Journal of Great Lakes Research

Journal of Great Lakes, Vol. 34, Number 2 Now Online

Mon, 23 Jun 2008 18:40:09 GMT

Take advantage of free online access to full content of this issue for 30 days.

Fat Lake Trout like Lots Of Fathoms!

Mon, 23 Jun 2008 18:46:43 GMT

Recent fish sampling efforts sent research teams out to explore the vast amounts of deep water in search of fish. As part of these efforts in 2006, the research team aboard the Michigan Department of Natural Resources' Research Vessel Judy ventured about 30 miles offshore of Munising into Lake Superior and for the first time found siscowet near the deepest recorded site in the Great Lakes.

Bird and Human E. coli are Found in Fish

Mon, 23 Jun 2008 18:47:37 GMT

The sources of E. coli contamination in public waters has been a major concern for public health, but the role fish play in the E. coli contamination of recreational waters is not well known. E. coli from fish in a Lake Superior harbor, near Duluth, MN, were compared to E. coli bacteria from bird and human sources to identify the origin of E. coli found in fish. Using DNA fingerprinting techniques, Canada geese, mallard ducks, and treated wastewater were the most likely sources of E. coli found in fish.

Sampling Baby Fish on a Budget

Mon, 23 Jun 2008 18:48:06 GMT

Scientists on Lake Superior are trying to discover why most year classes of cisco (a group of ecologically important cold water food fish for both Lake Trout and humans) are very small yet once in awhile some year classes can be huge. Studying the larval stage of cisco is critical for understanding why cisco populations behave in such a "boom and bust" manner.

Study of Historic Air Photos Analyzes Cattail Invasion of Lake Ontario Wetlands

Mon, 23 Jun 2008 18:49:10 GMT

The International Joint Commission is using results from a large U.S.-Canadian study to evaluate new regulation plans for the lake that might reduce environmental damages. As part of that study, plant communities in aerial photographs of 16 Lake Ontario wetlands were analyzed across five decades dating back to pre-regulation in the 1950s.

E.coli may survive in green algae mats

Mon, 23 Jun 2008 18:49:46 GMT

The green algae Cladophora has made a resurgence around the Great Lakes in recent years and recent research suggests that Cladophora may harbor very high levels of E.coli within stranded mats close to bathing beaches. While E.coli should indicate a recent fecal discharge, there is evidence that E.coli may preferentially survive and replicate in these Cladophora mats.