http://localhost:80/xmlui/handle/123456789/14705 2026-04-23T02:08:57Z 2026-04-23T02:08:57Z BAHARUDDIN, NINIE NOOR DIANA ENCHE AZIZ, NURUL SHUHADA SOHIF, HAJAR NAEMAH KARIM, WAN AZLINA ABDUL AL-OBAIDI, JAMEEL R. BASIRAN, MOHD NAZIR http://localhost:80/xmlui/handle/123456789/14906 2022-12-12T05:39:26Z 2016-05-22T00:00:00Z

Title: MARINE MICROALGAE FLOCCULATION USING PLANT: THE CASE OF NANNOCHLOROPSIS OCULATA AND MORINGA OLEIFERA Authors: BAHARUDDIN, NINIE NOOR DIANA ENCHE; AZIZ, NURUL SHUHADA; SOHIF, HAJAR NAEMAH; KARIM, WAN AZLINA ABDUL; AL-OBAIDI, JAMEEL R.; BASIRAN, MOHD NAZIR Abstract: Marine microalgae have been commercially used as live feed for aquaculture and nutritional supplements. However, harvesting of marine microalgae is a major obstacle for industrial scale and one of the promising harvesting techniques is bio-flocculation. Nannochloropsis oculata from the culture broth was investigated. The potential of Moringa oleifera as a flocculant has been evaluated using jar test experiments. Moringa oleifera after oil extraction (MOAE) and with nonextracted Moringa oleifera (MOWE) have been studied and compared to chemical flocculant, aluminium sulphate. Three parameters involved: pH, settling time and flocculant dosage. When MOAE and MOWE were used as flocculants, the highest flocculation efficiency of Nannochloropsis oculata was observed at 93.77% (pH 7, 150 minutes, 5000 mg/L) and 70.56% (pH 7, 90 minutes, 4000 mg/L) respectively. Harvesting efficiency of 99.98% with short settling time, 30 minutes and 2000 mg/L of flocculant dosage at pH 6 was achieved using aluminium sulphate. The concentrated of Nannochloropsis oculata was then fed to the Brachionus plicatilis (rotifers) to observe the growth characteristics in 12 days period. Concentrates of MOWE gave better growth of Brachionus plicatilis than growth in concentrates of MOAE and live Nannochloropsis oculata. In contrast, growth of Brachionus plicatilis in aluminium sulphate was tremendously decline. In conclusion, bio-flocculation using Moringa oleifera was rapid, inexpensive and eco-friendly technology as no addition of chemical flocculants was required

2016-05-22T00:00:00Z MATWIEJUK, ANNA http://localhost:80/xmlui/handle/123456789/14905 2022-12-12T05:36:04Z 2016-05-21T00:00:00Z

Title: THE LICHENS IN THE AGRICULTURAL LANDSCAPE OF PODLASIE, NORTH EAST POLAND Authors: MATWIEJUK, ANNA Abstract: This paper carries information for diagnosis lichenobiota in the agricultural landscape of Poland NE. The research led to a better understanding of the problem of occurrence of lichens in the agricultural landscape. The functional groups of lichens, which were used to characterize lichen biota taking into account the morphological forms, frequency of occurrence and habitat requirements were determined. The basis for the specification of the more interesting taxa in the study area was to analyze the species composition of lichens in relation to the data on their previous records in rural areas, the degree of recognition in Poland NE and conservation status and threats in the country.

