Journal Article•
Evaluation of water quality and organic pollution of Shadegan and Hawr Al Azim wetlands by biological indices using insects
01 Oct 2014-Journal of entomology and zoology studies (AkiNik Publications)-Vol. 2, Iss: 5, pp 193-200
TL;DR: In this article, the water quality and organic pollution of Shadegan and Hawr Al Azim wetlands by biological indices using insects during October 2011 to September 2012 were evaluated and the results of the biological monitoring working party index indicated that the abundance of family with medium or lower scores was high.
Abstract: In this study the water quality and organic pollution of Shadegan and Hawr Al Azim wetlands by biological indices using insects during October 2011 to September 2012 were evaluated. The results of the biological monitoring working party index indicated that the abundance of family with medium or lower scores was high. The evaluation results of water quality and organic pollution of these wetlands by Ephemeroptera, Plecoptera and Trichoptera, average score per taxon and family biotic indexes indicated that the water quality had a fair to very poor condition assessing probable severe pollution, and likely substantial to severe organic pollution. Also the dominant family index indicated the community was under the influence of environmental stress in these wetlands. Totally assessing outcomes of these biological indices from these wetlands showed that their water quality had a poor condition and they can be used as valuable tools for evaluating the wetland water quality.
Citations
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TL;DR: The study results confirm that an apparent increasing CCHF cases occurred through the past decades and the trends of annually and periodically C CHF cases and fatality rates were also increased.
Abstract: Crimean-Congo hemorrhagic fever (CCHF) is the most popular tick-borne disease causing by Crimean-Congo hemorrhagic fever virus (CCHFV). There are several valuable reviews considering some fields of the CCHF aspects. While there is no a systematic review about means and trends of CCHF cases and fatality rate, means and trends of CCHF cases and fatality rates of human occupations involved in CCHF. Therefore, this meta-analysis review performed to highlight and provide a global detailed of the above CCHF aspects. Among 398 collected papers, 173 papers were become this meta-analysis review. The study results confirm that an apparent increasing CCHF cases occurred through the past decades. The trends of annually and periodically CCHF cases and fatality rates were also increased. The means of annually and periodically CCHF cases and fatality rates were 57 and 432 cases, and 10 cases and 32.2 % and 49 cases and 28.8 %, respectively. The means of annually and periodically CCHF fatality rates are about one-tenth of CCHF human cases. The mean of CCHF fatality rates in Africa (22.0 %) is lower than Asia (33.5 %) and Europe (33.8 %). Among occupations involved in CCHF, agricultural (28.9 %), health-care (19.2 %) and slaughterhouse (16.7 %) workers, and farmers (13.9 %) had the maximum CCHF fatality rates in order. Based on literature review of CCHFV S-segment aspects, several clades and genotypes are reported to distribute in Africa, Asia and Europe regions. There are very wide fields to investigate the epidemiology characteristics of CCHFV clades, genotypes and their distribution in the future.
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TL;DR: A meta-analysis of 396 papers representing areas throughout the world to highlight seroprevalence features of CCHF in a global context found that animal contact, animal husbandry, farming, tick bite history and secretion exposure were the most frequently reported C CHF seropositivity risk factors.
40 citations
TL;DR: Bed sediment from the Shadegan and Hawr Al Azim wetlands provides baseline data which can be used to support development of appropriate contaminant source management strategies to help ensure conservation of these valuable wetland resources.
Abstract: The Shadegan and Hawr Al Azim wetlands are important natural resources in southwestern Iran, yet relatively little work has been done to assess ecosystem health of the wetlands. Bed sediment from both wetlands was sampled in individual months between October, 2011 and December, 2012 and analyzed for As, Cd, Co, Cr, Cu, Fe, Hg, Mn, Pb, and Zn using inductively coupled plasma optical emission spectrometry (ICP-OES). The metals data were evaluated using a combination of sediment quality guidelines from the Ontario Ministry of Energy and Environment (MOEE, Canada), enrichment factors (EFs), and a geo-accumulation index (Igeo) approach. The sediments exceeded MOEE Lowest Effect Levels (LELs) consistently for Cr and Cu and a small proportion of samples (5%) for Hg. Levels of As, Cd, Fe, Pb, and Zn did not exceed LELs and none of the samples exceeded the Severe Effect Levels (SELs). In addition to the sediment guidelines, both the EF and Igeo calculations suggested levels of Mn and Fe were severely enriched, while the EF indicated Cd was slightly enriched. Metal levels in the Shadegan wetland exhibited both spatial and seasonal trends. Metal levels were greater near input areas from agricultural, urban, and industrial discharges and runoff as compared to the more remote and quiescent central part of the wetland. Except for Fe, the metal levels were greater in the wet season as compared to the dry season, perhaps due to greater stormwater runoff and sediment loads. This study provides baseline data which can be used to support development of appropriate contaminant source management strategies to help ensure conservation of these valuable wetland resources.
36 citations
Cites background from "Evaluation of water quality and org..."
