CIM2-Artigos (em revistas ou actas indexadas)
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- Digital twin modelling for a renewable energy community: a case study of the culatra island’s smart gridPublication . Ogunsola, Idris Olalekan; Santos, Joni; Monteiro, Jânio; Pacheco, AndréThis study develops and tests a Digital Twin (DT) of the Culatra Island’s distribution grid to enable the evaluation of demand side management strategies, in the scope of Renewable Energy Communities. Built in MATLAB/Simulink and structured across five functional layers, the DT integrates real-world data from five photovoltaic (PV) production units, monitored and fixed electrical loads, and realistic network parameters derived from the island’s infrastructure. Three steady-state test scenarios were simulated to assess voltage stability, and power flow under: 1) baseline grid operation without PV generation, 2) distributed PV integration under normal load conditions, and 3) high-demand operation near generationload equilibrium. Results show that PV integration improves voltage regulation and reduces losses through localized energy injection and bidirectional power flow. However, under peak load conditions, the system exhibits significant undervoltage, revealing the need for advanced control strategies and infrastructure reinforcement. Overall, the DT proves to be an effective analytical and decision-support tool for optimising distributed energy systems. This work provides a replicable application-oriented framework for data-driven planning in emerging Renewable Energy Communities and supports Culatra Island’s transition toward full energy self-sufficiency. Unlike prior studies that report generalized benefits of PV integration, this work explicitly identifies voltage instability thresholds under high-demand conditions in a real REC configuration, providing actionable insight into when passive operation becomes insufficient.
- The early and middle jurassic palynostratigraphy of the lusitanian basin (Portugal) in a proto-atlantic contextPublication . Correia, V.; Pereira, Z.; Riding, J.B.; Duarte, L.V.; Henriques, M.H.; Fernandes, PauloPalynomorphs, especially dinoflagellate cysts, are important biostratigraphical and palaeoenvironmental tools and their study can be applied to the Lusitanian Basin of Portugal. A palynostratigraphical high-resolution survey was undertaken in eight Lower and Middle Jurassic (upper Sinemurian to lowermost Bathonian) sections from the Lusitanian Basin. We present the resulting biostratigraphical scheme comprising the most significant palynomorph bioevents for this interval.
- Girogonitos de carofitas en el Parque Nacional de Doñana: Su registro en sedimentos pleistocenos y holocenosPublication . Muñoz, Adolfo M.; Ruiz, Francisco; Guerra, Liliana; Veiga-Pires, Cristina; Toscano, Antonio; González-Regalado, María Luz; Abad, Manuel; Rodríguez Vidal, Joaquín; Cáceres, Luis Miguel; Izquierdo, Tatiana; Carretero, María Isabel; Pozo, Manuel; Monge, Guadalupe; Tosquella, Josep; Gómez, Paula; Romero, Verónica; Arroyo, MartaGirogonitos de carofitas en el Parque Nacional de Doñana: Su registro en sedimentos pleistocenos y holocenos Las caráceas constituyen un grupo importante de macrófitos acuáticos en el Parque Nacional de Doñana. En este artículo, se estudia la distribución de sus girogonitos en diversos medios de este espacio protegido (lagunas temporales, surgencias, caños, márgenes del río Guadalquivir, etc), relacionándola tanto con las variables físico-químicas como con la textura y mineralogía del sedimento. Se efectúa una revisión del registro geológico de este grupo en diversos testigos compuestos por sedimentos pleistocenos y holocenos.
