DATASET

Ocean Productivity available to Fish (OPFish) - Global Ocean ANNUAL - 2003-2020 (% of daily favorable occurrence, 1/24° by 1/24°)

Collection: GMIS : Global Marine Information System 

Description

As a proxy for potential fish production, the Ocean Productivity available to Fish (OPFish) was successfully tested against commercial and scientific spatial fisheries datasets in the European Seas, notably in detecting local overfishing. The OPFish uses the productivity frontal features derived from chlorophyll-a horizontal gradients, which characterize 10-20% of the global phytoplankton production that effectively fuels higher trophic levels . This satellite-derived proxy of potential fish feeding was shown to greatly facilitate the identification of local fishing opportunities by quantifying the useful fraction of plankton production that could support fisheries catches. More information: https://fishreg.jrc.ec.europa.eu/fish-habitat

OPFish was calculated using daily chlorophyll-a (mg.m−3) data from the MODIS-Aqua ocean color sensor (2003–2016; 1/24° resolution) and the Ocean Color Index (OCI) algorithm (Hu et al., 2012). These data was extracted from the NASA portal (https://oceancolor.gsfc.nasa.gov/l3/) with the archive reprocessing of January 2018. The OPFish has daily values from 0 to 1 following the equation:

OPFish = C_g * C_r * DL

(see details in Druon et al. 2021) where OPFish = Ocean Productivity available to Fish (potential fish production in relative level),

Cg = linear function derived from the norm of the horizontal gradient of chlorophyll-a, from 0 to 1,

Cr = value 1 if within the suitable chlorophyll-a range, and 0 otherwise,

DL = relative day length duration from 0 to 1 (day length in hours divided by 24). Hu, C., Lee, Z., & Franz, B. (2012). Chlorophyll a algorithms for oligotrophic oceans: A novel approach based on three-band reflectance difference. Journal of Geophysical Research: Oceans, 117, 1–25. doi:10.1029/2011JC007395 Druon JN, Gascuel D, Gibin M, Zanzi A, Fromentin JM, Colloca F, Hélaouët P, Coll M, Mannini A, Bluemel J, Piroddi C, Bastardie F, Macias-Moy D, Vasilakopoulos P, Winker H, Serpetti N, Guillen J, Palialexis A, Gras M, Hekim Z, Dubroca L, Pinto C, Steenbeeck J and Martinsohn J

(2021) Mesoscale productivity fronts and local fishing opportunities in the European Seas. Fish and Fisheries, 00, 1-21, DOI:10.1111/faf.12585 https://onlinelibrary.wiley.com/doi/full/10.1111/faf.12585

Contact

Email
jean-noel.druon (at) ec.europa.eu

Contributors

  • Jean-Noel Druon

How to cite

Druon, Jean-Noel (2021): Ocean Productivity available to Fish (OPFish) - Global Ocean ANNUAL - 2003-2020 (% of daily favorable occurrence, 1/24° by 1/24°) . European Commission, Joint Research Centre (JRC) [Dataset] PID: http://data.europa.eu/89h/a82f0745-6181-4918-9aef-e4dee6149ac6

Keywords

Fisheries Ocean color Climate change Demersal fishing gears Feeding Habitat Environmental monitoring Fish production Eutrophication Fishing Restricted Area Marine protected area GIS digital format Overfishing Satellite observations Pelagic fishing gears

Data access

Ocean Productivity available to Fish (OPFish) - Global Ocean ANNUAL - 2003-2020
URL 
  • As a proxy for potential fish production, the Ocean Productivity available to Fish (OPFish) was successfully tested against commercial and scientific spatial fisheries datasets in the European Seas, notably in detecting local overfishing. The OPFish uses the productivity frontal features derived from chlorophyll-a horizontal gradients, which characterize 10-20% of the global phytoplankton production that effectively fuels higher trophic levels . This satellite-derived proxy of potential fish feeding was shown to greatly facilitate the identification of local fishing opportunities by quantifying the useful fraction of plankton production that could support fisheries catches. More information: https://fishreg.jrc.ec.europa.eu/fish-habitat

Mesoscale productivity fronts and local fishing opportunities in the European Seas
URL 
  • As a proxy for potential fish production, the Ocean Productivity available to Fish (OPFish) was successfully tested against commercial and scientific spatial fisheries datasets in the European Seas, notably in detecting local overfishing. The OPFish uses the productivity frontal features derived from chlorophyll-a horizontal gradients, which characterize 10-20% of the global phytoplankton production that effectively fuels higher trophic levels . This satellite-derived proxy of potential fish feeding was shown to greatly facilitate the identification of local fishing opportunities by quantifying the useful fraction of plankton production that could support fisheries catches. More information: https://fishreg.jrc.ec.europa.eu/fish-habitat

Spatial coverage

Type Value
WKT
POLYGON((-180 90,180 90,180 -90,-180 -90,-180 90))

Temporal coverage

From date To date
2003 2020

Additional information

Published by
European Commission, Joint Research Centre
Created date
2021-07-06
Modified date
2021-07-08
Issued date
2021-07-05
Landing page
http://gmis.jrc.ec.europa.eu/ 
Data theme(s)
Agriculture, fisheries, forestry and food
Update frequency
annual
Identifier
http://data.europa.eu/89h/a82f0745-6181-4918-9aef-e4dee6149ac6
Popularity