Evaluation of Total Phosphorus as a Predictor of the Relative Biomass of Blue-green Algae with Emphasis on Alberta Lakes

1987 ◽  
Vol 44 (7) ◽  
pp. 1337-1342 ◽  
Author(s):  
Annette M. Trimbee ◽  
E. E. Prepas
Keyword(s):  
Green Algae ◽  
Total Phosphorus ◽  
Algal Biomass ◽  
Dynamic Equilibrium ◽  
Empirical Models ◽  
Total Biomass ◽  
New Model ◽  
Blue Green Algae ◽  
Model Based ◽  
Green Algal

The relative biomass of blue-green algae in freshwater (total dissolved solids < 500 mg∙L−1) Alberta lakes was consistently underestimated by two recent empirical models based on total nitrogen (TN), total phosphorus (TP), Secchi disc depth (SD), and depth of the mixed layer (Zm). We regrouped the data used in these empirical models to eliminate the potential biases introduced by including data from lakes not in dynamic equilibrium and generated a new model based on TP. This new model accounted for 11% more of the variation in relative blue-green algal biomass than the original model based on TN, TP, SD, and Zm and 21% more than the model based on TN to TP ratios and SD to Zm ratios. This new model was also a much better predictor of the relative biomass of blue-green algae in Alberta lakes than the original models. In addition, for lakes in Alberta, TP was a much better predictor of total blue-green algal biomass than TN or the TN to TP ratio. Our analyses suggest that for large numbers of lakes, TP may be as good or better an indicator of relative and total biomass of blue-green algae than TN or TN to TP ratios.

Factors Influencing the Abundance of Blue-Green Algae in Florida Lakes

1989 ◽  
Vol 46 (7) ◽  
pp. 1232-1237 ◽  
Author(s):  
Daniel E. Canfield Jr. ◽  
Edward Phlips ◽  
Carlos M. Duarte
Keyword(s):  
Green Algae ◽  
Algal Biomass ◽  
Strongly Correlated ◽  
Blue Green Algae ◽  
Florida Lakes ◽  
Relative Contribution ◽  
Green Algal ◽  
Factors Influencing ◽  
Total Phytoplankton ◽  
Algal Abundance

Phytoplankton samples collected from 165 Florida lakes were examined to determine relationships between blue-green algal abundance and environmental conditions. Blue-green algal biomass in the Florida samples was weakly correlated (r = −0.34) with water transparency and the concentration of total nitrogen (TN) (r = 0.47) and total phosphorus (TP) (r = 0.33). The relative contribution of blue-green algae to total phytoplankton biomass, however, did not decrease with TN/TP > 29. Blue-green algal biomass was strongly correlated (r = 0.90) to total algal biomass, and blue-green algae became consistently dominant when total algal biomass exceeded 100 mg/L.

scholarly journals PEMISAHAN ION KROM(III) DAN KROM(IV) DALAM LARUTAN DENGAN MENGGUNAKAN BIOMASSA ALGA HIJAU SPIROGYRA SUBSALSA SEBAGAI BIOSORBEN

REAKTOR ◽  
2014 ◽  
Vol 15 (1) ◽  
pp. 27
Author(s):  
M Mawardi ◽  
Edison Munaf ◽  
Soleh Kosela ◽  
Widayanti Wibowo
Keyword(s):  
Green Algae ◽  
Metal Ion ◽  
Algal Biomass ◽  
Absorption Capacity ◽  
Ion Concentration ◽  
Phosphorus Compounds ◽  
Time Interval ◽  
Algae Biomass ◽  
Isotherm Equation ◽  
Green Algal

