Drivers of the Distribution of Fisher Effort at Lake Alaotra, Madagascar

Table 1 Results of the negative binomial generalised linear model of fisher profile variables explaining fisher effort measured as time spent fishing

Explanatory variables	Estimate	SE	z	P
Intercept	5.9886	0.2931	20.397	<0.0001
Age category^a
Age25-34	−0.1793	0.1055	1.697	0.0897
Age35-44	0.0071	0.1074	0.066	0.9471
Age45-54	−0.1756	0.1186	1.478	0.1393
Age55+	0.0203	0.1261	0.161	0.8724
Total dependents	0.0406	0.0136	2.975	0.0029
Education^b
Secondary	0.0832	0.0449	1.852	0.0640
Alternative livelihood^c
Yes	0.0342	0.0591	0.578	0.5634
Gear type^d
Gill nets	0.7292	0.0481	15.148	<0.0001
Cast nets	1.1004	0.1332	8.250	<0.0001
Line & hook	1.4453	0.2766	5.218	<0.0001
Hand methods	0.3528	0.1581	2.228	0.0259

Baseline levels are ^a‘Age15-24’, ^b‘primary school education,’ ^c‘no alternative livelihood,’ and ^d‘traps.’ Significant values are in bold