{
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    "release_date": "2026-10-13",
    "doi": null,
    "concept_doi": "10.5281/zenodo.22281994",
    "citation": "CalCOFI (2026). CalCOFI Integrated Database, release v2026.10.13 [Data set]. Scripps Institution of Oceanography, NOAA Fisheries, and California Department of Fish and Wildlife. https://calcofi.io/db-schema/?v=v2026.10.13",
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    "dataset_key": "cdfw_dungeness-crab",
    "provider": {
      "key": "cdfw",
      "short": "CDFW",
      "name": "California Department of Fish and Wildlife",
      "url": "https://wildlife.ca.gov",
      "registered": true
    },
    "dataset": "dungeness-crab",
    "dataset_name": "CDFW Dungeness Crab Megalopae",
    "dataset_name_short": "Dungeness Crab Megalopae",
    "category": {
      "name": "Zooplankton",
      "realm": "bio",
      "icon": "cat-zooplankton",
      "order": 8,
      "description": "Net-tow zooplankton: displacement volume, imaged and identified taxa, decapod larvae",
      "registered": true
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    "visibility": "public",
    "description_md": "Dungeness crab (Metacarcinus magister) megalopae and larval decapods picked from archived CalCOFI oblique-tow plankton samples, examined for the California Department of Fish and Wildlife. Two efforts: a 2008-2014 time series of 310 sorted samples (A. Klemmedson, 2015) yielding 24 M. magister megalopae from 14 samples, and 216 archived samples from the 1949-2009 sorting log that were examined and found free of M. magister (1984-2009, E. Jones, as of 2012-02-15). Only examined samples are published — the log's remaining unsorted rows are a fact of the archive's inventory, not a sample of this dataset. Spring cruises, CalBOBL oblique tows, lines < 80 / stations < 90. Counts are occurrence in the examined aliquot, not standardized density. Sorting was performed at the SIO Pelagic Invertebrate Collection, where the removed megalopae are archived in vials.\n",
    "keywords": ["EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > AQUATIC ECOSYSTEMS > PLANKTON > ZOOPLANKTON", "EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES > ARTHROPODS > CRUSTACEANS > DECAPODS", "Invertebrate Abundance and Diversity", "Zooplankton Biomass and Diversity", "CalCOFI Network"],
    "attribution": {
      "citation_main": "Rogers-Bennett, L.; Jones, E.; Klemmedson, A. (2026). CDFW Dungeness Crab Megalopae from archived CalCOFI plankton samples (1949-2014). California Department of Fish and Wildlife, published through CalCOFI / Scripps Institution of Oceanography.\n",
      "citation_others": [],
      "doi": null,
      "license": "CC-BY-4.0",
      "license_name": "Creative Commons Attribution 4.0 International",
      "license_url": "https://creativecommons.org/licenses/by/4.0/",
      "acknowledgement": null,
      "contact": null,
      "pi_names": ["Laura Rogers-Bennett"],
      "creators": [
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          "name": "Laura Rogers-Bennett",
          "organization": "California Department of Fish and Wildlife (CDFW)",
          "orcid": null,
          "email": null,
          "role": "lead"
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      "funding": null,
      "source_accessed": "2026-10-05"
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      "calcofi_org": null,
      "data_source": "https://data.cnra.ca.gov/dataset/sorting-effort-in-2012-and-2015-for-dungeness-crab-megalopae-in-calcofi-plankton-samples",
      "workflow": "https://calcofi.io/workflows/ingest_cdfw_dungeness-crab.html",
      "page": "https://calcofi.io/datasets/cdfw_dungeness-crab/"
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      "temporal": "1984-05 to 2014-05",
      "year_min": 1984,
      "year_max": 2014,
      "years": [
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          "year": 1984,
          "n_obs": 24,
          "n_roots": 24
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          "n_obs": 10,
          "n_roots": 10
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        {
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          "n_obs": 7,
          "n_roots": 7
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        {
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          "n_obs": 13,
          "n_roots": 13
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        {
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          "n_obs": 15,
          "n_roots": 15
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        {
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          "n_obs": 55,
          "n_roots": 55
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        {
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          "n_obs": 7,
          "n_roots": 7
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        {
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          "n_obs": 189,
          "n_roots": 102
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        {
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          "n_obs": 120,
          "n_roots": 39
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        {
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          "n_roots": 71
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          "n_obs": 164,
          "n_roots": 41
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          "n_obs": 164,
          "n_roots": 39
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        {
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          "n_obs": 180,
          "n_roots": 45
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        {
          "year": 2014,
          "n_obs": 220,
          "n_roots": 55
