impacts of effluent from fish farming activities on fluvial ecosystems lead to deterioration of water quality and changes in the macroinvertebrates assemblage. in this study, the influence of fish farm effluents on water quality and macroinvertebrates communities of tajan river was investigated to evaluate the suitability of macroinvertebrates based on biological metrics and indices. benthic ma...

purpose: the gole of this study is to survey attitudes of council members' of rural relative to the preference quality of life in rural areas of villages of dehgolan in kurditan province. it reveals the priority of indices in terms of the quality of life improvement in this region. methodology: this study was descriptive - analytical. data was collected through a questionnaire survey. the study...

assessment of soil quality is one of the most useful tools for evaluation the soil management condition and different land uses. quantity indices of soil quality are most suitable methods for determination and comparison of soils quality. in this study soil quality indices and selection methods of effective soil properties were compared for evaluating the soil quality in different land uses. se...