Soil map of Khnifiss lagoon and its surrounding environment

Amimi, Taha; Elbelrhiti, Kaoutar; Adnani, M.; Elbelrhiti, Hicham; Jiang, Chao; Oubbih, Jamal

doi:10.1007/s12517-021-06932-8

Cited by 5 publications

(3 citation statements)

References 24 publications

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“…The Southern region of Morocco (Laâyoune-Boujdour-Sakia, Al Hamra region), which covers approximately 1 million ha of land suitable for agricultural production, has been affected by different levels of soil salinity [3]. In many North African and Mediterranean countries, agricultural areas have been challenged by high soil salinity (>25 dS•m −1 ), high groundwater salinity (>12 dS•m −1 ), severe drought, no/low rainfall (<50 mm annual rainfall), unavailability of good quality water for irrigation, poor soil fertility (low soil organic carbon), and gradual degradation of soil quality mostly due poor irrigation water quality [4,5].…”

Section: Introductionmentioning

confidence: 99%

Does Phosphorus Fertilization Increase Biomass Production and Salinity Tolerance of Blue Panicum (Panicum antidotale Retz.) in the Salt-Affected Soils of Arid Regions?

et al. 2022

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High soil salinity, drought, and poor soil fertility, especially phosphorus (P) deficiency, are serious challenges for crop production in arid and desert climate regions. In these regions, irrigation water (mostly groundwater) is saline, and fertilization is one of the strategies used to cope with salinity stress. Crop livestock is one of the major agricultural activities in marginal regions, and blue panicum (Panicum antidotale Retz.), the perennial forage grass, has the potential to furnish forage demand. Thus, a field experiment testing the combination of three levels of irrigation water salinity and three P rate was carried out to evaluate the potential of P fertilizer to enhance yield and salinity tolerance of blue panicum grass. The experiment was conducted for two years between 2019 and 2020 in Foum el Oued, Laayoune, Morocco. It was implemented in a split-plot design with three replications considering irrigation water salinity as the main plot and P rates as sub-plot treatments. The evaluated P rates were 0, 90, and 108 kg P2O5 ha−1 (P1, P2, and P3, respectively), and the irrigation water salinities were 5, 12, and 17 dS·m−1. The results revealed that increasing irrigation water salinity significantly decreased the biomass production and stomatal conductance of blue panicum. Increasing irrigation water salinity from 5 to 12 and 17 dS·m−1 decreased fresh biomass production by 20 and 29%, respectively. Irrigation water salinity also decreased (p < 0.05) leaf N, P, K, Ca, and Zn concentration. However, supplementation of P fertilization enhanced (p < 0.05) biomass production and stomatal conductance mainly by improving leaf OM, Zn, and Fe content. P fertilization at 108 kg P2O5 ha−1 increased fresh biomass by 27%, 32%, and 19% under 5, 12, and 17 dS·m−1, respectively. Considering increased fresh biomass yield, P application at the rate of 108 kg P2O5 ha−1 can be suggested for saline drylands. P application is recommended to reduce the adverse effects of high salinity on growth and productivity and improve salinity tolerance of blue panicum in salt-affected arid and desert regions.

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Section: Introductionmentioning

confidence: 99%

Does Phosphorus Fertilization Increase Biomass Production and Salinity Tolerance of Blue Panicum (Panicum antidotale Retz.) in the Salt-Affected Soils of Arid Regions?

et al. 2022

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“…Additionally, small islands have emerged within the lagoon channels, and the Portuguese tower sank into the sands in 2010 (Figures 4B, C), which was visible before that date (Figure 4A). This phenomenon of silting and narrowing of the lagoon was proven by comparing archived aerial photographs with recent satellite images, which revealed the growth of small newborn islands and the filling of slikkes by sediment and dunes inside the lagoon's main and secondary channels, which leads to shoreline changes (Amimi et al, 2021;El Behja et al, 2024). Furthermore, the lagoon experiences a notable decrease in its total water body extent, reflecting the increasing prevalence of sedimentation over erosion and highlighting its vulnerability to progressive closure (El Behja et al, 2024).…”

