Nutrient and Phytoplankton Dynamics along the Ocean Road Sewage Discharge Channel, Dar es Salaam, Tanzania

Table 1

Comparison of the nutrient levels among stations (Dunn’s multiple comparison).

Sites	Dunn’s multiple comparison test results
	Nitrite (NO2)	Nitrate (NO3)	Phosphate (PO4)
OR I versus OR II	Ns	***	Ns
OR I versus OR III	***	***	*
OR I versus MJ I	***	***	Ns
OR I versus MJ II	***	***	Ns
OR II versus OR III	***	***	Ns
OR II versus MJ I	***	***	**
OR II versus MJ II	***	***	**
OR III versus MJ I	***	***	***
OR III versus MJ II	***	***	***
MJ I versus MJ II	Ns	Ns	Ns

Ns: not significant; 𝑃>0.05; *significant; 𝑃<0.05; **very significant; ***extremely significant.