scholarly journals Epipelic Diatom Communities in Pengilon Lake Dieng, Central Java

2019 ◽  
Vol 125 ◽  
pp. 01023 ◽  
Author(s):  
Tri Retnaningsih Soeprobowati ◽  
Jumari ◽  
Riche Hariyati ◽  
Fini Wulandari
Keyword(s):  
Diversity Index ◽  
Benthic Diatom ◽  
Acidic Environment ◽  
Diatom Species ◽  
Diatom Flora ◽  
Central Java ◽  
Physical Chemical ◽  
Diatom Communities ◽  
Tropical Areas ◽  
High Diversity

Diatom communities in the lake have an advantage of environmental assessment and paleo reconstruction study, due to the ability of diatom preserved in the sediment. There are only limited studies about taxonomy, ecology, and diversity of diatom flora in tropical areas, especially Indonesia. The main objective of the research is to describe the structure of benthic diatom communities in Pengilon Lake, together with physical chemical variables. Sediment samples were collected at an altitude of more than 2,000 msal habitats with pH around 5.40-6.86. A total of 83 diatom species identified as belonging to 16 families. The diversity index ranges from about 2.25 to 3.01 indicated the ecosystem that naturally stable with none diatom dominant. The most abundant genera were Eunotia with high diversity around 14 taxa. The composition of Eunotia assemblages was different among habitat and season variation. Eunotia has a wide tolerance of pH because of its ability to survive in an area with an acidic environment and circumneutral water. The most dominance diatom species in Pengilon Lake were Eunotia paludosa (Grunow) 39.2%, Nitzschia frustulum (Kutzing) 28.1%, Pinnularia viridis (Krammer & Lange-Bertalot) and Pinnularia divergentissima (Grunow) 24.6%.

scholarly journals Diversity Measurement Indices of Diatom Communities in the Tigris River within Wasit Province, Iraq

2018 ◽  
Vol 15 (2) ◽  
pp. 117-122
Author(s):  
Baghdad Science Journal
Keyword(s):  
Diversity Index ◽  
Diatom Species ◽  
Aquatic Life ◽  
Tigris River ◽  
Lotic Ecosystem ◽  
Evenness Index ◽  
River Quality ◽  
Diatom Communities ◽  
Richness Index ◽  
Diversity Measurement

The study was conducted to measure diatom species diversity in the lotic ecosystem across the Wasit Province for 12 months. The quantitative study of diatoms (phytoplankton) was investigated in the Tigris river. The density of algae was ranged from 60989 cell×103/l to 112780.82 cell×103/l in the five sites. These algae were belonging to 39 genera. The richness index values ranged from 1.53 at site 5 in January 2016 to 6.34 at site 1 and June2015. Shannon-Weiner diversity index (H´) was 2.33 in February 2016 and 3.72 in June 2015 both values at site 3, whereas Evenness index was 0.54 at site 5 in March2016 and 0.98 at site 1 in both August2015 and May2016. The lack of homogeneity of the appearance of species indicates the dominance of a few species with high densities, which is an indicator of the existence of environmental pressure. All studied indices showed that the Tigris River quality is suitable for the living aquatic life or may be slightly affected by the pollutants.

Teratological forms of diatoms (Bacillariophyceae) as indicators of water pollution in the western part of Puck Bay (southern Baltic Sea)

2008 ◽  
Vol 37 (2) ◽  
Author(s):  
Monika Dziengo-Czaja ◽  
Justyna Koss ◽  
Agnieszka Matuszak
Keyword(s):  
Water Pollution ◽  
Baltic Sea ◽  
Surface Sediments ◽  
Benthic Diatom ◽  
Organic Load ◽  
Diatom Species ◽  
Southern Baltic Sea ◽  
Diatom Communities ◽  
Southern Baltic ◽  
Puck Bay

Teratological forms of diatoms (Bacillariophyceae) as indicators of water pollution in the western part of Puck Bay (southern Baltic Sea)Studies of benthic diatom communities in the surface sediments of the Swarzewo area of Puck Bay were carried out during 1998 and 1999 in order to assess water quality, and in particular the organic load. Among the 192 taxa identified, teratological forms of diatoms were recorded in 17 diatom species, primarily in the species

scholarly journals Diatom species composition of the Nisava river and its tributaries Jerma and Temska rivers (southern Serbia)

2012 ◽  
Vol 64 (3) ◽  
pp. 1127-1140 ◽  
Author(s):  
Jelena Andrejic ◽  
Jelena Krizmanic ◽  
M. Cvijan
Keyword(s):  
Species Composition ◽  
Benthic Diatom ◽  
Future Research ◽  
Diatom Species ◽  
Diatom Flora ◽  
Chemical Agents ◽  
Floristic Analysis

The main objective of this paper is to report the diatom taxa identified from the Nisava River and its tributaries, the Jerma and Temska rivers. The study area included 11 sampling sites along the Nisava River, with one site on the Jerma River and one on the Temska River. Monthly samples (from stones, sediments and macrophytes) were collected from May 2008 to May 2009. Diatom frustules were cleaned with chemical agents, and mounted on permanent slides. In total, 194 diatom taxa were identified. The most species rich genera are Navicula (25), Nitzschia (17) and Gomphonema (13), while other genera are presented with one or more species. Detailed floristic analysis of the benthic diatom flora has not been conducted before on these rivers. Therefore, this paper provides a baseline for future research.

scholarly journals Diatom species composition in the Raska river (Southwestern Serbia)

