ERDDAP > info > bcodmo_dataset_713188

Grid DAP Data	Sub- set	Table DAP Data	Make A Graph	W M S	Source Data Files	Acces- sible	Title	Sum- mary	FGDC, ISO, Metadata	Back- ground Info	RSS	E mail	Institution	Dataset ID
		data	graph		files	public	[Sex ratio averages by location] - Sex ratio averages by location in M. beryllina collected in Suisun Bay, California from 2012 to 2013. (Impacts of size-selective mortality on sex- changing fishes)		I   M	background			BCO-DMO	bcodmo_dataset_713188

The Dataset's Variables and Attributes

Row Type	Variable Name	Attribute Name	Data Type	Value
attribute	NC_GLOBAL	access_formats	String	.htmlTable,.csv,.json,.mat,.nc,.tsv
attribute	NC_GLOBAL	acquisition_description	String	Fish survey data\u00a0were collected by beach seine in the Suisun Bay region of the San Francisco Bay-Delta by Susanne Brander and Bryan Cole. Sampling methodology is fully described in Brander et al. (2013).
attribute	NC_GLOBAL	awards_0_award_nid	String	542383
attribute	NC_GLOBAL	awards_0_award_number	String	OCE-1435473
attribute	NC_GLOBAL	awards_0_data_url	String	http://www.nsf.gov/awardsearch/showAward?AWD_ID=1435473
attribute	NC_GLOBAL	awards_0_funder_name	String	NSF Division of Ocean Sciences
attribute	NC_GLOBAL	awards_0_funding_acronym	String	NSF OCE
attribute	NC_GLOBAL	awards_0_funding_source_nid	String	355
attribute	NC_GLOBAL	awards_0_program_manager	String	David L. Garrison
attribute	NC_GLOBAL	awards_0_program_manager_nid	String	50534
attribute	NC_GLOBAL	cdm_data_type	String	Other
attribute	NC_GLOBAL	comment	String	Fish survey summary data - averages by site J. W. White and S. Brander, PIs Version 4 August 2017
attribute	NC_GLOBAL	Conventions	String	COARDS, CF-1.6, ACDD-1.3
attribute	NC_GLOBAL	creator_email	String	info at bco-dmo.org
attribute	NC_GLOBAL	creator_name	String	BCO-DMO
attribute	NC_GLOBAL	creator_type	String	institution
attribute	NC_GLOBAL	creator_url	String	https://www.bco-dmo.org/
attribute	NC_GLOBAL	data_source	String	extract_data_as_tsv version 2.3 19 Dec 2019
attribute	NC_GLOBAL	date_created	String	2017-08-18T19:25:38Z
attribute	NC_GLOBAL	date_modified	String	2019-03-19T20:03:41Z
attribute	NC_GLOBAL	defaultDataQuery	String	&time<now
attribute	NC_GLOBAL	doi	String	10.1575/1912/bco-dmo.713188.1
attribute	NC_GLOBAL	infoUrl	String	https://www.bco-dmo.org/dataset/713188
attribute	NC_GLOBAL	institution	String	BCO-DMO
attribute	NC_GLOBAL	instruments_0_acronym	String	Purse-seine
attribute	NC_GLOBAL	instruments_0_dataset_instrument_description	String	Used to collect samples
attribute	NC_GLOBAL	instruments_0_dataset_instrument_nid	String	713196
attribute	NC_GLOBAL	instruments_0_description	String	A purse seine is a large wall of netting deployed in a circle around an entire school of fish. The seine has floats along the top line with a lead line of chain along the bottom. Once a school of fish is located, a skiff pulls the seine into the water as the vessel encircles the school with the net. A cable running along the bottom is then pulled in, "pursing" the net closed on the bottom, preventing fish from escaping by swimming downward. The catch is harvested by bringing the net alongside the vessel and brailing the fish aboard.
