Rutgers OW1 Bottom Trawl Survey - Catch Data

Fisheries Monitoring in Ocean Wind 01. Two seasonal pre-construction surveys. Twenty tows conducted in the lease area and twenty in the control area each season (160/year total). Tows conducted at three knots for 20 minutes. Trawl data will inform relative biomass (kg/tow) by species, size frequency by species, condition index (length-weight) by species, community assemblage, and gut content of a subset of species.

Schema file: models/datasets/rutgers/ow1-catch-schema.yaml

Data Fields (Slots)

DatasetMetadata Fields

Metadata describing the dataset as a whole, including provenance, institutional information, and project details.

Field	Type	Units	Description	ERDDAP Source
acknowledgement	string	-	Funding and acknowledgement information	`NC_GLOBAL.acknowledgement`
cdm_data_type	string	-	Climate and Forecast (CF) / COARDS data type	`NC_GLOBAL.cdm_data_type`
comment	string	-	General comments about the survey	`NC_GLOBAL.comment`
contributors	Contributor	-	List of people and organizations that contributed to the dataset	`NC_GLOBAL.contributor_name, NC_GLOBAL.contributor_role`
conventions	string	-	Metadata conventions followed by this dataset	`NC_GLOBAL.Conventions`
creator_email	string	-	Email address of the dataset creator	`NC_GLOBAL.creator_email`
creator_institution	string	-	Institution of the dataset creator	`NC_GLOBAL.creator_institution`
creator_name	string	-	Name of the dataset creator	`NC_GLOBAL.creator_name`
creator_type	string	-	Type of creator (e.g., person, group, organization)	`NC_GLOBAL.creator_type`
creator_url	string	-	URL for the creator or creator's institution	`NC_GLOBAL.creator_url`
geospatial_bounds_crs	string	-	Coordinate reference system for geospatial bounds	`NC_GLOBAL.geospatial_bounds_crs`
geospatial_vertical_positive	string	-	Direction of positive vertical coordinates	`NC_GLOBAL.geospatial_vertical_positive`
dataset_id	string	-	Unique identifier for the dataset	`NC_GLOBAL.id`
info_url	string	-	URL for more information about the dataset or project	`NC_GLOBAL.infoUrl`
institution	string	-	Institution responsible for the dataset	`NC_GLOBAL.institution`
keywords	string	-	Keywords describing the dataset content	`NC_GLOBAL.keywords`
license	string	-	License or data use agreement for the dataset	`NC_GLOBAL.license`
platform_name	string	-	Name of the research vessel or platform used for data collection	`NC_GLOBAL.platform_name`
program	string	-	Research program under which data was collected	`NC_GLOBAL.program`
project	string	-	Specific project or projects associated with the dataset	`NC_GLOBAL.project`
publisher_email	string	-	Email address of the dataset publisher	`NC_GLOBAL.publisher_email`
publisher_institution	string	-	Institution of the dataset publisher	`NC_GLOBAL.publisher_institution`
publisher_name	string	-	Name of the dataset publisher	`NC_GLOBAL.publisher_name`
publisher_type	string	-	Type of publisher (e.g., person, group, organization)	`NC_GLOBAL.publisher_type`
source_url	string	-	Source URL for the data files	`NC_GLOBAL.sourceUrl`
standard_name_vocabulary	string	-	Vocabulary standard used for variable names	`NC_GLOBAL.standard_name_vocabulary`
summary	string	-	Summary description of the dataset	`NC_GLOBAL.summary`
dataset_title	string	-	Title of the dataset	`NC_GLOBAL.title`

Contributor Fields

A person or organization that contributed to the dataset.

