new approach to the classification of algae

A new classification of algae up to the ordinal level, based on five kingdoms of living organisms, has been suggested in this paper, wherein algae are distributed in this paper, wherein algae are distributed in three kingdoms and include 19 phyla, 31 classes and 107 orders. Delineation of these groups is based on the micromorphological, ultrastructural and phycochemical characteristics of algae. As a result, three new phyla i.e. Volvocophyta, Porphyridiophyta and Vaucheriophyta, ten new classes i.e. Chrooco-phyceae, Porphyridiophyceae, Siphonocladophyceae, Vaucheriphyceae, Dictyophyceae, Nemaliophyceae and Ceramiophystales, Pelagomonadales, Vischeriales and Vacuolariales have been created. Typified names are preferred to descriptive names of various taxa. A comparison has also been made between various phyla regarding their diagnostic characters

Elemental composition of marine algae from the coastal areas of Karachi, Pakistan

Eighteen species of seaweeds were collected from the coastal area of Karachi [Pakistan] and analyzed for their elemental composition by Perkin-Elmer 3100, Atomic Absorption Spectrometer. Many elements e.g. Ca, Cd, Co, Cr, Cu, Fe, K, Mg, Na, Pb, Zn were detected quantitatively. Among these Ca, Fe, K, Mg and Na were found in large amounts [on the average 3509.86-48354.21 ppm] Co, Cu, Pb and Zn were present in small amount [on the average 11.21-80.08 ppm] while Cr and Cd were detected in extremely small amount [on the average 0.25-1.18 ppm]. The average quantity of K. was detected to be the highest among these algae [48354.2 ppm] followed by Na [21733.61 ppm] and Fe [3509.86 ppm]. The average amount of Zn [80.08 ppm] and Cd [1.18 ppm] were quite low, Cr was found in the lowest quantity [0.25 ppm]