the present study was conducted to provide a detailed descriptive osteology of barbus cyri from southern caspian sea for the first time and comparing it with those of b. lacerta from the tigris and urmia lake basins. for this purpose, twelve specimens of b. cyri were collected from safidrud river using electrofishing device and fixed in 10% buffered formalin. then, the specimens were cleared an...

Limited water resources with uneven distribution in addition to the growing demands are the main challenges of the water governance in Iran. The Government has planned several water resources development project and due to their complex technical, socio-economical, and environmental outcomes, comprehensive evaluation is needed. To select more adaptive and accountable projects, suitable group de...

Critical transition zones, such as aquatic–terrestrial interfaces, have been recognized as important features in landscape ecology. Yet changes in the community structure of soil and sediment biota across aquatic–terrestrial boundaries remain relatively unstudied. We investigated the community structure of the dominant fauna, namely nematodes, rotifers and tardigrades, across lake sediment–soil...

flood is one of the major natural disasters in iran, which is mostly, affected most parts of the country and caused hazards. therefore, identification of the area with high potential risk of flood occurrence is the main purpose in order to the flood control and reducing its damages. in this research the role of the flood routing in identification of the area with high potential flooding has inv...

Pre-sedimentation basins are among the most important elements of the conventional water treatment process. In pre-sedimentation basins, due to different velocity gradients, secondary and rotational flows are formed that will create short paths and increase dead and still flow zones as well as changes in the flow mixing. This will prevent laminar flow conditions for sedimentation and will reduc...

fish biodiversity investigation in urmia basin which is a part of irano-anatolian hot spot aimed to determine the state of fish in this endorheic basin. based on the obtained results, freshwater fish species of the urmia basin comprise 29 species in 25 genera, 7 families, 5 orders and one class. the most diverse order is the cypriniformes with 23 species (79.31%) followed by salmoniformes and p...

Abstract Growing agricultural and domestic demand exacerbates water shortages globally, creating substantial environmental challenges, especially in lakes wetlands ecosystems. This paper presents a stationary policy to restore sustain the level natural using new version of hedging rule that accounts for time-dependent allocation municipal sectors under different climate change projections. The ...

[1] The geologic history of Crater Terby is developed through geomorphic and stratigraphic analyses within the regional context of the Hellas basin. Terby exhibits 2-km-thick sequences of layers that consist of repetitive, subhorizontal and laterally continuous beds. The layers are predominantly fine-grained as indicated by their ease of aeolian erosion, although a few consolidated layers weath...

Abstract This study investigates the future changes in precipitation extreme indices Lake Urmia Basin during period 2021–2100 compared to base (1987–2016), based on Coupled Model Intercomparison Project Phase 5 models. Trend analysis was performed using Mann–Kendall test and Sen's estimator. The output of these models downscaled by Long Ashton Research Station Weather Generator method for repre...