Karakteristik pemisahan ion Cr3+ dan Cr6+ dalam larutan melalui proses biosorpsi menggunakan biomassa alga hijau Spirogyra subsalsa dengan sistem batch telah diteliti. Dalam pelaksanaannya diawali dengan melakukan analisis kualitatif gugus fungsi dalam biomassa menggunakan instrumen FTIR, kemudian dipelajari karakteristik pengaruh variabel pH awal larutan, ukuran partikel biosorben, kecepatan pengadukan, pengaruh pemanasan biosorben, laju penyerapan, pengaruh konsentrasi larutan ion logam terhadap kapasitas serapan biomassa alga. Berdasarkan spektra spektroskopi FTIR dapat disimpulkan bahwa  biomassa alga hijau S. Subsalsa mengandung gugus-gugus karboksilat, amina, amida, amino, karbonil dan hidroksil, disamping adanya senyawa silikon, belerang dan fosfor. Hasil penelitian yang diperoleh  memperlihatkan bahwa kapasitas biosorpsi sangat dipengaruhi oleh pH larutan, waktu kontak dan konsentrasi awal larutan. Biosorpsi optimum kation Cr3+ terjadi pada pH 4,0 sedangkan ion Cr6+ terjadi pada pH 2,0 kemudian berkurang dejalan dengan naiknya pH larutan. Perhitungan dengan persamaan Isoterm Langmuir diperoleh data kapasitas serapan maksimum biomassa alga S. subsalsa untuk masing-masing ion Cr3+ dan Cr6+ adalah 1,82 mg (0,035 mmol) dan 1,51 mg (0,029 mmol) per gram biomassa kering. Kinetika biosorpsi berlangsung relatif cepat, dimana selama selang waktu 30 menit, masing-masing ion terserap sekitar 95,7%; dan 86,5%. Daya serap biomassa juga dipengaruhi kecepatan pengadukan, sedangkan faktor ukuran partikel dan pemanasan biosorben kurang mempengaruhi daya serap biomassa. Key Word : biosorpsi, spirogyra subsalsa, krom(III), krom(VI), sistem batchAbstract Separation of Ion Chromium(III) and Chromium(IV) In Solution Using Green Algae Biomass Spirogyra subsalsa as Biosorbent. The characteristics of Cr3+andCr6+ ion separation in solution through biosorption process using green algal biomass Spirogyrasubsalsa with batch systems have been investigated. The study began with aqualitative analysis of functional groups in biomass using FTIR instrument, then followed by a study of the characteristics of influences by several variables, such as: the initial pH of the solution,the size of biosorben particles, stirring speed, the effect of heating the biosorben, the rate of absorption, and the effect of metal ion concentration in solution on the absorption capacity of algal biomass. Based on FTIR spectroscopy spectra gave a conclusion that biomass of green algae S.subsalsa contains carboxylate groups, amine, amide, amino, carbonyl and hydroxyl, in addition to silicon, sulfur, and phosphorus compounds. The results showed that the biosorption capacity was strongly influenced by pH, contact time, and initial concentration ofthe solution. The optimum biosorption of Cr3+cation occurred at pH 4.0 while that of Cr6+ions occurred at pH 2.0 and then decreased with the increasing pH of solution. The calculation of Langmuir isotherm equation showed that the maximum absorption capacity of algal biomass S.subsalsa for Cr3+and Cr6+ ion respectively was 1.82mg (0.035 mmol) and 1.51 mg (0.029 mmol) pergram of dry biomass. The kinetics of biosorption took place relatively quick, in which during the 30minutes time interval, each ion was absorbed approximately 95.7%; and 86.5%. The absorptive capacity of biomass was also influenced by stirring speed, while the size of particles and heating biosorben gave lessinfluence to the absorption of biomass.

scholarly journals PHARMACEUTICAL POTENTIAL OF LABORATORY GROWN CULTURES OF BLUE-GREEN ALGAE: A COMPREHENSIVE REVIEW AND FUTURE POSSIBILITIES

