Limnological studies were under taken to understand the correlation between physicochemical parameters and phytoplanktons of the Tighra reservoir, Gwalior, Madhya Pradesh from November 2010 to October 2011.In the present investigation, water temperature ranged from 18.4 C to 35.75 C, transparency ranged from 152.75 cm to 211.5 cm, conductivity from 272.5 μS/cm to 408.5 μS/cm, turbidity from 5.7...

ABSTRACT The study on the Physico-Chemical characteristics and Phytoplanktons of Lake Gbedikere was carried out between June and December, 2008. The study showed notable seasonal variation in the component investigated. Temperature seemed a major determinant of the composition, abundance and seasonal variation of encountered lake biota. During the study four (4) taxa of Phytoplankton existed in...

Seasonal variability of phytoplankton in two lentic habitats of the Chalakkudy river basin viz. Parambikulam and Peringalkuthu reservoirs were studied during 20092011. Qualitative and quantitative analysis of phytoplankton were analysed using standard methods. A total of 102 species of phytoplanktons were recorded from the lentic habitats of the study area during the study period. A higher abun...

Bioassay-guided fractionation of an ethanol extract of the brown alga, Dictyota dichotoma, led to the isolation of a novel chlorine-containing perhydroazulene diterpene together with two known diterpenes, dictyolactone and sanadaol. The structure of the novel compound, named dictyol J, was elucidated on the basis of spectroscopic information. Dictyolactone showed the highest algicidal activity ...

BACKGROUND AND OBJECTIVES Phytoplanktons are organisms with a very high diversities and global distribution in different habitats. The high distribution of phytoplankton is due to ecological flexibility and their ability to tolerate different climatic conditions and environmental stress. Phytoplankton is the most sensitive biological indicators of water resources. The purpose of this study was ...

The present study was to understand the diversity and distribution pattern of microalgae in fresh water system represented by an open artificial pond. A total 100 species phytoplanktons were indentified from different groups Chandrasarovar pond Jhalawar, Rajasthan. Among identified phytoplankton Cyanophyceae (39%) formed dominant group, followed Chlorophyceae (34%) Bacillariophyceae (23%) Eugle...

The hepatotoxin cylindrospermopsin (CYN) produced by certain cyanobacteria, including Aphanizomenon ovalisporum (hereafter Aphanizomenon) [1], seriously affects lake water quality [2], but its biological role is not known. Strong correlation between Aphanizomenon abundance in Lake Kinneret, Israel, and alkaline phosphatase (APase) activity suggests that inorganic phosphate (Pi) limitation induc...

After in situ incubation at the site for a year, phytoplanktons in surface water were exposed to natural light in temperate lakes (every month); thereafter, the net production rate of photoprotective compounds (mycosporine-like amino acids, MAAs) was calculated using (13)C labeled tracer. This is the first report describing seasonal variation in the net production rate of individual MAAs in tem...