What statistical methods allow defining the fishing grounds, using geo-referenced haul-by-haul catch and effort data?
Besides the questions of data availability and statistical methods you should consider that your method should allow management of the resources according to Elionore Ostroms "Designs principles for institutions responsible for common pool resources"!
Trawl footprint method used...
Mayfield et al 2014 http://www.sardi.sa.gov.au/__data/assets/pdf_file/0007/237571/Ecosystem_Trawl_Fisheries_Report_-_FINAL.pdf
thank you all for your suggestions.
How I can statistically demonstrate the persistence of fishing effort in the same local area, week to week, and even more to see that week that persistence is broken?
Why do you want to determine (temporal) variation of fishing effort allocation in the short-term? It is a study about efficiency- skipper skills? Do you have any environmental variables that could explain variation in fishing effort allocation? Or catch yield per fishing site? Maybe you can contrast hot-spot analysis -weekly- to define variation of fishing effort allocation at that temporal scale…
Good luck!
http://okeanos-dspace.hcmr.gr/xmlui/bitstream/handle/123456789/415/GB/6998.pdf?sequence=1
http://journals.plos.org/plosone/article/asset?id=10.1371%2Fjournal.pone.0122995.PDF
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