Karima Khalil

Karima Khalil
Cadi Ayyad University/Ecole Supérieure de Technologie Essaouira

PhD
Professor

About

79
Publications
21,936
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Introduction
Professor at Cadi Ayyad University, School of Technology in Essaouira, Morocco. Research interests are: - Modeling of biogeochemical processes in coastal and marine environments - Marine Protected Area and fisheries - Greenhouse gas emissions from soil and water - Continent Ocean transfer and climate change impact. - Secretary of African chapter of International Society of Ecological Modelling 2018-2022 - Thematic Expert Group member of Global Marine Spatial Planning (UNESCO-IOC) since 2020

Publications

Publications (79)
Article
Coastal areas are a noteworthy source of commercial and economic fortunes for surrounding municipalities throughout the Moroccan Atlantic coast. Thus, a deep knowledge of local hydrodynamics and environmental processes associated is integral to effective coastal management. 3D hydrodynamic model that includes a Lagrangian particle simulation can pa...
Article
Full-text available
The population dynamics of small and middle-sized pelagic fish are subject to considerable interannual and interdecadal fluctuations in response to fishing pressure and natural factors. However, the impact of environmental forcing on these stocks is not well documented. The Moroccan Atlantic coast is characterized by high environmental variability...
Preprint
Full-text available
The high exploitation of marine fisheries resources for their economic value along with climate change in recent decades is threatening the regeneration of these resources. Available data on the state of fish stocks and the trophic organization and functioning of these aquatic environments are currently in insufficient. Considering this situation,...
Article
Full-text available
Microphytoplankton and environmental parameters were monitored and analyzed bimonthly (twice a month) over an annual cycle (June 2011 to May 2012) at six stations in Oualidia lagoon. The present study is conducted to assess the relationship between physicochemical parameters and microphytoplankton assemblages, which can serve as a method to assess...
Article
Although the environmental status of the Moroccan Atlantic coastal waters has been researched in previous studies, there is still a lack of knowledge about its biogeochemical functioning. Especially for the Agadir coast where measurements are quite scarce, realistic ecological models can help identifying the key mechanisms driving fluctuations in s...
Chapter
Full-text available
The Mediterranean Sea is oligotrophic due to its paucity in nutrients especially phosphorus. As a consequence, riverine fluxes at its boundaries and the controlling processes at the river–sea connection are of prime importance to understand P cycling in this oligotrophic sea. The Rhône River delta is characterized by intense loads of terrestrial an...
Chapter
The aim of this study was to explore the research trends and the evolution of publication literature covering the scientific work published in the the Moroccan Atlantic coast during the period 1941–2018. We presented the findings of a study which provides a systematic analysis of the content of 9 books, 10 reviews, 28 conference papers, 67 reports,...
Chapter
Fishing is predominantly recognized as one of the activities vigorously impacting ecosystems. Our marine protected area (MPA) Mogador is located between Safi and Essaouira on the Moroccan Atlantic coast. This MPA represents one of the tools for regulation and management of fisheries. The aim of this work is to better identify the MPA role in manage...
Chapter
Monitoring and a better understanding of the water resources are necessary to anticipate and develop measures to adapt to climate and water use changes. Therefore, we focused on the study of biogeochemical processes in the water body. We simulated the seasonal variability of nutrients, phytoplankton and zooplankton in a Moroccan shallow reservoir (...
Book
Full-text available
Marine/Maritime Spatial Planning (MSP) for sustainable ocean governance requires a range of knowledge and data from different sectors and the environment to ensure plans are inclusive and robust, yet flexible enough to incorporate changes in ecosystems and socio-economic drivers. Determining the existing and possible future conditions in the marine...
Article
Full-text available
The Mediterranean Sea (MS) is a large oligotrophic sea whose productivity is sensitive to riverine nutrient inputs. More specifically, phosphorus (P) river supply is crucial for the MS, with an important role of the estuarine/deltaic filter especially for the storage and recycling in sediments. A benthic dataset from the Rhône River prodelta was us...
Article
Full-text available
The purpose of the study was to assess the water quality in the Sidi Abderrahmane freshwater reservoir (Safi, Morocco). The monitoring data used in the study included physical, chemical, and biological characteristics. The spatial and temporal characteristics of these parameters was evaluated by collecting water samples fortnightly from May 2011 to...
