ERDDAP > info > bcodmo_dataset_712919

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
	set	data	graph		files	public	[Raw patterns] - Sex ratio and GSI data for M. beryllina collected offshore of Pt. Lobos, California from 2009 to 2010. (Impacts of size-selective mortality on sex-changing fishes)		I   M	background			BCO-DMO	bcodmo_dataset_712919

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	Methodology from: Brander et al., 2013 Fish Collecting and Processing Fish were collected monthly from the urban and ranch beaches from March through October of 2009 and 2010, as previously described. All research was done in accordance with the University of California, Davis Institutional Animal Care and Use Committee (IACUC), under approved protocol #13353. Captured fish were kept in a cooler with aeration and transported back to the UC Davis Bodega Marine Lab, Bodega Bay, CA, for processing. During the 2009 sampling season approximately 20 fish from each site were kept alive and held in aquaria at 5\u201310 ppt salinity for 4\u20135 months to serve as depurated controls for gene expression analyses. The remaining fish were anesthetized in accordance with IACUC protocol #13353, sacrificed, and livers were immediately removed and snap-frozen on liquid nitrogen for RNA extraction. Gonads were removed, weighed, and fixed for 24 hours in Davidson\u2019s solution\u00a0followed by storage in phosphate buffered 10% formalin. Fish length and sex were recorded prior to and following dissection, respectively. Fish mass was measured after gonad removal and used in addition to gonad mass to obtain a total mass for gonadosomatic index (GSI) calculation (GSI = gonad mass/total mass). Sagittal otoliths were extracted, mounted on slides, photographed, and growth increments were counted and measured based on previously described methods. Length, Sex Ratio,\u00a0GSI Because fish length, sex ratio, and GSI were expected to vary over the sampling period, we tested for differences among sites in those variables while including year and Julian date as covariates in a linear model (length) or logistic regression (sex ratio and GSI). Because no females were seined from the urban beach after July in either 2009 or 2010, GSI analysis was ended at that time point.
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	Raw pattern summary data Collected by Susanne Brander 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	2017-08-16T21:11:08Z
attribute	NC_GLOBAL	date_modified	String	2019-03-20T14:59:40Z
attribute	NC_GLOBAL	defaultDataQuery	String	&time<now
attribute	NC_GLOBAL	doi	String	10.1575/1912/bco-dmo.712919.1
attribute	NC_GLOBAL	infoUrl	String	https://www.bco-dmo.org/dataset/712919
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	713186
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	bco, bco-dmo, biological, chemical, data, dataset, date, dmo, erddap, gsi, investigator, management, mean, MeanGSI, oceanography, office, preliminary, site, time, total
attribute	NC_GLOBAL	license	String	https://www.bco-dmo.org/dataset/712919/license
attribute	NC_GLOBAL	metadata_source	String	https://www.bco-dmo.org/api/dataset/712919
attribute	NC_GLOBAL	param_mapping	String	{'712919': {}}
attribute	NC_GLOBAL	parameter_source	String	https://www.bco-dmo.org/mapserver/dataset/712919/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	subsetVariables	String	Investigator
attribute	NC_GLOBAL	summary	String	Sex ratio and GSI data for M. beryllina collected offshore of Pt. Lobos, California from 2009 to 2010.
attribute	NC_GLOBAL	title	String	[Raw patterns] - Sex ratio and GSI data for M. beryllina collected offshore of Pt. Lobos, California from 2009 to 2010. (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	Investigator		String
attribute	Investigator	bcodmo_name	String	person
attribute	Investigator	description	String	Investigator that collected these data
attribute	Investigator	long_name	String	Investigator
attribute	Investigator	units	String	unitless
variable	Site		String
attribute	Site	bcodmo_name	String	site
attribute	Site	description	String	Site where data were collected
attribute	Site	long_name	String	Site
attribute	Site	units	String	unitless
variable	Date		String
attribute	Date	bcodmo_name	String	date
attribute	Date	description	String	Date of data collection; YYYY/MM/DD
attribute	Date	long_name	String	Date
attribute	Date	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/ADATAA01/
attribute	Date	source_name	String	Date
attribute	Date	time_precision	String	1970-01-01
attribute	Date	units	String	unitless
variable	MeanGSI		float
attribute	MeanGSI	_FillValue	float	NaN
attribute	MeanGSI	actual_range	float	0.6, 14.4
attribute	MeanGSI	bcodmo_name	String	mean
attribute	MeanGSI	description	String	Mean gonadosomatic index of females
attribute	MeanGSI	long_name	String	Mean GSI
attribute	MeanGSI	units	String	count
variable	Fs		byte
attribute	Fs	_FillValue	byte	127
attribute	Fs	actual_range	byte	0, 10
attribute	Fs	bcodmo_name	String	count
attribute	Fs	description	String	Number of females in sample
attribute	Fs	long_name	String	FS
attribute	Fs	units	String	count
variable	Ms		byte
attribute	Ms	_FillValue	byte	127
attribute	Ms	actual_range	byte	0, 25
attribute	Ms	bcodmo_name	String	count
attribute	Ms	description	String	Number of males in sample
attribute	Ms	long_name	String	MS
attribute	Ms	units	String	count
variable	Total		byte
attribute	Total	_FillValue	byte	127
attribute	Total	actual_range	byte	1, 26
attribute	Total	bcodmo_name	String	count
attribute	Total	description	String	Total number of adult M. beryllina collected
attribute	Total	long_name	String	Total
attribute	Total	units	String	count

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.