نتایج جستجو برای: cyanophyta

تعداد نتایج: 197  

Journal: :JISIP (Jurnal Ilmu Sosial dan Pendidikan) 2023

Pemanfaatan lahan rawa Kalimantan Selatan sebagai perumahan sekarang banyak dilakukan, sehingga memberikan dampak pada organisme perairan seperti mikroalga. Mikroalga merupakan alga mikroskopis yang umumnya hidup di seluruh wilayah baik air tawar maupun laut. Materi kelas X SMA cenderung sulit dan abstrak, diperlukan media pembelajaran berbasis lokal untuk mempermudah pemahaman siswa. Penelitia...

2012
ChunLi Liu DanLing Tang

Algal blooms occur frequently in the coastal waters of the western South China Sea (SCS). This paper reports spatial and temporal variations of algal bloom events in these waters from 1993 to 2007. Twenty-five algal bloom events occurred in summer in the coastal waters of South and Central Vietnam where they were associated with wind-induced, coastal, nutrient upwelling and river discharges; a ...

2015
Anping Peng Juan Liu Wanting Ling Zeyou Chen Yanzheng Gao

This is the first investigation of the diversity and distribution of 16S rRNA and phenol monooxygenase (PHE) genes in endophytic and rhizosphere bacteria of plants at sites contaminated with different levels of PAHs. Ten PAHs at concentrations from 34.22 to 55.29 and 45.79 to 97.81 mg·kg(-1) were measured in rhizosphere soils of Alopecurus aequalis Sobol and Oxalis corniculata L., respectively....

2016
Wang Tian Huayong Zhang Lei Zhao Xiang Xu Hai Huang

The relationship between biodiversity and ecosystem functioning is a central issue in ecology. Previous studies have shown that producer diversity can impact the consumer community via predator-prey interactions. However, direct observations of this relationship remain rare, in particular for aquatic ecosystems. In this research, the relationship between phytoplankton diversity (species richnes...

Journal: :The Journal of biological chemistry 1987
S M Mayer S I Beale J D Weinstein

Glutamate was converted to the chlorophyll and heme precursor delta-aminolevulinic acid in soluble extracts of Euglena gracilis. delta-Aminolevulinic acid-forming activity depended on the presence of native enzyme, glutamate, ATP, Mg2+, NADPH or NADH, and RNA. The requirement for reduced pyridine nucleotide was observed only if, prior to incubation, the enzyme extract was filtered through activ...

2014
Plamen Stoyanov Dzhemal Moten Rumen Mladenov Balik Dzhambazov Ivanka Teneva

The polyphasic approach is the most progressive system that has been suggested for distinguishing and phylogenetically classifying Cyanoprokaryota (Cyanobacteria/Cyanophyta). Several oscillatorialean genera (Lyngbya, Phormidium, Plectonema, and Leptolyngbya) have problematic phylogenetic position and taxonomic state because of their heterogeneity and polyphyletic nature. To accurately resolve t...

Journal: :Journal of environmental biology 2011
Moshe Gophen Migal

The impactof cladocerans metabolic activities on the carbon (C), nitrogen (N) and phosphorus (P) dynamics in Lake Kinneret (Israel) is presented. The study, is based on the incorporation of field data and experimental measurements. Grazing, respiration and production rates of Diaphanosoma spp., Ceriodaphnia spp. and Bosmina spp. were experimentally measured at three temperatures, and the result...

2017
Catarina Churro Elsa Dias Elisabete Valério

Cyanobacteria are a diverse well adapted group of organisms that presents amazing morphological diversity. Cyanobacteria can be unicellular or colonial (filamentous, spherical or amorphous) (Fig. 1). Since cyanobacteria have cells larger than normal bacterial cells and behavior more similar to algae, they were classified under the microalgae for a long time and acquire the name of blue-green al...

Journal: :Journal of medicinal food 2007
Aaron N Hart Lue Ann Zaske Kelly M Patterson Christian Drapeau Gitte S Jensen

The present research was designed to study the effects of an extract from the edible cyanophyta Aphanizomenon flos-aquae on human natural killer (NK) cells. We have previously shown, using a double-blind randomized placebo-controlled crossover design, that ingestion of 1.5 g of dried whole A. flos-aquae resulted in a transient reduction in peripheral blood NK cells in 21 healthy human volunteer...

Journal: :Asian Journal of Fisheries and Aquatic Research 2022

This research aims to determine the structure of phytoplankton community in waters Cikidang River, which can use as a bioindicator water quality. The began November 2021-February 2022 using survey method. Sampling does at four stations. determination stations by considering land and river orders. parameters analyzed are transparency, temperature, Salinity, pH, Carbon Dioxide (CO2), Biochemical ...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید