scholarly journals Longitudinal and seasonal succession of algal periphyton colonization in lowland river (Tundzha River Part of Turkey)

2016 ◽  
Author(s):  
Burak Öterler
Keyword(s):  
Environmental Factors ◽  
Dissolved Oxygen ◽  
Green Algae ◽  
Environmental Variables ◽  
Diversity Index ◽  
Seasonal Succession ◽  
Lowland River ◽  
Blue Green Algae ◽  
Periphytic Algae ◽  
Wiener Diversity Index

The aim of this paper is to determine and compare the environmental factors controlling longitudinal colonisation of periphytic algae in agricultural and urbanization effects of a lowland river, the Tundzha River, located in Turkish Tunca. To investigate the effect of the environmental factors on periphyton colonization at the river, 6 stations were selected and samples were collected between April 2012 and March 2013. Canonical correspondence analyses have been applied to clarify relationships between environmental variables and periphytic algae. During the study, the Shannon-Wiener diversity index (H′) varied from 1.62 to 3.91. The phytoplankton biovolume was positively related to pH, temperature, salinity, chlorophyll- a and nutrients, and was negatively correlated with dissolved oxygen, turbidity, and silicate. Out of the 5 divisions and of 73 identified species of phytoplankton, the diatoms, namely Fragilaria ulna, Cymbella tumida, Cocconeis placentula, Gomphonema acuminatum and Cymbella cystula were found to be dominant. In addition to these species, the biovolumes of filamentous diatom Melosira varians, filamentous blue-green algae Oscillatoria limosa, and placcoderm desmids Cosmarium botrytis were determined to be at high levels during the year. The euglenoid blooms in St.5 showed many times during the study period.

scholarly journals Longitudinal and seasonal succession of algal periphyton colonization in lowland river (Tundzha River Part of Turkey)

2016 ◽  
Author(s):  
Burak Öterler
Keyword(s):  
Environmental Factors ◽  
Dissolved Oxygen ◽  
Green Algae ◽  
Environmental Variables ◽  
Diversity Index ◽  
Seasonal Succession ◽  
Lowland River ◽  
Blue Green Algae ◽  
Periphytic Algae ◽  
Wiener Diversity Index

The aim of this paper is to determine and compare the environmental factors controlling longitudinal colonisation of periphytic algae in agricultural and urbanization effects of a lowland river, the Tundzha River, located in Turkish Tunca. To investigate the effect of the environmental factors on periphyton colonization at the river, 6 stations were selected and samples were collected between April 2012 and March 2013. Canonical correspondence analyses have been applied to clarify relationships between environmental variables and periphytic algae. During the study, the Shannon-Wiener diversity index (H′) varied from 1.62 to 3.91. The phytoplankton biovolume was positively related to pH, temperature, salinity, chlorophyll- a and nutrients, and was negatively correlated with dissolved oxygen, turbidity, and silicate. Out of the 5 divisions and of 73 identified species of phytoplankton, the diatoms, namely Fragilaria ulna, Cymbella tumida, Cocconeis placentula, Gomphonema acuminatum and Cymbella cystula were found to be dominant. In addition to these species, the biovolumes of filamentous diatom Melosira varians, filamentous blue-green algae Oscillatoria limosa, and placcoderm desmids Cosmarium botrytis were determined to be at high levels during the year. The euglenoid blooms in St.5 showed many times during the study period.

scholarly journals Status of plankton diversity and biological productivity of Sahastradhara stream at Uttarakhand, India

2012 ◽  
Vol 4 (1) ◽  
pp. 96-103 ◽  
Author(s):  
D. S. Malik ◽  
Umesh Bharti
Keyword(s):  
Green Algae ◽  
Habitat Degradation ◽  
Diversity Index ◽  
Anthropogenic Activities ◽  
Ecological Indicator ◽  
Biological Productivity ◽  
Present Contribution ◽  
Blue Green Algae ◽  
Wiener Diversity Index ◽  
Plankton Diversity

