Occurrence of Harmful Blue-green Algae at Algae Alert System and Water Quality Forecast System Sites in Daegu and Gyeongsangbuk-do between 2012 and 2019

Objectives:We analyzed the occurrence of blue-green algae at Algae Alert System and Water Quality Forecast System sites in Daegu and Gyeonsangbuk-do between 2012 and 2019.Methods:Data from 17 sites in Daegu and Gyeonsangbuk-do were collected and reclassified to 8 Nakdong river (ND) sites and 9 water source (WS) sites. Influencing factors on the occurrence of blue-green algae were investigated.Results and Discussion:At the ND sites, blue-green algae were observed in the range of 0-495,360 cells/mL. Between 2012 and 2019, the average number of blue-green algae increased as the sites go downstream from ND-1 (Sangju weir) to ND-8 (Dalseong weir), while the number of blue-green algae was lower at the site in-between weirs than the site adjacent to weir. At the WS sites, blue-green algae were observed in the range of 0-112,000 cells/mL. The average numbers of blue-green algae in 2014, 2015 and 2017 were higher than those of other years. The dominant species of blue-green algae was Microcystis at all the sites during the summer when the water temperature was high; when the water temperature was low Aphanizomenon had higher rates of dominance. Water temperature was positively correlated with the number of blue-green algae grown, while the dissolved oxygen concentration was found to have a negative correlation with it. pH and chlorophyll-a were less correlated.Conclusions:In Daegu and Gyeongsangbuk-do, the main stream of the Nakdong river showed higher blue-green algae occurrence than the water source sites. In most cases, Microcystis was dominant species. In the main stream of Nakdong river, blue-green algae tended to occur more downstream, and the number of blue-green algae was higher at sites close to weir than sites in-between weirs. The occurrence of blue-green algae was highly related to water temperature.

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An Ecological Observation on Inland water Ecosystem in Erbil –Iraq Kurdistan with particular reference to blue green algae Glaucospira

Baghdad Science Journal ◽

10.21123/bsj.11.3.1387-1396 ◽

2014 ◽

Vol 11 (3) ◽

pp. 1387-1396

Author(s):

Baghdad Science Journal

Keyword(s):

Water Temperature ◽

Green Algae ◽

Physicochemical Parameters ◽

Inland Water ◽

Blue Green Algae ◽

Neutral Ph ◽

Water Ecosystem ◽

Regular Sampling

Regular sampling for six months from January to July 2012 were taken in small, shallow, perennial, standing ponds near the Greater Zab River, Gwer district, Erbil. A variety of physicochemical parameters were determined. Air and water temperature were falling between 15.2 - 34.7 ? C and 15.5 and 26.5 ?C. The waters are neutral (pH 7.38-8.27), hard, alkaline, salty, high in TDS and EC (892-966?S/cm, and rich in nutrients (NO3: 2.1-4.1mg/l, PO4: 0.33-0.62 mg / l , SO4: 24.7-80.2 mg / l ). The attention fixed on a filamentous blue- green algae Glaucospira Lagerheim, 1982) which is new to Iraqi flora. It is a filament (trichome), solitary, pale or yellowish blue – green, without sheath, Screw like coiled, motile, some of them are actively motile. In this study nine species were identified, classified and described with their original and hand drawing, photo vis.; Glaucospira sp.: syn. Spirulina abreviata Lemm. ex Kleb. and Lemm. , G. agilissima Lag., G. laxissima G.S.West syn.: Spirulina laxissima f. major Des., Glaucospira sp. syn.: Spirulina tenuior Lag.,Glaucospira sp. Syn.: Spirulina corakiana Playf., Glaucospira sp.syn.: Sprulina nodosa Scham. Glaucospira sp. syn.: Spilurina baltica Mart.,Glaucospira sp. Syn.: Spirulina magnifica Cop. And Glaucospira sp. syn.: Spirulina subtilissima Mostly they are from Spiralina Turpin ex Gomont.

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Phytoplankton diversity and their succession in water bodies of the Lednice park during 2002 season

Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis ◽

10.11118/actaun200452020083 ◽

2004 ◽

Vol 52 (2) ◽

pp. 83-96

Author(s):

Zohreh Ramezanpoor ◽

Ivo Sukop ◽

Jiří Heteša

Keyword(s):