attribute	NC_GLOBAL	instruments_0_instrument_name	String	Purse-seine Fishing Gear
attribute	NC_GLOBAL	instruments_0_instrument_nid	String	675173
attribute	NC_GLOBAL	instruments_0_supplied_name	String	Beach seine
attribute	NC_GLOBAL	keywords	String	adults, bco, bco-dmo, biological, chemical, data, dataset, dmo, erddap, factor, lower, management, oceanography, office, preliminary, ratio, sex, Sex_ratio, site, total, Total_adults, upper, variance, variance_factor
attribute	NC_GLOBAL	license	String	https://www.bco-dmo.org/dataset/713188/license
attribute	NC_GLOBAL	metadata_source	String	https://www.bco-dmo.org/api/dataset/713188
attribute	NC_GLOBAL	param_mapping	String	{'713188': {}}
attribute	NC_GLOBAL	parameter_source	String	https://www.bco-dmo.org/mapserver/dataset/713188/parameters
attribute	NC_GLOBAL	people_0_affiliation	String	University of North Carolina - Wilmington
attribute	NC_GLOBAL	people_0_affiliation_acronym	String	UNC-Wilmington
attribute	NC_GLOBAL	people_0_person_name	String	J Wilson White
attribute	NC_GLOBAL	people_0_person_nid	String	516429
attribute	NC_GLOBAL	people_0_role	String	Principal Investigator
attribute	NC_GLOBAL	people_0_role_type	String	originator
attribute	NC_GLOBAL	people_1_affiliation	String	University of North Carolina - Wilmington
attribute	NC_GLOBAL	people_1_affiliation_acronym	String	UNC-Wilmington
attribute	NC_GLOBAL	people_1_person_name	String	Dr Susanne Brander
attribute	NC_GLOBAL	people_1_person_nid	String	712930
attribute	NC_GLOBAL	people_1_role	String	Co-Principal Investigator
attribute	NC_GLOBAL	people_1_role_type	String	originator
attribute	NC_GLOBAL	people_2_affiliation	String	University of North Carolina - Wilmington
attribute	NC_GLOBAL	people_2_affiliation_acronym	String	UNC-Wilmington
attribute	NC_GLOBAL	people_2_person_name	String	J Wilson White
attribute	NC_GLOBAL	people_2_person_nid	String	516429
attribute	NC_GLOBAL	people_2_role	String	Contact
attribute	NC_GLOBAL	people_2_role_type	String	related
attribute	NC_GLOBAL	people_3_affiliation	String	Woods Hole Oceanographic Institution
attribute	NC_GLOBAL	people_3_affiliation_acronym	String	WHOI BCO-DMO
attribute	NC_GLOBAL	people_3_person_name	String	Hannah Ake
attribute	NC_GLOBAL	people_3_person_nid	String	650173
attribute	NC_GLOBAL	people_3_role	String	BCO-DMO Data Manager
attribute	NC_GLOBAL	people_3_role_type	String	related
attribute	NC_GLOBAL	project	String	Goby size-selection
attribute	NC_GLOBAL	projects_0_acronym	String	Goby size-selection
attribute	NC_GLOBAL	projects_0_description	String	Description from NSF award abstract: Many marine fish species change sex during their lifetimes, and many of them are targets of commercial and recreational fishing. The timing of sex change in these animals is often related to body size, so populations typically consist of many small fish of the initial sex (usually female) and few large fish of the other sex (usually male). In nature, smaller fish are at a greater risk of mortality due to predation, but fishermen tend to seek larger fish. Thus fishing that targets larger individuals may skew sex ratios, removing enough of the larger sex to hinder reproduction. However, the extent to which size-selective mortality affects sex-changing fishes is poorly understood. This research will explore the effects of size-selective mortality on the population dynamics of sex-changing species using an integrated set of field experiments and mathematical models. It will provide the first experimental exploration of the sensitivity of different sex-change patterns and reproductive strategies to selective mortality. The results will advance our knowledge of the susceptibility and resilience of sex-changing organisms to different types of size-selective mortality and will reveal how sex-changing species can recover after size-selection ceases, as in populations within marine reserves where fishing is suddenly prohibited. The findings will inform fisheries management policies, which do not currently consider the ability of a species to change sex in setting fisheries regulations. This project will consist of a three-year study of the effects of size-specific mortality on sex-changing fishes. Field experiments will use three closely related rocky-reef fishes that differ in sex-change pattern and are amenable to field manipulation and direct measurement of reproductive output. The species include a protogynous hermaphrodite (a female-to-male sex-change pattern common among harvested species) and two simultaneous hermaphrodites that differ in their ability to switch between male and female. Two types of experiments will be conducted on populations established on replicate patch reefs at Santa Catalina Island, California: (1) sex ratios will be manipulated to determine when the scarcity of males limits population-level reproductive output; and (2) experiments cross-factoring the intensity of mortality with the form of size-selection (i.e., higher mortality of large or small individuals) will test the demographic consequences of size-selective mortality. In concert with the field experiments, size- and sex-structured population models (integral projection models) will be developed for use in three ways: (1) to evaluate how different types of selective mortality should affect population dynamics; (2) to predict outcomes of the field experiments, testing/validating the model and allowing direct prediction of the ecological significance of short-term selection; and (3) to fit to existing survey data for a fourth species, a widely fished, sex-changing fish, inside and outside of marine reserves. Part (3) will evaluate whether and how quickly the mating system and reproductive output of that species (not directly measurable in the field) is recovering inside reserves. This integrated set of field experiments and models will yield novel insight into the effects of size-selective mortality on the population dynamics of sex-changing marine species.
