ORCID Profile
0000-0003-4438-9065
Current Organisation
Universiti Putra Malaysia
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Publisher: Triveni Enterprises
Date: 30-09-2020
Publisher: Michigan State University Press
Date: 02-01-2019
DOI: 10.1080/14634988.2018.1505139
Abstract: The relationship between zooplankton community structure and selected environmental conditions was investigated by simultaneous two-day consecutive s ling in the waters overlying coral and sand sites off Sibu Island and a seagrass site off Tinggi Island, Johor, Malaysia. A total of 129 taxa were identified, 60 non-copepod taxa and 69 copepod species in all s les. Uni- and multi-variate analyses reveal distinct coral, sand, seagrass copepod assemblages with indicator copepod species and attributes of their size fractions. Small fraction (100–335 µm) s les contained greatest number of in iduals, few rare species and were densest at onshore depths, and the opposite for large fraction (& µm) s les but were densest at nighttime and most species rich in the coral site at night. Higher species ersity at offshore stations is due likely to ecotonal effects of overlapping oceanic and nearshore communities. This study demonstrates the usefulness of uni- and multi-variate analyses in identifying patterns in zooplankton community structure in representative shallow tropical habitats, and the need for accurate zooplankton taxonomy, nighttime and daytime and onshore and offshore s ling, and size fractionation of s les.
Publisher: Springer Science and Business Media LLC
Date: 25-11-2019
Publisher: Hindawi Limited
Date: 23-02-2018
DOI: 10.1111/JAI.13650
Publisher: Michigan State University Press
Date: 24-09-2009
DOI: 10.1080/14634980903149977
Abstract: The zooplankton composition and distribution were studied during four oceanographic cruises in the Straits of Malacca between November 1998 and August 2000 with 140 μm-mesh and 45-cm diameter NORPAC net. Zooplankton s les were analyzed for the faunal composition and abundance. Zooplankton abundance peaked during pre-southwest monsoon (mean of 12, 918 ± 5, 635 ind. m3). Copepods were the most important constituents of the zooplankton in all areas. Copepods (including copepodites) accounted for 71.3%, 71.2%, 70.9% and 57.9% of the total zooplankton populations during consecutive cruises I, II, III and IV, respectively. Molluscs (6.3% to 12.4%) and crustacean's nauplii (4.4% to 6.0%) comprised the important groups of non-copepod zooplankton. Spatio-temporal variation in zooplankton abundance was not statistically significant. Zooplankton was more abundant in the near-coastal areas than in offshore areas, but the difference was not significant.
Publisher: Triveni Enterprises
Date: 30-09-2020
Publisher: IOP Publishing
Date: 11-2019
DOI: 10.1088/1755-1315/380/1/012019
Abstract: This paper assessed and compared physicochemical profiles and bio ersity indices of two shallow lakes namely the natural Bera Lake and Bukit Merah reservoir in Peninsular Malaysia. Variations in relation to hydro-meteorological variables, including rainfall, wind speed and air temperature were also measured during the field s ling. The results showed clear distinctions between natural and man-made lakes in terms of physical and chemical properties of lake waters and their relationships to the hydro-meteorological dynamic. Persistent oxygen and temperature differences between the epilimnion and hypolimnion were clearly detected in Bukit Merah reservoir under low winds and strong heat. Oxycline also persist during flooding or high turbidity levels indicating their enriched bottom waters. On the other hand, the natural Bera lake showed temporary stratification during the dry season with low winds but the water columns were thoroughly mixed during the wet season when the water temperature was lower and wind speed was higher. Plankton ersity in Bera lake was significantly higher (p 0.05) than the Bukit Merah reservoir, probably due to the much longer history of the natural lake compared to the man-made one. Due to the longer residence time of the reservoir compared to the natural lake, the former tends to be more vulnerable to eutrophication if subjected to uncontrolled nutrient enrichment.
Publisher: Triveni Enterprises
Date: 15-09-2018
Publisher: Springer Science and Business Media LLC
Date: 03-2005
Publisher: MDPI AG
Date: 24-08-2020
DOI: 10.3390/D12090322
Abstract: A study was conducted to evaluate planktonic microcrustacean species composition, abundance, and ersity in lakes with different trophic status and to determine the relationship between microcrustacean community structure and lake environmental conditions. This study hypothesized that there are correlations between eutrophication levels and microcrustacean community structures in a lake. Three shallow lakes of different trophic status (Sembrong, Putrajaya and Subang lakes) were selected for this study. Two-Way Analysis of similarities (ANOSIM) revealed differences in microcrustacean ersity and density amongst lakes, where the hypereutrophic condition in Sembrong lake resulted in the lowest ersity but the highest density of microcrustaceans. Similarity percentage (SIMPER) analysis identified the discriminator species among lakes where the domination of small-sized microcrustaceans was observed in lakes with high levels of eutrophication the hypereutrophic Sembrong lake (Ceriodaphnia cornuta, 74.0%) the meso-eutrophic Putrajaya lake (Bosmina longirostris, 46.9% C. cornuta, 19.4%). Chlorophyll a, total phosphorus and water transparency showed significant roles in the distribution of microcrustaceans. The canonical correspondence analysis (CCA) scores indicated that small-sized C. cornuta and B. longirostris were related to the eutrophic conditions of lakes. This study elucidated that the lake trophic status could be one of the main factors contributing to the community restructuring of microcrustaceans in tropical lakes.
Publisher: Triveni Enterprises
Date: 16-11-2017
Publisher: Springer Science and Business Media LLC
Date: 18-12-2018
Publisher: CSIRO Publishing
Date: 2019
DOI: 10.1071/MF18072
Abstract: In this study we compared ecosystem trophic structure between a tropical mangrove forest at Matang, Malaysia, and a temperate mangrove forest near mangrove poleward limits at Towra Point in south-east Australia. These forests are separated by 8500km of ocean over 45° of latitude and are of contrasting size, productivity and ersity. However, we observed a marked degree of similarity in food chain length (approximately four trophic levels in both forests), the taxonomy of key intermediate members of the food chain and the isotope signature of primary carbon sources, suggesting a strong contribution of surface organic matter rather than mangrove detritus. Common families were represented among dominant grazing herbivores, zooplanktivorous fishes, decapod crustaceans and top predators. These similarities suggest that there is some consistency in trophic interactions within two mangroves on opposite sides of the Indo-Pacific, despite a degree of evolutionary ergence in the assemblage.
No related grants have been discovered for Fatimah Yusoff.