Diversity and abundance of the sawfly (Hymenoptera: Symphyta) community in Darab rain-fed damask rose plain, Fars province, southwestern Iran

The objectives of this study were to assess the biological water of the Iranian Tajan River using different metrics, i.e., a Multimetric Macroinvertebrate Index (MMI) and a traits-based method. Twenty-eight physico-chemical parameters, 10 habitat factors, and abundance of macroinvertebrates were obtained for 17 sites. The Shahid-Rajaie dam divides the Tajan River into an up- and downstream part...

Abstract The present study proposes a multipurpose reservoir operation optimization for mitigating impact of rice fields’ contamination on the downstream river ecosystem. developed model was applied in Tajan River basin Mazandaran Province, Iran, which is main crop. We used soil and water assessment tool (SWAT) to simulate inflow nitrate load at reach. Nash–Sutcliffe efficiency coefficient meas...

Calibration and Evaluation of HEC-HMS Hydrological Model Parameters in Simulation Single Rainfall-Runoff Events (Case Study: Tajan Watershed)

The present study proposes a support vector machine (SVM)-based habitat model linked with evolutionary optimisation to balance the impacts of generating hydropower on downstream river habitats. This method was applied in Rajaei reservoir and Tajan River basin Iran mitigate environmental plants. SVM classified suitability at which sigmoid function considering different slopes applied. Nash–Sutcl...

BACKGROUND Nowadays, aquatic organisms are used as bio-indicators to assess ecological water quality in western regions, but have hardly been used in an Iranian context. We, therefore, evaluated the suitability of several indices to assess the water quality for an Iranian case study. METHODS Measured data on biotic (fish and macroinvertebrates) and abiotic elements (28 physicochemical and hab...