—The diatom flora of selected sites in the Animas River Watershed, San Juan County, Colorado, was studied. Eighty diatom taxa were identified from 10 sites: 8 sites on the Animas River and 1 site each on the Cement and Cascade tributaries. The sample diatom abundance was dominated by Achnanthidium minutissimum, Encyonema silesiacum, Aulacoseira distans, Hannaea arcus, and Diatoma mesodon. The p...

The present study is a preliminary taxonomic surveyof diatom assemblages from one of the highest mountain ranges in Western Himalayas – Ladakh. 37 samples were collected 19 different sampling sites at altitudes ranging 3100–4552 amsl. communities representative habitats such as lakes, streams, and hot springs high altitudes. dominant diatoms are studied using light microscopy identified valve m...

Benthic diatoms have gained prominence as environmental bioindicators since the beginning of twentieth century. Epilithic diatom taxa are frequently used for ecological water-quality assessments rivers. Diversity these dominant group protists in benthic communities can be indicative changes freshwater ecosystem. The aim this study was to analyze diversity and ecology Spreča River on locations a...

The present study conducted to epipelic diatoms in the Tigris River within Wasit province for one year from June 2015 May 2016, five sites have been chosen along river between Al-Aziziyah and Kut .The aim of was identify main distributed them data were collected by qualitative quantitative diatoms. A total number 161 species recorded belongs 36 genera, where central 14 belonged 7 genera (8.69%)...

The biological interactions and the physical and chemical properties of the littoral zone of Lake Krugersdrift were studied for a 4-month period when a dense, toxic cyanobacterial bloom dominated by Microcystis aeruginosa was present in the main lake basin. The presence of a toxic strain of M. aeruginosa was confirmed through the use of ELISA and molecular markers that detect the presence of th...

We examined diatom assemblages from 18 stream and pond samples in the Franz Josef Land Archipelago (FJL), the most northern land of Eurasia. More than 216 taxa were observed, revealing a rich circumpolar diatom flora, including many undescribed taxa. Widely distributed taxa were the most abundant by cell densities, while circumpolar taxa were the most species rich. Stream and pond habitats host...

Lokop is one of the villages in East Aceh which has a watershed Leuser Ecosystem. Human activities have potential to disrupt Trophic Status River, such as use pesticides for agriculture, household waste and potassium fishing. It necessary research quality waters River. The plankton community present river can be an indicator environmental pollution by analyzing saprobic index. This study aims d...