scholarly journals Effects of Disinfectants to Biomass and Species Composition of Periphytic Algal Communities formed in Glass Tubes.

1998 ◽  
Vol 34 (4) ◽  
pp. 279-289
Author(s):  
SACHIKO ABE ◽  
RYUICHI SUDO
Keyword(s):  
Species Composition ◽  
Algal Communities ◽  
Glass Tubes

scholarly journals Diversity and Species Composition of Subaerial Algal Communities in Forested Areas of Meghalaya, India

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Diana Kharkongor ◽  
Papiya Ramanujam
Keyword(s):  
Relative Humidity ◽  
Species Composition ◽  
Algal Species ◽  
Sacred Grove ◽  
Algal Communities ◽  
Tree Barks ◽  
Significant Difference ◽  
Forested Areas ◽  
Mixed Plantation ◽  
Disturbed Forest

The study deals with a comparative study on diversity and species composition of subaerial algal communities from tree barks of closed undisturbed sacred grove, mixed plantation, and open disturbed forest. A total of 85 taxa had been recorded, 30 cyanobacteria and 55 algal species belonging to six classes of algae. Sacred grove harboured the highest subaerial algal diversity compared to those of plantation and open disturbed forest. There was a strong significant difference in species composition among the three different sampling areas. High number of diatoms with 14 species was recorded in sacred grove. Cyanobacteria with 22 species were the frequent group in disturbed forest whereas Trentepohliales dominated in plantation. Canonical correspondence analysis confirmed that high photon irradiance favored the growth of cyanobacteria in disturbed forest. The abundance of Trentepohliales members correlated to high rainfall and photon irradiance. High diversity and presence of many diatom species in undisturbed Mawphlang sacred grove were associated with low photon irradiance and high relative humidity and could also be due to a presence of suitable substrata formed by the growth of mosses. Sunlight, relative humidity, and rainfall were the important factors which played a major role in determining the diversity and distribution of subaerial algal communities.

scholarly journals Investigation of Species Biodiversity of Ship Hull Algal Communities Using Genetic Markers and Effect of Difference in Antifouling Paints on Algal Species Composition

2010 ◽  
Vol 45 (3) ◽  
pp. 374-378
Author(s):  
Hiroshi Kawai ◽  
Takeaki Hanyuda ◽  
Hideo Okamura ◽  
Masanobu Kawachi ◽  
Masayuki Kunugi ◽  
...  
Keyword(s):  
Species Composition ◽  
Genetic Markers ◽  
Algal Species ◽  
Ship Hull ◽  
Antifouling Paints ◽  
Algal Communities ◽  
Species Biodiversity

Diversity of subaerial algae and cyanobacteria on tree bark in tropical mountain habitats

Biologia ◽  
2008 ◽  
Vol 63 (6) ◽  
Author(s):  
Jiří Neustupa ◽  
Pavel Škaloud
Keyword(s):  
Species Composition ◽  
Green Algae ◽  
Tree Bark ◽  
Primary Forest ◽  
Open Spaces ◽  
Algal Communities ◽  
Tropical Mountain ◽  
Subaerial Algae ◽  
Mountain Habitats ◽  
Closed Forest

AbstractWe report the species composition of subaerial epixylic algae and cyanobacteria from a South-East Asian mountain rainforest locality in Cibodas, West Java. Green algae (Trebouxiophyceae, Chlorophyceae, Trentepohliales) were dominant and Cyanobacteria were the second most frequent group. We specifically concentrated on the comparison of species composition of closed primary forest and open antropogenic spaces. Trentepohliales and Cyanobacteria dominated in open spaces with higher light intensities, whereas closed forest localities were dominated by trebouxiophycean coccal green algae. There was a significantly higher algal diversity in open spaces than in closed forest samples indicating the limiting effect of light on subaerial algal communities of closed tropical forests. A number of isolated strains and morphotypes probably represent undescribed taxa.

scholarly journals Observations on aerophytic cyanobacteria and algae from ten caves in the Ojców National Park

