ERDDAP > info > bcodmo_dataset_3704

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	[seal_location_tracking] - Locations of satellite-tagged harbor seals in the San Juan Islands, WA from 2007-2009 (Responses of Seals and Sea Lions to Increased Rockfish Density)		F   I   M	background			BCO-DMO	bcodmo_dataset_3704

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	Seals were captured and tagged in April or May of 2007 and 2008 following the methods of Jeffries et al. (1993) at three sites: Padilla Bay, Bird/Belle Rocks, and Protection Island. In 2009, seals were captured on Protection Island. In 2007-2008, animals were tagged with time-depth recorders (TDR; Wildlife Computers, model Mk-9 or Mk-10F) and satellite tags. The TDR tags were placed on the dorsal midline of the animals and the satellite tags were placed on top the head. In 2009, animals were tagged with a combined satellite-linked TDR and Fastloc GPS receiver (Wildlife Computers, model Mk10AF). These instruments were epoxied to the animals on the dorsal midline so that satellite tags would be exposed to the air when the back of the seal reached the surface. Position transmissions were received via the ARGOS satellite network. Tags transmitted locations daily. TDR sensors were programmed to sample every 10 seconds. TDR tags were equipped with a VHF transmitter to allow for the device to be recovered when it was shed during the animal's annual molt. The Argos system provides 2 position estimates (lat/lon and lat2/lon2). Argos usually picks the correct lat/lon pair (of the two it generates), but occasionally it does not. When working with these data, one of the first steps is to check the lat/lon pairs to see if swapping out the lat/lon pair for the lat2/lon2 pair improves the data and is more biologically reasonable. The Argos positioning system uses the following system for classifying location quality. These codes are used in the loc_q_flag column. Standard locations are those with > 4 uplinks from the tag; auxiliary locations are those with 4 or less uplinks from the tag. loc_q_flag codes (according to Ward et al.): Standard locations: 3 = 68th percentile predicted accuracy < 150 m 2 = 68th percentile predicted accuracy 150 - 350 m 1 = 68th percentile predicted accuracy < 1,000 m Auxiliary locations: 0 = 4 uplinks, with > 1,000 m predicted accuracy A = 3 uplinks, with no predicted accuracy B = 2 uplinks, with no predicted accuracy
attribute	NC_GLOBAL	awards_0_award_nid	String	54955
attribute	NC_GLOBAL	awards_0_award_number	String	OCE-0550443
attribute	NC_GLOBAL	awards_0_data_url	String	http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=0550443
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	Locations of Harbor Seals tagged and tracked at the San Juan Islands, 2007-2009 Lead PI: Alejandro Acevedo-Gutierrez Version: 28 Nov 2012
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	2012-08-29T17:55:32Z
attribute	NC_GLOBAL	date_modified	String	2019-03-01T20:28:35Z
attribute	NC_GLOBAL	defaultDataQuery	String	&amp;time&lt;now
attribute	NC_GLOBAL	doi	String	10.1575/1912/bco-dmo.3704.1
attribute	NC_GLOBAL	Easternmost_Easting	double	179.802
attribute	NC_GLOBAL	geospatial_lat_max	double	61.208
attribute	NC_GLOBAL	geospatial_lat_min	double	8.818
attribute	NC_GLOBAL	geospatial_lat_units	String	degrees_north
attribute	NC_GLOBAL	geospatial_lon_max	double	179.802
attribute	NC_GLOBAL	geospatial_lon_min	double	-175.813
attribute	NC_GLOBAL	geospatial_lon_units	String	degrees_east
attribute	NC_GLOBAL	infoUrl	String	https://www.bco-dmo.org/dataset/3704
attribute	NC_GLOBAL	institution	String	BCO-DMO
attribute	NC_GLOBAL	instruments_0_acronym	String	TDR
attribute	NC_GLOBAL	instruments_0_dataset_instrument_description	String	TDR's were epoxied to seals along the dorsal midline. All TDR tags were equipped with an Eco-tech floatation pack and a VHF radio transmitter to allow for tracking and retrieval of the device once it became detached from the animal. TDR sensors were set to sample every 10 seconds and record only dives >2 m in depth or >30 s in duration. In 2009, the TDR's used contained an MK10-AF Argos transmitter.