- Integrating remote sensing and covernance strategies for sustainable coastal and marine managementPublication . Taveira-Pinto, F.; Carrasco, A. R.; Rosa-Santos, P.; Bento, A. M.; Fazeres-Ferradosa, T.Marine and coastal areas can now be effectively monitored through remote sensing techniques, which not only facilitate the analysis of vast regions but also enable tracking their changes and trajectories over time. The research presented in this issue offers practical examples, including the use of satellite imagery for monitoring coastal erosion and tracking oil spills. Additionally, two other notable studies focus on diagnosing marine and coastal challenges, specifically related to marine pollution and ocean governance. By using remote Sensing tools, Rodrigues do Nascimento et al. (2025) analyze the degradation of beach features along the coastline of Maceió, Brazil, identifying potential risk points and levels of vulnerability associated with erosion and degradation processes using remote sensing tools. To assess the dynamics of Maceió’s shoreline, the study employed the open-source software Coastal Analyst System from Space Imagery Engine, by using Sentinel-2 imagery (Rodrigues do Nascimento et al., 2025). The adopted methods enabled the accurate identification of vulnerabilities, including erosion hotspots across the studied beaches, as well as the recommendation of mitigation measures aimed at promoting sustainable coastal management.
- Effects of planting density and soil management on pitaya (S. undatus) yield in an outdoor plantationPublication . Trindade, Ana Rita; Matias, Pedro; Zarcos Duarte, Beatriz; Trindade, D.; Duarte, AmilcarIn regions with advanced pitaya (Selenicereus spp.) cultivation, the crop is popular due to its rapid production cycle and favourable fruit prices. The Mediterranean offers favourable cultivation conditions, but more research is needed on agronomic practices like spacing and soil management, which affect profitability and sustainability. A trial was conducted in an outdoor plantation to assess the effect of two planting spacings (PS-0.5, plant spacing of 0.5 m; PS-1, plant spacing of 1 m) and two weed management methods (SC-BS, soil cover with black screen; SC-M, soil cover with mulch) on pitaya production parameters (fruits plant‑1; kg plant‑1; average fruit weight; kg m‑2), in the first and second production years. The use of mulching (SC-M) resulted in a higher number of fruits plant‑1 compared to the black screen (SC-BS), but this effect was only observed in the 1st production year. However, PS-1 and SC-BS obtained higher yield (kg plant‑1) compared to the PS-0.5 and SC-M plants. Neither plant spacing nor soil cover strongly influenced fruit size variation over time. Ultimately, the spacing that proved to be the most productive was the tightest (PS-0.5) with an average value of 0.82±0.04 kg m‑2, compared to PS-1 (0.60±0.04 kg m‑2). Results show that pitaya productivity is increasing annually, even under tighter spacings. Adding organic matter to the soil significantly boosts production, and consistent mulching improves soil fertility and controls weeds efficiently.
- Sustainable management of pitaya (Selenicereus spp.) pruning residues: exploring composting as a sustainable solutionPublication . Trindade, Ana Rita; Matias, Pedro; Silva, Soraia; Zarcos Duarte, Beatriz; Trindade, D.; Duarte, Amilcar; Reis, Mário; Guerreiro David Coelho, Luísa IsabelPitaya (Selenicereus spp.) thrives in less fertile soils and has lower water requirements than other fruit crops. Therefore, is gaining popularity among farmers in Portugal (Algarve). Although there are some outdoor plantations, most are cultivated in greenhouses, for a higher and more constant growth. Pruning is performed throughout the year due to vigorous shoot production, resulting in substantial waste that requires proper disposal. Since most of these cladodes aren't suitable for vegetative propagation, or present sanitary problems, composting can be a sustainable solution for managing this waste. To evaluate the compost produced from pitaya pruning waste, a trial was conducted using three mixtures: P-1 (grass clippings, cladodes, grape pomace, and orange waste in a 4:1:1:1 ratio v/v); P-2 (grass clippings and cladodes in a 4:1 ratio v/v); and P-3 (cladodes and orange waste in a 1:1 ratio v/v). Composting took place in cylindrical piles for over four months, with continuous temperature monitoring and periodic determination of pH, electrical conductivity, moisture, C/N ratio and organic matter. Chemical, physical and biological analysis were performed at the end of the processes. P-2 and P-1 produced composts with high organic matter content (≥80%), with near-neutral pH (7.4 and 7.7 respectively) and low electrical conductivity (1.5 and 1.7 dS m-1 respectively), making them suitable for soil application. In contrast, P-3 had a higher pH and conductivity (9.3 and 3.1 dS m-1), potentially limiting its use. All composts showed good physical properties. The results indicate that composting pitaya cladodes is a viable farming practice, suitable for various agricultural contexts. Overall, composting pitaya pruning waste promotes circular agriculture, contributing to the recovery of soil fertility and increasing its organic matter content.
