cdfw_dungeness-crab_sample

Grid DAP Data	Sub- set	Table DAP Data	Make A Graph	W M S	Source Data Files	Title	Sum- mary	FGDC, ISO, Metadata	Back- ground Info	RSS	E mail	Institution	Dataset ID
	set	data	graph			CDFW Dungeness Crab Megalopae — sampling events		F I M	background			CalCOFI	cdfw_dungeness-crab_sample

The Dataset's Variables and Attributes

Row Type	Variable Name	Attribute Name	Data Type	Value
attribute	NC_GLOBAL	cdm_data_type	String	Point
attribute	NC_GLOBAL	Conventions	String	COARDS, CF-1.10, ACDD-1.3
attribute	NC_GLOBAL	creator_name	String	CalCOFI
attribute	NC_GLOBAL	creator_url	String	https://calcofi.org
attribute	NC_GLOBAL	dataset_key	String	cdfw_dungeness-crab
attribute	NC_GLOBAL	db_release	String	v2026.08.14
attribute	NC_GLOBAL	featureType	String	Point
attribute	NC_GLOBAL	geospatial_lat_units	String	degrees_north
attribute	NC_GLOBAL	geospatial_lon_units	String	degrees_east
attribute	NC_GLOBAL	geospatial_vertical_positive	String	down
attribute	NC_GLOBAL	geospatial_vertical_units	String	m
attribute	NC_GLOBAL	infoUrl	String	https://calcofi.org
attribute	NC_GLOBAL	institution	String	CalCOFI
attribute	NC_GLOBAL	license	String	CC BY 4.0
attribute	NC_GLOBAL	references	String	https://calcofi.io/workflows/publish_to-erddap.html
attribute	NC_GLOBAL	sourceUrl	String	(source database)
attribute	NC_GLOBAL	standard_name_vocabulary	String	CF Standard Name Table v79
attribute	NC_GLOBAL	subsetVariables	String	cruise_key, site_key
attribute	NC_GLOBAL	summary	String	Dungeness crab (Metacarcinus magister) megalopae and larval decapods picked from archived CalCOFI oblique-tow plankton samples, examined for the California Department of Fish and Wildlife. Two efforts: a 2008-2014 time series of 310 sorted samples (A. Klemmedson, 2015) yielding 24 M. magister megalopae from 14 samples, and a 1949-2009 master sorting log of 2,011 archived samples (E. Jones, as of 2012-02-15) recording which had been examined. Spring cruises, CalBOBL oblique tows, lines < 80 / stations < 90. Counts are occurrence in the examined aliquot, not standardized density. Sorting was performed at the SIO Pelagic Invertebrate Collection, where the removed megalopae are archived in vials. One row per sampling event, with event-level effort widened into its own columns. Use this for effort and station counting — summing effort over the observation table double-counts it. Source: CalCOFI integrated database release v2026.08.14. Citation: Rogers-Bennett, L.; Jones, E.; Klemmedson, A. (2026). CDFW Dungeness Crab Megalopae from archived CalCOFI plankton samples (1949-2014). California Department of Fish and Wildlife, published through CalCOFI / Scripps Institution of Oceanography. .
attribute	NC_GLOBAL	title	String	CDFW Dungeness Crab Megalopae — sampling events
variable	sample_key		String
attribute	sample_key	ioos_category	String	Identifier
attribute	sample_key	long_name	String	Sample key
variable	sample_type		String
attribute	sample_type	ioos_category	String	Other
attribute	sample_type	long_name	String	Sample type
variable	parent_sample_key		String
attribute	parent_sample_key	ioos_category	String	Identifier
attribute	parent_sample_key	long_name	String	Parent sample key
variable	cruise_key		String
attribute	cruise_key	ioos_category	String	Identifier
attribute	cruise_key	long_name	String	Cruise key
variable	grid_key		String
attribute	grid_key	ioos_category	String	Identifier
attribute	grid_key	long_name	String	Grid key
variable	site_key		String
attribute	site_key	ioos_category	String	Identifier
attribute	site_key	long_name	String	Site key
variable	order_occ		int
attribute	order_occ	ioos_category	String	Other
attribute	order_occ	long_name	String	Order occ
variable	time		double
attribute	time	_CoordinateAxisType	String	Time
attribute	time	axis	String	T
attribute	time	ioos_category	String	Time
attribute	time	long_name	String	Time
attribute	time	standard_name	String	time
attribute	time	time_origin	String	01-JAN-1970 00:00:00
attribute	time	units	String	seconds since 1970-01-01T00:00:00Z
variable	latitude		double
attribute	latitude	_CoordinateAxisType	String	Lat
attribute	latitude	axis	String	Y
attribute	latitude	ioos_category	String	Location
attribute	latitude	long_name	String	Latitude
attribute	latitude	standard_name	String	latitude
attribute	latitude	units	String	degrees_north
variable	longitude		double
attribute	longitude	_CoordinateAxisType	String	Lon
attribute	longitude	axis	String	X
attribute	longitude	ioos_category	String	Location
attribute	longitude	long_name	String	Longitude
attribute	longitude	standard_name	String	longitude
attribute	longitude	units	String	degrees_east
variable	depth		double
attribute	depth	_CoordinateAxisType	String	Height
attribute	depth	_CoordinateZisPositive	String	down
attribute	depth	axis	String	Z
attribute	depth	ioos_category	String	Location
attribute	depth	long_name	String	Depth
attribute	depth	positive	String	down
attribute	depth	standard_name	String	depth
attribute	depth	units	String	m
variable	depth_max_m		double
attribute	depth_max_m	ioos_category	String	Location
attribute	depth_max_m	long_name	String	Depth max m
variable	tow_type		String
attribute	tow_type	ioos_category	String	Other
attribute	tow_type	long_name	String	Tow type
variable	prop_sorted		double
attribute	prop_sorted	ioos_category	String	Other
attribute	prop_sorted	long_name	String	Prop sorted
attribute	prop_sorted	units	String	dimensionless
variable	settled_volume_ml		double
attribute	settled_volume_ml	ioos_category	String	Other
attribute	settled_volume_ml	long_name	String	Settled volume ml
attribute	settled_volume_ml	units	String	ml

The information in the table above is also available in other file formats (.csv, .htmlTable, .itx, .json, .jsonlCSV1, .jsonlCSV, .jsonlKVP, .mat, .nc, .nccsv, .tsv, .xhtml) via a RESTful web service.