Category Archive: Sustainable Fisheries

Dec 31

Lake trout stocking

A fishy tale: In the 1800s, lake trout were abundant in Lake Superior. Then, in the early to mid 1900s… Hansen: “… populations began to decline rapidly.” That’s biologist Michael Hansen. He says overfishing and predatory invaders known as sea lampreys were to blame. By the time an effective way to control lampreys was discovered, …

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Permanent link to this article: http://www.currentcast.org/water-and-energy/lake-trout-stocking/

Dec 21

Bioacoustics in the Great Lakes

A “sound” strategy for learning about fish: Aaron Rice, of Cornell’s Bioacoustics Research Program, tracks fish populations and behavior. He does it using sound. Rice: “The advantage of using sound as a survey method is that with digital recording technology that’s available now you can take a hydrophone, connect it to a essentially waterproof computer …

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Permanent link to this article: http://www.currentcast.org/water-and-energy/bioacoustics-in-the-great-lakes/

Dec 19

Ciscoes: A Great Snack for Great Lakes Fish

A middle-of-the-food-web fish: Ciscoes were once abundant in the Great Lakes. But these native fish were depleted by overfishing, invasive species, and pollution. Ellen George, a grad student in the Cornell Department of Natural Resources, wants to see them come back. She says some of the invasive fish that replaced ciscoes in the food chain …

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Permanent link to this article: http://www.currentcast.org/sustainable-fisheries/ciscoes-a-great-snack-for-great-lakes-fish/

Dec 06

Fish Talk

Scientists listen in on a world of underwater sound. Listen up: When Aaron Rice eavesdrops on a conversation, he hears plenty of pops, purrs, clicks and grunts. As Research Associate at the Bioacoustics Research Program at Cornell University, he listens to fish. The sounds usually have something to do with aggression or reproduction – and …

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Permanent link to this article: http://www.currentcast.org/sustainable-fisheries/fish-talk/

Dec 04

A Fish Called Cisco

Lake herring are making a comeback in the Great Lakes. Listen up: Until the sixties, schools of slender silvery cisco swam the Great Lakes, feeding on zooplankton, and dodging predators. Fishermen called them ‘lake herring.’ “They were one of the most abundant species across the great lakes. And at one time they comprised the largest …

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Permanent link to this article: http://www.currentcast.org/sustainable-fisheries/a-fish-called-cisco/

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