The epilithic and epipelic diatom flora of the Balikhli River, Northwest Iran

Mirzahasanlou, Jamileh Panahy; Nejadsattari, Taher; Ramezanpour, Zohreh; Namin, Javid Imanpour; Asri, Younes

doi:10.3906/bot-1711-46

Cited by 10 publications

(5 citation statements)

References 17 publications

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“…Seasonal changes in various forms such as the effect on air temperature, river inflows and consequently increase nutrients, water flows and consequently salinity changes in river inflows and decrease salinity can have important effects on the population change of diatoms [19]. In this study, Cyclotella mnengiana was observed in all sampling periods and so Cyclotella mnengiana often found in oligotrophic environments, both marine and fresh water ecosystems.…”

Section: Wwwblogspotcommentioning

confidence: 54%

"Quantitative and Qualitative Study of Diatoms Around Fifh Cage in the Southern Basin of the Caspian Sea"

Tahami

2021

BJSTR

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The presence of abundant nutrients can pose risks such as changes in the dynamics of diatom communities, as well as allowing the overgrowth of harmful species, the possibility of non-native and invasive aquatic growth in the Caspian Sea and vice versa, reducing or eliminating some species and algal blooms. It may be dangerous for breeding. Therefore, the study of diatom communities and their interaction with fish farming is necessary and important. Therefore, in this study, the waters around the cage and also before and after the fish farming period in the cage were sampled and identified based on the presented methods. Fish breeding cages are located in the southern basin of the Caspian Sea at a depth of 30 meters from the sea shore. North, east, south and west of the cage were sampled from distances next to the fish breeding cage (shade), 200m from the cage and 1000 m from the cage at depths of surface, middle and depth (30m). In total, a total of 39 species of 20 genera of diatoms were identified during the sampling performed during four periods which include Actinocyclus(2 species), Chaetoceros (5 species), Cocconeis (1 species), Coscinodiscus (3 species), Cyclotella(1 species), Cymbella(1 species), Dactyliosolen(1 species), Diatoma (1 species), Diploneis(1 species), Gyrosigma (3 species), Hantzschia (1 species), Hyalodiscus (1 species), Navicula (3 species), Nitzschia(7 species), Pseudonitzschia (1 species), Pleurosigma (1 species), Rhizosolenia (2 species), Skeletonema (2 species), Talassiosira (1 species), Thalassionema (1 species). The highest density of diatoms was in the pre-breeding period and the highest density was observed in the western region (9747±1562×104 per cubic meters). At the beginning of the breeding period, the highest diatomaceous earth density was observed in the east (9454±864×104 per cubic meters) and then in the middle of the breeding period, the density decreased significantly in all areas and then at the end of the breeding period, the diatomaceous earth density increased again.Changes can be affected by environmental conditions. Which is one of the most important factors of seasonal changes that can affect the air temperature, river inflows and thus increase nutrients, water flows and as a result of salinity changes and river inflows. Salinity as well as excretion of feces and food not eaten by fish. Also, the highest density before the growing period and in the deep layer was due to low water temperature, which is due to the cold-loving nature of this branch (P <0.05). While the lowest density was in the middle of the rearing period, which may be due to the impact of salmon farming ecosystems in cages. Also, the highest density before the growing period and in the deep layer was due to low water temperature, which is due to the cold-loving nature of this branch (P <0.05). While the lowest density was in the middle of the rearing period, which may be due to the impact of salmon farming ecosystems in cages.

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Section: Wwwblogspotcommentioning

confidence: 54%

"Quantitative and Qualitative Study of Diatoms Around Fifh Cage in the Southern Basin of the Caspian Sea"

Tahami

2021

BJSTR

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“…Based on the comparison study the Cymbella pernodensis Maillard, has not been reported in Iran [19][20][21][22][23][24][25][26][27][28][29][30]. It is a freshwater taxon which occurred only in stations 5 & 6, in all months except spring with the following environmental conditions: alkaline pH (8.71), moderate to high conductivity (502-834 μs.cm -1 ), oligotrophic to eutrophic conditions, temperature (4.9 -19.9 °C), TDS (164 -335 mg.l -1 ), BOD (˂ 8 mg.l -1 ), DO (˂ 10 mg.l -1 ), ORP (102), Salinity (< 0.…”

Section: Oceanography and Fisheries Open Access Journalmentioning

confidence: 99%

A comparative Study of Diatom Flora of the Taleghan River in Iran with Other Studies Around the World

Naseri¹

2021

OFOAJ

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It is important to compare the flora of different parts of the world which have the various environmental condition. The flora of Taleghan dam and River was identified from November 2017 to October 2018 and the result is compared with 15 regions of recent studies in different continents. The flora of Africa with 66 percent common taxa was the highest similar to our study. Based on the comparison the Ulnaria ulna (Nitzsch) Compère, Navicula cryptotenella Lange-Bertalot Gomphonema acuminatum Ehrenberg and Nitzschia palea (Kützing) W Smith was the cosmopolitan species and Achnanthidium eutrophilum (Lange-Bertalot) Lange-Bertalot, Frustulia tugelae Cholnoky, Nitzschia acula (Kützing) Kützing in Rabenhors, and some other species were rare taxon. 45 out of 203 diagnosed species and genus Seminavis D.G.Mann is new record for diatoms flora of Iran. Also, the species Cymbella pernodensis Maillard, Cymbella novazeelandiana Krammer and Achnanthidium druartii Rimet & Couté were new records for Asia.

