Exploring Relationships between Demersal Resources and Environmental Factors in the Ionian Sea (Central Mediterranean)

Table 3

Estimated regression coefficients and relative standard errors in the models selected on the basis of AIC_c, Δ_i for AIC_c and Akaike weights (𝑤_𝑖) values. Predictive variables are: 1: fishing effort, 2: NAO index, 3: SST and 4: precipitation.

Dependent variable	Predictive variable	β	Standard error
Density index (ln) A. foliacea	(constant)	13.552	2.293
	1	−0.035	0.010
	2	0.214	0.154
Density index N. norvegicus	(constant)	2127.840	660.323
	1	−2.693	1.091
	3	−58.976	30.678
	4	0.355	0.495
Density index (ln) P. longirostris	(constant)	16.037	5.567
	1	−0.015	0.009
	2	0.183	0.126
	3	−0.253	0.258
	4	0.002	0.004
Density index	(constant)	548.557	93.731
M. merluccius	2	122.402	43.096
Density index	(constant)	369.053	369.330
P. blennoides	1	−0.489	1.572
Density index (ln)	(constant)	10.631	1.662
M. barbatus	1	−0.012	0.007
Recruitment index (ln)	(constant)	16.073	2.745
P. longirostris	1	−0.046	0.012
Recruitment index N. norvegicus	(constant)	1434.513	416.091
	1	−1.497	0.687
	3	−45.165	19.331
	4	0.036	0.312
Recruitment index	(constant)	232.864	54.057
M. merluccius	2	68.711	24.855
Recruitment index (ln)	(constant)	6.916	0.352
M. barbatus	2	−0.058	0.148