All of the three pools had low concentrations of dissolved
nutrients (DOC 1.5 0.83 mg L
1; DON
0.06 0.04 mg L
1; TDN 0.15 0.11 mg L
1) and low
conductivity (75.2 13.3 micromhos cm
1) with moderate
hardness and a range of pH 6.2 to 8.0 (Table 1). The
nitrogen and phosphorus concentrations were also low
and typical of other Luquillo streams (McDowell et al.,
2012).