Accessing BCO-DMO data
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BCO-DMO ERDDAP
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| Dataset Title: | [seal_ID_info] - Physical data (sex, weight, tag ID number) from Harbor Seals tagged in the San Juan Islands, 2007-2008 (Responses of Seals and Sea Lions to Increased Rockfish Density) 
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| Institution: | BCO-DMO (Dataset ID: bcodmo_dataset_3794) |
| Information: | Summary
| License
| ISO 19115
| Metadata
| Background
| Subset
| Files
| Make a graph
|
Attributes {
s {
seal_id {
String bcodmo_name "sealname";
String description "Unique seal identification.";
String long_name "Seal Id";
String units "unitless";
}
season {
String bcodmo_name "season";
String description "Season: spring, winter, or fall.";
String long_name "Season";
String units "text";
}
date {
String bcodmo_name "date";
String description "Date of capture. format: mm/dd/YYYY";
String long_name "Date";
String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/ADATAA01/";
String source_name "date";
String time_precision "1970-01-01";
String units "unitless";
}
month {
String bcodmo_name "month";
String description "2-digit month when captured. format: mm (01 to 12)";
String long_name "Month";
String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/MNTHXXXX/";
String units "unitless";
}
day {
String bcodmo_name "day";
String description "2-digit day of month when captured. format: dd (01 to 31)";
String long_name "Day";
String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/DAYXXXXX/";
String units "unitless";
}
year {
Int16 _FillValue 32767;
Int16 actual_range 2007, 2008;
String bcodmo_name "year";
String description "Year of capture. format: YYYY";
String long_name "Year";
String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/YEARXXXX/";
String units "unitless";
}
region {
String bcodmo_name "region";
String description "Name of the geographic region.";
String long_name "Region";
String units "text";
}
site {
String bcodmo_name "site";
String description "Name of the site where captured.";
String long_name "Site";
String units "text";
}
age {
String bcodmo_name "ageclass";
String description "A or AD = adult; SAD = small adult.";
String long_name "Age";
String units "text";
}
sex {
String bcodmo_name "sex";
String description "Sex; M = male; F = female.";
String long_name "Sex";
String units "M or F";
}
length {
Float32 _FillValue NaN;
Float32 actual_range 121.0, 163.0;
String bcodmo_name "length";
String description "Length of the animal, in centimeters.";
String long_name "Length";
String units "cm";
}
weight {
String bcodmo_name "weight";
String description "Weight of the animal, in kilograms.";
String long_name "Weight";
String units "kg";
}
pelage {
String bcodmo_name "unknown";
String description "Description of the animal's pelage (coat).";
String long_name "Pelage";
String units "text";
}
pregnant {
String bcodmo_name "unknown";
String description "Yes/no indicator of whether or not the animal was pregnant.";
String long_name "Pregnant";
String units "Y / N";
}
lactating {
String bcodmo_name "unknown";
String description "Yes/no indicator of whether or not the animal was lactating.";
String long_name "Lactating";
String units "Y / N";
}
molt {
String bcodmo_name "unknown";
String description "Yes/no indicator of whether or not the animal was molting.";
String long_name "Molt";
String units "Y / N";
}
blood {
String bcodmo_name "unknown";
String description "Yes/no indicator of whether or not blood was drawn.";
String long_name "Blood";
String units "Y / N";
}
biopsy {
String bcodmo_name "unknown";
String description "Yes/no indicator of whether or not a sample was taken for biopsy.";
String long_name "Biopsy";
String units "Y / N";
}
inst {
String bcodmo_name "instrument";
String description "Model of the TDR (time-depth recorder) attached to the animal.";
String long_name "Inst";
String units "unitless";
}
serial_num {
String bcodmo_name "inst_serial_numb";
String description "inst serial number.";
String long_name "Serial Num";
String units "unitless";
}
inst2 {
String bcodmo_name "instrument";
String description "Model of the tracking device attached to animal.";
String long_name "Inst2";
String units "unitless";
}
serial_num2 {
String bcodmo_name "inst_serial_numb";
String description "inst2 serial number.";
String long_name "Serial Num2";
String units "unitless";
}
pttno {
Int32 _FillValue 2147483647;
Int32 actual_range 35898, 82050;
String bcodmo_name "pttno";
String description "PTT tag number.";
String long_name "Pttno";
String units "unitless";
}
inst3 {
String bcodmo_name "instrument";
String description "Model of 3rd instrument associated with the animal.";
String long_name "Inst3";
String units "unitless";
}
serial_num3 {
String bcodmo_name "inst_serial_numb";
String description "inst3 serial number.";
String long_name "Serial Num3";
String units "unitless";
}
comment {
String bcodmo_name "comment";
String description "Free-text comments.";
String long_name "Comment";
String units "text";
}
}
NC_GLOBAL {
String access_formats ".htmlTable,.csv,.json,.mat,.nc,.tsv";
String acquisition_description
"The methods below are further described in Peterson et al. (2012), Ward et al.
