http://localhost:80/xmlui/handle/123456789/14468 Thu, 23 Apr 2026 14:13:05 GMT 2026-04-23T14:13:05Z http://localhost:80/xmlui/handle/123456789/15782 Title: TAXONOMIC STUDY OF SOME DIATOMS FROM JAUHARABAD DISTRICT Authors: A. ZARINA; SYED TARIQ-ALI; MASUD-UL-HASAN; MUSTAFA SHAMEEL Abstract: Four species of algae, belonging to 4 different genera of pinnate diatoms (phylum Bacillariophycota Shameel) were collected from freshwater habitats in the Jauharabad District, Punjab Province of Pakistan during February and April 1995 and taxonomically investigated. This is the first report of their occurrence from this area. Fri, 22 Mar 2013 00:00:00 GMT http://localhost:80/xmlui/handle/123456789/15782 2013-03-22T00:00:00Z http://localhost:80/xmlui/handle/123456789/15781 Title: OCCURRENCE OF PADINA GYMNOSPORA (PHAEOPHYCOTA) AT THE COAST OF KARACHI Authors: ALIA ABBAS; MUSTAFA SHAMEEL Abstract: Padina gymnospora (Kützing) Sonder was collected from the coast of Karachi during January 2009. This is the first report of its occurrence at the coast of Pakistan and its first detailed study from this area regarding the taxonomy and anatomy. It showed in situ germination on its sporangial lines within the sporangial walls, which may be due to syntagmatic germination i.e., all the spores dividing and merging into one single outgrowth. Thu, 21 Mar 2013 00:00:00 GMT http://localhost:80/xmlui/handle/123456789/15781 2013-03-21T00:00:00Z http://localhost:80/xmlui/handle/123456789/15780 Title: ROCK ALGAE OF BATKHELA DISTRICT MALAKAND, PAKISTAN Authors: BARKATULLAH; FARRUKH HUSSAIN; NIAZ ALI; IMTIAZ AHMAD Abstract: The present study describes a total of 63 lithophytic algal species belonging to Cyanophyta (11 genera, 30 species), Chlorophyta (3 genera, 7 species) and Bacillariophyta (16 genera, 26 species) from rocks of Batkhela, District Malakand. The collected specimens were identified and described. This is the first ever report on rock algae from this area. Wed, 20 Mar 2013 00:00:00 GMT http://localhost:80/xmlui/handle/123456789/15780 2013-03-20T00:00:00Z http://localhost:80/xmlui/handle/123456789/15779 Title: BIOVOLUME AND BIOMASS OF COMMON DIATOM SPECIES FROM THE COASTAL WATERS OF KARACHI, PAKISTAN Authors: TAHIRA NAZ; ZAIB-UN-NISA BURHAN; SONIA MUNIR; PIRZADA JAMAL AHMED SIDDIQUI Abstract: The biovolumes of two groups of diatoms pennate and centric including thirty three common species were calculated for the estimation of carbon biomass at two stations of Manora Channel, coastal waters of Karachi, Pakistan (northern Arabian Sea). Measurements were taken during the routine cell identification by Light microscopy. Total biovolume ranged from 558µm-3 to 392500µm-3 and biomass from 1.1pgCcell-l to 3.9pgCcell-l. Total carbon biomass was higher for centric diatoms compared to pennates. Cell biovolume showed the same pattern at both stations and a positive relationship with cell carbon biomass. This is the first detailed study based on geometrical shapes of various species and their biovolume and carbon biomass calculations from northern Arabian Sea. The obtained data will help to assess the diatom community analysis and their size related contribution of carbon biomass within the study area. Tue, 19 Mar 2013 00:00:00 GMT http://localhost:80/xmlui/handle/123456789/15779 2013-03-19T00:00:00Z