Data
The sampling cruise MissRhoDia was carried out aboard the RV Tethys II in May 2018. Nine stations were sampled between 2 and 18 km from the Rhône river mouth, in the proximal (stations A, Z and AZ), prodelta (stations AK, K, B and L) and distal (stations C and E) domains over a southwest transect, corresponding to the direction of the river plume....
Conference Paper
Full-text available
The aim of this study was to explore the research trends and the evolution of publications literature covering the scientific work published in Moroccan Atlantic coast during the period 1941-2018. We presented the findings of a study which provides a systematic analysis of the content of 9 books, 10 12 reviews, 28 conference papers, 67 reports, 73...
Conference Paper
Full-text available
The Mediterranean Sea is oligotrophic due to its paucity in nutrient especially phosphorus. As a consequence, riverine fluxes at its boundaries and the controlling processes at the river-sea connection are of prime importance to understand P cycling in this oligotrophic sea. The Rhône river delta is characterized by intense loads of terrestrial and...
Conference Paper
Full-text available
Monitoring and a better understanding of the water resources are necessary to anticipate and develop measures to adapt to climate and water use changes. Therefore, we focus our study on biogeochemical processes in the waterbody. In this paper, we simulated the seasonal variability of nutrients, phytoplankton and zooplankton in Moroccan shallow rese...
Conference Paper
Full-text available
Currently, it is recognized that fishing is one of the activities having a strong impact on ecosystems. Our marine protected area (MPA) Mogador is located between Safi and Essaouira on the Moroccan Atlantic coast. This MPA represents one of the tools for regulation and management of fisheries. The aim of this work is to better identify the MPA role...
Conference Paper
The aim of this study was to explore the research trends and the evolution of publications literature covering the scientific work published in Moroccan Atlantic coast during the period 1941-2018. We presented the findings of a study which provides a systematic analysis of the content of 9 books, 10 reviews, 28 conference papers, 67 reports, 73 the...
Conference Paper
Full-text available
Currently, it is recognized that fishing is one of the activities having a strong impact on ecosystems. Our marine protected area (MPA) Mogador is located between Safi and Essaouira on the Moroccan Atlantic coast. This MPA represents one of the tools for regulation and management of fisheries. The aim of this work is to better identify the MPA role...
Article
Full-text available
The Moroccan Atlantic coast is considered as one of the richest fishing areas in the world, having rich biodiversity, and supporting the fisheries sector. However, studies have shown that the ecosystem presently suffers from overexploitation of fishery resources and environmental degradation. To quantify these impacts, the characterization of the e...
Conference Paper
Full-text available
The International Society for Ecological Modelling (ISEM) promotes the international exchange of ideas, scientific results, and general knowledge in the areas of systems’ analysis and simulations in ecology and application of ecological modelling for natural resource management. The Society was formed in Denmark in 1975, and today has chapters in E...
Conference Paper
Full-text available
It is a pleasure to welcome all of you to the third Mediterranean Seagrass Workshop (MSW12)! Thanks to the dedication of a large group of scientists and institutions, and particularly those that hosted the three editions of the MSW, this workshop continues to bring together seagrass experts, scientists, government agencies and NGOs, to discuss curr...
Data
The deadline for submitting abstracts for oral and poster presentations at the ISEM 2019 Global Conference is fast approaching. Please submit your abstracts by April 8, 2019, at the Conference website using the online abstract submission system. https://www.elsevier.com/events/conferences/international-society-for-ecological-modelling-global-confe...
Poster
Full-text available
Representation of the trophic organization of Mogador MPA (Morocco, Atlantic) using the Ecopath model (D. Pauly, V. Christensen, 1992). Identification of indicators (Keystoneness, connectance, omnivory…) of trophic organization at the ecosystem scale.
Article
Full-text available
A review of the existing Moroccan reservoirs studies (number and fields studies) was done to help reveal the strategy used in accordance with the actual challenges. Three major scientific search tool (Scopus, Science Direct and ResearchGate) were used with keywords in English and French (e. g. "Moroccan reservoir", "nutrients", "freshwater", "water...