- GC Insights: Fostering transformative change for biodiversity restoration through transdisciplinary researchPublication . Ekberzade, Bikem; Carrasco, Rita; Izdebski, Adam; Sofo, Adriano; Larsen, Annegret; Akinyemi, Felicia O.; Bruckman, Viktor J.; Baker, Noel; Clark, Simon; Hill, ChloeAccording to a 2019 United Nations report, of all the known species, up to 1 million face extinction globally. Despite being considered a pressing global risk with several international efforts to protect and to restore, biodiversity loss and the degradation of ecosystems continue at an alarming rate. In December 2022, the UN Biodiversity Conference (COP15) saw the adoption of the Kunming-Montreal Global Biodiversity Framework, where four overarching international goals for biodiversity and 23 targets were set. While this is a positive step towards addressing the drivers of biodiversity loss, we will need not just public and political will but also more effective methods to integrate and use scientific information to reach the goals and targets outlined. To facilitate this, scientists and research institutions need to establish alternative and new approaches to transform the way science is conducted, communicated, and integrated into the policymaking process. This will require the scientific community to become proficient at working in interdisciplinary and transdisciplinary teams, establishing connectivity across scientific disciplines and engaging in the policymaking process to ensure that the best available scientific evidence is not only comprehensible to decision-makers but also timely and relevant. This commentary details how scientists can embrace transformative change within and outside of their own communities to increase the impact of their research and help reach global targets that benefit society.
- A walk in wetlands morphology and inundation patternsPublication . Borlido Oliveira Lima, Maria João; Carrasco, Rita; Ferreira, ÓscarBalanced conservation strategies are needed to ensure the protection of wetlands in the twenty-first century. To guarantee the success of wetland restoration projects, it is essential to better understand the characteristics of these fragile sites and the driving mechanisms of change. This study characterised the morphology of wetland platforms at five backbarrier sites distributed around the world and subject to various tidal regimes (micro- to macrotidal). Wetland ecogeomorphologic units were manually mapped and classified into upper-, mid-low marsh, tidal flat and channel, using high-resolution Digital Elevation Models (DEMs). Differences in elevation, slope and hydroperiod metrics between morphological units and study sites were assessed, as well as the influence of tidal range and associated inundation patterns on wetland zonation. Upper and mid-low marshes showed steeper intra-slopes compared to channels and tidal flats, with the latter exhibiting longer hydroperiods. No significant differences in normalised elevation and hydroperiod were detected between study sites. Steeper slopes were observed in microtidal systems compared to meso- and macrotidal systems, likely due to constrained horizontal migration. These findings enhance the understanding of the regional patterns of wetland morphological succession, and highlight that tidal range is not the primary driver of spatial variability in wetland zonation. Moreover, this baseline dataset of morphological thresholds can be used to support future large-scale comparisons and inform sustainable management strategies for coastal wetlands, particularly in the context of climate change. Future studies should analyse additional landscape metrics (e.g., vegetation density, sediment accretion rates) and evaluate the cumulative effects of site-specific drivers on wetland geometry.
