Invest Fisheries model
I'm trying to apply the "InVEst fisheries" model for the Mediterranean hake fishery, whose objective is to test different management scenarios, in particular the closure of an area for fishing. I have some doubts about the correct design of the data required for the model (inputs) and I hope to find answers to my questions in order to carry out the right execution of the program.
1) First, I try to test the model without integrating aspects of migration and habitat dependencies. I will assume fixed recruitment (see no relationship between stock and recruits based on the historical series) and conducted a cohort analysis (via VIT) to identify the initial recruitment number, will this number be appropriate ?
2) For the exploitation fraction, I considered the fishing effort applied at the level of each fishing zone to specify it. My sub-regions are 28 different fishing zones where the activity takes place. The zone subject to the greatest fishing effort is that to which I have assigned a value of exploitation fraction 1 and on its basis I have concluded the exploitation fraction of the other regions.
3) Finally, my big doubt is about the dispersal of larvae in the model. I tried to establish it on the basis of the density of the individuals of age 0. Having some data on the abundance of the population, I performed an interpolation (using Qgis) to have an average density of each age (0 to 5+) in each sub-region. For the density result of age 0, considering the dispersion in each subregion as fraccion (density subregion x / total density of age 0 in the 28 subregions) will it be a good method for estimating the dispersion of larvae requiered ?
Thank you so much and sorry to have been a bit long.
Post edited by Mery_kh on