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Item type: Item , What role do attitudes, information and taste play in consumer preferences and willingness to pay for domestic alternatives to exotic superfoods?(2025) Gassler, Birgit; Teuber, RamonaSuperfoods are a recent health-oriented food trend, especially among younger consumers. The most well-known superfoods, such as quinoa or goji berries, are considered exotic foods, at least for the European market. This contradicts another food trend: the movement towards regional or local foods. As little is known about how consumers evaluate this trade-off when consuming superfoods, we investigate i) consumers’ preferences and willingness to pay (WTP) for domestic and exotic superfood ingredients; and ii) factors determining a higher WTP for domestic superfood alternatives. To this end, we conducted a three-step Vickrey auction of fruit smoothies with exotic and domestic superfood ingredients. A total of 116 individuals participated in the within-subjects experiment, which included an information treatment, tastings and a sensory evaluation. In general, participants perceived superfoods as a healthy but expensive food trend potentially harmful to the environment. Moreover, participants were eager to try the exotic smoothie, but agreed more strongly with statements endorsing the positive health benefits and good taste of the domestic smoothie. In general, we found a higher WTP for the domestic smoothie, which was reinforced by providing information about the origin of the fruits. After tasting, the WTP a premium for the domestic smoothie was driven by differences in sensory evaluations, but no longer by product perceptions and food neophobia. This indicates that food neophobia is related to taste uncertainty, which was resolved by the tasting. We discuss practical implications for fruit growers and processors marketing products containing novel and familiar superfood ingredients.Item type: Item , Exploring for gloss : active exploration in visual material perception(2025) Lin, Lisa P. Y.; Drewing, Knut; Dörschner-Boyaci, KatjaImage motion contributes to the perception of visual material properties, and motion signals are generated during active exploration. However, little is known about how specific perceptual tasks influence the actions that generate these cues. In an experiment using virtual reality and real-time hand tracking, we investigated how the demands of perceptual tasks (e.g., judging gloss or lightness) shape exploratory behaviors. Participants either observed or actively explored objects varying in gloss and lightness while performing a matching task. We analyzed how their exploration patterns varied based on the tasks. Using the same stimuli in both tasks, we found that participants explored objects more extensively when judging gloss than when judging lightness. These findings suggest a strategic prioritization of relevant cues for gloss judgments, with participants using larger movements and object rotation to enhance viewing perspectives and highlight detection. Our findings show that exploration behaviors are task dependent, with actions adapted to the demands of the perceptual task at hand.Item type: Item , Exploring the potential and challenges of Lathyrus sativus (grass pea) in European agri-food value chains : a dross-country analysis(2025) Solovieva, Irina; Miteva-Bölter, Pavlina; Knez, Marija; Bessai, Ann-Kathrin; Barilli, Eleonora; Kasperczyk, Nadja; Ranic, Marija; Gurinovic, Mirjana; Luna Casado, Pedro Jose; Alba Morales, Nicolas; Sanchez, Manuel; Tisseyre, Cyril; Schaer, Burkhard; Xoplaki, ElenaModern agri-food systems demand crops that are climate change resilient, support environmental sustainability, enhance dietary diversity and appeal to consumers. This article examines the potential of underutilized crops in meeting these challenges. We take Lathyrus as a case study and examine it within the context of European agri-food value chains, with a particular focus on Germany and Spain. The study employs a range of methods—literature review, interviews, field observations, and consumer opinion surveys —to explore its versatility. The findings reveal that Lathyrus sativus (grass pea) offers significant benefits: it is adapted to dry climates and tolerates high rainfall. As a nitrogen fixing crop, it can play an important role in crop rotations, reducing the need for fertilization and providing an attractive alternative for organic farmers. Through appropriate processing methods, Lathyrus can enhance its beneficial nutritional characteristics. Furthermore, it is well suited for the development of innovative recipes that align with modern culinary trends and meet consumers’ expectations across different cultures. To make use of its potential, adaptive cultivation methods and value chain cooperation are needed. Along the value chain, the affordable pricing of Lathyrus-based products and clear communication of their nutritional, environmental, and social benefits prove to be most critical.Item type: Item , Resource characteristics of common reed (Phragmites