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Publications
Publications (49)
Introduction Due to increased anthropogenic activities, fish can accumulate toxic compounds such as trace elements which may increase human exposure to these contaminants even at small concentrations. The Lebanese coast is facing several anthropogenic pressures, namely urbanization, overexploitation of coastal resources, the release of urban and in...
The European hake. Merluccius merluccius (L. 1758) is a gadoid species distributed throughout the Mediterranean Sea and in the Atlantic Ocean from Iceland to Morocco (Whitehead et aI., 1984) occurring at depths from shallow waters to 800 m. It ranks among the commercially most important demersal species in the Mediterranean Sea. The European hake i...
Lithognathus mormyrus or the striped seabream is a common demersal stock inhabiting the Mediterranean Sea. It is a demersal species that inhabits rocky and sandy bottoms down to 80 m depth. L. mormyrus is an economically important species for the coastal area fisheries in Lebanon and the neighboring regions, such as the Aegean Sea and the Mediterra...
Pollution of the aquatic environment is a real threat across the globe. It is becoming a topic of intense study for researchers. It has been updated and almost completely revised. The Mediterranean Sea has been recognized as a target hotspot of the world as the pollutant concentration in this region is greater than the levels in other oceans.
The b...
The Rhodes Gyre is a cyclonic persistent feature of the general circulation of the Levantine Basin in the eastern Mediterranean Sea. Although it is located in the most oligotrophic basin of the Mediterranean Sea, it is a relatively high primary production area due to strong winter nutrient supply associated with the formation of Levantine Intermedi...
The Rhodes Gyre is a cyclonic persistent feature of the general circulation of the Levantine Basin in the eastern Mediterranean Sea. Although it is located in the most oligotrophic basin of the Mediterranean Sea, it is a relatively high primary production area due to strong winter nutrient supply associated with the formation of Levantine Intermedi...
Seven ciliate tintinnids are reported in this study for the first time in Lebanese marine waters: Leprotintinnus nordqvisti (Brandt 1906) Kofoid and Campbell, 1929, Codonellopsis ostenfeldi Schmidt, 1902, Dictyocysta fundlandica Ehrenberg, 1854, Undellopsis subangulata (Jörgensen) Kofoid and Campbell, 1929, Canthariella pyramidata (Jörgensen 1924)...
The eastern Mediterranean surface circulation is highly energetic and composed of structures interacting stochastically. However, some main features are still debated, and the behavior of some fine-scale dynamics and their role in shaping the general circulation is yet unknown. In the following paper, we use an unsupervised neural network clusterin...
The Eastern Mediterranean surface circulation is highly energetic, composed of structures interacting stochastically. However, some main features are still debated, and the behavior of some fine-scale dynamics and their role in shaping the general circulation is yet unknown. In the following paper, we use an unsupervised neural network clustering m...
Pufferfishes are among the best-known marine organisms that accumulate marine biotoxins such as Tetrodotoxin (TTX). In the Mediterranean Sea, the silver-cheeked toadfish Lagocephalus sceleratus is the most reported TTX-bearer, causing many fatal and non-fatal cases. In Lebanon, no previous studies have measured TTX levels although the possibility o...
For a better evaluation of the ecological status of aquatic ecosystems, especially at the land–sea interface, a multidisciplinary holistic approach is crucial and various indices should be taken into account. The combined use of chemical and biological indices may be an efficient way to determine ecological status in highly dynamic coastal ecosyste...
Due to its dire impacts on marine life, public health, and socio-economic services, oil spills require an immediate response. Effective action starts with good knowledge of the ocean dynamics and circulation, from which Lagrangian methods derive key information on the dispersal pathways present in the contaminated region. However, precise assessmen...
In this publication describe the first photographic match of four killer whales between Iceland, Spain, and Italy, and of one of these individuals between these countries and Lebanon. We note confirmed sightings, as well as observations on health status, foraging strategies, and social behavior of these individuals between June 2013 and February 20...
An improved estimation of the surface currents in the Levantine Basin of the Mediterranean sea is crucial for a wide range of applications, including pollutants transport and nutrients distribution. This estimation remains challenging due to the scarcity or shortcomings of various data types used for this purpose. In this paper, we present an objec...
