Amany Haroon

Amany Haroon
National Institute of Oceanography and Fisheries | NIOF · Division of Fresh Water and Inland Lakes

prof. of hydrobiology (Botany)

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38
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419
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Publications

Publications (38)
Article
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by protein (> 85% of biomass), indicating that phyto-plankton has a high nutritional value. Elevated zoo-plankton count was recorded at El-Zamalek, which coincided with the peak of phytoplankton abundance. Mollusca were the dominant macrobenthic invertebrates on most of the island's shores. Bony fishes were represented by 27 species and two crustac...
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Lake Manzala is considered as an ecosystem of extreme importance to man and biodiversity. This article presents an overview on the different changes of Lake Manzala in terms of plant distribution, diversity, area of vegetation cover, in addition to the benefits and uses offered by such plants. Eleven aquatic macrophyte species dominated by Potamoge...
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During the last decades, the Rosetta branch of the River Nile received a great number of drainage wastes (domestic, agricultural, and industrial) that affected different aquatic organism’s life. Accordingly, characterizing the biological aspects of this water body is necessary. The current study aims to survey the biodiversity of flora and fauna al...
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Aquatic macrophytes are plants that live in water or wet soil, grow profusely in lakes and waterways, and provide several ecological benefits. Lake Nasser, an artificial reservoir, has been the most critical element in Egypt’s social and economic development. The temperature changes and the Ethiopian Renaissance Dam represent the most prominent cha...
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This study focused on the monitoring and assessment of aquatic ecosystem functioning based on the abiotic and biotic features of Lake Nasser in the post-flood and pre-flood periods as the last ones before water storing behind the Grand Ethiopian Renaissance Dam. The physicochem-ical parameters, distribution and structure of biotic communities, incl...
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During the last decades, the Rosetta branch of the River Nile received a great number of drainage wastes (domestic, agricultural, and industrial) that affected different aquatic organism’s life. Accordingly, characterizing the biological aspects of this water body is necessary. The current study aims to survey the biodiversity of flora and fauna al...
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Background and objective: Damietta branch is one of the two main branches of the Nile River (Egypt), that often inhabited by many aquatic organisms, which affect and reflect its water characteristics. This study examine the relation between submerged macrophytes, their epiphytic microalgae and bacterial communities as well as the variations in the...
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This paper provided an ecological and phytochemical evaluation of the aquatic macrophytes at El-Rayah El-Nasery and El-Noubaria Canal of the Nile River, Egypt. Throughout the study period from spring 2015 to winter 2016, 12 macrophyte species related to 6 families and 8 genera were recorded, one floating species, three submerged and eight emergent....
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Macrophytes have been approved as a natural resource for nutritional components as well as antibacterial and anti-biofilms agents. In this context the nutritive status and the antimicrobial activity of the Egyptian macrophytes species Potamogeton nodosus have been studied. P. nodosus have approached a high nutritional value which was reflected in l...
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Evaluation of the nutrition values of six selected macrophytes related to different families and representing different habitats was done through, estimation of their energy values, as well as their organic and mineral components. Changes in energy values and biochemical composition of some hydrophytes from Lake Manzalah were discussed in relation...
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Variations in the biochemical structure of seven macroalgal species, belonging to different families were investigated along with subsequent analysis of relevant water physico-chemical parameters. Samples were collected from different sites along the Egyptian Qarun Lake during spring of 2017. The relationship between the macroalgal components and a...
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In this study, the phytoplankton biomass and species composition in El-Quanater El-Khayria (River Nile, Egypt) was analyzed at four sampling sites on a program of a seasonally sampling and supported by measurements of different water variables as well as biomass production of most common aquatic macrophytes. The major species of aquatic macrophytes...
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The present study aimed to assess the effect of ecological factors on distribution and species composition of macrophytes and phytoplankton communities at El-Rayah Al-Behery. Changes in the quantitative and qualitative composition of the macrophytes and phytoplankton communities were detected in relation to season and sampling site. A total of elev...
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The anti-algal activity of five macrophyte extracts on the cyanobacterium Microcystis aeruginosa in Egypt was investigated in 2013. Extract activity varied according to plant type, extracting solvent and its concentration. The highest inhibitory activity was achieved with ethanol extract at a concentration of 80 mg l⁻¹, followed by chloroformic ext...