The present contribution encompasses on plankton and biological productivity as ecological indicator for identifying the ecological quality of Sahastradhara stream (between 27 km stream stretches), located in the Doon Valley of Garhwal region in India. Monthly sampling from all the sampling sites was made for a period of 12 months (May 2009 – April 2010) at 9:00-11: 00 AM. A total of 40 taxa from different classes of plankton and zooplankton were reported. The phytoplankton (32 sp.) was found being the most abundant taxa than zooplankton (9 sp.) inSahastradhara stream. Fluctuation in the phytoplankton density was recorded highest (1536 unit/l) during winter and lowest (20 unit/l) during monsoon. Zooplanktons were reported to be maximum (147 unit/l) during summer and minimum (3 unit/l) during monsoon. The total diatoms were reported highest (1022unit/l) during starting the winter and lowest (4 unit/l) during monsoon. Green algae and blue green algae were reported to be maximum during winter and minimum during summer. The Shannon-wiener diversity index calculated for the density ofBacillariophyceae (0.2180-0.366), Chlorophyceae (0.208-0.367) and Cyanophyceae (0.391-0.366) and correlation was made between Plankton biomass and physico-chemical parameters to analyses the relative features of the both variables. The density of plankton and biological productivity were influenced by disturbances in the photic zone and indiscriminate anthropogenic activities for tourist development resulted aquatic habitat degradation in stream ecosystem.

scholarly journals The Dynamic of Blue-Green Algae (Cyanobacteria) in Eutrophic Tropical Waters, The Cirata Reservoir

2021 ◽  
Vol 1 (1) ◽  
pp. 1-6
Author(s):  
Fariha Luthfiani ◽  
Sunardi Sunardi ◽  
Hikmat Kasmara
Keyword(s):  
Water Quality ◽  
Community Structure ◽  
Green Algae ◽  
Diversity Index ◽  
Species Abundance ◽  
Secondary Data ◽  
Environmental Parameters ◽  
Quality Parameters ◽  
Zooplankton Abundance ◽  
Blue Green Algae

The quality of reservoir waters depends on changes in their physical, chemical, and biological components. Changes in these parameters lead to the emerging of many problems in the reservoir, such as eutrophication and changes in the composition of the phytoplankton community in the reservoir ecosystem. This eutrophication impact can trigger an explosion of dangerous phytoplankton population, such as blue-green algae (Cyanobacteria). Research on the relationship between water quality and the community structure of Cyanobacteria has been carried out. This study used secondary data from the water monitoring report of the Cirata Reservoir from 2013-2017. This study aimed to obtain information on the community structure of Cyanobacteria and environmental parameters that affected the abundance of Cyanobacteria in the reservoir. Species abundance, diversity index, and dominance index were analyzed to determine changes in the community structure of Cyanobacteria in each of the years. Cyanobacteria abundances were classified using cluster analysis. Water quality parameters such as temperature, transparency, pH, carbon dioxide, nitrate, nitrite, and zooplankton abundance as independent variables, and levels of Cyanobacteria abundances as the dependent variable was analyzed using discriminant analysis. This study showed that the abundance of Cyanobacteria in the Cirata Reservoir is dominated by the Stanieria (a genus of the Pleurocapsales order) every year and the parameter that significantly affects the level of Cyanobacteria abundance was nitrate (NO3-N).

scholarly journals KEANEKARAGAMAN ACARINA DI PUSAT INOVASI AGRO TEKNOLOGI MANGUNAN

2020 ◽  
Vol 25 (1) ◽  
pp. 62-71
Author(s):  
Soenarwan Hery Poerwanto ◽  
Anggun Handiani ◽  
Dila Hening Windyaraini
Keyword(s):  
Soil Moisture ◽  
Environmental Factors ◽  
Air Temperature ◽  
Technology Innovation ◽  
Diversity Index ◽  
Air Humidity ◽  
Annona Squamosa ◽  
Wiener Diversity Index ◽  
Sample Extraction ◽  
Sampling Points

