A checklist of Cyanobacteria (Blue-green algae) has been made by reviewing available literature in order to contribute the knowledge biodiversity algae Punjab state India. The list records 317 taxa phylum distributed among 74 genera, 32 families, and six orders. Oscillatoriales 115 taxa, followed Nostocales (84), Synechococcales (60), Chroococcales (49), Spirulinales (8), Pleurocapsales (1). fa...

Enclosure experiments with all combinations of NH4 and PO4 treatments were carried out in the northern Baltic coastal zone during the post–spring bloom growth season. Empirical models were used to identify the important 3d treatment effects on the state and process variables governing the main plankton compartments. Moreover, dilution experiments revealed the main nutrient sources for algal gro...

In coastal and estuarine waters, algae range from single-celled forms to the seaweeds. Cyanobacteria are organisms with some characteristics of bacteria and some of algae. They are similar in size to the unicellular algae and, unlike other bacteria, contain blue-green or green pigments and are able to perform photosynthesis; thus, they are also termed blue-green algae. Algal blooms in the sea h...

In coastal and estuarine waters, algae range from single-celled forms to the seaweeds. Cyanobacteria are organisms with some characteristics of bacteria and some of algae. They are similar in size to the unicellular algae and, unlike other bacteria, contain blue-green or green pigments and are able to perform photosynthesis; thus, they are also termed blue-green algae. Algal blooms in the sea h...

The physico-chemical characteristics, phytoplankton composition and distribution at the East mole area of the Lagos harbour were investigated between January and June, 2012. The physicochemical conditions varied between high brackish and sea water chemistry. Records were Air (26 33 0 C) and Water temperatures (28 31 0 C), Salinity (19.40 30.72 0 /00), Nutrients (Nitrate ≥ 3.11 mg/L; Phosphate ≥...

In a previous paper [1] we discussed biliverdin IXa as an intermediate of phycocyanobilin biosynthesis (also compare [2—4]). The experiments involved the incubation of red algae of the species Cyanidium caldarium III-D-2 with the tetrapyrrole precursor 5-aminolevulinic acid. After 2—3 days incubation we observed as a main product a rather polar blue pigment of an as yet unknown structure in the...

The effects of UV irradiation (254 mmu) on a coccoid blue-green alga Agmenellum quadruplicatum, Strain PR-6, have been examined in terms of the survival curve and measurement of short time photosynthetic rates. From study of survival evidence has been found for a strong photoreactivation centered near 430 mmu. Measurements of photosynthetic rate suggest that there is a correlation between decay...

A tobacco-like odorous compound isolated from a bloom of the blue-green alga M icrocystis w esenbergii and a laboratory culture of M. aeruginosa was analysed by gas-liquid chromatography and mass spectrometry. Its structure was determined as /?-cyclocitral. No other monoterpenes have been detected in these and in other blue-green algae. The hydrocarbon content was 0.10 — 0.18% of the dry weight...

A toxin extracted from a waterbloom of the blue-green alga Microcystis aeruginosa was found to have an LDioo to mice of 3 mg/kg. Death occurred in less than 4 hours and was accompanied by symptoms corresponding to those of the fast death factor found by others in blue-green algae. The toxin was found to have no effects on three species of fish and a microcrustacean in concentrations up to 10 mg...