Chapter
Full-text available
Lagoons are highly productive areas situated in the transitional regions at the land-ocean boundary. They are important to mankind because many industrial, commercial, and recreational activities are concentrated in these regions.
Chapter
Full-text available
Moroccan marine areas are characterized by important fishery richness, whether at the level of the Mediterranean Sea frontage or at the level of the Atlantic. It plays an important role in the economy through its fishery, which in 2014 generated 8 billion dirham’s or 2–3% of the national GDP.
Chapter
Estuaries are important nutrient filters along the land-ocean continuum. However, the role of benthic diagenesis is still poorly quantified. Estuarine sediments are important environments regulating carbon, nutrient, metal, and sulfur fluxes.
Poster
Full-text available
In order to protect and conserve the marine resources, an understanding of the functioning of the Moroccan Atlantic ecosystems is essential, as most of the world's marine stocks are under extinction of certain species. In this context Morocco needs to develop management strategies, both to help decisions and thus allow the re-balancing resource and...
Article
Full-text available
In order to find effective measures to control a Moroccan shallow reservoir (Sidi Abderrahmane), a better understanding of phytoplankton composition, abundance, spatial and temporal distribution it is necessary. Trophic level and the stability status were assessed upon the basis of Shannon diversity index (H′), species richness (S), and evenness (J...
Presentation
Carbon and Nitrogen cycling in estuarine sediments: experiment and modelling. Comparison between simulated and observed nitrate reduction rates.
Article
Full-text available
The nutrient cycle in Oualidia lagoon, on the Atlantic Moroccan coast, was studied at both spatial and temporal scales, covering spring and summer conditions. Water samples were collected bimonthly at high tide from March to August during years 2011 and 2012 at six stations distributed throughout the lagoon. The physico-chemistry (temperature, sali...
Presentation
Bioirrigation effect on organic matter transport in estuarine sediments.
Article
Full-text available
The spatio-temporal variability of the mircophytoplankton community was investigated in the Oualidia lagoon (Atlantic-Morocco). Microphytoplankton structure, composition and distribution were analyzed at six sampling stations during an annual cycle (from June 2011 to May 2012), based on phytoplankton net and bottle samples. A total of 126 taxa belo...
Poster
Spatial and temporal organic matter recycling in Elorn and Aulne estuarine sediments
Article
Full-text available
Modelling nutrient cycle dynamics in the open ocean based on the wellknown interactions among nutrients, phytoplankton, and zooplankton is well established and will be used in this work. Difficulty arises in applying this methodology to multiple coastal systems because of differences among geography, water chemistry, microbial interactions, weather...
Presentation
Diagenetic modelling of organic matter recycling in temperate eutrophicated estuaries.
Poster
Full-text available
Oualidia lagoon is a very important area of the Atlantic coast, which has been under an increasing anthropogenic pressure for several decades and, contributes to the degradation of the lagoon’s water quality. An descriptif model is developed to study the variation of the nutrients concentration in the water surface throughout the Oualidia lagoon (M...
Article
Full-text available
Seagrasses play a prominent ecological role and support the productivity on which many communities of marine animals feed and reproduce but, unlike their macroalgae and microalgae counterparts, their diversity and extent have never been rigorously documented in Moroccan coasts. In this study we compiled and analyzed the available bibliographic data...
Article
Full-text available
This work focuses on the water column biogeochemical cycle of the Oualidia lagoon (Moroccan Atlantic coast). The study of the biogeochemical cycle requires the evaluation of nutrients distribution, the factors controlling this process and their influence on different compartments of the lagoon environment. Water samples were collected fortnightly f...
Article
Full-text available
The recent establishment of procedures to improve the water quality of lakes (Nador, Moulay Bousselham Sidi Moussa, Oualidia and Khnifiss) (Scheme Development and Water Management) led us to conduct areview of the literature on these lagoons phase, necessary Zainab Damsiri ScienceLib Editions Mersenne : Volume 6 , N ° 140701 ISSN 2111-4706 phase an...
Poster
Organic matter oxidation in temperate estuarine sediments Comparison between experiments and modelling.
