Global fisheries landings supplied by a number of agencies (FAO/UN, CCAMLR, NAFO, ICES etc) are mapped to 30-min spatial
cells based on the range/gradient of the reported taxon, the spatial access of the reporting country's fleets, and the
original reporting area. This data is associated with types of fishing gears. Estimates of illegal, unreported and unallocated
landings are included as are estimates of the weight of fisheries products discarded at sea. Mapping the source of fisheries
capture allows investigation of the impacts of fishing and the vulnerability of fishing (with its associate food security
implications) to climate change impacts.
This is the most current version of the Global Fisheries Landings dataset.
Annual data on fisheries landings (referred to here as 'reported' landings) was sourced from public sources (FAO/UN (and
their regional agencies), CCAMLR, ICES and NAFO), which were coded and mapped to 30-spatial cells. Some adjustment was made
when the identity or locations provided were not possible. There was an attempt to provide the fullest taxonomic breakdown
of what were sometimes highly aggregated reporting groups using records of countries providing better breakdowns in the same
fished waters. Then, using information on the range and distribution of commercial species, the known and allowable fishing
access patterns of country fleets, and the collection of 30-min spatial cells in the original data provided, each record
was mapped to the most likely collection of 30-min spatial cells and prorated by the fished taxon's abundance or other spatial
information such as the spatial fishing records of fleets (such as for tuna). Based on known fishing gear associations with
the capture of species by country and year, the data were prorated to the type of fishing gear likely used. Precision varies
as some data such as that provided by ICES for waters of the northeast Atlantic is reported by relatively small statistical
reporting areas and is intensely reviewed as source. Some data from FAO (UN) is provided in very large reporting areas covering
large areas of the Pacific therefore the spatial precision is dependent on the accuracy of accepted ranges of the fishing
taxa and what is known about the spatial access of the reporting country's fleets to the inshore areas which lie within
the 'exclusive economic zone' claims of coastal nations.
From the mapped global 'reported' landings it was possible to estimate the associated catch rates of 'IUU" - or the missing
illegal, unreported and unregulated landings using published rates . Similarly the catch rate of discarded fauna (not
usually the same animals as commercially sought) were also estimated from published rates . Finally there is an estimate
of landings by 'small scale fisheries' (SSF) using data using reported rates . Estimates of what SSF was already included
in the reported harmonised landings were based on each countries corruption index. SSF already reported in the 'reported
landings' were adjusted accordingly.
1. Agnew DJ, Pearce J, Pramod G, Peatman T, Watson R, Beddington JR, et al. Estimating the worldwide extent of illegal fishing.
PLoS One. 2009;4(2):e4570. doi: 10.1371/journal.pone.0004570.1.
2. Kelleher K. Discards in the world’s marine fisheries. An update. Rome: FAO, 2005
3. Chuenpagdee R, Liguori L, Palomares MLD, Pauly D. Bottom up, global estimates of small-scale marine fisheries catches.
Vancouver, Canada: University of British Columbia, 2006