Your search found 11 records
1 Benblidia, M.; Margat, J.; VallTe, D. 1997. Water in the Mediterranean region. 2nd ed. Sophia Antipolis, France: Blue Plan for the Mediterranean. Regional Activity Centre. 91p.
(Location: IWMI-HQ Call no: 333.91 GG20 BEN Record No: H029813)
2 Margat, J.; Vallee, D. 2000. Mediterranean vision on water, population and the environment for the 21st century. Sophia Antipolis, France: Blue Plan for GWP. x, 62p.
(Location: IWMI-HQ Call no: 333.91 GG20 MAR Record No: H029814)
(Location: IWMI-HQ Call no: PER Record No: H037689)
(Location: IWMI-HQ Call no: 338.14 G000 AND Record No: H038905)
5 Prinz, D.; Oweis, T.; Oberle, A. 1998. Remote sensing for rainwater harvesting in Mediterranean agriculture. In Pereira, L. S.; Gowing, J. W. (Eds.). Water and the environment: Innovation issues in irrigation and drainage: Selected papers of the 1st Inter-Regional Conference “Environment-Water: Innovative Issues in Irrigation and Drainage,” Lisbon, Portugal, Sept. 1998. London, UK: E & FN Spon. pp.340-347.
(Location: IWMI-HQ Call no: 631.7.1 G000 PER Record No: H039045)
(Location: IWMI HQ Call no: 363.34 G000 ISM Record No: H046897)
(0.51 MB)
(Location: IWMI HQ Call no: e-copy only Record No: H047499)
(1.01 MB)
The use of treated wastewater (WW) for irrigation is a common practice, especially in arid and semiarid agroecosystems. We aimed to evaluate the influence of long-term (up to 45 years) irrigation with WW on the soil microbial community structure, microbial activity and physicochemical properties, in comparison with soil irrigated with fresh water (FW), in a semiarid orange-tree orchard. Phospholipid fatty acid (PLFA) analysis was used to assess the shifts in the soil microbial community in response to the application of WW. Total organic carbon and available P increased significantly, by about 49% and 37%, respectively, due to WW irrigation. The urease, -glucosidase, alkaline phosphatase and dehydrogenase activities and aggregate stability were higher in the soil irrigated with WW than in that irrigated with FW. The PLFA analysis showed a significant increase in bacterial abundance, particularly in G+ bacteria. The relative abundances of fungi, G- bacteria and actinobacteria were similar in the two soils. Principal components analysis of the PLFAs showed discrimination between the FW-irrigated soil and the WW-irrigated soil, which was enriched in actinobacterial PLFA 10Me18:0. The prolonged use of treated WW for irrigation in a semiarid agroecosystem promoted the establishment of a specific and persistent microbial community that was functionally more active.
(Location: IWMI HQ Call no: e-copy only Record No: H047630)
(0.70 MB)
Water scarcity and increasing demand coupled with climate change require maximizing the use of available resources. Water harvesting (WH) systems are currently being used in many areas to sustain crops and increase water productivity. This study investigated the effect of three treatments (S15: 50-m2 catchment area with 15% slope, S8: 50-m2 catchment area with 8% slope, and L8: 70-m2 catchment area with 8% slope) on the amount of water harvested in tree basin for young olive (Olea europaea L.) trees from November 2002 to July 2003. Soil moisture was monitored weekly during the rainy season and bi-weekly afterwards. To determine moisture changes in the catchment and target areas and amount of water harvested (in liters) for each tree, volumetric soil moisture content was measured at three or four points along the slope using a neutron probe down to a maximum depth of 120 cm, as soil depth allowed. WH structures increased soil moisture content in the rootzone compared to the catchment area. The rainfall threshold for runoff generation was less than 15 mm. Land slope was more important than micro-catchment size for increasing the amount of water harvested. Compared to the 8% slope, the 15% slope resulted in larger harvested amounts for small storms, but the two were comparable when storms were large. The large micro-catchment size resulted in higher amounts of harvested water only in the presence of storms greater than 26 mm. After adding the amounts lost by evapotranspiration, the net amount of water harvested in the tree basin of each tree for the 2002–2003 rainy season reached 722 and 688 l (or 361 and 344 mm) for treatments S15 and S8, respectively. Deeper soil profiles (i.e., >90 cm) were important to ensure longer storage periods. By early July, soil moisture content in the tree basin for treatments S15, L8 and S8 was still higher by 38, 13, and 5% respectively, than the levels recorded at the onset of the experiment. WH increased soil moisture content during the spring and early summer, a critical period for olive production.
