Modeling soil water and salinity dynamics in mangrove swamp rice production system of Guinea Bissau, West Africa
Mangrove swamp rice production (MSRP) is of fundamental importance for the livelihoods, food security, and nutritional well-being of coastal populations in West Africa. However, this system faces increasing challenges due to its reliance on sufficient and well-distributed rainfall to maintain feasib...
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Elsevier
2025-05-01
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| Series: | Agricultural Water Management |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0378377425002082 |
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| author | Gabriel Garbanzo Maria do Rosário Cameira Paula Paredes Marina Temudo Tiago B. Ramos |
| author_facet | Gabriel Garbanzo Maria do Rosário Cameira Paula Paredes Marina Temudo Tiago B. Ramos |
| author_sort | Gabriel Garbanzo |
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| description | Mangrove swamp rice production (MSRP) is of fundamental importance for the livelihoods, food security, and nutritional well-being of coastal populations in West Africa. However, this system faces increasing challenges due to its reliance on sufficient and well-distributed rainfall to maintain feasible soil salinity levels for rice production during the growing season. This study examines the dynamics of soil water and salts using field observations collected from four different MSRP fields in Guinea-Bissau during two growing seasons, along with simulations using the HYDRUS-1D model. Several rainfall and groundwater depth scenarios were also considered to identify the key factors contributing to soil salinity at the study sites. The results helped identify the main factors influencing soil salinity during the study period and estimate the potential impacts on crop yields, with could decline by up to 60 %. Key factors influencing soil salinity included the amount and distribution of seasonal rainfall, groundwater depth, and groundwater quality. The analysis of modeled scenarios also provided insights into effective management strategies for coping with soil salinization, particularly by assessing: a) where and when more productive, long-cycle rice varieties can still be cultivated; b) where salt-tolerant rice varieties have to be chosen. Additionally, the results reinforce the need for the regular maintenance of dikes and other drainage structures to avoid brackish water entrance and guaranty minimum rice growth conditions. Future research will explore adopting this practice in field with modern water management, with the model enabling precise analysis of impact on sustainability. |
| format | Article |
| id | doaj-art-85621f14417944169e2ae660e78a1497 |
| institution | DOAJ |
| issn | 1873-2283 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Elsevier |
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| series | Agricultural Water Management |
| spelling | doaj-art-85621f14417944169e2ae660e78a14972025-08-20T02:57:05ZengElsevierAgricultural Water Management1873-22832025-05-0131310949410.1016/j.agwat.2025.109494Modeling soil water and salinity dynamics in mangrove swamp rice production system of Guinea Bissau, West AfricaGabriel Garbanzo0Maria do Rosário Cameira1Paula Paredes2Marina Temudo3Tiago B. Ramos4Center for Crop System Analysis, Wageningen University and Research, P.O. Box 47, Wageningen 6700 AA, the Netherlands; LEAF-Linking Landscape, Environment, Agriculture and Food Research Center, Associate Laboratory TERRA, School of Agriculture, University of Lisbon, Tapada da Ajuda, Lisboa 1349-017, Portugal; Soil and Foliar Laboratory, Agronomic Research Center, School of Agriculture, University of Costa Rica, San José 11501–2060, Costa Rica; Corresponding author at: Center for Crop System Analysis, Wageningen University and Research, P.O. Box 47, Wageningen 6700 AA, the Netherlands.LEAF-Linking Landscape, Environment, Agriculture and Food Research Center, Associate Laboratory TERRA, School of Agriculture, University of Lisbon, Tapada da Ajuda, Lisboa 1349-017, PortugalLEAF-Linking Landscape, Environment, Agriculture and Food Research Center, Associate Laboratory TERRA, School of Agriculture, University of Lisbon, Tapada da Ajuda, Lisboa 1349-017, PortugalForest Research Center (CEF), Instituto Superior de Agronomia, Universidade de Lisboa, Tapada da Ajuda, Lisboa 1349-017, PortugalCentro de Ciência e Tecnologia do Ambiente e do Mar (MARETEC-LARSyS), Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1, Lisboa 1049-001, PortugalMangrove swamp rice production (MSRP) is of fundamental importance for the livelihoods, food security, and nutritional well-being of coastal populations in West Africa. However, this system faces increasing challenges due to its reliance on sufficient and well-distributed rainfall to maintain feasible soil salinity levels for rice production during the growing season. This study examines the dynamics of soil water and salts using field observations collected from four different MSRP fields in Guinea-Bissau during two growing seasons, along with simulations using the HYDRUS-1D model. Several rainfall and groundwater depth scenarios were also considered to identify the key factors contributing to soil salinity at the study sites. The results helped identify the main factors influencing soil salinity during the study period and estimate the potential impacts on crop yields, with could decline by up to 60 %. Key factors influencing soil salinity included the amount and distribution of seasonal rainfall, groundwater depth, and groundwater quality. The analysis of modeled scenarios also provided insights into effective management strategies for coping with soil salinization, particularly by assessing: a) where and when more productive, long-cycle rice varieties can still be cultivated; b) where salt-tolerant rice varieties have to be chosen. Additionally, the results reinforce the need for the regular maintenance of dikes and other drainage structures to avoid brackish water entrance and guaranty minimum rice growth conditions. Future research will explore adopting this practice in field with modern water management, with the model enabling precise analysis of impact on sustainability.http://www.sciencedirect.com/science/article/pii/S0378377425002082HYDRUS-1DOptimal Growing PeriodRainfall VariabilityGroundwater DepthSalinity StressSalt-free period |
| spellingShingle | Gabriel Garbanzo Maria do Rosário Cameira Paula Paredes Marina Temudo Tiago B. Ramos Modeling soil water and salinity dynamics in mangrove swamp rice production system of Guinea Bissau, West Africa Agricultural Water Management HYDRUS-1D Optimal Growing Period Rainfall Variability Groundwater Depth Salinity Stress Salt-free period |
| title | Modeling soil water and salinity dynamics in mangrove swamp rice production system of Guinea Bissau, West Africa |
| title_full | Modeling soil water and salinity dynamics in mangrove swamp rice production system of Guinea Bissau, West Africa |
| title_fullStr | Modeling soil water and salinity dynamics in mangrove swamp rice production system of Guinea Bissau, West Africa |
| title_full_unstemmed | Modeling soil water and salinity dynamics in mangrove swamp rice production system of Guinea Bissau, West Africa |
| title_short | Modeling soil water and salinity dynamics in mangrove swamp rice production system of Guinea Bissau, West Africa |
| title_sort | modeling soil water and salinity dynamics in mangrove swamp rice production system of guinea bissau west africa |
| topic | HYDRUS-1D Optimal Growing Period Rainfall Variability Groundwater Depth Salinity Stress Salt-free period |
| url | http://www.sciencedirect.com/science/article/pii/S0378377425002082 |
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