-
31دورية أكاديمية
المصدر: Majallah-i ̒Ilmī-i Shīlāt-i Īrān, Vol 25, Iss 1, Pp 105-118 (2016)
مصطلحات موضوعية: Phytoplankton, diversity, Abundance, Anzali Wetland, Agriculture, Aquaculture. Fisheries. Angling, SH1-691
الوصف: Phytoplankton groups are very important producers in the Anzali wetland having a significant role in the quality and need to be constantly studied in term of their sequence and density. This survey was conducted at 6 stations between March 2011 and February 2012. According to the results, 67 different genera (22 Bacillariophyta, 26 Chlorophyta, 9 Cyanobacteria, 5 Cryptophyta, 1 Euglenophyta, 2 Chrysophyta, 1Dinoflgellata and 1 Xanthophyta) were identified. Most observed in Sorkhankol and Karkan stations with the annual average of 24.4±5.6 and 20.4± 5.4 cells/ liter respectively. The Bacillariophyta particularly Cyclotella was dominant in all of the stations, but high abundance of Cyanobacteria in Karkan station from July to mid-Octobercaused the annual average of this phylum to be more than Bacillariophyta. The highest and lowest phytoplankton abundances were observed in September and December, respectively.The number of phytoplankton genera and diversity in this study were less than previous studies.
وصف الملف: electronic resource
-
32دورية أكاديمية
المؤلفون: A.A Khanipour, M Seifzadeh, Mina Ahmadi
المصدر: Bihdāsht-i Mavādd-i Ghaz̠āyī, Vol 5, Iss 4 (20) زمستان, Pp 37-43 (2016)
مصطلحات موضوعية: Edible tissue, Anzali wetland, cobalt, Nickel, Rutilus frisii kutum, Food processing and manufacture, TP368-456
الوصف: The aim of this study was to determine the accumulation of nickel and cobalt in the edible tissues of Crucian (Rtilus frisii kutum) and to compare their concentrations with the FDA/FAO standards. For this purpose, the fish samples were caught from western, central and eastern stations of Anzali wetland. Using a flame atomic absorption spectrophotometer, Ni and Co contamination were determined. According to the results, the mean value of Ni concentration in the samples caught from the eastern and central stations were 0.93 and 0.80 µg/g, respectively which were not statistically different. Moreover, Ni concentration in the central region was estimated at 1.13 μg/g, which was not significantly different from the FDA standard. In the case of Co, the average concentration in the western parts was below the detection limit; however in the central and eastern parts Co level was 0.13 and 0.07 μg/g dry weight, respectively that was in the approved limit adopted by FDA and FAO. Besides, the difference of Co concentration in the eastern, western as well as central stations was not significantly different. Based on the results, Ni and Co contents in edible tissues of Crucian of the eastern, western and central stations of Anzali wetland were found suitable for human consumption.
وصف الملف: electronic resource
-
33دورية أكاديمية
المؤلفون: M. Zamani, N. Khorasani, A. R. Riyahi Bakhtiyari, K. Rezaee
المصدر: Iranian Journal of Applied Ecology, Vol 4, Iss 12, Pp 41-53 (2015)
مصطلحات موضوعية: Origin determination, PAH, Surface sediments, Birds eggs, Anzali wetland., Environmental sciences, GE1-350, Ecology, QH540-549.5
الوصف: In the present study, 10 egg samples of two bird species and 16 surface sediment samples were collected in order to determine the concentrations and origins of 23 PAH compounds. Then, PAH compounds were extracted using the clean-up method, following which the compounds were analyzed with the GC-MS. The total concentrations of the 22 PAH compounds (except for perylene) were determined within the ranges of 560.05 to 833.66 and 185 to 284.15 ng g-1 dry weight in the sediment samples and the bird egg samples, respectively. The results of the statistical tests indicated that there is no significant relationship between the total concentration of the 22 PAH compounds in the sediment samples collected from the two regions studied. Nevertheless, the concentration of these compounds in the samples of the Ardea cinerea eggs was obtained more than that of Chlidonia shybrida. The results from the tests aiming at the determination of the origin of PAH compounds and of perylene demonstrated a biogenic origin for perylene and a petrogenic origin for the PAH compounds. Since the concentrations of the PAH compounds analyzed in all the sediment and egg samples indicated the same distribution and origin, it can be concluded that these compounds were accumulated in the birds' eggs from the breeding areas and that the eggs of the two species studied can be considered as suitable biomonitors for PAH compounds.