2021 ◽  
Vol 9 (5) ◽  
pp. 543-571
Author(s):  
Ritu Chauhan ◽  
◽  
Abhishek Chauhan ◽  
Ashutosh Tripathi ◽  
Anuj Ranjan ◽  
...  
Keyword(s):  
Green Algae ◽  
Bioactive Compounds ◽  
Current Knowledge ◽  
Biological Activities ◽  
Biologically Active ◽  
Primary And Secondary Metabolites ◽  
Blue Green Algae ◽  
Green Algal ◽  
Algal Group ◽  
Diverse Application

COVID-19 pandemic has taught the world researchers the urgent need for new sources and novel pharmaceuticals not only for existing diseases but also for both seasonal epidemics and future pandemics. Pharmaceutical drug discoveries for the past fifty years depended deeply on the procedure of empirical transmission of a huge number of pure bioactive compounds to provide new leads. The screening of extracts or isolating compounds is a common way to discover novel biologically active molecules. Most of the valuable Blue-Green algal metabolites are concentrated in their biomass. For existence in nature, Blue-Green algae (BGA) secrete and contain various organic substances like proteins, fatty acids, vitamins, pigments, primary and secondary metabolites, and these compounds are explored for potential biological activities such as antibacterial, antifungal, antiviral (including the anti-SARS-CoV-2 virus that causes COVID-19), anticancer, antioxidant, antidiabetic, protease inhibitory activity, anti-inflammatory activity, etc. Due to their diverse application, pharmaceutical companies have shown commercial interest in the Blue-green algal group for the discovery and development of novel molecules to combat deadly diseases for the benefit of society and mankind. The current review paper highlights and discusses the diverse pharmaceutical potential of laboratory-grown cultures of BGA along with comprehensive and current knowledge on bioactive compounds discovered by researchers globally.

Volatile Compounds of the Cyanophyceae – A Review

1983 ◽  
Vol 15 (6-7) ◽  
pp. 181-190 ◽  
Author(s):  
George P Slater ◽  
Vivian C Blok
Keyword(s):  
Fatty Acids ◽  
Volatile Compounds ◽  
Organic Compounds ◽  
Green Algae ◽  
Aquatic Organisms ◽  
Blue Green Algae ◽  
Green Algal

A relationship between blue-green algae and off-flavours in water was reported as early as 1883. Continuing research has shown that two metabolites, geosmin and methylisoborneol are major contributors to unpalatable flavours in water and aquatic organisms. Many instances of the co-occurrence of these two compounds and dense blooms of blue-green algae have been recorded. Cultures of Anabaena, Lyngbya, Osciiiatoria, and Sympioca species have been shown to produce geosmin or methylisoborneol while blooms of Aphanizomenon, Anabaena, Microcystis, Oscillatoria, and Gomphosphaeria have been found in water containing geosmin or the odour of this compound. Actinomycetes have also been shown to produce these two compounds. In addition to geosmin and methylisoborneol, there is evidence that several other blue-green algal metabolites contribute to aquatic taste and odour problems. Among them is β-cyclocitral which has a distinctive tobacco flavour. Blue-green algae produce a variety of organic compounds including hydrocarbons, fatty acids, aromatics, ketones, terpenoids, amines and Sulfides which could contribute to the over-all flavour of water and aquatic organisms.

Enhancement of Autotrophic Production by Nutrient Addition in a Coastal Rainforest Stream on Vancouver Island

1978 ◽  
Vol 35 (1) ◽  
pp. 28-34 ◽  
Author(s):  
John G. Stockner ◽  
K. R. S. Shortreed
Keyword(s):  
Algal Biomass ◽  
Algal Growth ◽  
N:P Ratio ◽  
Visual Observation ◽  
Nutrient Addition ◽  
Appreciable Effect ◽  
Blue Green Algae ◽  
Species Succession ◽  
Green Algal ◽  
Enrichment Experiments

