Fish diversity in southern California using trawl data from the National Marine Fisheries Service

Description

The Shannon Index of diversity was calculated from National Marine Fisheries Service Groundfish Survey Program (NMFS GSP) fish trawl data. Data from 477 fishery independent trawls ranging from 55-1200 m in depth were collected June-November in 1977, 1989, 1992, 1995, and 1997-2002. Including all fish identified to the species level resulted in 189 fish species. Using ArcGIS, 5 x 5 minute grids were created and mean diversity was calculated for each grid cell containing data. Gear included a nor'eastern trawl (127 mm stretched-mesh body; 89 mm stretched-mesh codend; and 32 mm stretched-mesh codend liner) with a rubber bobbin roller which was trawled for 15-30 minutes on the bottom. Zimmerman's (2003) analysis of benthic species biomass was used to cull out the trawls that did not fish the bottom.

Resources

Name Format Description Link
57 Downloadable Data http://coastalscience.noaa.gov/datasets/ccma/biogeo/cinms/Chap_4_Data/NMFS_fish_div_5min.ZIP
57 Online Resource http://coastalscience.noaa.gov/datasets/ccma/biogeo/cinms/Chap_4_Data/NMFS_fish_div_5min.ZIP
0 View the complete metadata record on InPort for more information about this dataset. https://www.fisheries.noaa.gov/inport/item/38936
0 Online Resource http://ccma.nos.noaa.gov/ecosystems/sanctuaries/chanisl_nms/
0 Online Resource http://ccma.nos.noaa.gov/products/biogeography/cinms/data/
0 The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. https://www.earthdata.nasa.gov/learn/find-data/idn/gcmd-keywords
33 NOAA Data Management Plan for this record on InPort. https://www.fisheries.noaa.gov/inportserve/waf/noaa/nos/nccos/dmp/pdf/38936.pdf

Tags

  • human dimensions
  • united states of america
  • use/feeding habitats
  • environmental governance/management
  • benthic
  • national ocean service
  • ecosystems
  • national centers for coastal ocean science
  • biosphere
  • community dynamics
  • oceans
  • environmental monitoring
  • continent
  • noaa
  • biological classification
  • marine ecosystems
  • environmental assessments
  • north america
  • earth science services
  • cinms_assessment
  • fish
  • u.s. department of commerce
  • animals/vertebrates
  • earth science
  • california
  • polygons
  • doc/noaa/nos/nccos
  • marine biology
  • southern california
  • community structure
  • pelagic
  • models
  • channel islands national marine sanctuary
  • ecosystem functions
  • ecological dynamics
  • geographic information
  • species/population interactions
  • dynamic vegetation/ecosystem models

Topics

Categories