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- Evaluation of superworm (Zophobas morio) larvae meal as a fish meal substitute in juvenile stellate sturgeon (Acipenser stellatus) dietsPublication . Lebria, Arash; Langroudi, Hadi Ershad; Pajand, Zabih Ollah; Sajjadi, Mirmasoud; Abdollahpour, HamedThis study aimed to evaluate the effects of dietary inclusion of superworm (Zophobas morio) larvae meal (SWM) on growth performance, hematological parameters, blood biochemical parameters, proteolytic enzyme activity, and body composition in juvenile stellate sturgeon (Acipenser stellatus). A total of 120 juvenile fish (initial body weight: 28.08 ± 0.13 g) were randomly assigned to four dietary treatments in triplicate groups. Experimental diets were formulated to replace 0% (control), 10% (SWM10), 20% (SWM20), and 30% (SWM30) of fish meal with SWM, maintaining isonitrogenous (45.27% protein) and isoenergetic (19.50 MJ/kg) profiles. Fish were hand-fed to apparent satiation three times daily over an 8-week period. Growth performance data indicated that up to 10% SWM inclusion did not significantly affect final weight, weight gain, or condition factor compared to the control (p > 0.05). However, 20% and 30% inclusion levels resulted in significantly reduced growth performance (p < 0.05). Hematological analysis showed that WBC counts were significantly higher in all SWM-fed groups (16.2–19.3 ×10 ³/mm³) compared to the control (13.9 ×10 ³/mm³), with neutrophil percentages also elevated (16.3–17.2% vs. 13.7% in the control) (p < 0.05). No significant differences were observed in RBC count, hemoglobin, hematocrit, MCV, MCH, or MCHC (p > 0.05). Biochemical results showed that triglyceride levels were significantly elevated in the SWM30 group (p < 0.05), while cholesterol levels were significantly lower compared to the control (p < 0.05). Serum glucose level remained unaffected across treatments (p > 0.05). Proteolytic enzyme analysis indicated a significant reduction in trypsin activity in fish fed the SWM30 diet (p < 0.05). Whole-body composition analysis revealed that increasing SWM inclusion significantly decreased carcass protein, moisture, and ash contents, while lipid content increased, with the highest fat level observed in the SWM30 group (p < 0.05). Overall, the findings suggest that superworm larvae meals can be included in the diet of juvenile stellate sturgeon at levels up to 10% fishmeal replacement without adverse effects on growth, hematological parameters, blood biochemistry, or proteolytic enzyme activity.
- The palynology of the upper triassic-lower jurassic in the Algarve and Lusitanian basins, PortugalPublication . Vilas-Boas, Margarida; Cirilli, Simonetta; Pereira, Zélia; Duarte, Luís Vítor; Fernandes, PauloHigh-resolution palynological analyses from the Algarve and Lusitanian basins (Portugal) provide a refined biostratigraphical framework and palaeoenvironmental reconstruction for the Late Triassic–Early Jurassic transition. In the Algarve Basin, three new palynozones (AT, SC, and CP) characterise the Silves Group from the early Carnian to early Hettangian, documenting the first Iberian occurrence of Tulesporites briscoensis and precisely delineating the Triassic–Jurassic Boundary (TJB). In the Lusitanian Basin, three palynozones (CG, IK, and Pm) constrain the Conraria and Pereiros formations to the Norian–Hettangian, with the TJB located at the base of the Pereiros Formation. Palaeoenvironmental reconstructions reveal distinct basin-specific evolutions. The Algarve Basin records an early transition from fluvial (Silves Sandstones) to marginal-marine (lagoonal and pond) settings, evidenced by abundant upper Carnian algal elements and reworked Neoproterozoic algae. Conversely, the Lusitanian Basin reflects a Norian-Hettangian marginal-marine, river-dominated setting, with microforaminiferal linings at the base of the Pereiros Formation marking the earliest marine transgression in the Lusitanian Basin. Quantitatively, both basins show a persistent dominance of xerophytic taxa, indicating a shift toward warmer, seasonally dry conditions across the TJB. Malformed sporomorphs in both records suggest environmental stress potentially linked to Central Atlantic Magmatic Province (CAMP) activity. Comparative analysis reveals that sedimentation initiated earlier in the Algarve (early Carnian) than in the Lusitanian Basin (Norian), suggesting diachronous development during Pangaea breakup. The assemblages show strong affinities with the Onslow Microflora, highlighting the Portuguese margin as a key archive for western Tethyan floral and climatic evolution.
