Search for: hypersaline-environment
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    Effectiveness of herbicide to control rice weeds in diverse saline environments

    , Article Sustainability (Switzerland) ; Volume 13, Issue 4 , 2021 , Pages 1-12 ; 20711050 (ISSN) Hakim, M. A ; Juraimi, A. S ; Karim, S. M. R ; Khan, M. S. I ; Islam, M. S ; Choudhury, M. K ; Soufan, W ; Alharby, H ; Bamagoos, A ; Iqbal, M. A ; Hnilicka, F ; Kubes, J ; Rahman, M. H. U ; Saud, S ; Hassan, M. M ; Sabagh, A. E. L ; Sharif University of Technology
    MDPI AG  2021
    To mitigate environmental pollution and food contamination caused by inappropriate and excessive herbicide usage, most potent herbicides should be screened to control rice weeds. A research trial was executed for assessing the comparative efficacy of different herbicides to control rice field weeds and to evaluate the toxicity on rice under normal (distilled water) as well as different salinity levels (4 and 8 dS m-1). The study was designed to select the most potent herbicide and its appropriate dose for weed control of rice crop in coastal areas. Fourteen herbicidal treatments were included weed free crop, Pretilachlor (0.25, 0.50, 0.375 and 0.75 kg a.i. ha-1), Propanil + Thiobencarb (0.6... 

    Role of exchange flow in salt water balance of Urmia Lake

    , Article Dynamics of Atmospheres and Oceans ; Vol. 65, issue , 2014 , pp. 1-16 ; ISSN: 03770265 Marjani, A ; Jamali, M ; Sharif University of Technology
    In this paper we examine how exchange flow in Urmia Lake plays a crucial role in dynamics of the lake. Urmia Lake, a very large hyper-saline lake of high ecological significance, is located in northwest of Iran with a 15-km causeway dividing it into north and south lakes. A 1250-m opening in the causeway near the east coast links the two lakes. The differences in mean water levels and densities of the two lakes increase in spring due to large freshwater inflows into the south lake. High evaporation dominates the lake in summer. By incorporating the results of a two-layer hydraulics theory into a mixing model of the lake, we show that the exchange flow through the opening diminishes the water... 

    Lake Urmia restoration success story: A natural trend or a planned remedy?

    , Article Journal of Great Lakes Research ; Volume 47, Issue 4 , 2021 , Pages 955-969 ; 03801330 (ISSN) Nikraftar, Z ; Parizi, E ; Hosseini, S. M ; Ataie Ashtiani, B ; Sharif University of Technology
    International Association of Great Lakes Research  2021
    Lake Urmia is the second-largest hypersaline lake in the world. There has been a drastic water level drop of 7.2 m from 1995 to 2016. Beginning in October 2013, the Lake Urmia Restoration Plan (LURP) launched a 10-year program. An increase in water level and a relative improvement in Lake Urmia condition has been observed since 2017. It is an undecided and controversial issue whether the recent positive trend of Lake Urmia has been due to the LURP activities or it is a natural contribution of climate factors variations. To shed some light on this issue, we examine three other lakes, adjacent to the Lake Urmia basin, with similar rainfall variability to investigate their status during the... 

    Assessment of 2DH and pseudo-3D modelling platforms in a large saline aquatic system: Lake Urmia, Iran

    , Article Hydrological Processes ; Vol. 28, Issue. 18 , 2014 , pp. 49534970 ; ISSN: 10991085 Zeinoddini, M ; Tofighi, M. A ; Bakhtiari, A ; Sharif University of Technology
    The main objective of this paper is to provide comparative quantitative examinations on the capabilities of two-dimensional horizontal and pseudo-three-dimensional (3D) modelling approaches for simulating spatial and temporal variability of the flow and salinity in Lake Urmia, Iran. The water quality in the lake has been an environmentally important subject partly because this shallow hypersaline aquatic ecosystem is considered to be one of the largest natural habitats of a unique multicellular organism, Artemia urmiana. This brine shrimp is the major food source for many of the protected and rare shorebirds that visit the lake. A.urmiana can grow and survive in certain ranges of salinity,... 

    Interaction of lake-groundwater levels using cross-correlation analysis: A case study of Lake Urmia Basin, Iran

    , Article Science of the Total Environment ; 2020 , Volume 729 Javadzadeh, H ; Ataie Ashtiani, B ; Hosseini, S. M ; Simmons, C. T ; Sharif University of Technology
    Elsevier B.V  2020
    Lake Urmia (LU) is the second largest hypersaline lake in the world. Lake Urmia's water level has dropped drastically from 1277.85 m to 1270.08 m a.s.l (equal to 7.77 m) during the last 20 years, equivalent to a loss of 70% of the lake area. The likelihood of lake-groundwater connection on the basin-scale is uncertain and understudied because of lack of basic data and precise information required for physically-based modeling. In this study, cross-correlation analysis is applied on a various time-frames of water level of the lake and groundwater levels (2001–2018) recorded in 797 observation wells across 17 adjacent aquifers. This provides insightful information on the lake-groundwater...