Tab. 1 in Seasonal variation in fish trophic networks in two clear-water streams in the Central Llanos region, Venezuela

Tab. 1. Physical and chemical characteristics measured for Charcote and Charcotico during four survey periods. DO was not measured during November and December. January was the low-water period, September was near the peak of the annual flood pulse, and during November and December floodwaters were gradually receding. ParameterSeptemberNovemberDecemberJanuaryCharcoticoCharcoteCharcoticoCharcoteCharcoticoCharcoteCharcoticoCharcoteWater temperature (°C)282727282627.52930Air temperature (°C)3026282730.5302634pH5.55.5655.55.55.55.75Water velocity (m/s)0.120.450.390.390.30.3900DO (mg/L)66––––54Max. water depth (m)1.222.271.162.151.11.650.51.25% Aquatic vegetation00050075020% Canopy cover45552320Secchi depth (m)1.222.271.1620.50.40.20.35