2015 ◽  
pp. 29-40
Author(s):  
Danijela Vidakovic ◽  
Jelena Krizmanic ◽  
Sanja Sovran ◽  
Katarina Stojanovic ◽  
Jelena Djordjevic
Keyword(s):  
Species Composition ◽  
Benthic Diatom ◽  
Diatom Species ◽  
Diatom Flora ◽  
Epilithic Diatoms ◽  
Acid Method ◽  
Floristic Analysis

The paper presents data on the composition of epilithic diatoms in the Raska River. Samples were collected by scraping stone surfaces with a brush from 5 localities along the Raska River in April, June, August and November 2011 and March and May 2012. Diatom frustules were cleaned using cold acid method, and mounted on permanent slides. An investigation of the Raska River resulted in description of 106 diatom taxa. The most species rich genera are Navicula (10), Gomphonema (10) and Nitzschia (9), while other genera are presented with one or more species. Detailed floristic analysis of the benthic diatom flora in this river has not been conducted before. Therefore, this paper provides a groundwork for future researches.

Three new records for diatoms from the Nišava River and its tributary, the Jerma River (Southern Serbia)

2012 ◽  
Vol 41 (3) ◽  
Author(s):  
Jelena Andrejić ◽  
Jelena Krizmanić ◽  
Mirko Cvijan
Keyword(s):  
New Taxa ◽  
New Records ◽  
Benthic Diatom ◽  
Diatom Species ◽  
Diatom Flora ◽  
Floristic Richness ◽  
Chemical Agents ◽  
New Findings

AbstractThe main objective of this paper is to report three benthic diatom species from the Nišava and Jerma Rivers, which prove to be new findings in the context of the Serbian diatom flora. These are also new distributional records for all three species. Monthly samples (from stones, sediments and macrophytes) were collected from May 2008 to May 2009. Diatom frustules were cleaned using chemical agents, and mounted on permanent slides. Descriptions (main valve measurement of the populations in the Nišava and Jerma Rivers), ecology, distribution in Serbia and Europe, and appropriate photomicrographs of three species are presented. Navicula novaesiberica Lange-Bertalot and Neidiomorpha binodiformis (Krammer) Lange-Bertalot & Cantonati are rarely found in Europe, while Parlibellus protracta (Grunow) Witkowski is more common. Navicula novaesiberica and Neidiomorpha binodiformis were found at higher water temperatures in comparison to temperatures reported in the existing literature. These new taxa significantly contribute to diatom floristic richness of the Nišava and Jerma Rivers in Serbia.

scholarly journals Indicator taxa of benthic diatom communities: a case study in Mediterranean streams

2007 ◽  
Vol 43 (1) ◽  
pp. 1-11 ◽  
Author(s):  
E. Tornés ◽  
J. Cambra ◽  
J. Gomà ◽  
M. Leira ◽  
R. Ortiz ◽  
...  
Keyword(s):  
Benthic Diatom ◽  
Mediterranean Streams ◽  
Indicator Taxa ◽  
Diatom Communities

Kelimpahan dan Keanekaragaman Plankton Sebagai Bioindikator Kualitas Air di Perairan Pantai Sayung Kabupaten Demak Jawa Tengah

2021 ◽  
Vol 23 (1) ◽  
pp. 25-32
Author(s):  
Isnaini Nurul Maya Evita ◽  
Riche Hariyati ◽  
Jafron Wasiq Hidayat
Keyword(s):  
Water Quality ◽  
Diversity Index ◽  
Industrial Area ◽  
Parameter Analysis ◽  
Nitrate Content ◽  
Chemical Parameter ◽  
Pollution Levels ◽  
Physical Chemical ◽  
Sea Ranching ◽  
Index Value

Sayung coast is a area with a growing residential, sea ranching, and industrial area. Those aspects produce create waste that could harm the environment, directly or indirectly. Plankton is a biologic component that is used to indicate the changes of water quality in waters that has been polluted. These goals of this research are to know the water quality in Sayung coast area from the abundance of the plankton,  physical-chemical parameter of the water, and also the status of water saprobity. The samples are taken in July 2017 and April 2018, in Sayung coast waters, Demak. Plankton sampling and water from 5 sampling stasions are considered to represent the diversity of the plankton and water stability. Plankton is sampled using plankton net No.25, then preserved using 70% alcohol + 4% formaldehyde. The abiotic data measureted is nitrate content, temperature, pH, salinity, DO, and turbidity. Data analysis are done using Shannon Weiner’s diversity index (H’), diversty index (e), domination index (C), saprobic index. The result shows that there are 49 species of planktons are found, which are 38 fitoplankton, and 11 zooplankton. The highest group is Bacillariophyta which is 14,24%. The diversty index value of H’ 1,58 – 2,45; therefore the Sayung coast waters is catagorized as stable. The index value of e ranges from 0,64 – 1; index C values ranges from 0,08 – 0,22; and the saprobirity index value is in β-Meso/Polisaprobik to α-Mesosaprobik phase with a very light to very high pollution levels. The physical-chemical parameter analysis of Sayung coast waters in overall is still suitable to support plankton’s life.

Inhibitory effect of benthic diatom species on three aquaculture pathogenic vibrios

2017 ◽  
Vol 27 ◽  
pp. 131-139 ◽  
Author(s):  
Ceres A. Molina-Cárdenas ◽  
M. del Pilar Sánchez-Saavedra
Keyword(s):  
Inhibitory Effect ◽  
Benthic Diatom ◽  
Diatom Species ◽  
Pathogenic Vibrios
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