A new phytotoxicity test method based on root elongation of three Lemna species (Lemna gibba, L. minor, and L. paucicostata) has been developed. Tests with aquatic plants have, typically, favored measurements on fronds (e.g. frond number, area, biomass) rather than on roots, due, in part, to issues associated with handling fragile roots and the time-consuming procedures of selecting roots with ...

terms and conditions of current drinking water quality standards, including reducing the maximum arsenic concentration from 50 μgl-1 to 10 μgl-1 and predicted stricter standards in future, reveals the necessity for development of new technologies. this study aimed to prepare and evaluate a new nanocomposite membrane using graphene oxide (go) thin layer to remove arsenic (v) from water. to fabri...

Surface concentrations of particulate organic carbon (POC) in shallow inland lakes were estimated using MODIS Aqua data. A power regression model of the direct empirical relationship between POC and the atmospherically Rayleigh-corrected MODIS product (Rrc,645Rrc,1240)/(Rrc,859-Rrc,1240) was developed (R 2 = 0.72, RMSE= 35.86 μgL, p< 0.0001, N = 47) and validated (RMSE= 44.46 μgL, N= 16) with f...

This paper reports the histopathological responses of the gill, liver and tail muscle tissues in tadpoles of the Asian Common Toad Duttaphrynus melanostictus (Schneider, 1799) exposed to chlorpyrifos a common organophosphorus pesticide. Tadpoles of Gosner stages 24-26 were continuously exposed to low, mid and high (500, 1000 and 1500 μgl –1 ) concentrations of chlorpyrifos for two weeks. Histol...

Indian flying barb (Esomus danricus) was exposed to sublethal concentrations of 636.3, 63.6 and 6.3 μgl-1 Cadmium for 28 days and intestinal histopathology was observed by light microscopy after staining with Haematoxylin-Eosine. Exposed fishes showed severe to mild superficial erosion of mucosa, dense lamina propria, chronic inflammatory cell infiltration as well as vacuolation. With the incre...

-Trichodesmium is a filamentous cyanobacteria which forms dense blooms along the west coast of India. These are high biomass blooms which are mostly surface floating. The chlorophyll a content of water crossed >100 μgl -1 during active bloom and hence was ideal for the detection by space. Besides the Arabian Sea, the Lakshadweep Sea, the Andaman Sea and the Bay of Bengal are also well known sit...