Dataset

TPWD HARC Texas Coastal Fisheries Aransas Bay Trawl

OBIS USA Open in mapper Explore occurrences

The Texas Parks and Wildlife Department (TPWD) utilizes several sampling gears for fisheries-independent monitoring of finfish and shellfish communities. They include bag seines, trawls, gill nets and oyster dredges. TPWD uses multiple gears in a random sampling protocol, and they identify (to the lowest taxonomic unit possible) and count everything that they collect. This dataset contains bay trawl data collected for the Aransas bay system in Texas from 1982 to 2008. Collected data also included spatial and temporal information describing the sample location and time, collection gear information, hydrological data (e.g. dissolved oxygen, water temperature, and salinity), weather conditions, species caught, and number of each species captured. Houston Advanced Research Center (HARC) calculated the relative abundance data, calculated as the catch of a particular species in a sample divided by the total number of animals captured in that sample. Absence data was recorded for species on the TPWD species sampling lists that were not captured during sampling.

Published: August 25, 2021 at 15:17

URL: https://ipt-obis.gbif.us/resource?r=tpwd_harc_texasaransasbay_trawl_20150130

50,430
occurrence records
58
taxa
56
species

Taxa

Missing and invalid fields

Field Missing Invalid
maximumDepthInMeters 30
0.1%
minimumDepthInMeters 74
0.1%
occurrenceStatus 50,430
100.0%
scientificNameID 50,430
100.0%

Quality flags

The OBIS data quality flags are documented at https://github.com/iobis/obis-qc.

Flag Dropped Records
ON_LAND 49,655
98.5%
MIN_DEPTH_EXCEEDS_MAX 15,938
31.6%
NO_DEPTH 30
0.1%
DEPTH_EXCEEDS_BATH 6
0.0%

Measurement types

DNA derived data