وصف الملف: electronic resource
-
34دورية أكاديمية
المؤلفون: Nazarhaghighi, F., Mousavi Nadoushan, R., Shabanipour, N., Fatemi, M.R., Mashinchian Moradi, A.
المصدر: Caspian Journal of Environmental Sciences, Vol 13, Iss 4, Pp 407-416 (2015)
مصطلحات موضوعية: new record, Limnodrilus claparedeianus, Anzali Wetland, Environmental sciences, GE1-350, Science
الوصف: Oligochaeta worms are important organisms in aquatic ecosystem. Their omnipresence makes them as an indicator of environmental changes and health of aquatic ecosystem. The members of the family Tubificidae and in particular, genus Limnodrilus are considered as the most tolerant oligochaets to aquatic pollution. Therefore identification and biological characteristics of this taxon are of great help to evaluate the ecosystem of water bodies. Limnodrilus claparedeianus were collected from Anzali Wetland with a grab of 0.04 m2 capacity at 13 stations from August 2012 through June 2013. Penis sheath was one of the main characteristics to identify them. Results showed their maximum and the minimum density in spring (601.27 ± 466.8346 Ind.m-2 ) and in autumn (156.12 ± 136.3 Ind.m-2 ) respectively which was significantly different (P
وصف الملف: electronic resource
-
35
المؤلفون: Sara Esmaeilzadeh, Hamide Aliani, Somayeh Haghighat, Marjan Esmaeilzadeh, Najmeh Yazdanfar, Elham Mahmoudpuor
المصدر: Water Science and Technology, Vol 84, Iss 9, Pp 2578-2590 (2021)
مصطلحات موضوعية: Pollution, Geologic Sediments, Environmental Engineering, sediment quality guidelines, media_common.quotation_subject, Wetland, Iran, international anzali wetland, Environmental technology. Sanitary engineering, pollution level indices, Metals, Heavy, Surficial sediments, Ecological risk, TD1-1066, Water Science and Technology, media_common, Hydrology, geography, geography.geographical_feature_category, risk assessment, food and beverages, Sediment, Heavy metals, Contamination, Trace Elements, Wetlands, Environmental science, Enrichment factor, Water Pollutants, Chemical, Environmental Monitoring
الوصف: In this paper, concentrations of some heavy metals in surficial sediments of the International Anzali Wetland were measured, this wetland is located in the northern part of Iran. Sediment pollution levels were examined and analyzed using reliable pollution indices including Pollution Load Index (PLI), Geoaccumulation Index (Igeo) and Enrichment Factor (CF), and finally it was revealed that heavy metal pollution ranged from low to moderate loads in the wetland. According to Sediment Quality Guidelines (SQGs) and Ecological Risk Index (ERI), it was concluded that As and Ni may have significant toxic impacts on aquatic organisms and also according to Effect Range Median (ERM), the toxicity probability of sediments in the Anzali wetland was estimated at 21%. HIGHLIGHTS Metal pollutions in aquatic ecosystems have raised worries worldwide.; Anzali Wetland is one of the most important aquatic ecosystems in Iran and is threatened by different kinds of contaminants such as metals.; Sediment pollution analysis is one of the proper approaches to investigate metal in the aquatic environments.; Ecological risk assessment with this method has been done for the first time in Anzali.
