Assessment of the Water and Sediment Quality of Tropical Forest Streams in Upper Reaches of the Baleh River, Sarawak, Malaysia, Subjected to Logging Activities

Figure 3

Ex situ water quality of (a) chlorophyll a (chl-a), (b) total suspended solids (TSS), (c) five-day biochemical oxygen demand (BOD₅), (d) chemical oxygen demand (COD), (e) total nitrogen (TN), (f) total ammonia nitrogen (TAN), (g) nitrite nitrogen (-N), (h) nitrate nitrogen (-N), (i) total phosphorus (TP), (j) soluble reactive phosphorus (SRP), (k) total sulphide (TS), and (l) hydrogen sulphide (H₂S) collected at the six sampling stations located at the upper reaches of two main tributaries of Batang Baleh (different letters indicate significant difference at value ≤ 0.05).

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