{
  "type": "Collection",
  "stac_version": "1.0.0",
  "stac_extensions": ["https://stac-extensions.github.io/table/v1.2.0/schema.json", "https://stac-extensions.github.io/scientific/v1.0.0/schema.json"],
  "id": "cce-lter_euphausiids",
  "title": "CCE-LTER Euphausiid Abundance",
  "description": "Species- and life-stage-resolved euphausiid (krill) abundance from CalCOFI / CCE-LTER net tows (BTEDB export), 1951-present, one row per tow x species x life stage. Supersedes the prior single-Abundance- column ingest, which had no taxonomic scope (Q02, now resolved) — units remain provisional pending provider confirmation (Q01).\n",
  "keywords": ["EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > AQUATIC ECOSYSTEMS > PLANKTON > ZOOPLANKTON", "EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES > ARTHROPODS > CRUSTACEANS > EUPHAUSIIDS (KRILL)"],
  "license": "custom",
  "providers": [
    {
      "name": "California Current Ecosystem Long Term Ecological Research",
      "roles": ["producer", "licensor"],
      "url": "https://ccelter.ucsd.edu"
    },
    {
      "name": "CalCOFI",
      "roles": ["processor", "host"],
      "url": "https://calcofi.io"
    }
  ],
  "extent": {
    "spatial": {
      "bbox": [
        [-133.467, 28, -117.283, 46.6]
      ]
    },
    "temporal": {
      "interval": [
        [
          "1951-01-01T00:00:00Z",
          "2019-12-31T23:59:59Z"
        ]
      ]
    }
  },
  "sci:doi": "10.6073/pasta/4a92a0044bcd1523a4f994ece874a57d",
  "sci:citation": "Ohman, M.D. 2022. California Current Ecosystem Euphausiid data, Brinton and Townsend Euphausiid Database (BTEDB) ver 1. Environmental Data Initiative. https://doi.org/10.6073/pasta/4a92a0044bcd1523a4f994ece874a57d",
  "table:tables": [
    {
      "name": "sample",
      "description": "One row per physical sampling event at its native grain (site, tow, net, cast, bottle, underway, transect, region pool). An adjacency list: `parent_sample_key` points at the containing event and `root_sample_key` at the top of the chain, so counting distinct events at any level is a single `GROUP BY`."
    },
    {
      "name": "obs",
      "description": "The occurrence-headline long table: one scalar measurement per row, environmental (`realm = 'env'`) and biological (`realm = 'bio'`) together. Biological taxon is the global `taxon_key`; sub-occurrence detail (length/stage bins, behavior) lives in `obs_attribute`, and event-level effort in `sample_measurement`."
    },
    {
      "name": "taxon",
      "description": "Taxonomic hierarchy for species via WoRMS and ITIS authorities (built from spp.duckdb via recursive CTEs)"
    },
    {
      "name": "dataset_taxon",
      "description": "Crosswalk from each dataset's own taxon vocabulary to the global `taxon_key`. `obs` resolves its taxon by joining this on (`dataset_key`, `ds_taxa_code`), so a dataset can keep its local codes without leaking them into the shared model."
    },
    {
      "name": "measurement_type"
    }
  ],
  "summaries": {
    "calcofi:category": ["Euphausiids (Krill)"],
    "calcofi:variables": ["euphausiid_abundance", "numberPerMeterSquared", "Euphausiids (Krill)"]
  },
  "links": [
    {
      "rel": "root",
      "href": "https://storage.googleapis.com/calcofi-db/stac/catalog.json",
      "type": "application/json"
    },
    {
      "rel": "parent",
      "href": "https://storage.googleapis.com/calcofi-db/stac/catalog.json",
      "type": "application/json"
    },
    {
      "rel": "self",
      "href": "https://storage.googleapis.com/calcofi-db/stac/collections/cce-lter_euphausiids/collection.json",
      "type": "application/json"
    },
    {
      "rel": "about",
      "href": "https://calcofi.io/datasets/cce-lter_euphausiids/",
      "type": "text/html",
      "title": "Dataset page"
    },
    {
      "rel": "license",
      "href": "https://portal.edirepository.org/nis/metadataviewer?packageid=knb-lter-cce.313.1",
      "type": "text/html",
      "title": "Custom terms stated by the provider"
    },
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      "rel": "cite-as",
      "href": "https://doi.org/10.6073/pasta/4a92a0044bcd1523a4f994ece874a57d",
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}