Browsing Qatar University Science Journal - [From 1981 TO 2007] by Subject "Marine Science"
Now showing items 1-20 of 67
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Acute Toxicity Of Some Oil Dispersants To Mullet Fry ( Liza Macrolepis) Of The Arabian Gulf
( Qatar University , 1986 , Article)The acute toxicity of Shell LTX, Shell Concentrate, Servo CD 2000 and Exxon OSD 9217 were used to calculate 72 - hr. LC ci\ and toxicity curves to the Mullet Fry ( Liza macrolepis) under the Arabian Gulf conditions (Temp. ... -
Adenylate Energy Charge As A Tool For Evaluating Sub-Lethal Toxicity
( Qatar University , 1999 , Article)Adenylate energy charge (AEC) is directly related to the cellular concentrations of the three adenylates nucleotides ATP, ADP and AMP. This biochemical index reaches high values (0.9) under optimal conditions but drops ... -
Algae Along Qatar Coasts Utilization And Future Prospects
( Qatar University , 1999 , Article)Most of marine algae have no equivalent on earth and therefore could be considered as irreplaceable sources of primary and secondary metabolites. This is especially the case for hydrocolloids from red and brown algae that ... -
Algal Nitrogen Fixation In The Northwestern Part Of The Arabian Gulf
( Qatar University , 1988 , Article)Nitrogen fixation and cell counts of blue-green algae and diatoms in the northwestern area of the Arabian Gulf were assayed during the (period, 7-20 November, 1984. Spatial variations indicated that the maximum rate of ... -
Assessment of metals pollution in the sediments of lake burullus, s.e. Mediterranean, egypt
( Qatar University , 1995 , Article)The present study aims to quantify the heavy metals contents in the sediments of Lake Burullus. Cu, Pb, Zn, and Cd were analyzed using ICP spectrometer. The contamination factors (CF) were calculated for each element. The ... -
Bio Accumulation Of Chromium, Nickel, Lead And Vanadium In Some Commercial Fish And Prawn From Qatari Waters
( Qatar University , 1997 , Article)A total of 150 fish and prawn samples representing the most economically important species were collected during 1995-96 by experimental fishing in three locations covering the coastal waters of Qatar. Fish and prawn flesh ... -
Biochemical composition of the copepod euterpina acutifrons from the Coastal waters of alexandria
( Qatar University , 1994 , Article)Protein, carbohydrate and lipid contents were determined in the most numerous and wide spread copepod Euterpina acutifrons collected from the coastal waters of Alexandria. Protein is the major biochemical component of the ... -
Biochemical Composition Of The Squid (Loligo Vulgaris) (Mollusca) From The Mediterranean Waters Off Alexandria, Egypt
( Qatar University , 1996 , Article)The seasonal biochemical variations of the squid Loligo vulgaris from the Egyptian Mediterranean waters off Alexandria were studied during November 1989 through August 1990. Water, lipid, protein and ash contents were ... -
Bionomics of the Shrimp Fishery in the Inshore Waters of Qatar
( Qatar University , 1982 , Article)The shrimp fishery in Qatar is carried out by artisanal crafts, operating from Doha and Al Khor on the East coast. The fishing is restricted to the 2-6 Fm depth range and Penaeus semisulcatus forms about 95 % of the shrimp ... -
By-Catch Of Commercial Bottom Trawl Fishery From Qatar Waters, Arabian Gulf
( Qatar University , 1989 , Article)The by-catch of the bottom trawl fishery from Qatar water, Arabian Gulf was analysed during the year (1987) on bimonthly basis. It was estimated that 496-635 tons were discarded as by-catch which included a lot of commercialy ... -
Capabilities/limitations of landsat-tm data for bathymetric analysis of shallow marine environment: A case study
( Qatar University , 1999 , Article)The intensity of the light received by Landsat satellite sensors is inversely proportional to the path length though the sea water column. Since the light passes down to the sea floor and back again, the intensity should ... -
Circulation And Water Masses And Their Implication On Pollutant Transport During Summer In Abuquir Bay (Egypt)
( Qatar University , 1991 , Article)Abuquir Bay is a shallow area with a mean depth of about 10 meters, and it is affected by significant sources of industrial and agricultural pollutants. Water masses, the distribution of dissolved oxygen and total suspended ... -
The Commercial Value of Fish at Fasht Ad-Dibal and its Associated Biota in the Qatari Waters, Arabian Gulf
( Qatar University , 2007 , Article)The present study is an attempt to study the fish diversity of Fasht Ad-Dibal in the north-western coast of Qatar. Thirty three species belonging to 25 families were caught using gill nets, gargoors (metal traps) and hand ... -
Concentration of Some Heavy Metals in Short Cores in the Nearshore Sediments of Alexandria , Egypt
( Qatar University , 2006 , Article)The Western Harbor, Eastern Harbor and Abu Qir Bay are three sites located along the Alexandria coast. These sites are characterized by extensive maritime and industrial activities. To investigate the penetration of heavy ... -
Demersal Fish Resources Around Qatar
( Qatar University , 1982 , Article)The study was based on the data available from Fishery Resources Survey in the Gulf and Gulf of Oman, conducted by F.A.O., between 1975 and 1979 and the samplings of the fish production in Qatar during 1980/81. The survey ... -
Ecological Characteristics Of The Littorial Fauna At Tubli Bay, Bahrain
( Qatar University , 1995 , Article)Papers presented at The gulf symposium on Environmental biology, University of Qatar, 7-9 May 1994 *********** The intertidal fauna inhabiting a wide range of habitats at Tubli, an inshore bay on the eastern part of ... -
Ecophysiology Of Desert Animals
( Qatar University , 1995 , Article)The principal environmental problems that confront both plants and animals in the desert are water shortage and flooding, thermal extremes, and the absence of cover. Adaptational responses to these include cryptobiosis, ... -
Effects Of Overfishing And Abandoning Bottom Trawling On Qatar's Fisheries
( Qatar University , 1996 , Article)The present study was conducted to overview the effects of abandoning bottom trawling and increasing fishing effort on the structure and dynamics of Qatar's fisheries during 1985-1994, using the fishery statistics data, ... -
Energy Exchange Between The Sea And The Atmosphere At Doha Harbour (Qatar) In The Arabian Gulf
( Qatar University , 1996 , Article)Meteorological and oceanographic data from 1979 to 1988 have been analyzed and utilized to calculate the heat budget terms of the water at Doha Harbour. The monthly mean of solar radiation has the largest annual amplitude, ... -
Enzymatic Upgrading of Fish and Crustacean Products
( Qatar University , 1999 , Article)Fish wastes constitute an important source of biologically active molecules possessing peculiar properties and practical application promises in various areas ( agriculture, medicine, chemistry, biotechnology ). Several ...