- A novel three-step biologically informed ocean partitioning strategy: insights from toxigenic phytoplankton in a coastal upwelling systemPublication . Borlido Oliveira Lima, Maria João; Caballero, I.; Barbosa, AnaOcean partitions are often based on readily accessible variables, such as abiotic factors and chlorophyll-a concentration, but provide limited insight into biological patterns. This study developed a three-step partitioning strategy prioritizing environmental factors that best described the variability patterns of harmful algal bloom (HAB)-forming taxa off SW Iberia. These included the producers of amnesic shellfish poisoning (ASP), diarrhetic shellfish poisoning (DSP), and paralytic shellfish poisoning (PSP). First, dimensionality reduction and unsupervised classification were applied to three environmental datasets, derived from remote sensing and model outputs, covering a 19-year period. Second, different empirical-statistical models were used to determine which datasets best explained the abundance of HAB-producers, available for an 8-year period in different classified coastal production areas. Finally, the best datasets were used to derive partitions prioritizing the variability of different HAB groups, at a pixel level. The first classifications identified up to 12 regions, with four to five located in the coastal-slope domain, with a variable configuration depending on the dataset. The best predictor datasets and models identified five regions (two inner-shelf, two outer-shelf/slope, and one transitional coastal-ocean region), representative of HAB groups. No clear distinctive partitions were identified for different groups, namely for ASP- and DSP-producers, likely due to the combined influence of upwelling and freshwater discharges, along with submarine topographic features. Our partitioning strategy can be applied to other marine systems and taxonomic groups. Future improvements, including more complete environmental and biological datasets, could enhance the value of biologically informed environmental partitions as proxies for species abundance.
- Digital intimacies in motion: redefining sex in tourismPublication . Qiu, XuDong (Oliver); Cohen, Scott; Skinner, JonathanThis paper redefines sex in tourism by introducing cyber-sexual leisure - digitally mediated and emotionally ambivalent erotic engagements that unfold through platforms like Grindr during travel. Drawing on interviews with queer male tourists, we examine how fragmented, gamified, and affectively ambivalent interactions produce symbolic erotic pleasure, even in the absence of physical sex. Moving beyond outcome-oriented and corporeal understandings, sexual experience is conceptualised as a processual continuum encompassing anticipation, interaction, and emotional aftermath. A recursive model is proposed comprising four stages: digital engagement, affective and erotic investment, emotional and/or physical outcomes, and re-engagement or withdrawal. These dynamics are intensified by tourism conditions - mobility, anonymity, novelty, and compressed time - while also shaped by inequalities structuring visibility, desirability, and vulnerability in contemporary tourism.
- Food sovereignty and agroecology in conflict zones: building resilience amidst crisisPublication . Alum, Esther Ugo; Christine, Ainebyoona; Izah, Sylvester Chibueze; Ogwu, Matthew Chidozie; Uti, Daniel Ejim; Egwu, Chukwuoyims Kevin; Alum, Richard Obinna; Govindarajan, Rasiravathanahalli KaveriyappanArmed conflict disrupts agricultural production, displaces farming communities, degrades natural resources, and weakens local institutions, thereby intensifying food insecurity and dependence on humanitarian assistance. This review examined how food sovereignty and agroecology can jointly strengthen food‐system resilience, community self‐reliance, and peacebuilding in conflict‐affected settings. A qualitative narrative review was conducted using peer‐reviewed articles, institutional reports, and case studies published between 2012 and 2025 and retrieved from PubMed, Scopus, and Web of Science. Evidence was synthesized thematically around conflict‐related food‐system disruption, local control of food resources, agroecological practices, implementation barriers, and recovery strategies. Findings from Colombia, Palestine, Syria, and Somalia indicate that community‐led agroecology, including crop diversification, seed saving, agroforestry, water conservation, organic soil management, and local market development, can improve food availability, restore ecological functions, preserve traditional knowledge, strengthen livelihoods, and rebuild social cohesion. However, insecurity, displacement, contested land tenure, weak governance, inadequate financing, damaged infrastructure, and limited technical capacity constrain implementation and scale‐up. The review concludes that integrating food sovereignty with agroecology offers a context‐sensitive pathway for addressing immediate food needs while supporting long‐term ecological recovery, economic autonomy, and conflict‐sensitive development. Governments, humanitarian agencies, and development partners should embed agroecology in post‐conflict recovery policies, secure equitable land and resource rights, strengthen farmer cooperatives and extension systems, finance locally led initiatives, rebuild markets and rural infrastructure, and establish participatory monitoring frameworks that prioritize women, displaced people, indigenous groups, and smallholder farmers across affected regions.