attribute	NC_GLOBAL	instruments_0_dataset_instrument_nid	String	5755
attribute	NC_GLOBAL	instruments_0_description	String	Time depth recorders (TDR's) manufactured by Wildlife Computers, Redmond WA) are designed for studies of seals, penguins, fish, and marine mammals. Standard TDR's are mounted externally on the animal's body, where they record temperature and depth. See more information from the manufacturer.
attribute	NC_GLOBAL	instruments_0_instrument_name	String	Wildlife Computers Time-Depth Tag (TDR)
attribute	NC_GLOBAL	instruments_0_instrument_nid	String	668
attribute	NC_GLOBAL	instruments_0_supplied_name	String	Wildlife Computers TDR
attribute	NC_GLOBAL	instruments_1_acronym	String	SPOT5
attribute	NC_GLOBAL	instruments_1_dataset_instrument_description	String	In 2007-2008, SPOT5 transmitters were epoxied to the tops of seals heads. Satellite locations were obtained daily.
attribute	NC_GLOBAL	instruments_1_dataset_instrument_nid	String	5756
attribute	NC_GLOBAL	instruments_1_description	String	The SPOT5 is an Argos transmitter manufactured by Wildlife Computers (Redmond, WA) and designed for deployment on marine mammals, fish, or seabirds. SPOT5 devices use the Argos satellite network to transmit locations of animals with an accuracy of +/- 350-meters. See more information from the manufacturer.
attribute	NC_GLOBAL	instruments_1_instrument_external_identifier	String	https://vocab.nerc.ac.uk/collection/L05/current/POS17/
attribute	NC_GLOBAL	instruments_1_instrument_name	String	SPOT5 Argos Transmitter
attribute	NC_GLOBAL	instruments_1_instrument_nid	String	669
attribute	NC_GLOBAL	instruments_1_supplied_name	String	SPOT5 Argos Transmitter
attribute	NC_GLOBAL	keywords	String	bco, bco-dmo, biological, chemical, data, dataset, date, day, dmo, erddap, flaq, inst, lat2, latitude, loc, loc_q_flaq, lon2, longitude, management, month, oceanography, office, preliminary, pttno, satellite, seal, seal_id, time, time2, year
attribute	NC_GLOBAL	license	String	https://www.bco-dmo.org/dataset/3704/license
attribute	NC_GLOBAL	metadata_source	String	https://www.bco-dmo.org/api/dataset/3704
attribute	NC_GLOBAL	Northernmost_Northing	double	61.208
attribute	NC_GLOBAL	param_mapping	String	{'3704': {'lat': 'flag - latitude', 'lon': 'flag - longitude'}}
attribute	NC_GLOBAL	parameter_source	String	https://www.bco-dmo.org/mapserver/dataset/3704/parameters
attribute	NC_GLOBAL	people_0_affiliation	String	Western Washington University
attribute	NC_GLOBAL	people_0_affiliation_acronym	String	WWU
attribute	NC_GLOBAL	people_0_person_name	String	Alejandro Acevedo-Gutierrez
attribute	NC_GLOBAL	people_0_person_nid	String	51487
attribute	NC_GLOBAL	people_0_role	String	Lead Principal Investigator
attribute	NC_GLOBAL	people_0_role_type	String	originator
attribute	NC_GLOBAL	people_1_affiliation	String	United States Geological Survey
attribute	NC_GLOBAL	people_1_affiliation_acronym	String	USGS
attribute	NC_GLOBAL	people_1_person_name	String	Jeffrey F Bromaghin
attribute	NC_GLOBAL	people_1_person_nid	String	51491
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	Washington Department of Fish and Wildlife
attribute	NC_GLOBAL	people_2_person_name	String	Steven J Jeffries
attribute	NC_GLOBAL	people_2_person_nid	String	51489
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	University of Alaska, Anchorage
attribute	NC_GLOBAL	people_3_affiliation_acronym	String	UAA
attribute	NC_GLOBAL	people_3_person_name	String	John M Kennish
attribute	NC_GLOBAL	people_3_person_nid	String	51490
attribute	NC_GLOBAL	people_3_role	String	Co-Principal Investigator
attribute	NC_GLOBAL	people_3_role_type	String	originator
attribute	NC_GLOBAL	people_4_affiliation	String	Washington Department of Fish and Wildlife
attribute	NC_GLOBAL	people_4_person_name	String	Monique M Lance
