the algae of gargar river (one of branches of karoon river) which were investigated in samples collected from habitats (epilithic, epiphytic, epipelic) at eleven station between december 2004 and september 2005.this river receive types of sewage such as municipal wastewater, agriculture and aquaculture wastewater the flora consisted of 5 class and 24 genera belonging to the bacillariophycea (12...

This study focused on the effects of two pesticides, paraquat (herbicide) and deltamethrin (insecticide), which are two common molecules used intensively in Burkina Faso. Natural bacterial populations, phytoplankton cultures (one cyanobacterium, Cylindrospermopsis raciborskii, and one chlorophycea, Monoraphidium sp.), and two species of zooplankton (Diaphanosoma excisum and Moina micrura) were ...

Phytoplankton species assemblages in estuaries are connected to those in rivers and marine environments by local hydrodynamics leading to a continuous flow of taxa. This study revealed differential effects of upwelling and river flow on phytoplankton communities observed in 2011 along a salinity gradient from a river reservoir connected to the sea through a ria-marine bay system in A Coruña (NW...

A total of 400 samples were collected from different thermogenic habitats such as nests of birds, decomposing litter, soils from furnace area, cattle dung, zoo dump, industrial waste, vegetable market compost, mushroom compost, horse dung, municipal waste, chicken manure and coal mine soils of Godavari Khani (Karimnagar) and Bhoopalpally (Warangal) group of mines in Andhra Pradesh. From which 4...

An appraisal of the current ecological status Asejire Reservoir was carried out using reservoir phytoplankton composition and community structure. Monthly sampling in nine selected sites for twelve months. Data were analysed descriptive statistics, analysis variance, Shannon-Weiner Evenness indices. One hundred fifty-four taxa identified. Taxa dominance following order: Bacillariophycea>Chlorop...

The motile, unicellular green alga Heamatococcus has come into prominence in recent years as a possible candidate for mass production for its red pigment, astaxanthin. The present paper summarizes the available information on nomenclature, taxonomy, morphology, life cycle and ultra-structure, which have so far been left out of the many reviews on this interesting alga.

Periphyton from rice-fish environment of Apatani Plateau, Arunachal Pradesh, India was studied for diversity and productivity (Chlorophylla and biomass) on artificial (glass slide) and natural (rice stem) substrates. Periphyton from rice stems, especially, from cultivars locally known as ‘Amo’ were collected from a depth of 7.0-8.0 cm from surface water and 5.0 cm above from the field bottom. G...

we tested the hypothesis that light reflected from dense growths of macroalgae [i.e., a low reflectance (lr) surface] vs heavily grazed surfaces [i.e., a high reflectance (hr) surface] has no effect on the photophysiology of scleractinian corals on the shallow (3-m depth) back reef of Moorea, french polynesia. underwater light was measured using a cosine-corrected sensor that detected photosynt...