(2012), and Thomas et al. (2011):
To estimate the movement behavior of Harbor Seals, adult seals were captured
in 2007 to 2008 at several sites in the San Juan Islands: Padilla Bay, Bird
Rocks, Belle Chain, and Protection Island. Several methods were used to
capture seals, including boat rushes, beach sienes, and tangle-nets. Captured
seals were sexed, weighed, and measured. Seals were classified as adults if
they weighed more than 50 kg. All animals were flipper-tagged with unique ID
numbers. Adult seals were tagged with time-depth recorders, and satellite tags
were glued to the animals.
References:
Peterson, 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.0039046](\\\\\"https://dx.doi.org/10.1371/journal.pone.0039046\\\\\")
Thomas, 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/meps09370](\\\\\"https://dx.doi.org/10.3354/meps09370\\\\\")
Ward, 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.x](\\\\\"https://dx.doi.org/10.1111/j.1755-263X.2011.00210.x\\\\\")";
String awards_0_award_nid "54955";
String awards_0_award_number "OCE-0550443";
String awards_0_data_url "http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=0550443";
String awards_0_funder_name "NSF Division of Ocean Sciences";
String awards_0_funding_acronym "NSF OCE";
String awards_0_funding_source_nid "355";
String awards_0_program_manager "David L. Garrison";
String awards_0_program_manager_nid "50534";
String cdm_data_type "Other";
String comment
"Seal data measured at time of capture, San Juan Islands, 2007-2008
Lead PI: Alejandro Acevedo-Gutierrez
Version: 26 Nov 2012";
String Conventions "COARDS, CF-1.6, ACDD-1.3";
String creator_email "info@bco-dmo.org";
String creator_name "BCO-DMO";
String creator_type "institution";
String creator_url "https://www.bco-dmo.org/";
String data_source "extract_data_as_tsv version 2.3 19 Dec 2019";
String date_created "2012-11-26T17:41:32Z";
String date_modified "2019-08-01T18:59:42Z";
String defaultDataQuery "&time<now";
String doi "10.1575/1912/bco-dmo.3794.1";
String history
"2024-12-26T07:44:15Z (local files)
2024-12-26T07:44:15Z https://erddap.bco-dmo.org/erddap/tabledap/bcodmo_dataset_3794.html";
String infoUrl "https://www.bco-dmo.org/dataset/3794";
String institution "BCO-DMO";
String keywords "age, bco, bco-dmo, biological, biopsy, blood, chemical, comment, data, dataset, date, day, dmo, erddap, inst, inst2, inst3, lactating, length, management, molt, month, num, num2, num3, oceanography, office, pelage, pregnant, preliminary, pttno, region, seal, seal_id, season, serial, serial_num, serial_num2, serial_num3, sex, site, time, weight, year";
String license "https://www.bco-dmo.org/dataset/3794/license";
String metadata_source "https://www.bco-dmo.org/api/dataset/3794";
String param_mapping "{'3794': {}}";
String parameter_source "https://www.bco-dmo.org/mapserver/dataset/3794/parameters";
String people_0_affiliation "Western Washington University";
String people_0_affiliation_acronym "WWU";
String people_0_person_name "Alejandro Acevedo-Gutierrez";
String people_0_person_nid "51487";
String people_0_role "Lead Principal Investigator";
String people_0_role_type "originator";
String people_1_affiliation "United States Geological Survey";
String people_1_affiliation_acronym "USGS";
String people_1_person_name "Jeffrey F Bromaghin";
String people_1_person_nid "51491";
String people_1_role "Co-Principal Investigator";