...This area is relatively unaffected by human activity (Nasirian, 2014; Fig....
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...They found that in wet years, the wetland is fully inundated and water drains to the tidal area in the south, while in dry years, the wetland is only partly inundated and it becomes a terminal basin (Nasirian, 2013; 2014)....
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TL;DR: It was found that Cr, Cu, Mn, and Zn were being taken up by the Odonata (BSAFs >1), and it was suggested that Ischnura ramburii is an appropriate indicator of ecosystem health for these wetlands with respect to metal contamination.
Abstract: The objectives of this study were twofold: (i) assess the bioaccumulation characteristics of a suite of metals associated with several different species of Odonata and (ii) examine Odonata species richness as a reflection of ecosystem health in two ecologically important wetlands of southwestern Iran, the Shadegan and Hawr Al Azim wetlands. Levels of arsenic (As), cadmium (Cd), cobalt (Co), chromium (Cr), copper (Cu), iron (Fe), mercury (Hg), manganese (Mn), lead (Pb), and zinc (Zn) were determined using inductively coupled plasma optical emission spectrometry (ICP-OES) in nine different Odonata larva species. Based on these data, biota-sediment accumulation factors (BSAFs) were calculated and generally, it was found that Cr, Cu, Mn, and Zn were being taken up by the Odonata (BSAFs >1). Because of its prevalence in the wetland and its observed ability to take up metals, it is suggested that Ischnura ramburii is an appropriate indicator of ecosystem health for these wetlands with respect to metal contamination. Odonata species richness across all sites was 49, while for the individual sites, the greatest species richness was 26 and the lowest species richness was 13. The species richness value across all sites is quite healthy, given the arid climate of the region.
24 citations
Cites background from "Evaluation of water quality and org..."
...This area is relatively unaffected by human activity (Nasirian 2014)....
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...During the dry years, inflow to the wetland occurs exclusively from the Jarrahi River (formed by the confluence of the Marun and Ab-i Alla Rivers; see also Nasirian 2013, 2014)....
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TL;DR: An initial checklist of mayflies (Ephemeroptera) of Iran is compiled based on critical review of available literature data, complemented with new data from 38 localities of Gilan and Ardabil provinces.
Abstract: An initial checklist of mayflies (Ephemeroptera) of Iran is compiled based on critical review of available literature data, complemented with new data from 38 localities of Gilan and Ardabil provinces. At present, altogether only 46 species and 25 genera are known from Iran, 18 species are reported as new to Iran in this study. Some previously published data are critically evaluated and doubtful taxa are excluded from the list. Basic analysis of the distribution and biogeography of recorded species is given. Procloeon (Pseudocentroptilum) caspicum Sroka, sp. n. is described based on mature larva and egg. Critical differential diagnostic characters distinguishing the species from related taxa are discussed in detail.
23 citations
Cites background from "Evaluation of water quality and org..."
...…family level (e.g., Nemati Varnosfaderany et al. 2010, Montajami et al. 2012, Abbaspour et al. 2013, Bashti and Ostovan 2014, Eyidozehi et al. 2014, Nasirian 2014, Aazami et al. 2015, Shayeghi et al. 2016) or generic level only (e.g., Egglishaw 1980, Mousavi Nadushan and Ramezani 2011, Mahboobi…...
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References
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Abstract: The services of ecological systems and the natural capital stocks that produce them are critical to the functioning of the Earth's life-support system. They contribute to human welfare, both directly and indirectly, and therefore represent part of the total economic value of the planet. We have estimated the current economic value of 17 ecosystem services for 16 biomes, based on published studies and a few original calculations. For the entire biosphere, the value (most of which is outside the market) is estimated to be in the range of US$16-54 trillion (10^(12)) per year, with an average of US$33 trillion per year. Because of the nature of the uncertainties, this must be considered a minimum estimate. Global gross national product total is around US$18 trillion per year.
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...Consequently, their community structure has commonly been used as a bioindicator of the condition of an aquatic system [6]....
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TL;DR: In this paper, the performance of the BMWP system across 268 sites on 41 rivers providing a wide range of physical and chemical features has been appraised and changes in score and ASPT with respect to season and sampling effort have been examined.
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TL;DR: Tolerance values for families of arthropods are presented to enable calculation of a family-level biotic index (FBI) in the field in six streams differing in substrates and degree of organic pollu as discussed by the authors.
Abstract: Tolerance values for families of arthropods are presented to enable calculation of a family-level biotic index (FBI) in the field In six streams differing in substrates and degree of organic pollu
804 citations
"Evaluation of water quality and org..." refers methods in this paper
...10 Evaluation of the water quality and organic pollution degree The water quality and organic pollution were assessed by family-level biotic index (FBI) according to Hilsenhoff (1988) table [1, 20]....
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...2.10 Evaluation of the water quality and organic pollution degree The water quality and organic pollution were assessed by family-level biotic index (FBI) according to Hilsenhoff (1988) table [1, 20]....
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