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The aim of this work was to investigate and compare the phytochemical constituents and anti-algal activities of crude extracts from dry macrophytes species, Potamogeton crispus and Myriophyllum spicatum. Organic solvents differed in polarity including petroleum ether, methylene chloride, chloroform, acetone and methanol were used to extract the phy...
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Spirogyra species are one of the most common freshwater filamentous green algae reported to have antimicrobial activities. However, their chemical constituents have not been entirely detected. In this work, the chemical constituents of Spirogyra longata, successively extracted with petroleum ether, methylene chloride, chloroform, acetone and methan...
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Objective: To find the best actinomycete that has potential application value in the heavy metal remediation due to its special morphological and physiological metabolism. Methods: In some areas of River Nile, Egypt, a total of 67 actinomycete isolates (17 isolates from surface water and 50 from sediment) were identified. In addition, the studied a...
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Ethanolic and water extracts of three macrophytes (roots); Echinochloa stagnina (Retz.) P. Beauv; Pistia stratiotes (L.) and Nymphaea lotus (L.) from El-Serw, Dakahlia, Egypt were studied to verify their antimicrobial activities against certain microbial isolates by using agar well diffusion method. Bi-fold dilution technique revealed that all the...
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The present work aimed to find a new natural food resource suitable to reduce the cost of commercial feeds, through evaluating the nutritional potential of two commonly available, aquatic weeds; Pistia stratiotes L and Nymphaea lotus L from El-Serw irrigation canal, which situated at North Eastern part of the Nile Delta South of Manzalah Lake. The...
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The Role of Different Macrophytes Groups in Water Quality, Sediment Chemistry and Microbial Flora of Both Irrigation and Drainage Canals Amany M. Haroon and Said M. Daboor Hydrobiology Laboratory, Inland Waters and Aquaculture Branch, National Institute of Oceanography and Fisheries, Cairo, Egypt Abstract: This study was carried out to determine th...
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The concentrations of both macro-and micro-elements in two submerged macrophytes (Potamogeton pectinatus L. and Ceratophyllum demersum L.) and the corresponding water and sediment samples from El-Raswa south of Manzalah Lake (Egypt), were studied throughout the period from spring 2005 to spring 2006. The analysis was also carried out in plant, wate...
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The present work was designed to evaluate the nutritional potential as well as the effect of 6 weeks feeding w ith three aquatic macrophytes namely Eichhorniaa crassipes (Mart) Solms. (Ward en-nil), Echinochloa stagnina L. (Niseela) and Polygonum tomentosum L. (Qordaab) collected from Damitta branch of the River Nile on the growth parameters, muscl...
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The antimicrobial activities of aqueous and organic solvents (chloroform, ethanol and methanol) extracts of four plants Ceratophyllum demersum L., Eichhornia crassipes, Potamogeton crispus and Potamogeton pectinatus were tested in vitro against seventeen different microorganisms including Gram-positive and Gram-negative bacteria and fungi. Nine of...
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Variations in lipid, protein and carbohydrate contents of Enteromorpha spp. were examined over a seven-month period from April to October 1993. The samples were collected from seven sampling stations along the Gulf of Gdańsk coast. The lipid content was low and varied slightly from 3.47 ± 1.76% of DW at Puck to 4.36 ± 2.17% of DW at Rewa and Chalup...
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Variations in lipid, protein and carbohydrate contents of Enteromorpha spp. were examined over a seven-month period from April to October 1993. The samples were collected from seven sampling stations along the Gulf of Gdańsk coast. The lipid content was low and varied slightly from 3.47 ± 1.76% of DW at Puck to 4.36 ± 2.17% of DW at Rewa and Chałup...
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The variations in distribution, species composition, biomass and water content of Enteromorpha spp. in the Gulf of Gdansk in relation to sampling stations and season are discussed. Only four Enteromorpha species were identified in the samples collected, the most frequent being E. intestinalis (L.) Link. The species composition was found to vary in...
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The energy content of Enteromorpha spp. from Jurata (situated in the western part of the Gulf of Gdańsk) was determined. The values were measured directly by combustion in a microbomb calorimeter and indirectly by calculation based on the biochemical composition, and on carbon and nitrogen contents. On the basis of the results obtained, very little...
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The variations in energy values and lipid content in Enteromorpha spp. collected from Jurata at monthly intervals during the period from November 1992 to Octo-ber 1993 and from 7 stations situated on the coast of the Gulf of Gda´nskGda´nsk during September 1993 in relation to season and place are presented. As far as the samples from Jurata are con...
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Oceanologia, ISSN 0078-3234, vol. 37, nr. 1, 99-110 The contents of Cu, Zn, Cd, and Pb were determined in samples of Enteromotpha spp. collected at monthly intervals from Nov. 1992 to Oct. 1993 at different stations on the coast of the Gulf of Gdansk. Zn occurs in the highest concentrations, followed by Cu, Pb and Cd. Affiliation: Institute of Ocea...

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