Lahcen El Youssfi

• PhD in Agro-environment
• Professor (Associate) at Ibn Tofaïl University

Dear Colleagues, Currently, the world is in the middle of a very critical socio-economic, political and environmental crisis. This context is marked by the increasing pressure on natural resources, and a big demand for energy, food and water. Climate variations make the situation more complicated at different levels. In fact, the situation puts mo...

The agriculture sector in Morocco contributes significantly to the economic development of the country; however, this sector faces several challenges. One of these important challenges is the increasing level of salinization in soils and groundwater. This has a strong impact on food security by reducing agricultural yield. The origin of salinizatio...

Investigating habitat selection and ecological factors trade-offs is a major avian ecology topic which is closely implicated for conservation purposes. Studies dealing with the impacts of ecological factors on wintering Spoonbills are overall scarce. Here, we used Principal Component Analyses (PCA) and Generalized Linear Mixed Models (GLMM) to test...

The focus of the conference was on the prevalence of threats to the climate on the one hand and the crises related to biodiversity, water and food security on the other. Not only was the emphasis made on these key factors, but it was also made on the rising global environmental issues/consequences of the degradation of ecosystems. The latter requir...

The AguelmamAzegza lake is located in the Middle Atlas mountain range, this region consists of carbonate rocks of Lias. It is the best-watered and richest region in Morocco in terms of wetlands, especially natural lakes, rivers and fresh springs. The lake's water supply is ensured by the inflows of water in the form of underwater sources fed by pre...

Determining factors affecting habitat selection is a major topic in avian ecology, with implications for conservation purposes. Studies dealing with the impacts of ecological factors on wintering Spoonbills are overall scarce.Here, we used Principal Component Analyses(PCA) and Generalized Linear Mixed Models (GLMM) to testthe relevance of geographi...

A review of the native freshwater fishes of Morocco is presented. This paper is an attempt to describe the current situation of the freshwater species in Morocco using detailed threats analysis and propose conservation measures. The freshwater fish fauna of Morocco is the richest of the Maghreb region and is composed of 69 species belonging to 22 f...

The effects of treated wastewater used for irrigation of amaranth crop were investigated in a filed under semi-arid conditions in Agadir region. This work is a part of a trials series aiming the introduction of amaranth as a new crop in the agronomical system of this region. Three varieties (A0020, A0057 & A211) were tested and irrigated using trea...

The world currently faces significant challenges in its adaptation to and mitigation of climate change in order to provide goods for the growing demand for food, water, and energy—key inputs into a modern society. Today, there is hardy industrial competition for resources that includes agriculture, heavy industry (mining, manufacturing, etc.), fore...

The population of African continent is significantly increasing which has given rise to societal, economic and environmental changes. This will generate an increase in demand for food, water and energy. Thus, strategies for sustainable management of natural resources need to be adopted urgently in order to match the future needs and to ensure susta...

The event attracted an enormous interest from participants which included doctoral students, researchers, professors, practitioners, and professionals translating into a considerable number of participations despite the restrictive conditions of confinement and lockdown. International researchers that took part in the conference were from diverse c...

Globally, climate change is projected to exacerbate water scarcity and increase the recurrence and intensity of droughts. These circumstances call for methodologies that can support the design of sustainable water management policies. Improved irrigation efficiency has been cited as an important way to adapt to climate change. This paper illustrate...

The unforeseeable global crisis of the spread of coronavirus disease 2019 (COVID-19) has caused almost all affected countries to adopt a range of protective measures as recommended by the World Health Organization. However, the speed, type and level of adoption of these protective measures have been remarkably different. Social distancing and quara...

The population of the African continent is significantly increasing which has given rise to societal, economic and environmental changes. This will generate an increase in demand for food, water and energy. Thus, strategies for sustainable management of natural resources need to be adopted urgently in order to match the future needs and to ensure s...

COVID-19 pandemic has had huge impacts on multiple industries and sectors, not just ecotourism and wildlife protection in Morocco. Ecological health and wildlife are a critical resource for the country's tourism sector recovery. Conservation is considered as one of the industries that are hit hard by the COVID-19 pandemic. Many of the threats facin...

The Little bustard Tetrax tetrax is one of the rarest of Morocco's resident breeding birds and one of the country's most endangered bird species. A small population estimated to be less than 10 birds was discovered during 2017 spring when two displaying males were spotted in Adarouch on Morocco's central plateau. This is the first time that the lit...

The focus of the conference was on the prevalence of threats to the climate on the one hand and the crises related to biodiversity, water and food security on the other. Not only was the emphasis made on these key factors, but it was also made on the rising global environmental issues/consequences of the degradation of ecosystems. The latter requir...

Globally, climate change is projected to exacerbate water scarcity and increase the recurrence and intensity of droughts. These circumstances call for methodologies that can support the design of sustainable water management policies. Improved irrigation efficiency has been cited as an important way to adapt to climate change. This paper illustrate...

