{"@context":{"content":"http://purl.org/rss/1.0/modules/content/","dc":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","og":"http://ogp.me/ns#","rdfs":"http://www.w3.org/2000/01/rdf-schema#","sioc":"http://rdfs.org/sioc/ns#","sioct":"http://rdfs.org/sioc/types#","skos":"http://www.w3.org/2004/02/skos/core#","xsd":"http://www.w3.org/2001/XMLSchema#","owl":"http://www.w3.org/2002/07/owl#","rdf":"http://www.w3.org/1999/02/22-rdf-syntax-ns#","rss":"http://purl.org/rss/1.0/","site":"https://osprey.bco-dmo.org/ns#","odo":"http://ocean-data.org/schema/","emo":"http://ocean-data.org/schema/entity-matching#","bibo":"http://purl.org/ontology/bibo/","crypto":"http://id.loc.gov/vocabulary/preservation/cryptographicHashFunctions/","bcodmo":"http://lod.bco-dmo.org/id/","tw":"http://tw.rpi.edu/schema/","dcat":"http://www.w3.org/ns/dcat#","time":"http://www.w3.org/2006/time#","geo":"http://www.w3.org/2003/01/geo/wgs84_pos#","geosparql":"http://www.opengis.net/ont/geosparql#","sf":"http://www.opengis.net/ont/sf#","void":"http://rdfs.org/ns/void#","sd":"http://www.w3.org/ns/sparql-service-description#","dctype":"http://purl.org/dc/dcmitype/","prov":"http://www.w3.org/ns/prov#","schema":"http://schema.org/","geolink":"http://schema.geolink.org/1.0/base/main#","spdx":"http://spdx.org/rdf/terms#","bcodmo_vocab":"http://schema.bco-dmo.org/"},"@id":"http://lod.bco-dmo.org/id/dataset/701751#graph","@graph":[{"http://lod.bco-dmo.org/id/dataset/701751":{"@id":"http://lod.bco-dmo.org/id/dataset/701751","@type":["http://ocean-data.org/schema/DeploymentDatasetCollection","http://www.w3.org/ns/dcat#Dataset","http://ocean-data.org/schema/Dataset"],"http://ocean-data.org/schema/hasAcquisitionDescription":[{"@value":"

We conducted monthly trappings of invasive European green crabs to gather demographic data from several bays in northern California: Bodega Harbor, Tomales Bay, Bolinas Lagoon, San Francisco Bay, and Elkhorn Slough. All sites were accessed by foot via shore entry. At each of four sites within each bay, we placed 5 baited traps (folding Fukui fish traps) and 5 baited minnow traps in shallow intertidal areas. Traps arrays were set with fish and minnow traps alternating and with each 20 m apart. Traps were retrieved 24 hours later and traps were rebaited and collected again the following day.\u00a0Trapping was continued for three consecutive days with traps removed on the final day.\u00a0Each day, data for crab species, size, sex, reproductive condition, and injuries were collected for all crabs in the field. Following data collection, all crabs were returned to the lab, and frozen overnight prior to disposal.\u00a0

\n

See Turner et al. (2016)\u00a0for additional methodological details.

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Demographic data for introduced crab from multiple bays along the Central California coast, shallow subtidal (<3 m depth), from 2009-2016.

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Data were entered and checked in MS Excel spreadsheets.\u00a0Statistical analyses were run with either (R Development Core Team) or SAS (Statistical Analysis Systems).

\n

BCO-DMO Processing:
\nv1 (2017-06-15):
\n- re-formatted date to yyyy-mm-dd;
\n- modified parameter names to conform with BCO-DMO naming conventions (changed to lowercase from mixed case);
\n- created lat and lon columns and added values from metadata page;\u00a0
\n- created column for full species names and added names corresponding to each code from metadata page; changed 'species' column provided to 'species_code';
\n- replaced blanks (missing data) with 'nd';
\n- replaced commas with semi-colons;
\n- replaced spaces with underscores.

\n

v2 (2021-03-16):
\n- replaced version 1 of dataset with version 2, which includes a longer time series of data;
\n- replaced commas with semi-colons in the injury column;
\n- removed apostrophes from the site column;
\n- converted all dates to YYYY-MM-DD format.

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