Budidaya udang merupakan salah satu kegiatan budidaya yang mampu meningkatkan perekonomian masyarakat pesisir. Akan tetapi, juga dapat memberikan dampak negatif terhadap lingkungan. Kondisi plankton pada lingkungan digunakan sebagai parameter tingkat pencemaran Pada penelitian ini, dilakukan monitoring jenis plankton, struktur komunitas dan indek saprobitas di tiga kawasan vannamei Kecamatan Po...

A microalgafrom Chlorarachniaceae was found in the shallow runoffs of south Tehran. Morphological and intracellular structures were studied which in accordance with the identification key (Hirakawa et al. 2011), it is found to be a new species for Iran called Amorphochlora amoebiformis (Ishida & Y. Hara) Ishida, Yabuki & S. Ota. This algahas been derived and ...

Seaweeds are an underutilised nutritional resource that could not only compliment the current western diet but potentially bring additional health benefits over and above their nutritional value. There are four groups of seaweed algae; green algae (Chlorophyceae), red algae (Rhodophycae), blue-green algae (Cyanophyceae) and brown algae (Phaeophyceae). Seaweeds are rich in bioactive components i...

Seasonal variation of the plankton populations with some water quality parameters of Borobila beel, Rangpur district was carried out during July 2003 to June 2004. Total plankton ranged from 98.3×104 to 35.0×105 cells/l with mean values of 19.67±9.77×105 cells/l. A total of 51 genera of planktons were recorded belonging to Chlorophyceae, Bacillariophyceae, Cyanophyceae, Euglenophyceae, Dinophyc...

Spirulina platensis, is a photosynthetic, filamentous, spiral-shaped, multicellular and bluegreen micro alga. As it contains chlorophyll a, like higher plants, botanists classify it as a micro alga belonging to Cyanophyceae class; but according to bacteriologists it is a bacterium due to its prokaryotic structure. Mexicans (Aztecs) started using this microorganism as human food. Its chemical co...

Physico-chemical variables in the marine environment are subjected to wide spatio-temporal variations. The various physico-chemical parameters viz: temperature, salinity, pH, dissolved oxygen and nutrients of the environment are the factors which mainly influence the production and successful propagation of planktonic life in the coastal biotopes. The ranges of values of surface water temperatu...

We followed seasonal changes in abundance of bacteria, heterotrophic nanoflagellates (HNF), ciliates and crustaceans, and consumption of bacteria by the protozoans, to investigate trophic interactions among these organisms in a hypereutrophic pond from March to October 1997. Densities of HNF and ciliates were high and attained a maximum of 1 .4 X 105 and 3500 cells ml-l, respectively. However, ...

The effects of nonylphenol (NP) on phytoplankton and periphyton were studied in 230 L outdoor microcosms. Phytoplankton cell density and biomass, phytoplankton and periphyton diversity, and assemblage composition were analyzed during a four-week preapplication period, followed by six weeks of NP treatment via controlled release and a six weeks postapplication period. Changes in species richness...

Los problemas de la calidad del agua y el taponamiento filtros proceso potabilización, es atribuido al crecimiento microorganismos nocivos cierto grupo algas. En septiembre 2010 en ciudad Guayaquil incremento biomasa las algas pertenecientes a los géneros Pseudoanabaena, Cylindrospermopsis Anabaena, ocasionó un deterioro estética consumo humano percibir olor sabor tierra. El presente trabajo id...

We evaluated fungal and bacterial diversity in an established moss carpet on King George Island, Antarctica, affected by ‘fairy ring’ disease using metabarcoding. A total of 127 706 taxa were assigned. Ascomycota dominated the assemblages, followed Basidiomycota, Rozellomycota, Chytridiomycota, Mortierellomycota Monoblepharomycota. The community displayed high indices diversity, richness domina...