- Emerging occurrence of Gambierdiscus carolinianus in the Azores:The northernmost Atlantic recordPublication . Barbosa, Miguel; Churro, Catarina; Gomes, Inês; Danchenko, Sergei; Caeiro, Maria Filomena; Afonso, Pedro; Amorim, Ana; Reis Costa, PedroThe dinoflagellate genus Gambierdiscus was detected for the first time in the Azores Archipelago, representing itsnorthernmost record to date (> 39 N). Two strains were isolated from macroalgal substrates on Corvo and FaialIslands during the summer of 2024, coinciding with a marine heatwave in which sea-surface temperatureanomalies exceeded +2 C. Morphological and molecular analyses identified both isolates as Gambierdiscus car-olinianus, extending further North the known range of this genus in the Atlantic and complementing previousrecords from other Macaronesian archipelagos. The Azorean isolate from Corvo clustered more closely withwestern Atlantic populations than with Madeira or the Canary Islands strains, suggesting long-range connectiv-ity potentially driven by oceanographic processes. Although no ciguatera poisoning (CP) cases have beenreported in the Azores, the occurrence of Gambierdiscus highlights the need for sustained monitoring and ecological assessments to evaluate the risk of CP emergence in this remote temperate archipelago under shiftingenvironmental conditions.
- Seasonal-to-interannual hydroclimatic variability in Afromontane environments during the late Early Pleistocene hominin occupations on the Southeastern Ethiopian HighlandsPublication . Briatico, Giuseppe; Hartman, Gideon; Gossa, Tegenu; Asrat, Asfawossen; Hailu, Haregwin; Ketema, Natnael; Martínez-Navarro, Bienvenido; Niespolo, Elizabeth M.; Renne, Paul R.; Resom, Angesom; Hovers, ErellaClimate variability is a key factor influencing the distribution and adaptive response of mammalian species, including hominins. Here, we investigate seasonal and interannual hydroclimatic and environmental variability associated with the late Early Pleistocene hominin occupations on the Southeastern Ethiopian Highlands. We present stable carbon and oxygen isotope analyses of sequentially sampled tooth enamel from herbivores recovered from the archaeological contexts of Melka Wakena and Gadeb (2300–2400 m a.s.l.) and dated between 1.6 and ~ 1.0 Ma. Carbon isotope data indicate predominantly C4 and mixed C3–C4 diets, consistent with mosaic vegetation as part of the Dry evergreen Afromontane Forest and grassland complex (DAF). Intra-tooth oxygen isotope profiles suggest seasonal variability and interannual fluctuations in water balance, reflecting changes in precipitation, evaporation, and local hydrology. Although the temporal resolution of individual tooth records precludes identification of specific climatic drivers, the isotopic data document recurring hydroclimatic variability within high-elevation environments characterized by broadly comparable ecological conditions. Herbivore diets show limited long-term change, suggesting sustained resource availability across seasons and over hundreds of thousands of years. These results indicate that the Ethiopian Highlands repeatedly supported mammalian communities and recurrent Acheulean hominin occupations during the late Early Pleistocene, providing sustained access to water and vegetation resources within an Afromontane environmental framework.