2013 ◽  
Vol 66 (1) ◽  
pp. 39-52 ◽  
Author(s):  
Joanna Czerwik-Marcinkowska
Keyword(s):  
Species Composition ◽  
Vertical Distribution ◽  
Chlorella Vulgaris ◽  
National Park ◽  
Nostoc Commune ◽  
Algal Communities ◽  
Microclimatic Conditions ◽  
Species Composition And Distribution ◽  
Cyanobacteria And Algae ◽  
Klebsormidium Flaccidum

This study, carried out in 2010–11, focuses on species composition and distribution of cyanobacterial and algal communities colonizing ten caves (Biała, Ciemna, Koziarnia, Krakowska, Łokietka, Okopy Wielka Dolna, Sąspowska, Sypialnia, Zbójecka and Złodziejska Caves) in the Ojców National Park (South Poland). A total of 85 taxa were identified, 35 of them belonging to cyanobacteria, 30 chlorophytes, and 20 belonging to other groups of algae. Aerophytic cyanobacteria dominated in these calcareous habitats. Nine species, <em>Gloeocapsa alpina, Nostoc commune, Chlorella vulgaris, Dilabifilum arthopyreniae, Klebsormidium flaccidum, Muriella decolor, Neocystis subglobosa, </em>and <em>Orthoseira roseana</em>, were the most abundant taxa in all the caves. The investigated microhabitats offer relatively stable microclimatic conditions and are likely to be responsible for the observed vertical distribution of aerophytic cyanobacteria and algae.

Attached and planktonic algal communities in some inshore areas of Great Bear Lake

1980 ◽  
Vol 58 (21) ◽  
pp. 2294-2308 ◽  
Author(s):  
James W. Moore
Keyword(s):  
Species Composition ◽  
Standing Crop ◽  
Sampling Site ◽  
Fresh Weight ◽  
Algal Communities ◽  
Important Species ◽  
Planktonic Algae ◽  
Bear Lake ◽  
Ankistrodesmus Falcatus ◽  
Synedra Acus

The species composition and standing crop of epilithic, epipelic, and planktonic algae were determined in three widely separated inshore areas of Great Bear Lake during the summers of 1976, 1977, and 1978. The most frequently encountered diatoms in the epilithon were Tabellaria ftocculosa and Achnanthes minutissima regardless of location, whereas the predominant chlorophyte was Ulothrix zonata. These species were generally rare in the epipelon and were replaced in importance by Gyrosigma spenceri, Nitzschia obtusa, Cocconeis placentula, Amphora ovalis, and Achnanthes lanceolata, depending on sampling site. The densities of the epilithon and epipelon were low in June but increased gradually during the summer, reaching maxima of 78 × 107 and 120 × 107 μm3 cm−2, respectively (19.5 × 105 and 40 × 105 cells cm−2), in either August or September. These values are among the lowest recorded for fresh waters and are probably due to continually low water temperatures and wave action rather than nutrient limitation. The most important species in the plankton in all three sampling areas were Dinobryon bavaricum, Dinobryon sociale, Rhodomonas minuta, Cyclotella species, Synedra acus var. radians, and Ankistrodesmus falcatus. Plankton standing crops of up to 62 mg fresh weight m−3 were recorded in June at a temperature of 0 °C, and they increased to 70–91 mg m−3 (23.3 × 107−30.1 × 107 cells m−3) by September. These values are again among the lowest on record, a reflection of low water temperatures. The similarity in the species composition and standing crop of the plankton, epilithon, and epipelon in all collection areas was due to the similarity in water chemistry and temperature throughout Great Bear Lake.