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6625a6bfed0217250fa9338d325b36b5Test
https://doi.org/10.2166/wst.2021.455Test -
36دورية أكاديمية
المصدر: Majallah-i ̒Ilmī-i Shīlāt-i Īrān, Vol 27, Iss 3, Pp 23-30 (2018)
مصطلحات موضوعية: Organochlorine pesticide, Organophosphorus pesticide, Commercially important fish, Anzali Wetland, Edible muscle tissue, Agriculture, Aquaculture. Fisheries. Angling, SH1-691
الوصف: The objectives of the present investigation were to study the bioaccumulation of Aldrin, Diazinon and Endrin pesticides in the edible muscle tissues of Tinca tinca, Rutilus frisii kutum, Carassius auratus, Cyprinuscarpio, Silurus glanis and Esox lucius that were caught at various stations in the west, east and centre of the Anzali Wetland and to compare the results with the standards of the World Health Organization (WHO). The concentration of organochlorine pesticide was determined using Gas Chromatography (GC) equipped with an electron capture detector. The concentration of organophosphorus pesticide was determined using Gas Chromatography/Mass Spectrometry (GC/MS). The highest concentration of Diazinon was detected in Esox lucius from the wetland east station (20.25 ppb). Significant differences were not observed in the amounts of Diazinon and Aldrin pesticides in the muscles of fish samples in various stations (P>0/05). The highest amounts of Endrin were observed in the muscle of Cyprinuscarpio from the wetland east and west stations whichwere significantly different compared to that of other fish species (P<0/05). The amount of Aldrin in the Carassius auratus was significantly different compared to that of other fish species (P<0/05). According to the results, the amounts of Aldrin, Diazinon and Endrin were lower than the detection limits of the WHO standards. Therefore, consumers are not at risk from the point of view of food safety.
-
37
المؤلفون: Rahmat Zarkami, Roghayeh Sadeghi, Mahsa Hassanzadeh
المصدر: Applied Water Science, Vol 11, Iss 6, Pp 1-8 (2021)
APPLIED WATER SCIENCEمصطلحات موضوعية: Pollutant, geography, geography.geographical_feature_category, 010504 meteorology & atmospheric sciences, biology, Water supply for domestic and industrial purposes, Chemistry, Fauna, Heavy metals, Wetland, 010501 environmental sciences, biology.organism_classification, 01 natural sciences, Anzali wetland, Azolla filiculoides, Bioremediation, Inductively coupled plasma atomic emission spectroscopy, Environmental chemistry, Earth and Environmental Sciences, Ecosystem, TD201-500, 0105 earth and related environmental sciences, Water Science and Technology
الوصف: The Anzali international wetland is a valuable habitat to a wide variety of aquatic flora and fauna. This wetland ecosystem is being threatened due to various pollutants particularly the heavy metals discharging from different point and non-point sources. Concentration of various heavy metals (Cr, Pb, Hg, Cu, Zn, Cd, Ag and Ti) was examined in the water body and Azolla filiculoides (an exotic fern in the Anzali wetland). The samples regarding water and A. filiculoides were randomly carried out in three parts of the wetland (eastern, central and western parts) in May 2015. After preparing and digesting the samples, the concentration of the heavy metals was measured using ICP OES method. The obtained results showed that the concentration of Zn in water and A. filiculoides samples was higher than other heavy meals in all parts of the wetland (p p A. filiculoides, it was found that all examined metals (except Cd and Ag) in A. filiculoides had significantly higher concentration than water sample, while Cd and Ag in water and A. filiculoides did not have a significant difference with each other. Based on the results, it can be concluded that A. filiculoides can effectively absorb Cr, Pb, Zn, Hg, Cu, Cd, Ag and Ti so that it might be used as a valuable species for the bioremediation and the removal of heavy metals from the wetland.
وصف الملف: application/pdf
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::df232965d8ff45dae517519a7cf07018Test
https://doaj.org/article/eab5c99b569f48598d422864c8cd2aa5Test -
38دورية أكاديمية
المؤلفون: Saeidi Mehrvarz, S., Ashouri Nodehi, M.
