Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Bayesian longitudinal models for exploring European sardine fishing in
  the Mediterranean Sea   In the Mediterranean Sea, catches are dominated by small pelagic fish,
representing nearly the 49\% of the total harvest. Among them, the European
sardine (Sardina pilchardus) is one of the most commercially important species
showing high over-exploitation rates in recent last years. In this study we
analysed the European sardine landings in the Mediterranean Sea from 1970 to
2014. We made use of Bayesian longitudinal linear mixed models in order to
assess differences in the temporal evolution of fishing between and within
countries. Furthermore, we modelled the subsequent joint evolution of artisanal
and industrial fisheries. Overall results confirmed that Mediterranean fishery
time series were highly diverse along their dynamics and this heterogeneity was
persistent throughout the time. In addition, results highlighted a positive
relationship between the two types of fishing.

2
The categories of this paper are: math
27
The categories of this paper are: comp-gas
8
The categories of this paper are: hep-ex
37
The categories of this paper are: supr-con
1
The categories of this paper are: cs
6
The categories of this paper are: astro-ph
29
The categories of this paper are: funct-an
26
The categories of this paper are: bayes-an
30
The categories of this paper are: q-alg
18
The categories of this paper are: econ
21
The categories of this paper are: adap-org
34
The categories of this paper are: chem-ph
9
The categories of this paper are: nlin
36
The categories of this paper are: cmp-lg
13
The categories of this paper are: quant-ph
28
The categories of this paper are: alg-geom