News tagged with fish populations

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15,000 reasons to worry about invasive species

Biology / Ecology

created Nov 09, 2009 | popularity 5 / 5 (4) | comments 1

A day at the beach in Wisconsin's North Woods didn't used to go like this. Candy Dailey spent a Fourth of July holiday splashing with grandkids on the sandy shore of Lake Metonga when she felt a nasty sting on her foot.


You don't call, you don't write: Connectivity in marine fish populations

Biology / Ecology

created Mar 25, 2009 | popularity 5 / 5 (2) | comments 0

Children of baby boomers aren't the only ones who have taken to setting up home far from where their parents live. A new study published this week in the Proceedings of the National Academy of Sciences documents how larval ...


New technologies help scientists track fish species

New technologies help scientists track fish species

Biology / Ecology

created Mar 11, 2009 | popularity not rated yet | comments 0

(PhysOrg.com) -- New tracking and observing technologies are giving marine conservationists a fish-eye view of conditions, from overfishing to climate change, that are contributing to declining fish populations, ...


Quagga mussels are clogging Hoover Dam, colonizing lakes and rivers

Biology / Ecology

created Mar 02, 2009 | popularity 2.7 / 5 (3) | comments 1

It took some of America's best engineers, thousands of laborers and two years of around-the-clock concrete pouring to build the 726-foot-high Hoover Dam back in the 1930s. It took less time than that for the tiny, brainless ...


Researcher: Culling whales will not boost tropical fisheries

Researcher: Culling whales will not boost tropical fisheries

Space & Earth / Environment

created Feb 16, 2009 | popularity 3.7 / 5 (6) | comments 2

(PhysOrg.com) -- For decades there has been a controversy about whales eating fish in the tropics. The “whales eat fish” debate has been at the heart of policy decisions about the culling of whales and is ...


Conserving biodiversity or plundering genetic diversity? What is captive breeding doing to fish populations?

Biology /

created Dec 11, 2008 | popularity 4.5 / 5 (4) | comments 0

Human impacts on the environment have reduced populations of wild species to dangerously low levels. Nowhere is this more apparent than in worldwide fisheries, where thanks to overfishing and habitat destruction, countless ...


Fishy future written in the genes

Biology /

created Sep 30, 2008 | popularity 5 / 5 (1) | comments 0

The roadmap to the future of the gorgeously-decorated fish which throng Australia's coral reefs and help earn the nation $5 billion a year from tourism may well be written in their genes.