Field	Type	Units	Description	ERDDAP Source
contributor_name	string	-	Name of the contributor	`NC_GLOBAL.contributor_name`
contributor_role	string	-	Role of the contributor in the project	`NC_GLOBAL.contributor_role`

TowRecord Fields

A record representing a single trawl tow/station event. ERDDAP dataset: bottom_trawl_survey_ow1_tows

Field	Type	Units	Description	ERDDAP Source
index	integer	-	Unique sequential identifier for each record	`index`
time	string	-	Date and time of the tow in ISO 8601 format	`time`
cruise	string	-	Unique identifier for the survey cruise	`cruise`
station	string	-	Station identifier. C/I prefix designates the type of station: Control (C) - open sand bottom without turbine placement, Impact (I) - OW1 Wind Farm lease area.	`station`
latitude	float	deg	Latitude coordinates entered at start of trawl	`latitude (start_latitude)`
end_latitude	float	deg	Latitude coordinates entered at end of trawl	`end_latitude`
longitude	float	deg	Longitude coordinates entered at start of trawl	`longitude (start_longitude)`
end_longitude	float	deg	Longitude coordinates entered at end of trawl	`end_longitude`

CatchRecord Fields

A record representing catch data from a single species (or species+size_class combination) collected during a bottom trawl survey tow/station. ERDDAP dataset: bottom_trawl_survey_ow1_catch

Field	Type	Units	Description	ERDDAP Source
index	integer	-	Unique sequential identifier for each record	`index`
cruise	string	-	Unique identifier for the survey cruise	`cruise`
station	string	-	Station identifier. C/I prefix designates the type of station: Control (C) - open sand bottom without turbine placement, Impact (I) - OW1 Wind Farm lease area.	`station`
species_common_name	string	-	Common name of the species caught	`species_common_name`
size_class	string	-	Size class designation when distinct/noticeable size differences exist within the same species in a catch. Used to avoid biasing randomly selected length measurements.	`size_class`
total_weight	float	kg	Total weight in kilograms of measured individuals for this species/size_class combination.	`total_weight`
total_count	integer	-	Total count of individuals in this species/size_class combination	`total_count`
length_type	LengthTypeEnum	-	Type of length measurement used for this species	`length_type`
mean_length	float	mm	Mean length of measured individuals	`mean_length`
std_length	float	mm	Standard deviation of length measurements	`std_length`

SpeciesCode Fields

Taxonomic lookup table linking common names to scientific names and ITIS TSNs. ERDDAP dataset: species_id_codes

Field	Type	Units	Description	ERDDAP Source
speciesID	float	-	Numeric identifier for species based on NOAA National Marine Fisheries Service codes	`speciesID`
species_scientific_name	string	-	Scientific name of the species	`species_scientific_name`
ITIS_tsn	float	-	Integrated Taxonomic Information System (ITIS) taxonomic serial number	`ITIS_tsn`
species_common_name	string	-	Common name of the species caught	`species_common_name`

Enumerations

LengthTypeEnum

Standardized length measurement types used in trawl surveys

Code	Meaning	Description
FL	FL	Fork Length
TL	TL	Total Length
DW	DW	Disk Width (for large stingrays)
CW	CW	Carapace Width (for crabs, horseshoe crabs, and species with a carapace)
ML	ML	Mantle Length (for squid, measuring just the length of the mantle tissue)
SW	SW	Shell Width (for general bivalves and clams)
SH	SH	Shell Height (for scallops)

Data Classes

The schema organizes fields into classes:

DatasetMetadata

Metadata describing the dataset as a whole, including provenance, institutional information, and project details.

Key fields: acknowledgement, cdm_data_type, comment, contributors, conventions

Contributor

A person or organization that contributed to the dataset.

Key fields: contributor_name, contributor_role

TowRecord

A record representing a single trawl tow/station event. ERDDAP dataset: bottom_trawl_survey_ow1_tows

Key fields: index, time, cruise, station, latitude

CatchRecord

A record representing catch data from a single species (or species+size_class combination) collected during a bottom trawl survey tow/station. ERDDAP dataset: bottom_trawl_survey_ow1_catch

Key fields: index, cruise, station, species_common_name, size_class

SpeciesCode

Taxonomic lookup table linking common names to scientific names and ITIS TSNs. ERDDAP dataset: species_id_codes

Key fields: speciesID, species_scientific_name, ITIS_tsn, species_common_name