Influence of Seasonal Monsoon on Trophic State Index (TSI), Empirical Water Quality Model, and Fish Trophic Structures in Dam and Agricultural Reservoirs

Seasonal variation of limnological features and trophic state index of two oligotrophic reservoirs of southeast Brazil.

Limnological features of two reservoirs were studied in dry (August 2013) and rainy (January 2014) periods to evaluate the water quality that supply the city of Guarulhos, southeast Brazil. Water samples were collected in three depths and the following characteristics were measured: alkalinity, dissolved O2, free and total CO2, HCO3, soluble reactive silica, dissolved and total nitrogen and pho...

Research Article: Trophic status index and natural fisheries potential of some Iranian reservoirs

The Iran Water Resources Management Company constructs many dams to control surface water that provide a new potential for aquaculture activities. Trophic status index and natural potential for fish production were investigated in nine small dam reservoirs from northwest of Iran. Prediction of fish productivity was calculated based on phytoplankton biomass (using chlorophyll a concentration in ...

Assessment of Carson Trophic Index in Dam Lake: a Case Study of Ekbatan Dam

Background and purpose: The study aimed to investigate the trophic state of Ekbatan Dam Lake. In the current research, the quality of water behind the dam was studied during the months July and January in order to compare the trophic state and zonation of the reservoir in two different seasons (dry and wet). Materials and Methods: 15 sites were selected in different points of Ekbatan Dam Lak...

Evaluation and classification of trophic status in coastal waters of Homozgan province using trophic index Scale (Trixcs) and unscale (Untrixcs)

One of the most important issues in environmental management of coastal waters is the evaluation of Eutrophication. In this study, the trophic status of coastal waters of Hormozgan province was evaluated using Scale (TRIXCS) and Unscale (UNTRIXCS) trophic indices in 2012. The results showed that TRIXCS values were in the range of 3.6 to 5.9 (in the area 1 Mezo-Eutroph, areas 2 and 3 Mezotroph, ...

Zooplankton Abundance, Biomass and Trophic State in Some Venezuelan Reservoirs