- Documentos das provas de agregação de Amélia Cristina Ferreira da Silva. Titulo da Lição: Contributo do custeio por atividades orientado pelo tempo para a gestão de valor em saúdePublication . Ferreira da Silva, Amélia CristinaRelatório apresentado à Universidade do Algarve, no âmbito das Provas de Agregação, nos termos da alínea c) do artigo 5.º do Decreto-Lei n.º 239/2007, de 19 de junho. Este documento é parte integrante da documentação exigida para as provas de agregação, nos termos da alínea c) do artigo 5.º do Decreto-Lei n.º 239/2007, de 19 de junho de 2007. O candidato pode optar por um seminário ou por uma lição de síntese sobre um tema do ramo do conhecimento ou da especialidade em que são prestadas as provas. A opção da candidata recai sobre a apresentação de um seminário sobre um tópico específico do programa da unidade curricular de Contabilidade e Controlo de Gestão, posicionada no 2.º semestre do 1.º ano do plano de estudos do mestrado em Contabilidade e Finanças, ministrado pelo Instituto Superior de Contabilidade e Administração do Porto (ISCAP), do Instituto Politécnico do Porto.(...)O objetivo geral do seminário é compreender e analisar o processo de concepção do Custeio Baseado em Atividades Orientado pelo Tempo (TDABC - Time-Driven Activity-Based Costing), em organizações complexas (Cardinaels & Soderstrom, 2013). Os objetivos específicos concretizam-se, por um lado, na sistematização dos procedimentos conducentes à conceção de um modelo de TDABC em Unidades Locais de Saúde (ULS) e, por outro, na análise dos desafios técnicos, humanos e organizacionais inerentes a todo o processo. Simultaneamente, o seminário procura demonstrar a aplicabilidade dos conteúdos ministrados no mestrado e motivar os estudantes a desenvolverem as suas dissertações, trabalhos de projeto ou relatórios de estágio nesta área, contribuindo, assim, para a promoção da investigação desenvolvida em estreita articulação com entidades não académicas, conforme as recomendações da (extinta) Fundação para a Ciência e Tecnologia (https://www.fct.pt/bolsas-de-doutoramento-em-ambiente-nao-academico/).(...)
- An empirical model for non-linear pressure drag across non-hydrostatic flow regimes with trapped lee wavesPublication . Argain, Jose LuisThis study introduces a novel empirical model to estimate the total pressure drag generated by trapped lee waves (TLW) and upward-propagating internal waves in moderate-to-strong non-hydrostatic, stratified flow over a mountain ridge, as a function of flow non-linearity. The core framework is based on a two-layer atmosphere characterized by a piecewise-constant Scorer parameter, l, where a lower layer of constant l1 underlies an upper layer with l2<l1. This framework incorporates key features to extend beyond idealized assumptions, providing a reliable tool for predicting non-linear flow regimes over mountainous terrain, particularly those featuring realistic vertical profiles of the Scorer parameter. To develop the empirical formulation, a micro- to mesoscale numerical model is employed to simulate realistic, non-linear flows over steep topography. The proposed empirical model yields results that compare favorably with numerical simulations across a range of moderate-to-strong non-hydrostatic regimes, including complex cases derived from observational data and realistic vertical profiles of the Scorer parameter. The model demonstrates robust performance ranging from strongly to moderately non-hydrostatic regimes (the latter corresponding to dimensionless half-widths of approximately 5), and provides accurate drag estimates for non-linearities up to a dimensionless mountain height of approximately unity. Therefore, this empirical approach serves as a valuable foundation for improving drag parameterizations in weather prediction models, offering a computationally efficient alternative to high-resolution numerical downscaling over steep terrain.
- A millennium-scale iberian margin chronology validates the 1755 Lisbon tsunami record and reveals faro recordPublication . Abrantes, Fatima; Domingues Gomes, Sandra; Salvado, Marta; Magalhães, Vitor; Salgueiro, Emilia; Drago, Teresa; Cordeiro, Lívia; Naughton, FilipaThis work presents new data and several age–depth reconstructions based on distinct approaches to improve previously published age models for sedimentary sequences collected on the Iberian Margin middle shelf: PO287 6-1B, 2G (Porto); PO287 26-1B, 3G, and D13902 (Lisbon); and POPEI VC2B (Algarve). The new age models are constructed using radiocarbon dates calibrated with the IntCal20 calibration curve and smooth-spline regressions from the CLAM (non-Bayesian) and Bacon (Bayesian) models. A comparison of the age–depth models generated by the different approaches shows that, beyond the distinct solutions produced by CLAM and Bacon for each site, the differences between the two methods are inconsistent across sites. Furthermore, neither model yielded reliable results for the discontinuous sedimentary sequence with reworked older sediments and a hiatus. In this specific case, the “classical” linear regression (best-fit) approach appears to yield the results that enable intercomparison across all sequences. This exercise confirms the record of the 1755 earthquake and tsunami in the Lisbon core splice and a potential record of the same event in the Eastern Algarve, although the collected data indicate a more distal or lower-energy wave deposit.