranges, the number of North American (Castor canadensis) and Eurasian (Castor fiber) beavers grew. The North American beaver has also been introduced to Eurasia and South America (specifically the archipelago of Tierra del Fuego); establishment of these populations has, in effect, created an anthropogenic greenhouse gas source in these landscapes.

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The True Cost of Meat

December 22nd, 2014
Eating meat is expensive, but the cost isn’t limited to the price you pay at the store. Did you know that eating meat also contributes to greenhouse gas emissions, soil erosion and water overuse? Read on to learn more about the true cost of meat!
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Can Recycling Increase Your Attractiveness?

December 18th, 2014
Who knew that recycling could make people consider you more attractive? Usually when I’m at a restaurant or and at party and ask “is there somewhere that this can be recycled?” the response I get is “Are you serious? Relax.” but according to the results of a poll by PepsiCo I may be hanging around […]
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9 Cleaning Guides to Keep Your Home Green

December 16th, 2014
Cleaning with natural, eco-friendly alternatives are not only easy, but are cheap. You can save your family and your house from chemical exposure and improve their health in the long run with these 9 tips!
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