Dissolved Oxygen ◽

Water Temperature ◽

Algal Bloom ◽

Secchi Depth ◽

Water Source ◽

Water Bodies ◽

Phytoplankton Diversity ◽

Blue Green Algae ◽

Phytoplankton Communities ◽

Dominant Feature

Phytoplankton communities of three water bodies in the Lednice park were studied from 22nd April till 1st October 2002. These water bodies are the Zámecký pond, Růžový pond and the Dyje River, which is water source of both ponds.Phytoplankton samples were taken every two weeks between 8 - 9 am. Collected phytoplankton samples were preserved with 4% formalin solution and Lugol solution (JJK) and transported to the laboratory. They were determined and counted using inverted microscope. Water temperature, pH and dissolved oxygen were measured in the field using digital portable instruments. Total of 317 phytoplankton species were determined in this study.Heavy algal bloom was observed in the Zámecký pond in mid-summer coinciding with increase in water temperature. Fish diseases and partial mortality occurred during the period of algal bloom and unpleasant smell was dominant feature. A light algal bloom was also observed in the Růžový pond and the Dyje River nearly by the end of summer.The main algae species responsible for blue-green algae bloom were Anabaena flos-aquae, Microcystis aeruginosa, M. ichtyoblabe, M. flos-aquae and M. wesenbergii. Dissolved oxygen values varied between 3.4 - 19.5 mg l-1, pH ranged from 7.6 - 9.7. Secchi depth varied from 0- 65 cm in the Zámecký pond, 15-45 cm in the Růžový pond and 35-65 cm in the Dyje River. Concentration of total phosphate, nitrate and chlorophyll-a in the Dyje River before drainage into the Zámecký and Růžový pond verified heavy nutrient load (Total-P = 0.3, NO3- = 12 mg.l-1) of the river. Although the Dyje River is main water source for both ponds, presence of relatively different phytoplankton communities in these two ponds suggest that probably different nutrient sources might be responsible for differences in phytoplankton communities and eutrophication patterns in the Zámecký pond as compared to the Růžový pond.

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Soil Algae and mosses role in biocenoses formation in the tailings of Mikhailovsky Mining and Beneficiation Plant of Kursk Magnetic Anomaly

Samara Journal of Science ◽

10.17816/snv201871116 ◽

2018 ◽

Vol 7 (1) ◽

pp. 87-91

Author(s):

Olga Vyacheslavovna Nagornaya ◽

Antonina Valentinovna Golovastikova

Keyword(s):

Magnetic Anomaly ◽

Green Algae ◽

Dominant Species ◽

Soil Algae ◽

Kursk Magnetic Anomaly ◽

Algal Communities ◽

Beneficiation Plant ◽

Blue Green Algae ◽

General Studies

The paper presents the results of studies investigating the role of representatives of Algae and Bryophyta divisions in the composition of biocenoses dumps loess-like loam and clay of the Callovian of different ages (5-, 15-, 25 years) of Mikhailovsky Mining and Beneficiation Plant of Kursk Magnetic Anomaly. The author considers the role of soil Algae and mosses as indicators of biocenosis changes in connection with the peculiarities of the lithological framework and age of the dumps. It is proved that successione changes in communities of soil Algae and mosses coincide with succesional changes in the phytocenoses of the dumps in General. Studies have shown that the primary satelitales dumps are the representatives of the department of blue-green Algae Cyanophyta. They form a mono community in 5 year dumps clay of the Callovian and dominate in 5 year dumps. Further formation of the algae Alps in all types of studied rocks is of zonal type. The first of the mossy plants of the Bryophyta dumps division inhabits Ceratodon purpureus (Hedw.). It is the dominant species and persists on all breeds up to the age of 25 as the least demanding of the substrate. Further, the formation of the community of mosses is on a zonal type and lesavignon loam, on average, 15 years faster. It is found that algal communities and bryophytes cenoses form at different speeds on the soil stockpiles. It has been calculated that the stabilization of Algae cenoses will require about 19 years for the Quaternary loess and 32 years on the clay of the Callovian. Stabilization of the community of moss will require about 35 years for the loess and about 70 years on the clay of the Callovian.

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Freeze-Fracture Replication in the Ultrastructure of Blue-Green Algae

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100060386 ◽

1967 ◽

Vol 25 ◽

pp. 74-75

Author(s):

L. V. Leak

Keyword(s):

Cell Wall ◽

Electron Microscope ◽

Green Algae ◽

Three Dimensional ◽

Freeze Fracture ◽

Electron Microscopic ◽

Photosynthetic Membranes ◽

Blue Green Algae ◽

Cell Biol ◽

Cellular Components

Electron microscopic observations of freeze-fracture replicas of Anabaena cells obtained by the procedures described by Bullivant and Ames (J. Cell Biol., 1966) indicate that the frozen cells are fractured in many different planes. This fracturing or cleaving along various planes allows one to gain a three dimensional relation of the cellular components as a result of such a manipulation. When replicas that are obtained by the freeze-fracture method are observed in the electron microscope, cross fractures of the cell wall and membranes that comprise the photosynthetic lamellae are apparent as demonstrated in Figures 1 & 2.A large portion of the Anabaena cell is composed of undulating layers of cytoplasm that are bounded by unit membranes that comprise the photosynthetic membranes. The adjoining layers of cytoplasm are closely apposed to each other to form the photosynthetic lamellae. Occassionally the adjacent layers of cytoplasm are separated by an interspace that may vary in widths of up to several 100 mu to form intralamellar vesicles.

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