In 1976 streamside nutrient-enrichment experiments were conducted using wooden troughs. Tripling of the PO4-P concentration, with or without a similar increase of NO3-N, increased algal biomass on the troughs by 8 times after 35 days. Increasing NO3-N alone had no appreciable effect on algal growth. A sloughing of algal biomass in August 1976 is believed to have been due to the instability of the heavy algal mat on the troughs and to the very poor light conditions that prevailed throughout August. Visual observation indicated that the relatively heavy algal population in Carnation Creek rapidly declined concurrent with the decline in the troughs. The percentage of diatoms in the algal assemblage remained the same in all troughs, and Fragilaria vaucheriae replaced Achnanthes minutissima as dominant on the phosphorus enriched trough. No shift to green or blue-green algal dominated assemblages occurred despite alteration of the N:P ratio. The dynamics of species succession, distribution, and growth, with and without nutrient addition, are discussed. Key words: stream fertilization, autotrophic production, algal succession, N:P ratio, algal distribution, rainforest, algal biomass, diatoms, blue-green algae

Blue-green Algal Ammonia Uptake in Hypertrophic Prairie Lakes

1981 ◽  
Vol 38 (9) ◽  
pp. 1040-1044 ◽  
Author(s):  
T. P. Murphy ◽  
B. G. Brownlee
Keyword(s):  
Microcystis Aeruginosa ◽  
Green Algae ◽  
Nitrogen Cycle ◽  
Nitrogen Limitation ◽  
Kinetic Studies ◽  
Blue Green Algae ◽  
Ammonia Uptake ◽  
Green Algal ◽  
Prairie Lakes ◽  
Menten Kinetic

Within 24 h of an increase in lake [Formula: see text] concentration, [Formula: see text] uptake by Aphanizomenon flos-aquae and Microcystis aeruginosa increases much beyond the capacity predicted by Michaelis–Menten kinetic studies. In hypertrophic lakes this response enables these blue-green algae to optimize ammonia uptake during large oscillations of [Formula: see text] concentration, to aid them in competing with other algae, and to conserve [Formula: see text] within the ecosystem. Nitrogen limitation in the hypertrophic prairie lakes is a rare event.Key words: ammonia uptake, prairie lakes, nitrogen limitation, nitrogen cycle

scholarly journals Carbamate, Organophosphate and Organochlorine Pesticidal Effect on the Qualitative Occurrence and Survivability of Blue-green Algae

2020 ◽  
Vol 26 (1) ◽  
Author(s):  
Ganesh S. Shinde
Keyword(s):  
Green Algae ◽  
Culture Media ◽  
Pesticide Application ◽  
Blue Green Algae ◽  
Crop Fields ◽  
Survival Percentage ◽  
Green Algal ◽  
Control Plate ◽  
Total Productivity ◽  
Stock Solutions

Blue-green algae make a valuable contribution to the nitrogenous soil fertility by fixing atmospheric nitrogen and are of great agricultural importance as biofertilizer. Four commercial grade pesticides, Carbamate, Furadan and Sevin and Organophosphate, Rogor and Organochlorine, Endotaf were used to study their effect on the survivability and qualitative occurrence of blue-green algae by taking survival on the control plate as 100%. Stock solutions of these pesticides were prepared freshly for experiments in the sterilized BG-11 media and added to the culture media to obtain the desired concentrations of 100, 250, 500 and 1000 ppm. After 30 days of incubation, the blue-green algal forms appeared in the culture flask were identified using standard monographs. The pragmatic results indicated that, soil blue-green algae show variable resistance to pesticide treatments. The survival percentage of the tested blue-green algae was reduced upto 50 percent at 500 ppm of carbamate pesticides, Furadan and Sevin. While with Rogor only 10.52% and Endotaf 5.26% survivability was noticed at 500 ppm dose level. Furthermore, the organochlorine pesticide Endotaf was more toxic than the organophosphate, Rogor and the carbamates, Sevin and Furadan in sequence to the blue-green algae. It was cocluded that higher doses of pesticide application in the crop fields i.e. more than 100 ppm of Furadan, Sevin and Rogor and even at 100 ppm of Endotaf, qualitative and quantitative occurrence of heterocystous and non- heterocystous blue-green algae was decreased considerably. This suggests that, indiscriminate use of these pesticides may cause adverse effects on the nitrogen fixing blue-green algae of various crop fields, which has a direct influence on total productivity. In general, the sensitiveness of different blue-green algae to pesticide application was found to be more in sheathless heterocystous and unicellular forms than the heterocystous ensheathed and non- heterocystous ensheathed forms.