Section: Salt Mining Activitiesmentioning

confidence: 94%

“…However, 10.3389/feart.2024.1322749 uncontrolled exploitation of salt marshes, coupled with a lack of monitoring, leads to the loss of wetlands containing the optimal conditions for biological life and biodiversity, and the waste products abandoned there can distort the environment (Kennish, 2001). In recent years, KL has experienced a probable decrease in depth (Amimi et al, 2021). Additionally, small islands have emerged within the lagoon channels, and the Portuguese tower sank into the sands in 2010 (Figures 4B, C), which was visible before that date (Figure 4A).…”

Section: Salt Mining Activitiesmentioning

confidence: 98%

Evaluating coastal lagoon sustainability through the driver-pressure-state-impact-response approach: a study of Khenifiss Lagoon, southern Morocco

El Behja,

El M’rini,

Nachite

et al. 2024

Front. Earth Sci.

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Coastal lagoons are valuable ecosystems, providing socioeconomic benefits and supporting human populations and biodiversity. However, these systems face several challenges, making them vulnerable to both natural and human factors. In this study, we apply the Driver-Pressure-State-Impact-Response (DPSIR) Approach to conduct a comprehensive socioeconomic and environmental assessment of the Khenifiss Lagoon to promote sustainable development and support decision-makers. Located on the southern Atlantic coast of Morocco, the lagoon was designated a natural reserve in 1962, a biological reserve in 1983, and a protected wetland under the Ramsar Convention since 1980. This study represents the initial endeavor to conduct a comprehensive global and multidisciplinary environmental assessment of the lagoon by using a wide range of data sources, including relevant publications and reports, satellite images and remote sensing data, field observations, and interviews, all analyzed under the DPSIR framework. Our findings show that both natural and human factors have an impact on the ecosystem. Natural Factors associated with the geomorphological features of the region likely contribute to the silting of the lagoon, possibly intensified by a large shipwreck stuck at its inlet. Meanwhile, human factors encompass population growth (at a rate of 2% per year), tourism, shellfish farming, fishing, shellfish harvesting, and salt extraction. Our results reveal significant changes in the lagoon’s condition in recent years, including a reduction in water body extent, a probable decrease in depth, and an increase in the accumulation of solid waste, plastics, and wastewater in three sectors spanning a total surface area of 464 ha (equivalent to 7% of the lagoon), a substantial expansion of the salt mining area encompassing 368 ha, and a remarkable loss of biodiversity, manifested in declining fish stocks and seabird populations. This study showed that the lagoon is positioned as a potential site for economic growth and serves to alert stakeholders and the local population to the ecosystem’s environmental issues. Based on the findings of this study, we highly recommend regulating human activities within the lagoon, the removal of the wreck at the entrance, proper waste management, community awareness programs, and strict monitoring and enforcement of regulations to protect the environment.

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Assessing the spatiotemporal transformation of a coastal lagoon inlet (1984–2019) using remote sensing and GIS: a study of Khenifiss Lagoon in Southern Morocco

El Behja,

El M’rini,

Nachite

et al. 2024

Environ Earth Sci

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Soil map of Khnifiss lagoon and its surrounding environment

Cited by 5 publications

References 24 publications

Does Phosphorus Fertilization Increase Biomass Production and Salinity Tolerance of Blue Panicum (Panicum antidotale Retz.) in the Salt-Affected Soils of Arid Regions?

Does Phosphorus Fertilization Increase Biomass Production and Salinity Tolerance of Blue Panicum (Panicum antidotale Retz.) in the Salt-Affected Soils of Arid Regions?

Evaluating coastal lagoon sustainability through the driver-pressure-state-impact-response approach: a study of Khenifiss Lagoon, southern Morocco

Assessing the spatiotemporal transformation of a coastal lagoon inlet (1984–2019) using remote sensing and GIS: a study of Khenifiss Lagoon in Southern Morocco

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