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April 1, 1962

Temperature correction in conductivity measurements Temperature correction in conductivity measurements

Electrical conductivity has been widely used in freshwater research but usual methods employed by limnologists for converting measurements to conductance at a given temperature have not given uniformly accurate results. The temperature coefficient used to adjust conductivity of natural waters to a given temperature varies depending on the kinds and concentrations of electrolytes, the...

Authors

Stanford H. Smith

Ecosystems Mission Area, Great Lakes Science Center

January 1, 1962

Spring and summer temperatures of streams tributary to the south shore of Lake Superior, 1950-60 Spring and summer temperatures of streams tributary to the south shore of Lake Superior, 1950-60

No abstract available.

Authors

Bernard R. Smith

Ecosystems Mission Area, Great Lakes Science Center

January 1, 1962

Dissolved oxygen in Lake Erie, past and present Dissolved oxygen in Lake Erie, past and present

No abstract available.

Authors

John F. Carr

Ecosystems Mission Area, Great Lakes Science Center

January 1, 1962

The relative efficiency of nylon and cotton gill nets for taking lake trout in Lake Superior The relative efficiency of nylon and cotton gill nets for taking lake trout in Lake Superior

The change from cotton to nylon twine for gill nets in 1949–52 resulted in a sharp increase in the efficiency of the most important gear used for taking lake trout in Lake Superior, and, consequently, biased estimates of fishing intensity and abundance severely.From early May to the end of September 1961, short gangs (2000 or 4000 linear feet) of cotton and nylon nets were fished in...

Authors

Richard L. Pycha

Ecosystems Mission Area, Great Lakes Science Center

January 1, 1962

Lamprey control and research in the United States Lamprey control and research in the United States

No abstract available.

Authors

Leo F. Erkkila

Ecosystems Mission Area, Great Lakes Science Center

January 1, 1962

Light penetration in the Great Lakes Light penetration in the Great Lakes

No abstract available.

Authors

Alfred M. Beeton

Ecosystems Mission Area, Great Lakes Science Center

January 1, 1962

Microorganic constituents of water of the Great Lakes Microorganic constituents of water of the Great Lakes

No abstract available.

Authors

Lloyd L. Kempe, Stacy L. Daniels, Alfred M. Beeton

Ecosystems Mission Area, Great Lakes Science Center

January 1, 1962

Estimation of the brook and sea lamprey ammocoete populations of three streams Estimation of the brook and sea lamprey ammocoete populations of three streams

Marking experiments on three streams in the Upper Peninsula of Michigan yielded quantitative estimates of populations of larval and transforming lampreys. The estimates not only gave an idea as to the numbers of ammocetes in the streams, but also confirmed the judgments of abundance based on earlier surveys with electric-shocking equipment and provided valuable information on the...

Authors

Bernard R. Smith, Alberton L. McLain

Ecosystems Mission Area, Great Lakes Science Center

January 1, 1962

Three portable feeders for metering chemical into streams for control of sea lamprey Three portable feeders for metering chemical into streams for control of sea lamprey

Abstract has not been submitted

Authors

Gaylord A. Anderson

Ecosystems Mission Area, Great Lakes Science Center

January 1, 1962

Use of mobile bioassay equipment in the chemical control of sea lamprey Use of mobile bioassay equipment in the chemical control of sea lamprey

No abstract available.

Authors

John H. Howell, William M. Marquette

Ecosystems Mission Area, Great Lakes Science Center

January 1, 1962

The occurrence of the longjaw cisco, Leucichthys alpenae, in Lake Erie The occurrence of the longjaw cisco, Leucichthys alpenae, in Lake Erie

The longjaw cisco, Leucichthys alpenae, is shown to be a species new to the Lake Erie fauna. The taxonomic work on Lake Erie ciscoes is reviewed. Thirty three specimens of L. alpenae taken in 1946, 1947 and 1957 are compared morphometrically with Leucichthys artedi of Lake Erie, the only other cisco species in the lake. L. alpenae has a longer and deeper head, longer maxillary and fewer...

Authors

W. B. Scott, Stanford H. Smith

Ecosystems Mission Area, Great Lakes Science Center

January 1, 1962

An instance of upwelling along the east shore of Lake Michigan An instance of upwelling along the east shore of Lake Michigan

No abstract available.

Authors

James W. Moffett

Ecosystems Mission Area, Great Lakes Science Center