Abdul Aziz

• Professor at University of Dhaka

Peyssonnelia conchicola Piccone and Grunow, Gymnothamnion elegans (Schousboe) J. Ag. (reds) and Spatoglossum schroederi (Mertens) Kütz. (brown) seaweeds as new records are described and reported here in the second part of studies in the St. Martin’s Reef. This along with the eight seaweeds (with six new records) recorded and described in the first...

Substantial works carried out for over nearly fifty years contributed around 200 taxa under 84 genera along Bangladesh coast specially the St. Martin’s Island (SMI) when only intertidal and knee to waist deep seaweeds were collected. Sub-littoral seaweed diversity, their distribution and standing biomass along the coast of the SMI with the assistan...

Trichodesmium erythraeum Ehrenberg 1830 (Cyanobacteria) has been described and newly recorded from three km off the west coast of the St. Martin’s Island (SMI), Cox’s Bazar, Bangladesh. The Red Sea algal bloom was narrowly elliptical raft-like loose aggregates 20-40 cm long, 4-8 cm wide and 2-3 cm thick. Volume of small and large Sea sawdust were 1...

Samples were collected from Arpangasia and Kholpetua rivers within the Sundarbans in Bangladesh during February to March and December 2018. Among several forms was found a tightly prostrate brown alga occurring on moist parts of mangrove plants and clayey soil. Flattened brownish thalli tightly attached to pneumatophores and lower parts of mangrove...

Sundarbans is the largest single block of mangroves forest in the globe, stretching over both India and Bangladesh. The entire land mass is situated in the estuary of Ganges-Brahmaputra-Meghna (GBM) river systems that carry the world’s largest sediment load to the Bay of Bengal. The present article reviews the environmental characteristics and biol...

Morphology and reproduction of a coccoid subaerial green alga isolated from mahagoni tree (Swetenia mahagoni) bark were studied in controlled batch culture using light and scanning electron microscope. Vegetative cells are predominantly spheroidal to ellipsoidal, a few are spherical, 7.0-12.0 μm in diameter. Cell wall about 1.00 μm thick surrounded...

Bangia discoidea sp. nov. (Bangiaceae, Bangiales, Rhodophyceae) was growing with Polysiphonia sp. on a steel boyar in brackish water river Passur in Khulna district, Bangladesh. The red unbranched filamentous alga had a solid cylindrical body having a basal discoid attachment cell instead of typical rhizoids and is described and illustrated here as...

The Sundarbans is a deltaic mangrove forest, formed about 7000 years ago by the deposition of sediments from the foothills of the Himalayas through the Ganges river system, and is situated southwest of Bangladesh and south of West Bengal, India. However, for the last 40 years, the discharge of sediment-laden freshwater into the Bay of Bengal throug...

Not available. Bangladesh J. Plant Taxon. 22(1): 59–61, 2015 (June)

Investigation on the sublittoral seaweed flora collected from 0.5 to 10 m depth during late March and April, 2013 from six localities around the St. Martin's Island, Bangladesh has revealed the presence of 39 seaweed taxa, 12 under Rhodophyceae, 11 under Chlorophyceae and 16 under Phaeophyceae. Of these Avrainvillea amadelpha (Montagne) Gepp et Gep...

Rice plants absorb substantial amount of arsenic when grown in rice field soil containing 3.21 mg/kg arsenic and irrigated with contaminated groundwater from a shallow tube-well having 476 ± 3 μg arsenic/l at Sonargaon, Bangladesh. It is revealed that highest total arsenic accumulation occurred in roots (5.790 ± 0.337 mg/kg) followed by shoots (3.7...

Fungal colonies were found growing as patches round the year on the distempered indoor damp walls of ground floor of the Department of Botany, University of Dhaka. Fungi were isolated and identified as Cladosporium oxysporum Berk & Curt., Curvularia lunata (Wakker) Boedijn and species of Fusarium and Penicillium. Fungicides namely, bendazin 50% WP,...

Diversity, distribution and density of estuarine phytoplankton from nine sites under four Ranges of the Sundarban Mangrove Forests (SMF), Bangladesh have been studied. The phytoplankton communities represented by 36 species which belonged to Chlorophyceae (3), Euglenophyceae (2), Bacillariophyceae (30) and Xanthophyceae (1). Occurrence of taxa and...

Botanical expedition to the Sundarban Mangrove Forests in the Bangladesh part revealed the presence of 14 diatom. taxa not recorded so far from Bangladesh territory. The taxa are Amphiprora alata Kutz., Chaetoceros pendulus Karsten, Chaetoceros socialis Lauder, Cyclotella comta (Ehr.) Kutz. Thalassionema nitzschioides (Grun.) Meresch, Thalassiosira...

A botanical expedition to the Sundarban Mangrove Forests (SMF) in March, 2010 was made to study the tree diversity and their abundance as affected by salinity gradient. In six quadrats of 25m × 25m each, distributed in all four Ranges, a total of eight tree species were recorded. A maximum number of five species occurred in relatively low saline si...

In Bangladesh use of groundwater for irrigation and drinking is increasing the arsenic contamination allarmingly. (1) Studies in home and abroad confirmed that a substantial amount of this heavy metal is absorbed by plants (2-5) and it affects PO4-P absorption (2,5) thereby preventing ATP generation. (5-7) A survey of rice fields at. Sonargaon in N...

Ceramium tenerrimum (G. Martens) Okamura fa, Caulerpa sertularioides fa corymbosa Taylor and Cladophora vagabunda (L.) Hoek from St. Martin's Island, Bangladesh have been recorded, and described and illustrated for the first time with descriptions and illustrations.