Despite emerging and increasing concerns related to marine micro and macroplastics, no systematic surveys have been undertaken yet in the Lebanese marine area. To understand the spatio-temporal variation of plastic litter (macro and microplastics) in the Lebanese marine environment and to determine the sources of pollution, this study investigated...
Marine biotoxins are naturally existing chemicals produced by toxic algae and can accumulate in marine biota. When consumed with seafood, these phycotoxins can cause human intoxication with symptoms varying from barely-noticed illness to death depending on the type of toxin and its concentration. Recently, the occurrence of marine biotoxins has bee...
Jemaa, Sh., Lteif, M., Khalaf, G. & Fakhri, M. (2021). The Biodiversity and Seasonal Variation of Pelagic Fish Caught by Purse Seines in Tripoli, Northern Lebanese Coast. Lebanese Science Journal, 22(1), 82-97. This study highlights for the first time the biodiversity of fish assemblages in purse seine fisheries in the Tripoli region, north of Leba...
The coastal carbonate system regulates the pH of the coastal waters and controls the circulation of CO2 between land-sea interfaces and open sea system. In the context of the ELME (Evaluation of the Lebanese Marine Environment: A multidisciplinary study) project, a seasonal survey of the carbonate system has been started in 2019 through the samplin...
![Fig. 5. Monthly variations of (a) the dissolved oxygen, DO [μmol.kg−1]...](publication/332176920/figure/fig5/AS:782294092619776@1563524854515/Monthly-variations-of-a-the-dissolved-oxygen-DO-mmolkg-1-and-b-the-apparent_Q320.jpg)
Free access till the 7th of September 2019 via this link:
https://authors.elsevier.com/a/1ZP~v3Ruf15fXg
The carbonate system is a vital buffering system that controls the pH of seawater and maintains a healthy environment for marine organisms. As concerns regarding the fate of anthropogenic CO2 in the oceans are rising, it is becoming increasingly...
Highlights:
*This work aims to quantify the carbonate system in the Lebanese waters, Easternmost part of the Levantine Sub-basin, and to assess its tendency between 2012 and 2017.
*High quality measurements of total alkalinity (AT), total dissolved inorganic carbon (CT), with other environmental parameters, are being sampled monthly since 2012 betw...
We present a new and fast method that blends altimetric and drifter positions data in order to predict the surface velocity in the Eastern Levantine Mediterranean. The method relies on a variational assimilation approach where a velocity correction is continuously obtained by matching observed drifter positions with those predicted by a simple adve...
The global climate of the Lebanese coast is humid thermo–Mediterranean with a subtropical tendency to the South. The coastal waters are subject to the effect of the region's weather and climatic factors. Lebanon presents two main seasons: a hot dry summer and a cold rainy winter. The present work focuses on the inter-annual variations of monthly se...
The global climate of the Lebanese coast is humid thermo–Mediterranean with a subtropical tendency to the South. The coastal waters are subject to the effect of the region's weather and climatic factors. Lebanon presents two main seasons: a hot dry summer and a cold rainy winter. The present work focuses on the inter-annual variations of monthly se...
The dinoflagellate Ostreopsis siamensis was studied as part of a broad national
monitoring program along the Lebanese coastal waters. The monthly and spatial variations
of its density in water samples were carried out at 4 different rocky stations from
September 2000 to December 2001 and for a longer period (April 1997-December 2001 and
January 201...
The effect of continental inputs on environmental conditions and chlorophyll-a have been studied monthly in surface water samples from 5 littoral stations in central Lebanese coastal waters for a period of 3 years between September 2009 and June 2012. Three stations show different levels of impact as a result of river inputs and sewage discharges....
Abstract
The tintinnid ciliates community was monitored monthly over two years, from July 2001 to June 2003 at four stations in order to study the temporal and spatial patterns and the response of tintinnid species composition, abundance variation and seasonal succession to environmental variation in a chemical discharge zone in North Lebanon (East...
The Eastern Mediterranean Sea is one of the least studied areas for cetaceans in the Mediterranean Sea. Lack of basic knowledge such as species composition and habitats makes it impossible to develop effective conservation measures. Therefore, in order to determine the species composition, size and distribution of cetacean populations, cetacean sig...
The main functional wastewater treatment plant in Lebanon is suspected to be the major polluter for south Beirut marine areas from a depth of 60 m to the surface. To evaluate the state of the environment of the water column in relation to seasonal stratification, five profiles were executed between 2007 and 2009 at the location of the outfall of th...