attribute	NC_GLOBAL	people_4_person_nid	String	51488
attribute	NC_GLOBAL	people_4_role	String	Co-Principal Investigator
attribute	NC_GLOBAL	people_4_role_type	String	originator
attribute	NC_GLOBAL	people_5_affiliation	String	National Marine Fisheries Service
attribute	NC_GLOBAL	people_5_affiliation_acronym	String	NMFS
attribute	NC_GLOBAL	people_5_person_name	String	Philip S Levin
attribute	NC_GLOBAL	people_5_person_nid	String	51492
attribute	NC_GLOBAL	people_5_role	String	Co-Principal Investigator
attribute	NC_GLOBAL	people_5_role_type	String	originator
attribute	NC_GLOBAL	people_6_affiliation	String	Woods Hole Oceanographic Institution
attribute	NC_GLOBAL	people_6_affiliation_acronym	String	WHOI BCO-DMO
attribute	NC_GLOBAL	people_6_person_name	String	Shannon Rauch
attribute	NC_GLOBAL	people_6_person_nid	String	51498
attribute	NC_GLOBAL	people_6_role	String	BCO-DMO Data Manager
attribute	NC_GLOBAL	people_6_role_type	String	related
attribute	NC_GLOBAL	project	String	Seal_response_to_prey
attribute	NC_GLOBAL	projects_0_acronym	String	Seal_response_to_prey
attribute	NC_GLOBAL	projects_0_description	String	From NSF proposal: This project is a collaborative study of the responses of harbor seals and other mammalian predators to changes in prey density in Puget Sound. The general study approach will involve multi-year field estimates to observe the responses of predators to rockfish density in protected areas, candidate marine reserves, and unprotected sites. The collaborating investigators will estimate 1) rockfish density using visual and mark and recapture techniques; 2) predator abundance using aerials surveys and dedicated land observations; and 3) predator food consumption using scat to describe diet, tagging of harbor seals to describe individual foraging sites, and population-based and individual bioenergetics models to describe consumption of rockfish. The investigators will also take into account confounding factors that might explain predator behavior, such as environmental variables and alternative prey, by creating a GIS database from available information from the area. The different field observations and database estimates are explicitly linked through a common hypothesis and coordinated methodologies, and their results will be integrated into a model describing the impact of predation on rockfish populations. The responses of top predators to changes in prey density and their impact on fish populations of interest are unknown. This study will evaluate the effectiveness of MPAs as fish refugia, offer a framework for the management and conservation of marine resources, and provide an exciting opportunity for students to participate in ecological and conservation research. Hypotheses: 1) Harbor seals and other pinniped species show aggregative responses to changes in prey density. Hence, their abundance will increase with fish density. 2) Harbor seals and other pinniped species show Type 2 or 3 functional responses to changes in prey density. Thus, their consumption rate of a particular prey type follows an asymptotic or sigmoidal curve relative to the prey’s density, respectively. 3) Predation by harbor seals and other pinniped species is sufficiently intense that it impedes recovery of depleted fish populations. Objectives: 1) Quantify the number of harbor seals and other pinniped species in relation to rockfish density and other environmental (confounding) factors. 2) Estimate the consumption rate of harbor seals and other pinniped species in relation to rockfish density and other prey species. 