(Location: IWMI HQ Call no: e-copy only Record No: H051521)
(7.43 MB)
Water is crucial for economic development since it interacts with the agricultural, production, and energy sectors. However, the increasing demand and climate change put pressure on water sources. This paper argued the necessity of using reclaimed water for irrigation within the scope of a circular economy. The barriers (i.e., technological and economic, institutional/regulatory, and social) to water reuse practices were revealed. Lessons on how to overcome the barriers were learned from good practices. The roadmaps adopted in the European Union for the transition towards the circular economy were reviewed. It has been observed that these roadmaps are generally on the circularity of solid wastes. However, water is too important for the economy to be ignored in the transition towards circular economy. Research needs and perspective for a comprehensive roadmap to widen water-smart solutions such as water reuse were drawn.
(Location: IWMI HQ Call no: e-copy only Record No: H051697)
(1.48 MB) (1.48 MB)
Mediterranean wetlands provide many ecosystem services to humans and other organisms. However, these services are being increasingly damaged. The prioritization of ecosystem services is essential to start a decision-making process focused on environmental policies, highlighting the necessity of equilibrium between sustainability and human well-being. This study analyzes the similarities and differences among the ecosystem services provided by the Spanish RAMSAR Mediterranean wetlands, where rice production is the main economic activity. These areas are the Ebro Delta, the Albufera Natural Park and the Guadalquivir Marshes (Doñana Biosphere Reserve). Despite being different areas, environmental and agricultural policies sometimes treat their characteristics without distinction since they are conceptually englobed in the same category. This analysis aims to study whether geographical and sociocultural factors could influence the prioritization of ecosystem services. The prioritization of the three study areas was conducted using the Analytic Network Process (ANP), a multi-criteria decision-making method which allows decision-makers to manage the ecosystem's complexity. The results are helpful for future policies and in understanding the complex network of interconnections among ecosystem services. Additionally, results show that there are statistically significant differences in priorities among the three study areas due to geographical and cultural reasons. Moreover, results have also shown that decision-makers' judgements influenced the priorities depending on their background and personal or professional preferences. It emphasizes the necessity of implementing environmental policies from a theoretical and global scale to a participatory and local one, considering a broader range of stakeholders' perceptions to reflect the complexity of the ecosystem services network.
11 Ramat, G.; Santi, E.; Paloscia, S.; Fontanelli, G.; Pettinato, S.; Santurri, L.; Souissi, N.; Da Ponte, E.; Wahab, M. M. A.; Khalil, A. A.; Essa, Y. H.; Ouessar, M.; Dhaou, H.; Sghaier, A.; Hachani, A.; Kassouk, Z.; Chabaane, Z. L. 2023. Remote sensing techniques for water management and climate change monitoring in drought areas: case studies in Egypt and Tunisia. European Journal of Remote Sensing, 56(1):2157335. [doi: https://doi.org/10.1080/22797254.2022.2157335]
(Location: IWMI HQ Call no: e-copy only Record No: H052192)
(25.90 MB) (25.9 MB)
This study focused on monitoring the water status of vegetation and soil by exploiting the synergy of optical and microwave satellite data with the aim of improving the knowledge of water cycle in cultivated lands in Egyptian Delta and Tunisian areas. Environmental analysis approaches based on optical and synthetic aperture radar data were carried out to set up the basis for future implementation of practical and cost-effective methods for sustainable water use in agriculture. Long-term behaviors of vegetation indices were thus analyzed between 2000 and 2018. By using SAR data from Sentinel-1, an Artificial Neural Network-based algorithm was implemented for estimating soil moisture and monthly maps for 2018 have been generated to be compared with information derived from optical indices. Moreover, a novel drought severity index was developed and applied to available data. The index was obtained by combining vegetation soil difference index, derived from optical data, and soil moisture content derived from SAR data. The proposed index was found capable of complementing optical and microwave sensitivity to drought-related parameters, although ground data are missing for correctly validating the results, by capturing drought patterns and their temporal evolution better than indices based only on microwave or optical data.
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