String people_1_role_type "originator";
String people_2_affiliation "Washington Department of Fish and Wildlife";
String people_2_person_name "Steven J Jeffries";
String people_2_person_nid "51489";
String people_2_role "Co-Principal Investigator";
String people_2_role_type "originator";
String people_3_affiliation "University of Alaska, Anchorage";
String people_3_affiliation_acronym "UAA";
String people_3_person_name "John M Kennish";
String people_3_person_nid "51490";
String people_3_role "Co-Principal Investigator";
String people_3_role_type "originator";
String people_4_affiliation "Washington Department of Fish and Wildlife";
String people_4_person_name "Monique M Lance";
String people_4_person_nid "51488";
String people_4_role "Co-Principal Investigator";
String people_4_role_type "originator";
String people_5_affiliation "National Marine Fisheries Service";
String people_5_affiliation_acronym "NMFS";
String people_5_person_name "Philip S Levin";
String people_5_person_nid "51492";
String people_5_role "Co-Principal Investigator";
String people_5_role_type "originator";
String people_6_affiliation "Woods Hole Oceanographic Institution";
String people_6_affiliation_acronym "WHOI BCO-DMO";
String people_6_person_name "Shannon Rauch";
String people_6_person_nid "51498";
String people_6_role "BCO-DMO Data Manager";
String people_6_role_type "related";
String project "Seal_response_to_prey";
String projects_0_acronym "Seal_response_to_prey";
String projects_0_description
"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.";
String projects_0_end_date "2012-03";
String projects_0_geolocation "Salish Sea, USA and Canada";
String projects_0_name "Responses of Seals and Sea Lions to Increased Rockfish Density";
String projects_0_project_nid "2205";
String projects_0_project_website "http://biol.wwu.edu/mbel/?page=research";
String projects_0_start_date "2006-04";
String publisher_name "Biological and Chemical Oceanographic Data Management Office (BCO-DMO)";
String publisher_type "institution";
String sourceUrl "(local files)";
String standard_name_vocabulary "CF Standard Name Table v55";
String subsetVariables "lactating,blood,biopsy";
String summary "Physical and identifying info for Harbor Seals tagged and tracked in the San Juan Islands from 2007 to 2008; includes sex, length, weight, pelage description, and tag ID numbers.";
String title "[seal_ID_info] - Physical data (sex, weight, tag ID number) from Harbor Seals tagged in the San Juan Islands, 2007-2008 (Responses of Seals and Sea Lions to Increased Rockfish Density)";
String version "1";
String xml_source "osprey2erddap.update_xml() v1.3";
}
}
Data Access Protocol (DAP) and its
selection constraints.
The URL specifies what you want: the dataset, a description of the graph or the subset of the data, and the file type for the response.
Tabledap request URLs must be in the form
https://coastwatch.pfeg.noaa.gov/erddap/tabledap/datasetID.fileType{?query}
For example,
https://coastwatch.pfeg.noaa.gov/erddap/tabledap/pmelTaoDySst.htmlTable?longitude,latitude,time,station,wmo_platform_code,T_25&time>=2015-05-23T12:00:00Z&time<=2015-05-31T12:00:00Z
Thus, the query is often a comma-separated list of desired variable names,
followed by a collection of
constraints (e.g., variable<value),
each preceded by '&' (which is interpreted as "AND").
For details, see the tabledap Documentation.