3) Correlatively estimate the influence of predation by harbor seals and other pinniped species on survivorship and population size of rockfish. Publications resulting from this NSF award:Bjorland, R. H., Pearson, S. F, Jeffries, S. J, Lance, M. M., Acevedo- Gutiérrez, A. & Ward, E. J. 2015. Stable isotope mixing models elucidate sex and size effects on the diet of a generalist marine predator. Marine Ecology Progress Series 526: 213-225. DOI: 10.3354/meps11230Bromaghin, J. F., Lance, M. M., Elliott, E. W., Jeffries, S. J., Acevedo-Gutierrez, A. & Kennish, J. M. 2013. New insights into the diets of harbor seals in the Salish Sea of western North America revealed by quantitative fatty acid signature analysis. Fishery Bulletin 111: 13-26. DOI: 10.7755/FB.111.1.2Buzzell, B.1, Lance, M. & Acevedo-Gutiérrez, A. 2014. Spatial and temporal variation in river otter (Lontra canadensis) diet and predation on rockfish (Genus Sebastes) in the San Juan Islands, Washington. Aquatic Mammals 40: 150- 161. DOI: 10.1578/AM.40.2.2014.150Howard, S., Lance, M., Jeffries, S. & Acevedo-Gutierrez, A. 2013. Fish consumption by harbor seals (Phoca vitulina) in the San Juan Islands, WA. Fishery Bulletin 111: 27-41. DOI: 10.7755/FB.111.1.3Lance, M. M., Chang, W.-Y., Jeffries, S. J., Pearson, S. F. & Acevedo-Gutierrez, A. 2012. Harbor seal diet in northern Puget Sound: implications for the recovery of depressed fish stocks. Marine Ecology Progress Series 464:257-271. DOI:10.3354/meps09880Luxa, K. & Acevedo-Gutierrez, A. 2013. Food habits of harbor seals (Phoca vitulina) in two estuaries in the central Salish Sea. Aquatic Mammals 39: 10- 22. DOI: 10.1578/AM.39.1.2013.10Peterson, S., Lance, M. M., Jeffries, S. J. & Acevedo-Gutierrez, A. 2012. Long distance movements and disjunct spatial use of harbor seals (Phoca vitulina) in the inland waters of the Pacific Northwest. PLoS ONE 7: e39046. DOI: 10.1371/journal.pone.0039046Thomas, AC; Lance, MM; Jeffries, SJ; Miner, BG; Acevedo-Gutierrez, A. 2011. Harbor seal foraging response to a seasonal resource pulse, spawning Pacific herring. Marine Ecology-Progress Series, v.441. p. 225. DOI: 10.3354/meps09370Ward, EJ; Levin, PS; Lance, MM; Jeffries, SJ; Acevedo-Gutierrez, A. 2012. Integrating diet and movement data to identify hot spots of predation risk and areas of conservation concern for endangered species. Conservation Letters, v.5, p. 37. DOI: 10.1111/j.1755-263X.2011.00210.xWilson, K.2, Lance, M., Jeffries, S. & Acevedo-Gutiérrez, A. 2014. Fine-scale variability in harbor seal foraging behavior. PLoS ONE 9: e92838. DOI: 10.1371/journal.pone.0092838.
attribute	NC_GLOBAL	projects_0_end_date	String	2012-03
attribute	NC_GLOBAL	projects_0_geolocation	String	Salish Sea, USA and Canada
attribute	NC_GLOBAL	projects_0_name	String	Responses of Seals and Sea Lions to Increased Rockfish Density
attribute	NC_GLOBAL	projects_0_project_nid	String	2205
attribute	NC_GLOBAL	projects_0_project_website	String	http://biol.wwu.edu/mbel/?page=research
attribute	NC_GLOBAL	projects_0_start_date	String	2006-04
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	8.818
attribute	NC_GLOBAL	standard_name_vocabulary	String	CF Standard Name Table v55
attribute	NC_GLOBAL	summary	String	Coordinates of tagged seals in the San Juan Islands are reported. Seals were captured and tagged during 2007 to 2009 at several sites in Padilla Bay and the Rosario Strait of the Pacific Northwest coast. Seals were tagged with satellite-linked time-depth recorders (TDR's) and GPS receivers.
attribute	NC_GLOBAL	title	String	[seal_location_tracking] - Locations of satellite-tagged harbor seals in the San Juan Islands, WA from 2007-2009 (Responses of Seals and Sea Lions to Increased Rockfish Density)
attribute	NC_GLOBAL	version	String	1
attribute	NC_GLOBAL	Westernmost_Easting	double	-175.813
attribute	NC_GLOBAL	xml_source	String	osprey2erddap.update_xml() v1.3
variable	seal_id		String
attribute	seal_id	bcodmo_name	String	sealname
attribute	seal_id	description	String	Unique seal identification.