scholarly journals Chroococcalean blue green algae from the paddy fields of Satara District, Maharashtra, India

2020 ◽  
Vol 12 (14) ◽  
pp. 16979-16992
Author(s):  
Sharada Jagannath Ghadage ◽  
Vaneeta Chandrashekhar Karande
Keyword(s):  
Green Algae ◽  
Polar Region ◽  
Species Abundance ◽  
Algal Growth ◽  
Wide Distribution ◽  
Paddy Fields ◽  
Study Region ◽  
Blue Green Algae ◽  
Green Algal ◽  
The Family

Blue green algae are the photosynthetic prokaryotes representing a wide distribution in habitat, i.e., temperate, tropical, and polar region.  Paddy fields are the best studied aquatic ecosystems on earth which fulfill all the necessary demands required for blue green algal growth.  Blue green algal role in enhancement of paddy yield has been studied worldwide.  Sustainable utilization of an organism for community use depends on how successfully the ecology of that organism is understood.  Twenty-eight chroococcalean blue green algal taxa were recorded from the study area.  They were taxonomically investigated and found to belong to two families and 11 genera.   The first family Chroococcaceae was the largest family with 10 genera and 26 species while the second family Entophysalidaceae had only one genus and two species.  The genus Gloeocapsa from the family Chroococcaceae exhibited largest species diversity (21.42%), as well as taxa Chlorogloea fritschii of family Entophysalidaceae showed species abundance from the study area.  All heterocystous blue green algal forms are capable of fixation of atmospheric N2.  Many of the non-heterocystous or unicellular blue green algae also have the capacity of N2 fixation.  The taxonomical documentation of chroococcalean blue green algae provide information about such indigenous unicellular blue green algae which will help in the development of niche specific inoculants as biofertilizers for rice fields of the study region.  

Differential temperature sensitivity of two cladoceran species to resource variation during a blue-green algal bloom

1986 ◽  
Vol 64 (8) ◽  
pp. 1739-1744 ◽  
Author(s):  
Stephen T. Threlkeld
Keyword(s):  
Growth Rate ◽  
Population Growth ◽  
Green Algae ◽  
Growth Rates ◽  
Algal Bloom ◽  
Zooplankton Community Structure ◽  
Lake Texoma ◽  
Blue Green Algae ◽  
Green Algal ◽  
First Reproduction

The sensitivity of life-table parameters of two cladoceran zooplankton to slight, natural variations in temperature was determined during the onset of a midsummer blue-green algal bloom in a large turbid reservoir (Lake Texoma, Oklahoma, Texas). Prior to the onset of blue-green algae, cohorts of Ceriodaphnia lacustris incubated at ambient epilimnion temperatures (27–30 °C) had higher individual somatic and population growth rates, an earlier age at first reproduction, and shorter life-spans than cohorts incubated at a constant 25 °C. As blue-green algae became abundant, Ceriodaphnia growth rates were reduced more dramatically at ambient temperatures than at 25 °C, suggesting that a temperature–resource interaction was important to determination of somatic growth rate, age of first reproduction, and population growth rate. Ceriodaphnia populations declined in Lake Texoma as blue-green algae became abundant. Diaphanosoma leuchtenbergianum, which was abundant throughout the period of blue-green algal dominance, did not show the temperature–resource interaction found for Ceriodaphnia. Temperature–resource interactions have been hypothesized to determine seasonal change in zooplankton community structure; this study provides experimental evidence of demographic consequences in natural populations of one kind of common temperature–resource interaction.

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