attribute	NC_GLOBAL	projects_0_end_date	String	2018-02
attribute	NC_GLOBAL	projects_0_geolocation	String	Southern California, Santa Catalina Island
attribute	NC_GLOBAL	projects_0_name	String	Impacts of size-selective mortality on sex-changing fishes
attribute	NC_GLOBAL	projects_0_project_nid	String	516431
attribute	NC_GLOBAL	projects_0_start_date	String	2015-03
attribute	NC_GLOBAL	publisher_name	String	Biological and Chemical Oceanographic Data Management Office (BCO-DMO)
attribute	NC_GLOBAL	publisher_type	String	institution
attribute	NC_GLOBAL	sourceUrl	String	(local files)
attribute	NC_GLOBAL	standard_name_vocabulary	String	CF Standard Name Table v55
attribute	NC_GLOBAL	summary	String	Sex ratio averages by location in M. beryllina collected in Suisun Bay, California from 2012 to 2013.
attribute	NC_GLOBAL	title	String	[Sex ratio averages by location] - Sex ratio averages by location in M. beryllina collected in Suisun Bay, California from 2012 to 2013. (Impacts of size-selective mortality on sex-changing fishes)
attribute	NC_GLOBAL	version	String	1
attribute	NC_GLOBAL	xml_source	String	osprey2erddap.update_xml() v1.3
variable	Site		String
attribute	Site	bcodmo_name	String	site
attribute	Site	description	String	Collection site
attribute	Site	long_name	String	Site
attribute	Site	units	String	unitless
variable	Total_adults		byte
attribute	Total_adults	_FillValue	byte	127
attribute	Total_adults	actual_range	byte	33, 54
attribute	Total_adults	bcodmo_name	String	count
attribute	Total_adults	description	String	Total number of adult M. beryllina collected
attribute	Total_adults	long_name	String	Total Adults
attribute	Total_adults	units	String	count
variable	Sex_ratio		double
attribute	Sex_ratio	_FillValue	double	NaN
attribute	Sex_ratio	actual_range	double	0.166666667, 0.694444444
attribute	Sex_ratio	bcodmo_name	String	unknown
attribute	Sex_ratio	description	String	Proportion of males in sample
attribute	Sex_ratio	long_name	String	Sex Ratio
attribute	Sex_ratio	units	String	unitless
variable	variance_factor		double
attribute	variance_factor	_FillValue	double	NaN
attribute	variance_factor	actual_range	double	0.050715052, 0.085058117
attribute	variance_factor	bcodmo_name	String	unknown
attribute	variance_factor	colorBarMaximum	double	50.0
attribute	variance_factor	colorBarMinimum	double	0.0
attribute	variance_factor	description	String	Variance factor for regression analysis
attribute	variance_factor	long_name	String	Variance Factor
attribute	variance_factor	units	String	unitless
variable	Z		float
attribute	Z	_FillValue	float	NaN
attribute	Z	actual_range	float	1.96, 1.96
attribute	Z	bcodmo_name	String	unknown
attribute	Z	description	String	Z factor
attribute	Z	long_name	String	Z
attribute	Z	units	String	unitless
variable	lower		double
attribute	lower	_FillValue	double	NaN
attribute	lower	actual_range	double	0.067265165, 0.543967949
attribute	lower	bcodmo_name	String	unknown
attribute	lower	description	String	Lower statistical limit
attribute	lower	long_name	String	Lower
attribute	lower	units	String	unitless
variable	upper		double
attribute	upper	_FillValue	double	NaN
attribute	upper	actual_range	double	0.233931832, 1.238412394
attribute	upper	bcodmo_name	String	unknown
attribute	upper	description	String	Upper statistical limit
attribute	upper	long_name	String	Upper
attribute	upper	units	String	unitless

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.