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Great Lakes Research Vessel Operations 1958-2018: Trawl. (ver. 3.0, April 2019)


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U.S. Geological Survey, Great Lakes Science Center, 2019, Great Lakes Research Vessel Operations 1958-2018: Trawl. (ver. 3.0, April 2019): U.S. Geological Survey data release,


All trawl data represented here expand upon vessel operations (OP table) data, all of which are collected by the United States Geological Survey, Great Lakes Science Center and its partners. The Trawl Tables contain data collected from the research vessel deploying various gear used for trawl data collection. The database uses sample_type to indicate the gear deployed. The tables relating to Trawl are: Bucket.csv, Prey_Length.csv, Prey_Total.csv, TR_Annulus.csv, TR_Catch.csv, TR_Fish.csv, TR_L.csv, TR_LF.csv, TR_LMMB_Fish_Prey.csv, TR_LMMB_Invert_Prey.csv, TR_OP.csv, TR_Prey.csv, TR_Sub.csv, sub_prey_total.csv, and sub_prey_length.csv Data Quality: Note that the following data release is a snapshot of the database at the time of release. [...]


Attached Files

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rvcat-diagram-TR-withRef9.pdf 111.14 KB application/pdf
BUCKET.csv 32.82 KB text/csv
PREY_LENGTH.csv 2.34 MB text/csv
PREY_TOTAL.csv 1.31 MB text/csv
SUB_PREY_LENGTH.csv 70.44 KB text/csv
SUB_PREY_TOTAL.csv 26.21 KB text/csv
TR_ANNULUS.csv 4.6 MB text/csv
TR_CATCH.csv 6.23 MB text/csv
TR_FISH.csv 35.05 MB text/csv
TR_L.csv 5.66 MB text/csv
TR_LF.csv 36.88 MB text/csv
tr_lmmb_fish_prey.csv 9.89 KB text/csv
tr_lmmb_invert_prey.csv 373 Bytes text/csv
TR_OP.csv 2.09 MB text/csv
TR_PREY.csv 857.76 KB text/csv
TR_SUB.csv 135.95 KB text/csv


These data were collected and used in connection with numerous research projects, reports to various organizations on Great Lakes' ecosystem health, and for longitudinal data about environmental conditions and species inhabiting the Great Lakes.

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