attribute	seal_id	long_name	String	Seal Id
attribute	seal_id	units	String	unitless
variable	pttno		int
attribute	pttno	_FillValue	int	2147483647
attribute	pttno	actual_range	int	35921, 92047
attribute	pttno	bcodmo_name	String	tagid
attribute	pttno	description	String	PTT tag number.
attribute	pttno	long_name	String	Pttno
attribute	pttno	units	String	unitless
variable	inst		String
attribute	inst	bcodmo_name	String	inst_model
attribute	inst	description	String	Name of the instrument (MK10 or SPOT 5; both manufactured by Wildlife Computers).
attribute	inst	long_name	String	Inst
attribute	inst	units	String	unitless
variable	latitude		double
attribute	latitude	_CoordinateAxisType	String	Lat
attribute	latitude	_FillValue	double	NaN
attribute	latitude	actual_range	double	8.818, 61.208
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	Primary latitude. (See Acquisition Description.)
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	-175.813, 179.802
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	Primary longitude. (See Acquisition Description.)
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	lat2		float
attribute	lat2	_FillValue	float	NaN
attribute	lat2	actual_range	float	-61.832, 78.886
attribute	lat2	bcodmo_name	String	latitude
attribute	lat2	colorBarMaximum	double	90.0
attribute	lat2	colorBarMinimum	double	-90.0
attribute	lat2	description	String	Secondary estimate of latitude provided by Argos. (See Acquisition Description.)
attribute	lat2	long_name	String	Latitude
attribute	lat2	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P09/current/LATX/
attribute	lat2	standard_name	String	latitude
attribute	lat2	units	String	decimal degrees
variable	lon2		float
attribute	lon2	_FillValue	float	NaN
attribute	lon2	actual_range	float	-179.999, 179.991
attribute	lon2	bcodmo_name	String	longitude
attribute	lon2	colorBarMaximum	double	180.0
attribute	lon2	colorBarMinimum	double	-180.0
attribute	lon2	description	String	Secondary estimate of longitude provided by Argos. (See Acquisition Description.)
attribute	lon2	long_name	String	Longitude
attribute	lon2	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P09/current/LONX/
attribute	lon2	standard_name	String	longitude
attribute	lon2	units	String	decimal degrees
variable	month		String
attribute	month	bcodmo_name	String	month
attribute	month	description	String	Month of year (01 to 12).
attribute	month	long_name	String	Month
attribute	month	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/MNTHXXXX/
attribute	month	units	String	mm
variable	day		String
attribute	day	bcodmo_name	String	day
attribute	day	description	String	Day of month (01 to 31).
attribute	day	long_name	String	Day
attribute	day	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/DAYXXXXX/
attribute	day	units	String	dd
variable	year		short
attribute	year	_FillValue	short	32767
attribute	year	actual_range	short	2007, 2009
attribute	year	bcodmo_name	String	year
attribute	year	description	String	4-digit year. in yyyy format
attribute	year	long_name	String	Year
attribute	year	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/YEARXXXX/
attribute	year	units	String	unitless
variable	date		String
attribute	date	bcodmo_name	String	date
attribute	date	description	String	Date, in mm/dd/yyyy format.
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	time2		String
attribute	time2	bcodmo_name	String	time
attribute	time2	description	String	Time, 24-hour clock.
attribute	time2	long_name	String	Time
attribute	time2	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/AHMSAA01/
attribute	time2	units	String	HHMM
variable	satellite		String
attribute	satellite	bcodmo_name	String	unknown
attribute	satellite	description	String	Identification of the Argos satellite transmitting the signal: A = METOP-A (MA); K = NOAA-15 (NK); L = NOAA-16 (NL); M = NOAA-17 (NM); N = NOAA-18 (NN); P = NOAA-N (NP). See more information.
attribute	satellite	long_name	String	Satellite
attribute	satellite	units	String	unitless
variable	loc_q_flaq		String
attribute	loc_q_flaq	bcodmo_name	String	q_flag
attribute	loc_q_flaq	description	String	Location quality flag. The Argos system classifies points with decreasing precision: 3 > 2 > 1 > 0 > A > B. See Acquisition Description for code definitions.
attribute	loc_q_flaq	long_name	String	Loc Q Flaq
attribute	loc_q_flaq	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.