Hydrobiological studies within the tea gardens at Srimangal, Bangladesh. IV. Desmids (17 genera)

Abstract

Fifty nine taxa of desmids under 17 genera, namely Cylindrocystis, Netrium, Spirotaenia, Gonatozygon, Penium, Closterium, Pleurotaenium, Triploceras, Triplastrum, Hyalotheca, Groenbladia, Bambusina, Teilingia, Sphaerozosma, Spondylosium, Onychonema and Desmidium have been recorded from different aquatic habitats located within the tea gardens at Srimangal, Maulvi Bazar. Eight taxa are described as new records for Bangladesh including two genera, namely, Cylindrocystis and Spirotaenia.

Hydrobiological studies within the tea gardens at Srimangal, Bangladesh. II. Algal flora (excluding Chlorophyceae)

“…For the description of the study area and meteorological information see Islam and Irfanullah (2000a). The pH of Baraoora Lake ranged from 5.5 to 6.8, nearby ditches 5.8-6.6, and the Burburia River 6.0-7.2.…”

“…Recently, Islam and Irfanullah (2000a) have described the vascular hydrophytes of Baraoora Lake and the Burburia River located within the tea gardens at Srimangal Upazilla (latitude 24°18′N and longitude 91°44′E), Maulvi Bazar District. The present paper is the second one in a series in continuation of the above work under the same title.…”

Hydrobiological studies within the tea gardens at Srimangal, Bangladesh. VI. Desmids (<i>Xanthidium</i>, <i>Arthrodesmus</i>, <i>Staurodesmus</i> and <i>Staurastrum</i>)

“…The studied water bodies (described in Islam and Irfanullah 2000), namely, Baraoora Lake, the Burburia River, ditches and paddy fields were mainly acidic (Islam and Irfanullah 2005a). A total of 120 algal samples were collected in different seasons of 1996and 1997: winter (9 January 1996and 6 January 1997), spring (18 March 1997, rainy season (20 July 1997) and autumn (20 October 1997).…”

“…In a series of hydrobiological papers, Islam and Irfanullah have recently described the aquatic macrophytes (Islam and Irfanullah 2000) and the major proportion of the algal flora Irfanullah 2005a, b, c, 2006) of some selected habitats within the tea gardens at Srimangal, Maulvi Bazar District. The present paper is the concluding instalment of this series dealing with four desmid genera, namely, Xanthidium, Arthrodesmus, Staurodesmus and Staurastrum, from these aquatic habitats.…”

Hydrobiological studies within the tea gardens at Srimangal, Bangladesh. V. Desmids (<i>Euastrum</i>, <i>micrasterias</i>, <i>actinotaenium</i> and <i>cosmarium</i>)

“…The aquatic macrophytes (Islam and Irfanullah, 2000) and a significant proportion of the algal flora (Islam and Irfanullah, 2005 a, b, c) of some selected habitats within the tea gardens at Srimangal, Maulvi Bazar, have recently been described in a series of hydrobiological papers. The present paper is the penultimate instalment of this series dealing with four desmid genera from these habitats.…”