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      "spatial": "33.5–51.0°N, 132.2–120.7°W",
      "bbox": {
        "lat_min": 33.46,
        "lat_max": 51.05,
        "lon_min": -132.25,
        "lon_max": -120.675
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      "bbox_robust": {
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        "lon_max": -120.916499675,
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      "n_variables": 1,
      "n_taxa": 3,
      "depth_min_m": 0,
      "depth_max_m": 223,
      "variables": [
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          "name": "abundance",
          "units": "count",
          "uri": null,
          "category": "Fish Eggs & Larvae"
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      ],
      "taxa": [
        {
          "taxon_key": "worms:1130",
          "scientific_name": "Decapoda",
          "common_name": "decapods",
          "rank": "Order",
          "n_obs": 620
        },
        {
          "taxon_key": "worms:440388",
          "scientific_name": "Metacarcinus magister",
          "common_name": "Dungeness crab",
          "rank": "Species",
          "n_obs": 526
        },
        {
          "taxon_key": "worms:106749",
          "scientific_name": "Cancridae",
          "common_name": "rock crabs",
          "rank": "Family",
          "n_obs": 310
        }
      ],
      "life_stages": ["megalopa", "zoea"],
      "contributes_to": []
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        "title": "CDFW Dungeness Crab Megalopae - length/stage frequency",
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        "url": "https://erddap.calcofi.io/erddap/metadata/iso19115/xml/cdfw_dungeness-crab_iso19115.xml",
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        "id": "cdfw_dungeness-crab",
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        "url": "https://calcofi.io/workflows/ingest_cdfw_dungeness-crab.html",
        "format": "html",
        "title": "ingest notebook",
        "status": "current"
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      {
        "kind": "source",
        "url": "https://data.cnra.ca.gov/dataset/sorting-effort-in-2012-and-2015-for-dungeness-crab-megalopae-in-calcofi-plankton-samples",
        "portal": "other",
        "title": "source",
        "status": "external"
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      {
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        "url": "https://library.ucsd.edu/dc/search?q=CalCOFI+Dungeness+crab+megalopae",
        "portal": "ucsd-library",
        "title": "UCSD Library Research Data Collections deposit (pending)",
        "status": "planned",
        "observed_utc": "2026-09-05T00:00:00Z",
        "notes": "deposit made 2026-08-27, DOI not yet minted (questions.csv Q14); the URL is the placeholder search"
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    "registrations": [
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        "status": "published",
        "url": "https://erddap.calcofi.io/erddap/info/cdfw_dungeness-crab/index.html",
        "id": "cdfw_dungeness-crab",
        "issues": []
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      {
        "portal": "obis",
        "status": "planned",
        "issues": []
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      {
        "portal": "edi",
        "status": "n/a",
        "issues": []
      },
      {
        "portal": "ncei",
        "status": "n/a",
        "issues": []
      },
      {
        "portal": "caloos",
        "status": "planned",
        "issues": []
      },
      {
        "portal": "zenodo",
        "status": "published",
        "url": "https://doi.org/10.5281/zenodo.22281994",
        "id": "10.5281/zenodo.22281994",
        "title": "CalCOFI Integrated Database (the release deposit)",
        "note": "as part of the integrated database release"
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    "status": {
      "stage": "ingested",
      "priority": "nice-to-have",
      "gh_issue": null,
      "blockers": "IN THE RELEASE since 2026-08-14 (CC BY 4.0, Q01 answered). 2026-09-03: cut over to EXAMINED SAMPLES ONLY — the core now publishes 526 events (310 sorted time-series subsamples + 216 examined sorting-log tows), down from 2,321; the 1,795 unsorted log rows are dropped from the core entirely (an unexamined archived jar is a fact of the deposit's sorting-log inventory, not a sample of this dataset) and no longer ship as effort-only sample rows. Emits the consolidated core (sample 526 / obs 1456 / obs_attribute 24 / sample_measurement 617 / taxon 17 / dataset_taxon 3) via the generic append_* helpers in-notebook. Coverage now measures 1984-05-17 to 2014-05-03 (was 1949-2014 including unsorted effort). 3 xlsx sources -> 310 examined samples 2008-2014 (24 M. magister megalopae, 15 removal vials / 14 samples) + 216 examined-and-empty sorting-log tows 1984-2009 + 5 verification specimens; station match 306/310 via swfsc_ichthyo. link_data_source is a placeholder UCSD Library RDC search URL pending the deposit's DOI (Q14, new). Q05 open: new sample_type=subsample + cross-dataset parent_sample_key. Q08 (positive-longitude sign error) affects only a dropped unsorted row; deposit README reportedly corrects it — reconcile once the deposit zips are in Drive (Ben, before 2026-09-26).",
      "publish_policy": "Archive of record: UC San Diego Library Digital Collections deposit (CDFW's data, sorted at SIO). EDI does not apply; OBIS planned (Darwin Core Archive of the 24 megalopae occurrences built and staged each release; the upload is CDFW's call).",
      "updated": "2026-09-07",
      "questions_open": 9,
      "questions_dataset": [
        {
          "label": "Q14",
          "field": "link_data_source",
          "status": "open"
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}