TPWD HARC Texas Coastal Fisheries Lower Laguna Madre Trawl

Latest version published by United States Geological Survey on Nov 21, 2017 United States Geological Survey

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 Lower Laguna Madre 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.

Data Records

The data in this occurrence resource has been published as a Darwin Core Archive (DwC-A), which is a standardized format for sharing biodiversity data as a set of one or more data tables. The core data table contains 19,443 records.

This IPT archives the data and thus serves as the data repository. The data and resource metadata are available for download in the downloads section. The versions table lists other versions of the resource that have been made publicly available and allows tracking changes made to the resource over time.


Download the latest version of this resource data as a Darwin Core Archive (DwC-A) or the resource metadata as EML or RTF:

Data as a DwC-A file download 19,443 records in English (629 KB) - Update frequency: unknown
Metadata as an EML file download in English (7 KB)
Metadata as an RTF file download in English (7 KB)


The table below shows only published versions of the resource that are publicly accessible.


Researchers should respect the following rights statement:

The publisher and rights holder of this work is United States Geological Survey. To the extent possible under law, the publisher has waived all rights to these data and has dedicated them to the Public Domain (CC0 1.0). Users may copy, modify, distribute and use the work, including for commercial purposes, without restriction.

GBIF Registration

This resource has been registered with GBIF, and assigned the following GBIF UUID: 99cac79f-b9bf-42e5-88bd-68c30a595437.  United States Geological Survey publishes this resource, and is itself registered in GBIF as a data publisher endorsed by U.S. Geological Survey.


Occurrence; Observation

External data

The resource data is also available in other formats



Who created the resource:

Lisa Gonzalez
Vice President and Chief Operating Officer
Houston Advanced Research Center 4800 Research Forest Dr 77381 The Woodlands TX US

Who can answer questions about the resource:

Lisa Gonzalez
Vice President and Chief Operating Officer
Houston Advanced Research Center 4800 Research Forest Dr 77381 The Woodlands TX US

Who filled in the metadata:

Abigail Benson
U.S. Geological Survey

Who else was associated with the resource:

Abigail Benson
U.S. Geological Survey

Geographic Coverage

Lower Laguna Madre System. All waters behind the surfline, including all saltwater bayous, from Rincon De San Jose to the south edge of South Bay and including the Arroyo Colorado, Brazos Santiago Pass, and Brownsville Ship Channel.

Bounding Coordinates South West [25.944, -97.847], North East [26.63, -96.681]

Additional Metadata

marine, harvest by iOBIS

Alternative Identifiers 99cac79f-b9bf-42e5-88bd-68c30a595437