2016-05-21T00:00:00Z KHOKHAR, FARAH NAZ BURHAN, ZAIB-UN-NISA IQBAL, PERVAIZ ABBASI, JAVED SIDDIQUI, PIRZADA JAMAL AHMED http://localhost:80/xmlui/handle/123456789/14904 2022-12-12T05:34:14Z 2016-05-20T00:00:00Z

Title: DISTRIBUTION AND ABUNDANCE OF DIATOM SPECIES FROM COASTAL WATERS OF KARACHI, PAKISTAN Authors: KHOKHAR, FARAH NAZ; BURHAN, ZAIB-UN-NISA; IQBAL, PERVAIZ; ABBASI, JAVED; SIDDIQUI, PIRZADA JAMAL AHMED Abstract: This is the first comprehensive study on the distribution and abundance of diatom species from the coastal and nearshore waters of Karachi, Pakistan, bordering northern Arabian Sea. A total of 20 genera are recorded in high abundance (Cerataulina, Chaetoceros, Coscinodiscus, Cylindrotheca, Eucampia, Guinardia, Haslea, Hemiaulus, Lauderia, Lennoxia, Leptocylindrus, Navicula, Nitzschia, Trieres, Planktoniella, Pleurosigma, Pseudo-nitzschia, Rhizosolenia, Thalassionema and Thalassiosira). The most abundant genera were observed Guinardia, Chaetoceros, Leptocylindrus, Nitzschia and Lennoxia at all stations. Manora coastal station (MI-1) had high abundance corresponding with high Chlorophyll a (130µgLl ) values. Minimum abundance and low chlorophyll a value (0.05µgL-l) were observed at Mubarak Village coastal station (MV-1). Diatom abundance showed significant correlation with Chlorophyll a. In present study 12 centric and 8 pennate forms were recorded and similarly high diversity of centric taxa was observed compared to pennate forms. A total of 134 species are recorded of which 40 species were observed at four stations, 31species at three stations, 23 at two stations and 40 species only at one station. The total phytoplankton and diatom peak abundance was observed during NE monsoon (winter season) associated with nutrient loading through up-sloping of nutrient rich water upwelled off of Oman during South West monsoon. Overall higher diversity was observed at Manora coastal and nearshore stations (MI-1, MI-2) indicating the influence of organic pollution loading from Layari and Malir rivers.

2016-05-20T00:00:00Z REN, AITIAN WALY, NARKES LU, WEIHUA MA, CHUNHUI ZHANG, QIANBING LIU, HONGLING YANG, IEJING http://localhost:80/xmlui/handle/123456789/14903 2022-12-12T05:31:12Z 2016-05-19T00:00:00Z

Title: MYCORRHIZAL GLOMUS SPP. VARY IN THEIR EFFECTS ON THE DYNAMICS AND TURNOVER OF FINE ALFALFA (MEDICAGO SATIVA L.) ROOTS Authors: REN, AITIAN; WALY, NARKES; LU, WEIHUA; MA, CHUNHUI; ZHANG, QIANBING; LIU, HONGLING; YANG, IEJING Abstract: The distribution of fine roots in the soil profile has important implications related to water and nutrient uptake. The objective of this study was to compare the effects of different arbuscular mycorrhizal fungi (AMF) on the fine root dynamics of Medicago sativa L. cv. Sanditi. We used minirhizotrons to observe changes in fine root length density (FRLD, mm/cm2 )and fine root surface area density (FRSAD, mm2 /cm2 ) during the growing season. Fine root P concentrations and turnover rate were also measured. The colonization rate of fine roots varied depending on the AMF species. Colonization rates were highest when roots were inoculated with Glomus mosseae and lowest when roots were inoculated G. intraradices. Inoculation with AMF significantly increased both FRLD and FRSAD. G. versiforme increased FRLD and FRSAD most, whereas G. mosseae had the least effect. Inoculation with AMF also decreased fine root turnover rates. Inoculation with a mixture of AMF species increased fine root turnover and P concentrations more than inoculation with a single AMF species. Fine root length density increased to a maximum on Aug. 6 and then decreased. In comparison, FRSAD exhibited two peaks during the growing season. Overall, the results indicated that inoculation with AMF can significantly promote fine root growth and P uptake by alfalfa growing on soil with low P availability. The AMF may preserve fine root function late in the growing season.

2016-05-19T00:00:00Z