Comparison of algae in the euplankton, tychoplankton, and periphyton of a tundra pond

1978 ◽  
Vol 56 (12) ◽  
pp. 1472-1483 ◽  
Author(s):  
Robert G. Sheath ◽  
Johan A. Hellebust
Keyword(s):  
Species Composition ◽  
Primary Productivity ◽  
The Other ◽  
Algal Flora ◽  
Algal Communities ◽  
Unique Species

The algal flora of a small tundra pond near Tuktoyaktuk, N.W.T., was examined during the ice-free period in 1974. A total of 166 species were identified from three communities, the euplankton, the tychoplankton, and the periphyton. The taxa containing the highest proportion of species were the Chlorophyceae, Cyanophyceae, Bacillariophyceae, and Chrysophyceae, in that order. There were a number of differences in species composition between the algal communities of the pond. There were 36 unique species in the euplankton, 10 in the tychoplankton, and 15 in the periphyton. The species found exclusively in the euplankton were fairly evenly distributed in the various taxa, whereas a large proportion of the unique species in the tychoplankton were desmids. The species found only in the periphyton were largely diatoms. However, 66 species were present in all three communities. Each community exhibited two biomass increases, the timing of which was slightly different for each association. The major contributors to the biomass of the euplankton were nanoplanktonic flagellates of the Chrysophyceae, whereas the periphyton was dominated by large, colonial, filamentous or desmid members of the Chlorophyceae. The tychoplankton dominants were intermediate between the other two communities. The primary productivity of the euplankton was slightly greater than that of the tychoplankton during the July maximum, while the tychoplankton had a five-fold greater productivity in late August.

Plasma Thromboplastin Component (Christmas Factor, Factor IX) Levels in Stored Human Blood and Plasma

1960 ◽  
Vol 04 (03) ◽  
pp. 376-388 ◽  
Author(s):  
J Dieter Geratz ◽  
John B. Graham
Keyword(s):  
Human Plasma ◽  
Human Blood ◽  
Whole Blood ◽  
Room Temperature ◽  
Close Agreement ◽  
Factor Ix ◽  
Deficient Patient ◽  
Glass Tubes ◽  
Disodium Hydrogen Citrate ◽  
Bank Blood

Summary1. PTC activity was assayed in 26 units of human plasma prepared from whole blood stored for 3 weeks at 4° C. The plasma had been frozen and stored at — 20° C for additional periods ranging from a few days to 4 months. High PTC activity was still present in the plasma at the end of this period, the activity averaging 95% of normal.2. The PTC activity of 19 samples of “reclaimed“ plasma stored for an additional 6 months at — 20° C decreased by an average of 23%. This decrease was statistically significant.3. Liquid plasma kept at room temperature for 5½—7½ months contained no PTC activity.4. Lyophilized plasma stored at room temperature for 6—8 years contained an average of 30% PTC activity. Lyophilized plasma stored at — 20° C for 4 years contained 68% PTC activity.5. ACD and disodium hydrogen citrate anticoagulant solutions served equally well in preserving PTC activity in whole blood stored in glass tubes over a period of 3 weeks at 4° C.6. “Reclaimed“ plasma from outdated bank blood provided effective hemostasis in two operations for the removal of 20 teeth from a severely PTC-deficient patient.7. The high PTC activity of “reclaimed“ plasma was confirmed by the close agreement between the PTC level expected in a PTC deficient patient after transfusion of such plasma and that observed.

Changes Occurring During Coagulation in Glass. I. Normal Human Blood

1960 ◽  
Vol 4 (01) ◽  
pp. 001-016
Author(s):  
Jessica H. Lewis ◽  
Paul Didisheim ◽  
John H. Ferguson ◽  
Kenichi Hattori
Keyword(s):  
Coagulation Factors ◽  
Factor Ix ◽  
Factor Vii ◽  
Sodium Oxalate ◽  
Factor V ◽  
Rapid Rise ◽  
Rapid Fall ◽  
Glass Tubes ◽  
Normal Human ◽  
The Individual

SummaryNormal whole blood was allowed to stand in glass tubes at 37° C, and the clotting process stopped at various intervals by the addition of sodium oxalate. During the first 15 minutes a marked acceleration of clotting activity was found. Study of the individual coagulation factors showed the following changes: a sustained and rapid fall in platelet count, a sustained and rapid rise in PTC (factor IX), a steady fall in fibrinogen, a more gradual fall in AHF (factor VIII), a rapid rise and subsequent fall in proaccelerin (factor V) activity, a somewhat lesser and slower rise and fall in proconvertin (factor VII) activity, and a slow fall in prothrombin concentration. No changes were noted in Hageman factor or PTA activities.

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