ERDDAP > info > bcodmo_dataset_701726

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	[Crab Tethering] - Tethering experiments on introduced crab conducted in several bays along the Central California coast in 2015 (RAPID: A rare opportunity to examine overcompensation resulting from intensive harvest of an introduced predator)		F   I   M	background			BCO-DMO	bcodmo_dataset_701726

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,.esriCsv,.geoJson
attribute	NC_GLOBAL	acquisition_description	String	We conducted tethering experiments in several northern California bays: Bodega Harbor, Tomales Bay, Bolinas Lagoon, and Seadrift Lagoon. All sites were accessed by foot via shore entry.\u00a0At each of four sites within each bay, we placed 10 small European green crabs (collected locally) in parallel arrays near the 0.0 tide level. Tethers were retrieved 24 hours later data and scored for presence/absence of crab including missing appendages and or condition of remaining tether line. See Turner et al. (2016) Biological Invasions 18: 533-548 for additional methodological details: Turner, B.C., de Rivera, C.E., Grosholz, E.D., & Ruiz, G.M. 2016. Assessing population increase as a possible outcome to management of invasive species. Biological Invasions, 18(2), pp 533\u2013548. doi:[10.1007/s10530-015-1026-9](\\"https://dx.doi.org/10.1007/s10530-015-1026-9\\")
attribute	NC_GLOBAL	awards_0_award_nid	String	699764
attribute	NC_GLOBAL	awards_0_award_number	String	OCE-1514893
attribute	NC_GLOBAL	awards_0_data_url	String	http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1514893
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	Tethering data for introduced crab for 2015 PI: Edwin Grosholz (UC Davis) Co-PI: Catherine de Rivera & Gregory Ruiz (Portland State University) Version: 15 June 2017 Note that all Seadrift sites are very close together and thus one lat/lon pair are used to represent all sites within Seadrift.
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	2017-05-31T16:08:41Z
attribute	NC_GLOBAL	date_modified	String	2020-01-14T18:23:51Z
attribute	NC_GLOBAL	defaultDataQuery	String	&time<now
attribute	NC_GLOBAL	doi	String	10.1575/1912/bco-dmo.701726.1
attribute	NC_GLOBAL	Easternmost_Easting	double	-122.653096
attribute	NC_GLOBAL	geospatial_lat_max	double	38.316968
attribute	NC_GLOBAL	geospatial_lat_min	double	37.906503
attribute	NC_GLOBAL	geospatial_lat_units	String	degrees_north
attribute	NC_GLOBAL	geospatial_lon_max	double	-122.653096
attribute	NC_GLOBAL	geospatial_lon_min	double	-123.058725
attribute	NC_GLOBAL	geospatial_lon_units	String	degrees_east
attribute	NC_GLOBAL	infoUrl	String	https://www.bco-dmo.org/dataset/701726
attribute	NC_GLOBAL	institution	String	BCO-DMO
attribute	NC_GLOBAL	keywords	String	bay, bco, bco-dmo, biological, chemical, collected, data, dataset, date, date_collected, dmo, erddap, latitude, longitude, management, oceanography, office, outcome, preliminary, sex, site, size
attribute	NC_GLOBAL	license	String	https://www.bco-dmo.org/dataset/701726/license
attribute	NC_GLOBAL	metadata_source	String	https://www.bco-dmo.org/api/dataset/701726
attribute	NC_GLOBAL	Northernmost_Northing	double	38.316968
attribute	NC_GLOBAL	param_mapping	String	{'701726': {'lat': 'master - latitude', 'lon': 'master - longitude'}}
attribute	NC_GLOBAL	parameter_source	String	https://www.bco-dmo.org/mapserver/dataset/701726/parameters
attribute	NC_GLOBAL	people_0_affiliation	String	University of California-Davis
attribute	NC_GLOBAL	people_0_affiliation_acronym	String	UC Davis
attribute	NC_GLOBAL	people_0_person_name	String	Edwin Grosholz
attribute	NC_GLOBAL	people_0_person_nid	String	699768
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	Portland State University
attribute	NC_GLOBAL	people_1_affiliation_acronym	String	PSU
attribute	NC_GLOBAL	people_1_person_name	String	Catherine de Rivera
attribute	NC_GLOBAL	people_1_person_nid	String	699771
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	Portland State University
attribute	NC_GLOBAL	people_2_affiliation_acronym	String	PSU
attribute	NC_GLOBAL	people_2_person_name	String	Gregory Ruiz
attribute	NC_GLOBAL	people_2_person_nid	String	471603
attribute	NC_GLOBAL	people_2_role	String	Co-Principal Investigator
attribute	NC_GLOBAL	people_2_role_type	String	originator
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	Shannon Rauch
attribute	NC_GLOBAL	people_3_person_nid	String	51498
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	Invasive_predator_harvest
attribute	NC_GLOBAL	projects_0_acronym	String	Invasive_predator_harvest
attribute	NC_GLOBAL	projects_0_description	String	The usual expectation is that when populations of plants and animals experience repeated losses to predators or human harvest, they would decline over time. If instead these populations rebound to numbers exceeding their initial levels, this would seem counter-intuitive or even paradoxical. However, for several decades mathematical models of population processes have shown that this unexpected response, formally known as overcompensation, is not only possible, but even expected under some circumstances. In what may be the first example of overcompensation in a marine system, a dramatic increase in a population of the non-native European green crab was recently observed following an intensive removal program. This RAPID project will use field surveys and laboratory experiments to verify that this population explosion results from overcompensation. Data will be fed into population models to understand to what degree populations processes such as cannibalism by adult crabs on juvenile crabs and changes in maturity rate of reproductive females are contributing to or modifying overcompensation. The work will provide important insights into the fundamental population dynamics that can produce overcompensation in both natural and managed populations. Broader Impacts include mentoring graduate trainees and undergraduate interns in the design and execution of field experiments as well as in laboratory culture and feeding experiments. The project will also involve a network of citizen scientists who are involved with restoration activities in this region and results will be posted on the European Green Crab Project website. This project aims to establish the first example of overcompensation in marine systems. Overcompensation refers to the paradoxical process where reduction of a population due to natural or human causes results in a greater equilibrium population than before the reduction. A population explosion of green crabs has been recently documented in a coastal lagoon and there are strong indications that this may be the result of overcompensation. Accelerated maturation of females, which can accompany and modify the expression of overcompensation has been observed. This RAPID project will collect field data from this unusual recruitment class and conduct targeted mesocosm experiments. These will include population surveys and mark-recapture studies to measure demographic rates across study sites. Laboratory mesocosm studies using this recruitment class will determine size specific mortality. Outcomes will be used in population dynamics models to determine to what degree overcompensation has created this dramatic population increase. The project will seek answers to the following questions: 1) what are the rates of cannibalism by adult green crabs and large juveniles on different sizes of juvenile green crabs, 2) what are the consequences of smaller size at first reproduction for population dynamics and for overcompensation and 3) how quickly will the green crab population return to the levels observed prior to the eradication program five years earlier?
