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

Dates

Publication Date
Start Date
1958-08-10
End Date
2018-12-04

Citation

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, https://doi.org/10.5066/F75M63X0.

Summary

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. [...]

Contacts

Attached Files

Click on title to download individual files attached to this item.

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

Purpose

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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