Tab. 1 in Morphological variation among populations of Hemigrammus coeruleus (Characiformes: Characidae) in a Negro River tributary, Brazilian Amazon

Tab. 1. Overview of geomorphological and environmental features recorded in Unini River tributaries during time of specimen collections. Measurements including more than one value are expressed as the average and range. Feature/TributaryUN2UN3UN4UN5Temperature [°C]29.5 (29.2 - 29.8)26.5 (24.8 - 28.6)26.0 (25.5 - 26.8)26.7 (25.1 - 29.6)pH6.00 (5.75 - 6.26)5.42 (4.46 - 6.30)6.21 (5.41 - 6.52)5.87 (5.47 - 6.73)Conductivity [µS/cm]28.5 (22.0 - 35.0)17.5 (16.0 - 18.6)18.0 (10.0 - 39.0)12.0 (9.2 - 18.0)Dissolved oxygen [mg/L]1.05 (1.03 - 1.08)3.29 (1.51 - 6.68)3.68 (0.77 - 5.98)2.21 (1.50 - 3.20)Water colorBlackBlackMuddyBlackWatershed area [ha]370,000150,00050,000570,000Main stem length [km]223.9132.257.6291Sinuosity2.1021.7081.81.996Main stem width [m]55332080Floodplain width [m]2,5608735721,999Number of lakes324915478Lakes/river lenght1.4470.6880.0871.643