Cladophora crispula Vickers, Cladophora prolifera (Roth) Kutz. and Phyllodictyon anastomosans (Harv.) Kraft et Wynne are recorded and described for the first time from the St. Martin's Island, Cox's Bazar. Bangladesh.

Falkenbergia hillebrandii (Bornet) Falkenberg, Gelidiella tenera (J. Ag.) Schmitz, Halymenia floridana J. Ag., Liagora harveyiana Zeh and Polysiphonia harveyi Bailey of Rhodophyceae have been recorded and described for the first time from the St Martin's Island, Cox's Bazar, Bangladesh.

Ceramium brevizonatum var caraibica Peter et Borg Dasva corvmbifera J Ag Dudiesnava hawanensis R K S Lee. Chrvsymenta agardhu Harv and Hynea boergesenii Tanaka ale recorded and described for the first time from the St Martin's Island. Cox's Bazar, Bangladesh

Not available. Keywords: Micrasterias torreyi Bail. var . nurulislamii Aziz var. nov.; Desmid; Green alga; Bangladesh. DOI: 10.3329/bjpt.v17i1.5399 Bangladesh J. Plant Taxon. 17(1): 109-111, 2010 (June)

Acrochaetium nurulislamii sp. nov. and Acrochaetium polysporum Howe, A. sagraeanum (Montagne) Bornet and A. zosterae Papenfuss are recorded and described for the first time from the St. Martin's Island, Cox's Bazar, Bangladesh.

Four species of the genus Kallymenia J. Ag. such as K. cribrosa Harvey, K. rosea Womersley & Norris, K. rubra Womersley & Norris K. tasmanica Harvey have been reported for the first time from St. Martin's Island, Bangladesh.

Examination of samples from Madhabkunda waterfall area at Maulvi Bazar, Bangladesh revealed the presence of Aphanocapsa montana Cramer, Oscillatoria acuiformis Skuja, Oscillatoria redeckii Van Goor, Gloeotrichia natans (Hedwig) Rabenh., Nostochopsis lobatus Wood em Geitler, Schizochlamys gelatinosa A. Br. and Kirchneriella dianae (Bohl.) Coms var....

A large number of marine red algae have so far been reported from the St. Martin's Island, Bangladesh by Islam and coworkers (Islam 1976, Islam and Aziz 1982, 1987, Aziz 1997, Aziz et al. 2002a, b, Islam et al. 2002). Among these works, Antithamnion divergens J. Ag. was reported by Islam et al. (2002). Besides, Islam (1976) provisionally placed a s...

Examination of brackish water algal samples revealed the presence of Biddulphia aurita (Lyngbye) Brebisson & Godey var. obtusa (Kützing) Hustedt, B. dubia (Brightwell) Cleve fa. and B. pulchella Gray hitherto not reported from Bangladesh. These are described and illustrated in this article.

Azolla pinnata var. pinnata, an aquatic fern grown in cemented pits were mixed with slurries in various combinations for the production of biogas in a laboratory scale. Methane concentration was about 68% in treatments with a mixture of 80% Azolla plants and 20% starter (Azolla slurry), or 90% Azolla plants (= 500 g approx.) and 10% biogas slurry a...

Six red algae e.g. Heterosiphonia gibbesii (Harvey) Falk., H. wurdemanni (Bailey ex Harvey) Falk., Wrangelia penicillata C. Ag., Antithamnion divergens J. Ag., Ceramium brevizonatum Pete. and Wrightiella tumanowiczii (Gatty) Schm. have been described and illustrated for the first time from the St. Martin's Island, Bangladesh.

Six species of Sargassum, namely S. binden Sonder, S. coriifolium J. Ag., S. crassifolium J. Ag., S. cristaefolium C. Ag., S. oligocystum Mont. and S. swartzii (Turner) C. Ag. have been described here as new records from the coasts of St. Martin's Island, Bangladesh.

Effects of pH, light, diel changes, temperature and shaking on the growth and nitrogenase activity of a local strain of Azolla pinnata var. pinnata Dh101 have been studied in the controlled laboratory conditions. It appeared that pH 5 to 6 were favourable for growth and nitrogenase activity. With decreasing light quantities the growth and nitrogena...

Effects of pH, light intensity, temperature and shaking on the growth and morphology of Spirodela polyrhiza Dh116 and S. punctata Dh122 (Lemnaceae) have been studied in the controlled laboratory conditions. pH 6.0 is most suitable for both the speices. 5. polyrhiza died at pH 4.0, while in S. punctata a very few fronds died. Both the species grew q...

Occurrence of blue-green algae in some ponds, soil surface, old walls and tree barks of three northern districts of Bangladesh have been studied. In all 11 taxa under seven genera have been recorded for the first time from Bangladesh and are illustrated in this paper.

(i) Aquatic macrophytes formed dense beds in fallow areas during the four and a half months of the flood season in all but one deepwater rice-growing location in Bangladesh; these included several types of life-form, but the fine-leaved species, Myriophyllum sp., Najas indica, Utricularia stellaris were often especially abundant. The same species g...

This introduces a series of five papers describing physical, chemical and biological features of Bangladesh deepwater rice-fields. Flooding occurs typically from late June to early November. There were two distinct flood peaks (late July, mid-September) at the two main research sites during each of the years 1981–86, with maximum depths reaching ab...

(i) Aquatic macrophytes formed dense beds in fallow areas during the four and a half months of the flood season in all but one deepwater rice-growing location in Bangladesh; these included several types of life-form, but the fine-leaved species, Myriophyllum sp., Najas indica, Utricularia stellaris were often especially abundant. The same species g...