Climatic factors are of a big importance for the determination of phenological stages of several fruit tree species, including apple, during the pre- and post-blooming periods causing their modifications and consequently affecting the fruit quality and productivity. This study aimed to identify the important dormancy phases (chilling and forcing pe...

One of the crucial and dismissed aspects related to IWRM (integrated water resource management) strategies in Africa and globally especially in regions characterized by a domination of arid and semi-arid climate, is the ethical issue. Thus, even with the adoption of IWRM strategies and development in water resource policy, regulation, law, manageme...

Objectives: The work aims to presents a novel application of mathematical modelling framework that is assesses Socioeconomic impact of climate change on agriculture activities, taking into account the agricultural, socio-economic and hydrology systems. Methods and Novelty: An integrated model disaggregated by type of farms was developed for a pilot...

Food losses and waste is generated in important amounts across the food chain, from production to consumption, imposing serious environmental, social and economic costs. More attention is paid in Morocco to food losses while food waste (FW) is generally overlooked. There are few research activities on this problem in the kingdom. This exploratory s...

Food losses and waste is generated in important amounts across the food chain, from production to consumption, imposing serious environmental, social and economic costs. More attention is paid in Morocco to food losses while food waste (FW) is generally overlooked. There are few research activities on this problem in the kingdom. This exploratory s...

This work is designed to build a tool for analysis and decision support regarding policy on the allocation of the water resource, allowing a better reflection on the issue of water valorization by the agricultural sector. Thus, an integrated model disaggregated by type of farms was developed for Loukkos basin. This model integrates economic, agrono...

Several experiments were conducted in the south of Morocco (IAV-CHA, Agadir) during two seasons 2010 and 2011 in order to evaluate the effect of deficit irrigation with treated wastewater on several crops (quinoa, sweet corn, faba bean and chickpeas). During the first season (2010) three crops were tested, quinoa, chickpeas and sweet corn applying...

Salinity is an ever-increasing problem in agriculture worldwide, especially in the Mediterranean region. Chickpea (Cicer arietinum L.), the third most important food legume grown in the world and Quinoa (Chenopodium quinoa Willd.), new halophytes recently cultivated under Mediterranean region were tested under irrigation water salinity. An experime...

This work was conducted at the experimental station of the IAV Hassan II-CHA-Agadir in southwest Morocco between 2010 and 2012. It aimed to assess the effects of the use of treated wastewater on soil properties and agronomic parameters by adopting crop rotation introducing quinoa (Chenopodium quinoa Willd.) as a new crop under semi-arid climate. Bi...

One of the most important factors which limit crop production is the availability of water. Deficit irrigation is the most important irrigation strategy to increase water use efficiency and crop water productivity, organic amendment combined with deficit irrigation can be practical solution to compensate the negative effect of water deficit through...

The purpose of this work was to study the effect of the irrigation using waste water with various electric conductivities (T (0,92ds/m), EC3 (3ds/m) and EC6 (6ds/m) on three varieties of quinoa cultivated in a field south of Morocco. The follow up of the evolution of the chemical and agronomic parameters throughout the culture made it possible to d...

A soilless closed system experiment was conducted at MAIB greenhouse during the 2008 spring using subirrigation (trough bench system) for growing green bean. The effects of two substrates (peat+perlite and peat+sand 1:3, v/v) and two nutrient solution (NS) concentrations (100% and 50% of the macro-elements concentration normally used for growing th...

Abstract: An experiment was implemented in a filed in the south of Morocco to evaluate the effects of domestic treated wastewater use for irrigation of amaranth crop under semi-arid conditions. Three varieties (A0020, A0057 & A211) were tested and irrigated using domestic treated wastewater EC1 (0,92 dS/m) as control, EC3 (3dS/m) and EC6 (6dS/m) o...

An experiment was implemented in a filed in the south of Morocco to evaluate the effects of domestic treated wastewater use for irrigation of amaranth crop under semi-arid conditions. Three varieties (A0020, A0057 & A211) were tested and irrigated using domestic treated wastewater EC1 (0,92 dS/m) as control, EC3 (3dS/m) and EC6 (6dS/m) obtained by...

Scarcity of water resources and growing competition for water, reduce water availability for irrigation. In this experiment which was carried out in the south of Morocco, treated wastewater was used as an alternative resource for irrigation of quinoa (Chenopodium quinoa Willd.). During the first season (2010), six deficit irrigation treatments were...

The objective of this study was to calibrate and validate the SALTMED model using field data of three growing seasons of quinoa (Chenopodium quinoa Willd.), chickpeas (Cicer arietinum) and sweet corn (Zea mays Saccharata) which were grown in the south of Morocco and subjected to six treatments of deficit irrigation with treated wastewater. The cali...