attribute	NC_GLOBAL	projects_0_end_date	String	2016-11
attribute	NC_GLOBAL	projects_0_geolocation	String	Europe
attribute	NC_GLOBAL	projects_0_name	String	RAPID: A rare opportunity to examine overcompensation resulting from intensive harvest of an introduced predator
attribute	NC_GLOBAL	projects_0_project_nid	String	699765
attribute	NC_GLOBAL	projects_0_start_date	String	2014-12
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	Southernmost_Northing	double	37.906503
attribute	NC_GLOBAL	standard_name_vocabulary	String	CF Standard Name Table v55
attribute	NC_GLOBAL	summary	String	Tethering data for introduced crab for 2015. Experiments were conducted in several bays along Central California coast, shallow subtidal (<3 m depth).
attribute	NC_GLOBAL	title	String	[Crab Tethering] - Tethering experiments on introduced crab conducted in several bays along the Central California coast in 2015 (RAPID: A rare opportunity to examine overcompensation resulting from intensive harvest of an introduced predator)
attribute	NC_GLOBAL	version	String	1
attribute	NC_GLOBAL	Westernmost_Easting	double	-123.058725
attribute	NC_GLOBAL	xml_source	String	osprey2erddap.update_xml() v1.3
variable	bay		String
attribute	bay	bcodmo_name	String	site
attribute	bay	description	String	Name of bay
attribute	bay	long_name	String	Bay
attribute	bay	units	String	unitless
variable	site		String
attribute	site	bcodmo_name	String	site
attribute	site	description	String	Name/identifier of the site within the bay
attribute	site	long_name	String	Site
attribute	site	units	String	unitless
variable	latitude		double
attribute	latitude	_CoordinateAxisType	String	Lat
attribute	latitude	_FillValue	double	NaN
attribute	latitude	actual_range	double	37.906503, 38.316968
attribute	latitude	axis	String	Y
attribute	latitude	bcodmo_name	String	latitude
attribute	latitude	colorBarMaximum	double	90.0
attribute	latitude	colorBarMinimum	double	-90.0
attribute	latitude	description	String	Latitude of the site
attribute	latitude	ioos_category	String	Location
attribute	latitude	long_name	String	Latitude
attribute	latitude	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P09/current/LATX/
attribute	latitude	standard_name	String	latitude
attribute	latitude	units	String	degrees_north
variable	longitude		double
attribute	longitude	_CoordinateAxisType	String	Lon
attribute	longitude	_FillValue	double	NaN
attribute	longitude	actual_range	double	-123.058725, -122.653096
attribute	longitude	axis	String	X
attribute	longitude	bcodmo_name	String	longitude
attribute	longitude	colorBarMaximum	double	180.0
attribute	longitude	colorBarMinimum	double	-180.0
attribute	longitude	description	String	Longitude of the site
attribute	longitude	ioos_category	String	Location
attribute	longitude	long_name	String	Longitude
attribute	longitude	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P09/current/LONX/
attribute	longitude	standard_name	String	longitude
attribute	longitude	units	String	degrees_east
variable	date_collected		String
attribute	date_collected	bcodmo_name	String	date
attribute	date_collected	description	String	Date retrieved (yyyy-mm-dd)
attribute	date_collected	long_name	String	Date Collected
attribute	date_collected	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/ADATAA01/
attribute	date_collected	units	String	unitless
variable	size		byte
attribute	size	_FillValue	byte	127
attribute	size	actual_range	byte	11, 41
attribute	size	bcodmo_name	String	width
attribute	size	description	String	Carapace width in millimeters
attribute	size	long_name	String	Size
attribute	size	units	String	millimeters (mm)
variable	sex		String
attribute	sex	bcodmo_name	String	sex
attribute	sex	description	String	Sex: M=male, F=female, P=parasitized
attribute	sex	long_name	String	Sex
attribute	sex	units	String	unitless
variable	outcome		String
attribute	outcome	bcodmo_name	String	unknown
attribute	outcome	description	String	Condition of crab and tether after retrieval: Undamaged = intact, no evidence of predation; ML = missing legs; Predation = evidence of predation; Escape = evidence that tether failed; Loop = tether loop still intact.
attribute	outcome	long_name	String	Outcome
attribute	outcome	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.