Fish Productivity Response to Water Quality Variations: A Case Study of Nyumba ya Mungu Dam, in Pangani Water Basin, Tanzania

Table 1

Pearson correlations between fish catch per unit effort and water quality parameters.

	CPUE	Turbid	TP	TN	Chl-a	Depth	Temp	DO
CPUE
Turbid	0.461
TP	0.405	0.680
TN	0.123	0.190	0.340
Chl-a	−0.167	−0.256	−0.294	−0.079
Depth	−0.253	−0.336	−0.307	0.029	−0.055
Temp	−0.239	−0.202	−0.054	−0.186	−0.093	0.144
DO	−0.287	−0.174	−0.057	−0.051	−0.123	0.182	0.110

CPUE = catch per unit effort (kg), turbid = turbidity, depth = depth of the fishing area (m), temp = temperature (°C), DO = dissolved oxygen (mgL⁻¹), TN = total nitrogen (μgL⁻¹), TP = total phosphorus (μgL⁻¹), and Chl-a = chlorophyll a (μgL⁻¹). Correlation is significant at the 0.05 level (2-tailed). Correlation is significant at the 0.01 level (2-tailed).