Penelitian ini dilakukan untuk mengetahui keanekaragaman Acarina dan faktor lingkungan yang mempengaruhi keberadaan Acarina di Pusat Inovasi Agro Teknologi (PIAT) Mangunan, Yogyakarta. Penelitian ini dilakukan di PIAT Mangunan untuk pengambilan sampel dan Laboratorium Sistematika Hewan bagian Parasitologi Fakultas Biologi UGM untuk preparasi dan identifikasi. Metode yang digunakan adalah ekstraksi sampel menggunakan corong Barlese Tullgren dengan beberapa modifikasi. Sampel diambil pada 3 area vegetasi (sirsak, srikaya, dan sawo) dan setiap area diambil lima titik sampling. Pengukuran lingkungan meliputi kelembaban udara dan suhu udara diukur dengan alat higrometer, pH, dan suhu tanah dengan soil tester digital, serta kelembaban tanah dengan soil tester Takemura DM-5. Acarina yang diperoleh dilihat di bawah mikroskop dan di-mounting dengan larutan hoyer’s. Identifikasi Acarina menggunakan buku identifikasi A Manual of Acarology. Data yang diperoleh dari penelitian dianalisis menggunakan indeks keanekaragaman Shannon-Wiener. Berdasarkan identifikasi Acarina yang telah dilakukan, didapatkan 20 Family dan 28 Genus dan 399 cacah individu. Tingkat keanekaragaman Acarina termasuk dalam kategori sedang. Faktor lingkungan yang mempengaruhi kehadiran Acarina adalah suhu dan kelembaban.THE DIVERSITY OF ACARINA IN AGRO TECHNOLOGY INNOVATION CENTER MANGUNANThis study was aimed at determining the diversity of Acarina and environmental factors that affect the existence Acarina at Agro Technology Innovation Center (ATIC) Mangunan, Yogyakarta. This study was conducting at ATIC Mangunan for sampling and the Animal Systematics Laboratory of the Parasitology, Faculty of Biology, Gajah Mada University for preparation and identification. The method used was sample extraction using Barlese Tullgren funnel with several modifications. Samples were taken at 3 vegetation areas (soursop, sarikaya a.k.a Annona squamosa, and sapodilla) and each area was taken five sampling points. The environmental measurements include air humidity and air temperature measured by means of a hygrometer, pH and soil temperature with digital soil tester, and soil moisture with a soil tester Takemura DM-5. Acarina obtained was seen under a microscope and mounted with Hoyer’s solution. The identification of Acarina using identification book A Manual of Acarology. The data obtained from the study were analyzed using the Shannon-Wiener diversity index. Based on Acarina’s identification, 20 families and 28 genera and 399 individual numbers were obtained. The level of diversity of Acarina is categorized as the medium category. The environmental factors that influence the presence of Acarina are temperature and humidity. 

scholarly journals Environmental Variables and Fisheries Diversity of the Nuwa River, Panchthar, Nepal

2020 ◽  
Vol 13 (13) ◽  
pp. 69-74
Author(s):  
Jash Hang Limbu ◽  
Archana Prasad
Keyword(s):  
Dissolved Oxygen ◽  
Fish Species ◽  
Environmental Variables ◽  
Diversity Index ◽  
Environmental Parameters ◽  
Influential Factors ◽  
Water Volume ◽  
Fish Diversity ◽  
Fish Assemblage Structure ◽  
Fish Samples

The fish samples were collected from October 2017 to June 2018 in Nuwa River from four sampling stations by using cast net, bamboo fish trap and mosquito nets. Environmental parameters: water temperature, dissolved Oxygen (DO), CO2, pH, hardness and water velocity were analyzed during each field visit. Eight fish species were collected in present study. The most copious species were Schizothorax plagiostomus, and Schistura multifaciatus. Shannon-Weiner fish diversity index and species richness recorded were highest at station I and lowest at station III, similarly, evenness index was highest at station I and lowest at station III. The water volume, water depth, and the availability of substrates were found to be major influential factors for the weight and length of the fishes. The redundancy analysis (RDA) portrayed that environmental variables like dissolved oxygen, free- carbon dioxide, and pH were found to be pivotal variables to shape the fish assemblage structure of Nuwa River. The cluster analysis delineated that similarity between fish species subsided as the distance of sites turgid.

