DOI: 10.5061/dryad.w0vt4b92x
title: Data from: Composition and functional diversity of juvenile groundfish assemblages in the California current

description: This dataset is a collation of young-of-the year juvenile groundfish data
 from pelagic trawl surveys operated by NOAA Southwest Fisheries Science
 Center's Rockfish Recruitment & Ecosystem Assessment Survey
 and NOAA Northwest Fisheries Science Center's Pre-Recruit survey.
 These annual surveys respectively cover portions of the California Current
 Large Marine Ecosystem from 1990-2023 and 2011-2023. These data were used
 to calculate a suite of compositional and functional biodiversity metrics
 and test prevailing hypotheses related to biogeography in the California
 Current. See Gasbarro et al. (2025) for complete description of sampling
 methods and processing. Each row of data contains the average
 catch-per-unit effort (CPUE) of all hauls at a given station in a given
 year for each species, a suite of compositoinal and functional
 biodiversity metrics calculated from CPUE data, and associated metadata
 for each sample. See the README file for a detailed description of the
 data contained in each column. 
description: # Data from: Composition and functional diversity of juvenile groundfish
 assemblages in the California current
 [https://doi.org/10.5061/dryad.w0vt4b92x](https://doi.org/10.5061/dryad.w0vt4b92x) ## Description of the data and file structure ### Files and variables #### File: YOYGroundfishBiodiv\_Data.csv **Description:**  ##### Variables * YEAR_STATION: Unique identifier for each sample representing year & station of sampling * YEAR: Sample Year * STATION: Sample station number * WOLF_EEL: Taxon CPUE (log + 1) * SABLEFISH: Taxon CPUE (log + 1) * ARROWTOOTH_FLOUNDER: Taxon CPUE (log + 1) * PACIFIC_SANDDAB: Taxon CPUE (log + 1) * SPECKLED_SANDDAB: Taxon CPUE (log + 1) * SCULPIN: Taxon CPUE (log + 1) * REX_SOLE: Taxon CPUE (log + 1) * GREENLING: Taxon CPUE (log + 1) * SLENDER_SOLE: Taxon CPUE (log + 1) * PACIFIC_HAKE: Taxon CPUE (log + 1) * DOVER_SOLE: Taxon CPUE (log + 1) * LINGCOD: Taxon CPUE (log + 1) * PAINTED_GREENLING: Taxon CPUE (log + 1) * RIGHT_EYED_FLATFISH: Taxon CPUE (log + 1) * TURBOT: Taxon CPUE (log + 1) * SAND_SOLE: Taxon CPUE (log + 1) * CABEZON: Taxon CPUE (log + 1) * BROWN_ROCKFISH: Taxon CPUE (log + 1) * DARKBLOTCHED_ROCKFISH: Taxon CPUE (log + 1) * CALICO_ROCKFISH: Taxon CPUE (log + 1) * SPLITNOSE_ROCKFISH: Taxon CPUE (log + 1) * GREENSTRIPED_ROCKFISH: Taxon CPUE (log + 1) * WIDOW_ROCKFISH: Taxon CPUE (log + 1) * YELLOWTAIL_ROCKFISH: Taxon CPUE (log + 1) * CHILIPEPPER: Taxon CPUE (log + 1) * SQUARESPOT_ROCKFISH: Taxon CPUE (log + 1) * SHORTBELLY_ROCKFISH: Taxon CPUE (log + 1) * COWCOD: Taxon CPUE (log + 1) * BLACK_ROCKFISH: Taxon CPUE (log + 1) * BLACKGILL_ROCKFISH: Taxon CPUE (log + 1) * BLUE_ROCKFISH: Taxon CPUE (log + 1) * BOCACCIO: Taxon CPUE (log + 1) * CANARY_ROCKFISH: Taxon CPUE (log + 1) * YELLOWMOUTH_ROCKFISH: Taxon CPUE (log + 1) * YELLOWEYE_ROCKFISH: Taxon CPUE (log + 1) * BANK_ROCKFISH: Taxon CPUE (log + 1) * STRIPETAIL_ROCKFISH: Taxon CPUE (log + 1) * HALFBANDED_ROCKFISH: Taxon CPUE (log + 1) * OLIVE_ROCKFISH: Taxon CPUE (log + 1) * PYGMY_ROCKFISH: Taxon CPUE (log + 1) * SHARPCHIN_ROCKFISH: Taxon CPUE (log + 1) * ROCKFISH: Taxon CPUE (log + 1) * ROSY_ROCKFISH_GROUP: Taxon CPUE (log + 1) * PACIFIC_TOMCOD: Taxon CPUE (log + 1) * COPPER_ROCKFISH_GROUP: Taxon CPUE (log + 1) * IRISH_LORD: Taxon CPUE (log + 1) * sdiv: Shannon-Weiner Diversity Index * nspec: Species Richness * eve: Pielou's Evenness (J); NA values present where &lt;2 taxa are present.  * LCBD: Local Contributions to Beta Diversity * LONDD: Longitude in decimal degrees * LATDD: Latitude in decimal degrees * PROVINCE: California Current biogeographic province (North, Central, or South) * SURVEY: Survey on which the sample occurred (RREAS or NWFSC) * CRUISE: Unique cruise identifier * STATION_BOTTOM_DEPTH: Bottom depth of station * AREA: Geographic area of station * ACTIVE: Binary; is station active (1) or not (0) * clust_6: Assemblage cluster assigned to sample * core: Binary; is sample inside 'Core' region (1) or not (0) * cpue: Total CPUE across species * MDS1: Sample location on first axis of compositional NMDS * MDS2: Sample location on second axis of compositional NMDS * MDS3: Sample location on third axis of compositional NMDS * centroid_distance: Euclidean distance in NMDS space of sample to the regional (by Province) climatological centroid * rar50: Rarefied (50 individuals) species richness  * fMDS1: Sample location on first axis of functional trait NMDS; NA values present in samples with &lt;5 taxa. * fMDS2: Sample location on second axis of functional trait NMDS; NA values present in samples with &lt;5 taxa. * fMDS3: Sample location on third axis of functional trait NMDS; NA values present in samples with &lt;5 taxa. * centroid_distance_fd: Euclidean distance in functional NMDS space of sample to the regional (by Province) climatological centroid; NA values present in samples with &lt;5 taxa. * feve: Functional Evenness; NA values present in samples with &lt;5 taxa. * fric: Functional Richness; NA values present in samples with &lt;5 taxa. * fdiv: Functional Divergence; NA values present in samples with &lt;5 taxa. ## Access information Raw trawl data from RREAS is available on ERRDAP ([https://coastwatch.pfeg.noaa.gov/erddap/tabledap/FED_Rockfish_Catch.html](https://coastwatch.pfeg.noaa.gov/erddap/tabledap/FED_Rockfish_Catch.html)) and can be accessed using the ‘RREAS’ R package ([https://github.com/tanyalrogers/RREAS](https://github.com/tanyalrogers/RREAS)). Raw trawl data from the NOAA Northwest Fisheries Science Center’s pre-recruit survey is available upon reasonable request. Functional trait data from the Pelagic Species Traits database (Glieber et al. 2024a) can be accessed at the following URL: [https://borealisdata.ca/dataset.xhtml?persistentId=doi:10.5683/SP3/0YFJED](https://borealisdata.ca/dataset.xhtml?persistentId=doi:10.5683/SP3/0YFJED).