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... underparts and belly are also greyish-brown, but paler. Distribution The Philippine Duck is endemic to the Philippines. It has been recorded mostly in Luzon (呂宋) and Mindanao (棉蘭 老島) (BirdLife International, 2000). The species inhabits a variety of wetlands, including mountain lakes, small pools, rivers...

... underparts and belly are also greyish-brown, but paler. Distribution The Philippine Duck is endemic to the Philippines. It has been recorded mostly in Luzon (呂宋) and Mindanao (棉蘭 老島) (BirdLife International, 2000). The species inhabits a variety of wetlands, including mountain lakes, small pools, rivers...

... underparts and belly are also greyish-brown, but paler. Distribution The Philippine Duck is endemic to the Philippines. It has been recorded mostly in Luzon (呂宋) and Mindanao (棉蘭 老島) (BirdLife International, 2000). The species inhabits a variety of wetlands, including mountain lakes, small pools, rivers...

....00 32.20 Dissolved Oxygen (mg/L) 7.10 6.90 7.00 6.80 7.10 6.45 6.40 7.30 pH 8.40 8.40 8.30 8.30 8.30 8.30 8.20 8.40 Secchi Disc Depth (m) Turbidity (NTU) <1 <1 <1 <1 <1 <1 <1 <1 Suspended Solids (mg/L) 3.50 6.00 3.50 4.50 6.00 6.50 7.50 7.50 5-Day Biochemical Oxygen Demand (mg/L) <2 <2 <2 <2 <2 <2 <2...

... Oxygen (mg/L) 6.80 6.80 6.90 6.90 6.80 6.80 pH 7.88 7.84 7.91 7.88 7.89 7.90 Secchi Disc Depth (m) Turbidity (NTU) 5.50 17.50 6.00 14.00 6.00 17.00 Suspended Solids (mg/L) 7.50 27.50 10.00 30.50 9.50 37.50 5-Day Biochemical Oxygen Demand (mg/L) <2 <2 <2 <2 <2 <2 Ammoniacal Nitrogen (mg/L) 0.07 0.07 0.07...

... Oxygen (mg/L) 6.60 6.40 6.70 6.70 6.60 6.50 pH 8.20 8.20 8.20 8.20 8.20 8.20 Secchi Disc Depth (m) Turbidity (NTU) 11.50 11.00 22.50 25.00 7.00 6.50 Suspended Solids (mg/L) 15.50 14.00 39.50 40.00 8.00 6.50 5-Day Biochemical Oxygen Demand (mg/L) <2 <2 <2 <2 <2 <2 Ammoniacal Nitrogen (mg/L) 0.06 0.06 0.02...

....10 8.13 8.08 8.08 8.08 8.10 Secchi Disc Depth (m) Turbidity (NTU) 7.13 12.25 8.38 15.00 7.50 8.50 7.00 8.50 Suspended Solids (mg/L) 14.63 15.63 16.50 17.50 12.50 12.13 9.13 11.38 5-Day Biochemical Oxygen Demand (mg/L) 2.25 <2 3.00 2.00 2.75 <2 <2 2.38 Ammoniacal Nitrogen (mg/L) 0.04 0.03 0.02 0.02 0...

... 8.28 8.50 8.17 8.01 7.95 pH 8.24 8.24 8.27 8.26 8.25 8.25 Secchi Disc Depth (m) Turbidity (NTU) <1 <1 1.00 1.00 2.00 2.00 Suspended Solids (mg/L) <2 <2 3.00 <2 <2 <2 5-Day Biochemical Oxygen Demand (mg/L) 2.50 3.00 2.50 2.50 2.00 2.50 Ammoniacal Nitrogen (mg/L) <0.01 <0.01 <0.01 <0.01 0.01 0.02...

... Water Quality Data of Hoi Ha Wan Marine Park from October to December 2017 (4th Quarter) Water Depth Surface Bottom Surface Bottom Surface Bottom Surface Bottom Air Temperature (°C) Temperature (°C) 25.70 26.30 25.70 26.30 25.60 26.00 25.40 25.90 Salinity (‰) 30.60 32.00 29.80 32.10 30.50 31.20 30...

... Nitrite Nitrogen (mg/L) 0.03 0.05 0.02 0.02 0.01 0.03 Nitrate Nitrogen (mg/L) 0.38 0.56 0.28 0.44 0.33 0.30 Total Inorganic Nitrogen (mg/L) 0.50 0.74 0.41 0.58 0.45 0.47 Total Kjeldahl Nitrogen (mg/L) 1.00 0.50 0.77 0.83 1.33 1.50 Total Nitrogen (mg/L) 1.46 1.12 0.88 1.09 1.55 1.74 Orthophosphate...