The Combined Effects Of Some Abiotic Factors And Nutrient Conditions On The Growth And Biochemical Composition Of Four Selected Marine Diatoms, Isolated From Penang National Park Coastal Waters

In this study, four marine diatoms Nitzschia panduriformis W. Gregory; Nitzschia lorenziana Grunow; Cylindrotheca closterium (Ehrenberg) and Navicula distans (W. Smith), were isolated from water samples collected from eight stations located around the coastal waters of Penang National Park. Identifi...

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Main Author:	Alsull, Mohamed Mohamed
Format:	Thesis
Language:	English
Published:	2013
Subjects:	QH1 Natural history (General - Including nature conservation geographical distribution)
Online Access:	http://eprints.usm.my/43821/1/Mohamed%20Mohamed%20Alsull24.pdf
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id	my-usm-ep.43821
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spelling	my-usm-ep.438212019-04-12T05:26:10Z The Combined Effects Of Some Abiotic Factors And Nutrient Conditions On The Growth And Biochemical Composition Of Four Selected Marine Diatoms, Isolated From Penang National Park Coastal Waters 2013-09 Alsull, Mohamed Mohamed QH1 Natural history (General - Including nature conservation, geographical distribution) In this study, four marine diatoms Nitzschia panduriformis W. Gregory; Nitzschia lorenziana Grunow; Cylindrotheca closterium (Ehrenberg) and Navicula distans (W. Smith), were isolated from water samples collected from eight stations located around the coastal waters of Penang National Park. Identification of the isolated species was carried out based on the morphological and fine characteristics of the frustules observed under SEM, as well as amplifying of specific region of the DNA using Polymerase Chain Reaction (PCR) molecular technique. . The isolated species were studied under varied culture conditions; temperature 5, 15 and 26 ±1˚C; salinity 6, 13 and 27±1‰; light duration 12:12 h light: dark cycle and 24 h continuous light; various nitrogen and phosphorus concentrations (free N and P media, 90% reduction, 50 reduction and full strength media 100%) using F/2 media as a growth medium. The effects of fluctuation in these culturing conditions were investigated on the growth kinetic, growth rate (d -1), chlorophyll a content (μgmL-1), dry weight (mgL-1) and the biochemical composition including total lipid, carbohydrate and protein content as percentage of the dry weight (%) Among the four diatoms tested, Nitzschia panduriformis and Navicula distans recorded the highest growth rate (0.63 and 0.61 d -1 respectively); while the growth rate of Nitzschia lorenziana never exceeded 0.44 d -1 under optimum growth conditions. 2013-09 Thesis http://eprints.usm.my/43821/ http://eprints.usm.my/43821/1/Mohamed%20Mohamed%20Alsull24.pdf application/pdf en public phd doctoral Universiti Sains Malaysia Pusat Pengajian Sains Kajihayat
institution	Universiti Sains Malaysia
collection	USM Institutional Repository
language	English
topic	QH1 Natural history (General - Including nature conservation geographical distribution)
spellingShingle	QH1 Natural history (General - Including nature conservation geographical distribution) Alsull, Mohamed Mohamed The Combined Effects Of Some Abiotic Factors And Nutrient Conditions On The Growth And Biochemical Composition Of Four Selected Marine Diatoms, Isolated From Penang National Park Coastal Waters
description	In this study, four marine diatoms Nitzschia panduriformis W. Gregory; Nitzschia lorenziana Grunow; Cylindrotheca closterium (Ehrenberg) and Navicula distans (W. Smith), were isolated from water samples collected from eight stations located around the coastal waters of Penang National Park. Identification of the isolated species was carried out based on the morphological and fine characteristics of the frustules observed under SEM, as well as amplifying of specific region of the DNA using Polymerase Chain Reaction (PCR) molecular technique. . The isolated species were studied under varied culture conditions; temperature 5, 15 and 26 ±1˚C; salinity 6, 13 and 27±1‰; light duration 12:12 h light: dark cycle and 24 h continuous light; various nitrogen and phosphorus concentrations (free N and P media, 90% reduction, 50 reduction and full strength media 100%) using F/2 media as a growth medium. The effects of fluctuation in these culturing conditions were investigated on the growth kinetic, growth rate (d -1), chlorophyll a content (μgmL-1), dry weight (mgL-1) and the biochemical composition including total lipid, carbohydrate and protein content as percentage of the dry weight (%) Among the four diatoms tested, Nitzschia panduriformis and Navicula distans recorded the highest growth rate (0.63 and 0.61 d -1 respectively); while the growth rate of Nitzschia lorenziana never exceeded 0.44 d -1 under optimum growth conditions.
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Alsull, Mohamed Mohamed
author_facet	Alsull, Mohamed Mohamed
author_sort	Alsull, Mohamed Mohamed
title	The Combined Effects Of Some Abiotic Factors And Nutrient Conditions On The Growth And Biochemical Composition Of Four Selected Marine Diatoms, Isolated From Penang National Park Coastal Waters
title_short	The Combined Effects Of Some Abiotic Factors And Nutrient Conditions On The Growth And Biochemical Composition Of Four Selected Marine Diatoms, Isolated From Penang National Park Coastal Waters
title_full	The Combined Effects Of Some Abiotic Factors And Nutrient Conditions On The Growth And Biochemical Composition Of Four Selected Marine Diatoms, Isolated From Penang National Park Coastal Waters
title_fullStr	The Combined Effects Of Some Abiotic Factors And Nutrient Conditions On The Growth And Biochemical Composition Of Four Selected Marine Diatoms, Isolated From Penang National Park Coastal Waters
title_full_unstemmed	The Combined Effects Of Some Abiotic Factors And Nutrient Conditions On The Growth And Biochemical Composition Of Four Selected Marine Diatoms, Isolated From Penang National Park Coastal Waters
title_sort	combined effects of some abiotic factors and nutrient conditions on the growth and biochemical composition of four selected marine diatoms, isolated from penang national park coastal waters
granting_institution	Universiti Sains Malaysia
granting_department	Pusat Pengajian Sains Kajihayat
publishDate	2013
url	http://eprints.usm.my/43821/1/Mohamed%20Mohamed%20Alsull24.pdf
_version_	1747821285184897024

The Combined Effects Of Some Abiotic Factors And Nutrient Conditions On The Growth And Biochemical Composition Of Four Selected Marine Diatoms, Isolated From Penang National Park Coastal Waters

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