The main functional wastewater treatment plant in Lebanon is suspected to be the major polluter for south Beirut marine areas from a depth of 60 m to the surface. To evaluate the state of the environment of the water column in relation to seasonal stratification, five profiles were executed between 2007 and 2009 at the location of the outfall of th...
To supplement and enrich knowledge of this important Mediterranean area, the project’s main aims are to discover the distribution of the main marine habitats and set up tools for monitoring the state of heritage species, enabling the effects of those protection and management strategies adopted to be judged. Thus, the assignment’s objectives were:...
The Eastern Mediterranean Sea is one of the least studied areas for cetaceans in the Mediterranean Sea. Lack of basic knowledge such as species composition and habitats makes it impossible to develop effective conservation measures. Therefore, in order to determine the species composition, size and distribution of cetacean populations, cetacean sig...
Batroun coastal marine zone – North Lebanon – is subjected to the discharges of two terrestrial sources of contamination, the phosphate plant of Selaata and Al-Jaouz River. In the aim to study their impact on the horizontal variability of sea water characteristics at short spatio-temporal scale, the displacement of water masses was followed under d...
The most active group with respect to substance cycling is aerobic heterotrophic bacteria (AHB) at the euphotic zone in the marine ecosystem. Bacterial composition may differ according to their exposure to environmental factors in the areas from which they are isolated. In this study two cruises were conducted with R/V YUNUS-S and sea water samples...
The levels of indicator and heterotrophic bacteria (HPC) and the frequency of antibiotic resistant bacteria with respect to the areas from which they were isolated were investigated and compared in the sea water samples taken from the coastal area of the Eastern Mediterranean (Turkey, Syria, Lebanon) and the offshore area (Northern Aegean Sea). Whi...
The aim of this research is to study the effect of distance from the coast on the environmental conditions
and phytoplankton populations in the coastal area of North Lebanon. Water samples were collected
monthly at an offshore station (N 34◦ 14,856; E 35◦ 36,067; Z=500 m; distance from the coast= 6.5km)
and inshore one (N 34◦ 15,600; E 35◦ 39,364;...
This study aims to analyse the surface sediment of Batroun coastal area in North Lebanon in order to reveal the integrating impact of Selaata chemical plant on its biological properties. Sediment samples were collected with cores by diving at 12 stations in summer period between mid July and beginning of August 2003. The values of the hydobiologica...
In the aim to estimate the environmental status and to detect the signs of eutrophication in the Lebanese coastal waters using nutrients and chlorophyll-a as indicators, surface water analysis was run monthly for a period of 12 months, from March 2005 till February 2006, along 18 stations that extend from Tripoli in the north, to Naqoura in the sou...
The sediments of twelve coastal stations located in Batroun marine area (North Lebanon, Levantine basin) which is subjected to the impact of Selaata phosphate fertilizers plant were studied horizontally and vertically during summer of 2003. In order to delimit the factory's spatial influence, the distribution of inorganic phosphate in surface sedim...
Immediately after 13th July, 2006, date of the oil spill from the Jieh power plant, the National Center for Marine Sciences (CNSM) - National Council for Scientific Research in Lebanon (CNRS), and in coordination with Ifremer-France, began the rapid assessment plan in order to evaluate the direct impact of pollution by hydrocarbons on the whole mar...
This paper is an attempt at studying the interaction of a seasonal river and the discharges of a major chemical plant in the Batroun region in North Lebanon. Surface water analysis was done monthly for a period of 14 months from May 2001 till June 2002, along 13 stations (10 along the shore and 3 on a horizontal transect from the factory). The rang...
Vertical temperature profiles were recorded from June 1999 to October 2002 (at least once a month) at two Mediterranean sites, in the eastern basin (Batroun, Lebanon; 0–100 m) and in the northwestern basin (Marseilles, France; 0–55 m). At the two sites, the thermal seasonal evolution and the thermocline time dynamics are quite identical. But in the...
Nahr el Bared is one of the main Lebanese coastal rivers. It crosses down a rather deep valley and passes by several urban agglomerations and industrial zones, which use its water as a discharge system of their waste. This study shows the impact of the anthropic activities on the water quality of this river. The application of the diversity and the...
