Characterization of Algal Community of Yongdam Reservoir and Identification of Ecological Factors Inducing the Changes in Community Composition

Peristylus goodyeroides is a terestrial orchid that scattered around Southeast Asia. Morphological characters of P. goodyeroides can vary, depending on the ecological factors and habitat. Cytological characters in the form of chromosome configurations can be used as a taxonomic tool for the process of identifying and understanding variations in taxa. The purpose of this study was to determine the morphological characters and chromosome configuration of the P. goodyeroides from Curug Setawing, Kulonprogo. The method used was morphological characterization and plant chromosome preparation by squash method with the main steps of fixation, maceration, staining and observation. Data were analyzed with the help of Image raster 3, Corel Draw X7, and Microsoft Excel 2013. P. goodyeroides from Curug Setawing has the morphological characters of root tubers, cylindrical stems, ovate leaf shape, convolutive leaf arrangement and creamy white flowers. The orchid has a number of chromosomes 2n = 10 with a karyotype formula of 2n = 2x = 8m + 2t. Metacentric chromosomes are found on chromosomes 1-8 and telocentric chromosomes 9-10. The absolute arm length of the chromosomes has a range of 2.03-3.44 μm, the relative arm length of the chromosomes is 2.21-3.32 μm, the length of the p arm is 1.13-1.58 μm and the q arm is 1.23-2.12 μm.

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Characterization of the bacterial community composition in water of drinking water production and distribution systems in Flanders, Belgium

MicrobiologyOpen ◽

10.1002/mbo3.726 ◽

2018 ◽

Vol 8 (5) ◽

pp. e00726 ◽

Cited By ~ 3

Author(s):

Ado Van Assche ◽

Sam Crauwels ◽

Joseph De Brabanter ◽

Kris A. Willems ◽

Bart Lievens

Keyword(s):

Drinking Water ◽

Bacterial Community ◽

Community Composition ◽

Distribution Systems ◽

Bacterial Community Composition ◽

Water Production ◽

Production And Distribution ◽

Drinking Water Production

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Characterization of rumen ciliate community composition in domestic sheep, deer, and cattle, feeding on varying diets, by means of PCR-DGGE and clone libraries

FEMS Microbiology Ecology ◽

10.1111/j.1574-6941.2010.01022.x ◽

2011 ◽

Vol 75 (3) ◽

pp. 468-481 ◽

Cited By ~ 75

Author(s):

Sandra Kittelmann ◽

Peter H. Janssen

Keyword(s):

Community Composition ◽

Domestic Sheep ◽

Clone Libraries ◽

Ciliate Community ◽

Cattle Feeding

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Algal community composition within territories of the damselfish Stegastes nigricans (Pomacentridae, Labroidei) in Fiji and the Cook Islands

The South Pacific Journal of Natural and Applied Sciences ◽

10.1071/sp05008 ◽

2005 ◽

Vol 23 (1) ◽

pp. 43 ◽

Cited By ~ 1

Author(s):

L W Zemke-White ◽

E L Beatson

Keyword(s):

Species Composition ◽

Community Composition ◽

Algal Species ◽

Abundant Species ◽

Red Alga ◽

Algal Community ◽

Filamentous Algae ◽

Cook Islands ◽

Algal Assemblages

The species composition of algal assemblages inside territories of the damselfish Stegastes nigricans was examined from Nananu-i-ra Island, Fiji and Rarotonga, Cook Islands. A total of 32 algal species were identified, the majority of them Rhodophytes (24 species). Seven species were unique to Rarotonga, six were unique to Fiji, with the remaining 19 species recorded at both locations. The biodiversity of territories was similar at both locations. The red alga, Herposiphonia secunda, was the most abundant species found, comprising 40.33% � 3.51SE and 33.94% � 3.58SE from Rarotonga and Fiji respectively. Gelidiopsis intricata, Polysiphonia sp., Aglaothamnion cordatum, and various Cyanophytes were also abundant at both locations. As a group, filamentous algae accounted for 70.35% of the algae found within the territories at all sites. We suggest that if S. nigricans are actively weeding their territories, they are selecting filamentous algae, and particularly Herposiphonia sp. and Polysiphonia sp.

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Bacterial community composition characterization of a lead-contaminated Microcoleus sp. consortium

Environmental Science and Pollution Research ◽

10.1007/s11356-010-0432-x ◽

2011 ◽

Vol 18 (7) ◽

pp. 1147-1159 ◽

Cited By ~ 7

Author(s):

Ludovic Giloteaux ◽

Antoni Solé ◽

Isabel Esteve ◽

Robert Duran

Keyword(s):

Bacterial Community ◽

Community Composition ◽

Bacterial Community Composition

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Effects of Liming on the Epipelic Algal Community of Woods Lake, New York

Canadian Journal of Fisheries and Aquatic Sciences ◽

10.1139/f89-039 ◽

1989 ◽

Vol 46 (2) ◽

pp. 287-294 ◽

Cited By ~ 6

Author(s):

Deborah A. Roberts ◽

Charles W. Boylen

Keyword(s):

New York ◽

Community Composition ◽

New York State ◽

Water Clarity ◽

Algal Community ◽

Depth Gradient ◽

Before And After ◽

Woods Lake ◽

Depth Zonation ◽

Zonation Patterns

The biovolume and species composition of algae on the sediment along a depth gradient were determined before and after liming of acidic (pH 4.9), oligotrophic Woods Lake in the Adirondack Park in New York State (Herkimer Co., NY, USA). The epipelic algal community was dominated by diatoms and cyanobacteria prior to and following liming. Distinct depth zonation patterns of community composition were evident and unaffected by CaCO3 addition. Treatment with calcite increased pH from 4.9 to above 9.0, caused ANC to rise from 0 to >400 μeq∙L−1, and immediately reduced overall water clarity which subsequently improved during the summer. There was a significant decrease (p <0.001) in total algal biovolume after liming corresponding to a significant reduction in biovolume of Hapalosiphon pumilus at the deepest sites. Total diatom biovolume was not significantly changed as a result of the addition of calcite; however, a shift in community composition from dominance by Navicula tenuicephala and Fragilaria acidobiontica to dominance by Achnanthes microcephala and Anomoeoneis vitrea was observed following liming.

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