australis) in the Syr Darya Delta, Kazakhstan, by means of remote sensing and random forest(2025) Baibagyssov, Azim; Magiera, Anja; Thevs, Niels; Waldhardt, RainerReed beds, often referred to as dense, nearly monotonous extensive stands of common reed (Phragmites australis), are the most productive vegetation form of inland waters in Central Asia and exhibit great potential for biomass production in such a dryland setting. With its vast delta regions, Kazakhstan has the most extensive reed stands globally, providing a valuable case for studying the potential of reed beds for the bioeconomy. However, accurate and up-to-date figures on available reed biomass remain poorly documented due to data inadequacies in national statistics and challenges in measuring and monitoring it over large and remote areas. To address this gap in knowledge, in this study, the biomass resource characteristics of common reed were estimated for one of the significant reed bed areas of Kazakhstan, the Syr Darya Delta, using ground-truth field-sampled data as the dependent variable and high-resolution Sentinel-2 spectral bands and computed spectral indices as independent variables in multiple Random Forest (RF) regression models. An analysis of the spatially detailed yield map obtained for Phragmites australis-dominated wetlands revealed an area of 58,935 ha under dense non-submerged and submerged reed beds (with a standing biomass of >10.5 t ha−1) and an estimated 1,240,789 tons of reed biomass resources within the Syr Darya Delta wetlands. Our findings indicate that submerged dense reed exhibited the highest biomass at 28.21 t ha−1, followed by dense non-submerged reed at 15.24 t ha−1 and open reed at 4.36 t ha−1. The RF regression models demonstrated robust performance during both calibration and validation phases, as evaluated by statistical accuracy metrics using ten-fold cross-validation. Out of the 48 RF models developed, those utilizing the Normalized Difference Vegetation Index (NDVI) and Normalized Difference Water Index (NDWI) as key predictors yielded the best standing reed biomass estimation results, achieving a predictive accuracy of R2 = 0.93, Root Mean Square Error (RMSE) = 2.74 t ha−1 during the calibration, and R2 = 0.83, RMSE = 3.71 t ha−1 in the validation, respectively. This study highlights the considerable biomass potential of reed in the region’s wetlands and demonstrates the effectiveness of the RF regression modeling and high-resolution Sentinel-2 data for mapping and quantifying above-ground and above-water biomass of Phragmites australis-dominated wetlands over a large extent. The results provide critical insights for managing and conserving wetland ecosystems and facilitate the sustainable use of Phragmites australis resources in the region.Item type: Item , Effects of high-flow oxygen therapy on oxygenation in dogs undergoing diagnostic bronchoscopy(2025) Ortlieb, Julia; Bender, Hannah; Schneider, Matthias; Tacke, Sabine; Hassdenteufel, EstherIntroduction: Hypoxemia is a common complication during bronchoscopy and bronchoalveolar lavage (BAL). High-Flow Oxygen Therapy (HFOT) has been used to improve oxygenation and prevent periods of hypoxemia in people undergoing bronchoscopy. Objective: The main objective of this study was to evaluate the effect of HFOT on oxygenation in dogs undergoing diagnostic bronchoscopy compared to a traditional oxygen supplementation method (TOT). A secondary objective was to assess potential HFOT-related complications. Methods: Prospective randomized clinical trial. Dogs presented for diagnostic bronchoscopy were randomly assigned to receive either HFOT or TOT using nasal cannulas during the bronchoscopic procedure. Oxygenation was monitored through PaO2 measurements taken at seven time points: baseline (t0), after preoxygenation (t1), post-induction (t2), pre- and post-BAL sampling (t3 and t4), at the end of the procedure (t5), and 1 h after bronchoscopy (t6). Pre- and post-procedure thoracic radiographs were assessed for air leak syndrome or aerophagia. Results: 20 privately owned dogs presented for diagnostic bronchoscopy were included in the study (HFOT group: n = 10, TOT group: n = 10). Baseline characteristics and physiological parameters did not differ significantly between groups. Five dogs in each group showed hypoxemia (PaO2 < 80 mmHg) at baseline with 1/5 in each group having PaO2 < 60 mmHg. HFOT improved oxygenation throughout the procedure, with a significant increase in PaO2 observed after preoxygenation (P = 0.001) and at the end of the procedure (P = 0.013). Additionally, only 1/10 dogs in the HFOT group experienced hypoxemia during bronchoscopy compared to 5/10 dogs in the TOT group, and patients in the HFOT achieved numerically higher PaO2 values across all time points during the procedure (t1–t5). No serious adverse events related to HFOT were observed, although aerophagia occurred in both groups without necessitating intervention. Conclusion: HFOT can improve oxygenation and prevent episodes of hypoxemia in dogs undergoing bronchoscopy compared to traditional oxygen supplementation methods.