16 documents found, page 1 of 2
The Influence of Soil and Vegetation on Hydrological Modeling in a Sub-Basin of...
Pereira, Débora; Oliveira, Ana R.; Ramos, Tiago B.; Rollnic, Marcelo; Neves, RamiroThis study analysis the impact of soil hydraulic parameters and canopy storage on hydrological modeling in a sub-basin of Araguaia River, Brazilian Cerrado, using the MOHID Land model. Parameters analyzed included vertical saturated hydraulic conductivity (Ks), saturated water content (Θs), residual water content (Θr), and canopy storage were analyzed for their effects on river discharge. The sensitivity analys...
Water use, soil water balance and soil salinization risks of Mediterranean tree...
Ramos, Tiago B.; Darouich, Hanaa; Oliveira, Ana R.; Farzamian, Mohammad; Monteiro, Tomás; Castanheira, Nádia; Paz, Ana; Alexandre, CarlosSecondary salinization has long been reported in the Roxo irrigation district (RID), southern Portugal, due to the use of saline-prone irrigation water and the existence of poorly structured soils. This study assessed the soil water and salt budgets in nine commercial orchards located in the RID using the multiple ion chemistry module available in the HYDRUS-1D model during the 2019 and 2020 growing seasons. Th...
Assessing the Impact of IrrigaSys Decision Support System on Farmers’ Irrigatio...
Darouich, Hanaa; Simionesei, Lucian; Oliveira, Ana R.; Neves, Ramiro; Ramos, Tiago B.The IrrigaSys decision support system (DSS) has supported farmers’ decision-making regarding irrigation scheduling in the Sorraia Valley irrigation district in Southern Portugal over a span of six years (2017–2022). This study aims to conduct a postevaluation of farmers’ adherence to the DSS, employing a multicriteria analysis (MCA) approach with data from the 2019 (driest year) and 2020 (average year) growing ...
Water use, soil water balance and soil salinization risks of Mediterranean tree...
Ramos, Tiago B.; Darouich, Hanaa; Oliveira, Ana R.; Mohammad, Farzamian; Monteiro, Tomás; Castanheira, Nádia; Paz, Ana; Alexandre, CarlosSecondary salinization has long been reported in the Roxo irrigation district (RID), southern Portugal, due to the use of saline-prone irrigation water and the existence of poorly structured soils. This study assessed the soil water and salt budgets in nine commercial orchards located in the RID using the multiple ion chemistry module available in the HYDRUS-1D model during the 2019 and 2020 growing seasons. Th...
Water use and soil water balance of Mediterranean tree crops assessed with the ...
Ramos, Tiago B.; Darouich, Hanaa; Oliveira, Ana R.; Farzamian, Mohammad; Monteiro, Tomás; Castanheira, Nádia; Paz, Ana; Gonçalves, Maria C.Orchards consist of complex agricultural systems, with a variety of characteristics (planting density, tree height, training system, canopy cover, irrigation method, interrow management) influencing crop evapotranspiration (ETc). Thus, irrigation water management requires finding crop coefficients (Kc) that represent the characteristics of local orchards, evidencing the need for site specific data. The main obj...
Field-scale assessment of soil water dynamics using distributed modeling and el...
Ramos, Tiago B.; Oliveira, Ana R.; Darouich, Hanaa; Gonçalves, Maria C.; Martínez-Moreno, Francisco J.; Rodríguez, Mario Ramos; Vanderlinden, KarlKnowledge of the soil water balance is fundamental for improving crop water use in agricultural fields. Estimates are normally for representative and homogeneous areas where the variability of soil properties is neglected. However, this variability significantly impacts soil water dynamics at the field scale. In this study, the MOHIDLand distributed process-based model was used to compute the spatially explicit...
Exploring the Use of Vegetation Indices for Validating Crop Transpiration Fluxe...
Ramos, Tiago B.; Simionesei, Lucian; Oliveira, Ana R.; Neves, Ramiro; Darouich, HanaaThe success of an irrigation decision support system (DSS) much depends on the reliability of the information provided to farmers. Remote sensing data can expectably help validate that information at the field scale. In this study, the MOHID-Land model, the core engine of the IrrigaSys DSS, was used to simulate the soil water balance in an irrigated vineyard located in southern Portugal during three growing sea...
Soil salinity assessment using vegetation indices derived from Sentinel-2 multi...
Ramos, Tiago B.; Castanheira, Nádia; Oliveira, Ana R.; Paz, Ana Marta; Darouich, Hanaa; Simionesei, Lucian; Farzamian, Mohammad; Gonçalves, Maria C.Lezíria Grande is an important agricultural area in Portugal, prone to waterlogging and salinity problems due to the influence of estuarine tides on groundwater dynamics. Simple, non-invasive, practical approaches are need for monitoring soil salinity in the region and preventing further degradation of soil resources. The objective of this study was to develop regression models for soil salinity assessment in L...
Microplastics presence in cultured and wild-caught cuttlefish, Sepia officinalis
Oliveira, Ana R.; Sardinha-Silva, Andreia; Andrews, Paul L. R.; Green, Dannielle; Cooke, Gavan M.; Hall, Sarah; Blackburn, Kirsty; Sykes, Antonio V.Amongst cephalopods microplastics have been reported only in jumbo squid gut. We investigated microplastics in the digestive system of wild cuttlefish (Sepia officinalis) as they are predators and prey and compared the stomach, caecum/intestine and digestive gland (DG) of wild and cultured animals, exposed to seawater from a comparable source. Fibers were the most common type (approximate to 90% of total count)...
Reversion to developmental pathways underlies rapid arm regeneration in juvenil...
Callaghan, Neal I.; Capaz, Juan Carlos; Lamarre, Simon G.; Bourloutski, Emilie; Oliveira, Ana R.; MacCormack, Tyson J.; Driedzic, William R.Coleoid cephalopods, including the European cuttlefish (Sepia officinalis), possess the remarkable ability to fully regenerate an amputated arm with no apparent fibrosis or loss of function. In model organisms, regeneration usually occurs as the induction of proliferation in differentiated cells. In rare circumstances, regeneration can be the product of naive progenitor cells proliferating and differentiating d...