Article
Full-text available
Phytoplankton community in the coastal waters of Oualidia lagoon was characterized from June 2011 to May 2012. Taxonomic composition, abundance and diversity index were determined at six sample sites. A total of 127 species of phytoplankton belonging to two groups viz. bacillariophyceae (81 species) and dinophyceae (46 species) were reported from t...
Data
Full-text available
Phytoplankton community in the coastal waters of Oualidia lagoon was characterized from June 2011 to May 2012. Taxonomic composition, abundance and diversity index were determined at six sample sites. A total of 127 species of phytoplankton belonging to two groups viz. bacillariophyceae (81 species) and dinophyceae (46 species) were reported from t...
Conference Paper
Full-text available
Monitoring and a better understanding of the water resources are necessary to anticipate and develop measures to adapt to climate and water use changes. Therefore, we focus our study on biogeochemical processes in the waterbody. In this paper, we simulated the seasonal variability of nutrients, phytoplankton and zooplankton in Moroccan shallow rese...
Poster
4ème édition du congrès international : Eau, Déchets et Environnement. Agadir, 18- 20 Décembre 2013
Poster
Full-text available
Les lagunes sont des milieux de transition entre les océans et les continents et sont souvent soumises à un hydrodynamisme complexe. Notre étude qui traite la comparaison des des paramètres physico-chimiques (Température et salinité) et les éléments nutritifs (Phosphate et nitrite) à marée haute au niveau de trois lagunes marocaines (Nador, Oualidi...
Article
Full-text available
This paper deals with the spatial and seasonal recycling of organic matter in sediments of two temperate small estuaries (Elorn and Aulne, France). The spatio-temporal distribution of oxygen, nutrient and metal concentrations as well as the organic carbon and nitrogen contents in surficial sediments were determined and diffusive oxygen fluxes were...
Poster
Full-text available
This study we represent biogeochimical cycle of the water column of the Oualidia Lagoon (Moroccan Atlantic coastline). Water samples were collected from March 2011 until August 2011, at six stations distributed throughout the Oualidia lagoon. The results of physico-chemical parameters measured (temperature, salinity, dissolved oxygen, conductivity...
Article
Full-text available
The European Regional Seas Ecosystem Model (ERSEM) coupled to the Princeton Ocean Model (POM) one-dimensional physical model was applied to the first results of the pluridisciplinary biogeochemical data set acquired in the North Sea during four cruises carried out from 2000 to 2001. We introduced a CO2 submodel in ERSEM and we focused on simulation...
Poster
Full-text available
The Oualidia lagoon is one of the most perturbed parts of the Moroccan Atlantic Ocean due to the nutrient discharges. To contribute to the understanding of eutrophication trends in this lagoon a machine learning tool for induction of models in form of regression trees and in form of set of rules was applied on a data set comprising chemical and bio...
Presentation
Modélisation des nutriments (Azote et phosphore) Modélisation du phytoplancton
Poster
Full-text available
Ce travail porte sur l’étude de cycle biogéochimique de la colonne d’eau de la lagune Oualidia (côte Atlantique, Maroc). L’étude du cycle biogéochimique nécessite l’évaluation de la distribution des éléments nutritifs, les facteurs qui les contrôlent, leurs influencent sur les différents compartiments du milieu lagunaire. Des échantillons d’eau on...
Presentation
Application of flexible environment for mathematically modelling the environment (FEMME) Modelling the biogeochemical processes of organic matter in sediments
Presentation
- Modélisation numérique du recyclage de la matière organique dans les sédiments marins - Comparaison avec les données
Poster
Full-text available
Le lac réservoir Lalla Takerkoust est un hydrosystème complexe fragile et sans cesse sujet à des phénomènes d’envasement, d’eutrophisation et des blooms à cyanobactéries. Pour optimiser la gestion et prévoir l’évolution de cet écosystème on a fait appel à la modélisation afin d’établir un modèle prédictif à long terme.
Presentation
La modélisation numérique peut-elle répondre aux problématiques environnementales?
Article
Full-text available
The processes controlling preservation and recycling of particulate biogenic silica in sediments must be understood in order to calculate oceanic silica mass balances. The new contribution of this work is the coupled use of advanced models including reprecipitation and different phases of biogenic silica with different dissolution characteristics a...