scholarly journals The Tall-Herb and Tall-Grass Plant Communities of the Class Mulgedio-Aconitetea in the Subalpine Belt of the Krivánska Malá Fatra MTS (Slovakia)

Hacquetia ◽  
2008 ◽  
Vol 7 (2) ◽  
pp. 141-159
Author(s):  
Ivana Šibíková ◽  
Jozef Šibík ◽  
Ivan Jarolímek
Keyword(s):  
Plant Communities ◽  
Environmental Variables ◽  
Diversity Index ◽  
Floristic Composition ◽  
Numerical Classification ◽  
Indicator Values ◽  
Tall Grass ◽  
Data Set ◽  
Subalpine Belt ◽  
Wiener Diversity Index

The Tall-Herb and Tall-Grass Plant Communities of the ClassMulgedio-Aconiteteain the Subalpine Belt of the Krivánska Malá Fatra MTS (Slovakia)The following paper reports the results of phytosociological research of tall-herb and tall-herb plant communities within the classMulgedio-Aconiteteain the subalpine belt of the Krivánska Malá Fatra Mts. The data set of 209 relevés was sampled and analysed using numerical classification and ordination. Major ecological gradients were interpreted using Ellenberg's indicator values and the Shannon-Wiener diversity index. Ten associations within five alliances were distinguished and characterised:Aconitetum firmi, Digitali ambiguae-Calamagrostietum arundinaceae, Helianthemo grandiflorae-Calamagrostietum arundinaceae, Potentillo aurei-Calamagrostietum arundinaceae, Allio victorialis-Calamagrostietum villosae, Festucetum carpaticae, Adenostylo alliariae-Athyrietum alpestris, Aconito firmi-Adenostyletum alliariae, Geranio robertiani-Delphinietum elatiandAconito firmi-Rumicetum alpini.Relationships between the floristic composition of the communities and environmental variables were analysed by canonical correspondence analysis.

scholarly journals VARIABILITY OF REMOTE SENSING SPECTRAL INDICES IN BOREAL LAKE BASINS

2018 ◽  
Vol XLII-2 ◽  
pp. 411-417 ◽  
Author(s):  
T. Hakala ◽  
I. Pölönen ◽  
E. Honkavaara ◽  
R. Näsi ◽  
T. Hakala ◽  
...  
Keyword(s):  
Remote Sensing ◽  
Water Quality ◽  
Dissolved Oxygen ◽  
Green Algae ◽  
Quality Parameters ◽  
Hyperspectral Data ◽  
Water Quality Parameters ◽  
Spectral Indices ◽  
Blue Green Algae ◽  
Measured Water

Remotely sensed hyperspectral data has widely been used to determine water quality parameters in oceanic waters. However in freshwater basins the dependence between the hyperspectral data and the parameters is more complicated. In this work some ideas are presented concerning the study of this dependence. The data used in this study were collected from the lake Hiidenvesi in southern Finland. The hyperspectral data consists of reflectances in 36 bands in the wavelength area 508…878 nm and the separately measured water quality parameters are turbidity, blue-green algae, chlorophyll, pH and dissolved oxygen. Hyperspectral data was used as bare band reflectances, but also in the form of two simple spectral indices: ratio A / B and difference A − B, where A and B go through all the bands. The correlations of the indices with the parameters were presented visually as 1- or 2-dimensional arrays. To examine the significance on the results of different variables, the data was classified in two different ways: the natural basins and the values of the water quality parameters. It was noticed that the variability of the correlation arrays was particularly strong among different basins in both the magnitude of correlation and the best performing indices. Further studies are needed to clarify which features of the basins are of most importance in predicting the shapes of the correlation arrays.

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

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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