- Impact of face masks weathering on the mussels Mytilus galloprovincialisPublication . FONSECA, TAINA; Edo Cuesta, Carlos; Vilke, Juliano Marcelo; Astudillo-Pascual, Marina; Ribeiro Gonçalves, Joanna Melissa; Bebianno, MariaThe COVID-19 pandemic has triggered an unprecedented need for single-use face masks, leading to an alarming increase in plastic waste globally. Consequently, the improper disposal of face masks has added to the existing burden of plastic pollution in the oceans. However, the complete environmental and marine ecotoxicological impact remains unclear. This study aims to investigate the ecotoxicological impact caused by the weathering of disposable face masks (DFMs) in the marine environment on mussels Mytilus galloprovincialis (M. galloprovincialis) by assessing biochemical, cytotoxic, and genotoxic effects. The mask leachate was analysed for the presence of nano and microplastics. Furthermore, the leachate was used in in vivo and in vitro toxicity bioassays to assess its impacts on M. galloprovincialis. The in vivo exposure of M. galloprovincialis to face mask leachate for 14 days induced a significant increase in catalase (CAT) activity in mussel gills, although not enough to prevent oxidative damage to cell membranes. DNA damage was also registered in mussel haemocytes after in vivo exposure to mask leachate. The in vitro Neutral Red (NR) cytotoxicity assay indicated that leachate concentrations ≤ 0.5 g/L-1 pose a significant risk to the health of mussel haemocytes, which seems a reliable tool for the cytotoxicity impact assessment of face masks in the marine environment. Therefore, the leachate obtained from face masks in seawater causes oxidative stress, oxidative damage, cytotoxicity, and genotoxicity in M. galloprovincialis, indicating that the plastic burden generated by DFMs in the ocean and its subsequent weathering represents a ubiquitous and invisible threat to the marine biota.
- Oceanographic research in the Thermaikos Gulf: a review over five decadesPublication . Androulidakis, Yannis; Makris, Christos; Kombiadou, Katerina; Krestenitis, Yannis; Stefanidou, Natassa; Antoniadou, Chryssanthi; Krasakopoulou, Evangelia; Kalatzi, Maria-Ignatia; Baltikas, Vasilis; Moustaka-Gouni, Maria; Chintiroglou, Chariton CharlesThe Thermaikos Gulf (TG) is a semi-enclosed, river-influenced, marine system situated in the eastern Mediterranean Sea, sustaining both urban coastal regions and ecologically preserved natural areas. Facing a plethora of environmental and anthropogenic pressures, the TG serves as a critical nexus where human activities intersect with marine ecosystems. The quality and health of the TG’s marine environment are tightly linked to the socioeconomic activities of the coastal communities comprising approximately 1.5 million inhabitants. The main features of the TG’s environmental dynamics and ecological status have been scrutinized by dedicated research endeavors during the last 50 years. This review synthesizes the seminal findings of these investigations, offering an evaluation of their contribution to research, their present collective impact, and their trajectory toward the future. A severe deterioration of the TG’s environmental quality was detected in the 1970s and 1980s when the treatment of urban wastewater was completely absent. A steady trend of recovery was observed after the 1990s; however, so far, the goal of a “good environmental state” mandated by national legislation and European directives has not been achieved. A clear reduction in research was detected after 2010, associated with the recession of the Greek economy, following the “golden period” for research in the TG from the mid-1990s until the late 2000s. The most important research gaps and uncertainties are discussed, while specific targeted recommendations for the improvement of monitoring and understanding of the physical, biochemical, and ecological state of the gulf are provided: (i) increase in permanent observational stations (temporally and spatially); (ii) inclusion of all major environmental parameters; (iii) monitoring of the quantity and quality of all land-originated freshwater discharges; (iv) monitoring and management of important aspects of the marine environment that have received minimal attention in the past (e.g., coastal erosion, plastic pollution); (v) development of accurate prediction tools (e.g., numerical techniques) to support first-level responders and efficient management; (vi) establishment of a supervising public entity that would support the holistic overview and management of the entire TG. These suggestions are directed at overcoming the existing uncertainties in the knowledge of the TG, safeguarding its ecological integrity and its role as a crucial link to marine biodiversity and sustainability in the Mediterranean basin.