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“…The physicochemical parameters presented the pH range of 6.7-6.9 for the Tizab spring that was neutral and the pH of 7.5-7.7 for the Tizab River which was slightly alkaline. Therefore, (Jamaloo et al, 2006;Moghadam, 1975;Witkowski et al, 2007;Compere, 1981;Kheiri et al, 2018a;Wasylik, 1975 (Moghadam, 1975;Soltanpour-Gargari et al, 2011;Atazadeh et al, 2007;Synder et al, 2001;Witkowski et al, 2007;Nejadsattari, 2005;Compere, 1981;Panahy-Mirzahasanlou et al, 2018;Kheiri et al, 2018a; (Moghadam, 1975;Wasylik, 1975;Soltanpour-Gargari et al, 2011;Compere, 1981;Nejadsattari, 2005; (Moghadam, 1975;Soltanpour-Gargari et al, 2011;Atazadeh et al, 2007;Witkowskiet al, 2007;Shams et al, 2012;Nejadsattari, 2005;Cheraghpour et al, 2013;Zarei-Darki, 2009a;Compere, 1981;Panahy-Mirzahasanlou et al, 2018;Shariatmadari et al, 2007; (Moghadam, 1975;Synder et al, 2001;Witkowski et al, 2007;Zarei-Darki, 2011a;Kheiri et al, 2018a;Kheiri et al, 2018b;Hirano, 1973;.…”

Section: Location and Description Of The Sampled Spring And The Sprinmentioning

confidence: 99%

“…4 Ref : Hofmann et al, 2011 (p. 315, pl. 97:15-20) Dimension: 16.20 μm long, 3.80 μm wide, 2005;Zarei-Darki, 2011a;Compere, 1981;Panahy-Mirzahasanlou et al, 2018;Kheiri et al, 2018b). (Noroozi et al, 2008).…”

Section: Distribution In Iran: This Taxon Is Widespreadmentioning

confidence: 99%

“…Gomphonema lateripunctatum was only distributed at western Iran (Witkowski et al, 2007). The remaining twenty species and near 2/3 of flora were found widespread throughout Iran (Hirano, 1973;Moghadam, 1975;Synder et al, 2001;Nejadsattari, 2005;Jamaloo et al, 2006;Atazadeh et al, 2007;Witkowski et al, 2007;Shariatmadari et al, 2007;Zarei-Darki, 2009a;Zarei-Darki, 2009b;Khosravi-Rineh et al, 2011;Masoudi et al, 2011;Soltanpour Gargari et al, 2011;Shams et al, 2012;Cheraghpour et al, 2013;Kheiri et al, 2013;Zarei-Darki, 2011a;Kheiri et al, 2018a;Kheiri et al, 2018b;Panahy-Mirzahasanlou et al, 2018;Kheiri, 2019).…”

Section: Distribution In Iran: This Taxon Is Widespreadmentioning

confidence: 99%

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Diatom Diversity in the Spring and Spring-fed River of Tizab Region (Central Alborz), Iran

Kheiri

2019

JPR

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Diatoms are the most diverse algae in aquatic ecosystems and springs are valuable as the biodiversity conservative habit and a crucial source of drinking water for mankind. Therefore, study of springs' algal flora biodiversity leads us to know more about conservation process. In this research, the diatom biodiversity of Tizab Spring and the spring-fed river was studied in summer and autumn 2017 for the first time. Thirty-three species were identified from which two species (Achnanthidium pyrenicum (Hustedt) H. Kobayasi and Caloneis aerophila W. Bock) are new records for diatom flora of Iran. The data revealed the flora is much similar to Karaj River flora. This similarity can be due to close geographical locations, as both rivers are located in the Central Alborz region. The distribution pattern of species was studied in Iran based on present references on Iranian aquatic ecosystems. This study presented that two-third of diatom species had a widespread distribution. Iranian flora data in comparison with European and American database showed that most species are the elements of the northern hemisphere. Diatom biodiversity studies in Central Alborz region is in its first steps. Therefore, much research is needed to reveal the diatom biodiversity and the potentiality of new species in this region.

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The epilithic and epipelic diatom flora of the Balikhli River, Northwest Iran

Cited by 10 publications

References 17 publications

"Quantitative and Qualitative Study of Diatoms Around Fifh Cage in the Southern Basin of the Caspian Sea"

"Quantitative and Qualitative Study of Diatoms Around Fifh Cage in the Southern Basin of the Caspian Sea"

A comparative Study of Diatom Flora of the Taleghan River in Iran with Other Studies Around the World

Diatom Diversity in the Spring and Spring-fed River of Tizab Region (Central Alborz), Iran

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