المصدر: Caspian Journal of Environmental Sciences, Vol 13, Iss 3, Pp 183-196 (2015)
مصطلحات موضوعية: Sorkhankol, North of Iran, Life form, Floristic richness, Chorology, Anzali Wetland, Environmental sciences, GE1-350, Science
الوصف: Sorkhankol Wildlife Refuge with an area of 1209 ha is located in the central part of Anzali Wetland. In total, 81 species belonging to 35 families and 68 genera were surveyed and identified on the basis of a floristic study from July 2013 through June 2014. The largest families are Poaceae (11 taxa), Asteraceae (8 taxa) Apiaceae, Brassicaceae and Cyperacae (5 taxa). The dominant life forms were cryptophyte (43.21%), followed by the therophytes (39.51%), hemicryptophytes (13.58%) and phanerophytes (3.7%). From the chorological point of view, the largest proportion of the flora belongs to the pluriregional elements (44.44%). A comparison between our study and other parts of the Anzali Wetland showed that Sorkhankol was not particularly species-rich. Currently, the major threats to the research area include eutrophication, pressure from boating and fishing activities, invasion of exotic species and other human induced disturbances.
وصف الملف: electronic resource
-
39دورية أكاديمية
المؤلفون: SH Janatmakan, M Javaheri Baboli, A Askary Sary, M Velayatzadeh
المصدر: Bihdāsht-i Mavādd-i Ghaz̠āyī, Vol 4, Iss 4 (16) زمستان, Pp 19-30 (2015)
مصطلحات موضوعية: Heavy metals, Muscle, Chemical Compositions, Fish, Anzali wetland, Food processing and manufacture, TP368-456
الوصف: This study aimed to evaluate protein, fat and ash contents as well as the concentrations of As, Hg and Cd in muscle tissues of Liza auratus cached from Anzali Wetland. Eighteen samples of Liza auratus were collected using gill net. Heavy metals were extracted using wet digestion method and the concentrations were measured by Atomic Absorption Spectrophotometer. Concentration of Hg, As and Cd in the muscle of mullet was 57.20±7.56, 97.29±13.27 and 200.80±31.39 µg/Kg. Moreover, the percentage (mean±SD) of protein, fat and ash in the muscle of the samples were determined as 17.69±0.42, 0.74±0.08 and 1.37±0.12%, respectively. The positive and significant relationship was observed between the concentration of Hg, As and Cd in the muscle of mullet (P
وصف الملف: electronic resource
-
40دورية أكاديمية
المؤلفون: M Fallahi email ; J Sabkara
المصدر: Majallah-i ̒Ilmī-i Shīlāt-i Īrān, Vol 24, Iss 2, Pp 29-42 (2015)
مصطلحات موضوعية: zooplankton, Anzali Wetland, Density, diversity, Agriculture, Aquaculture. Fisheries. Angling, SH1-691
الوصف: Anzali wetland is one of the most important places for migratory fishes. Zooplankton organisms are the first consumers in the ecosystem. They are perfect food for the larvae of fishes. Six stations from different areas of wetland were examined for the study of zooplankton population during March 2011 to April 2012. Sampling was done by tube (PVC) and passing through of 30 micron plankton net. The samples were identified and counted by inverted microscope. According to the results, 60 Genus and 6 phylum (11, 31, 10, 2, 1, 1, 1, 2 genus of phylum Protozoa, Rotatoria, Arthropoda, Gastrotricha, Mollusca, Tardigrada, Nematoda, Porifera, Annelida) respectively were identified. The results showed that the maximum annual average density of zooplankton was observed with 2497 ± 687number per litre in Karkan station and the population was more in the summer than in other seasons. Density of Rotatoria, protozoa and superclass Copepoda were 48%, 45% and 6% respectively. Results showed the population structure of zooplankton did not change much compared to past studies (due to improper environmental conditions), excluding Protozoa but the diversity of all zooplankton group is extremely declined. Kruskal Wallis test showed there was not significant difference between density of zooplankton in different stations, months and seasons (p>0.05), but significant differences were found between densities of different zooplankton phylum (p
وصف الملف: electronic resource
