| publications-2001 |
Peer reviewed articles |
2021 |
Giulia Cipolletta, Emine Gozde Ozbayram, Anna Laura Eusebi, ĂaÄrı Akyol, Simos Malamis, Eric Mino, Francesco Fatone |
Policy and legislative barriers to close water-related loops in innovative small water and wastewater systems in Europe: A critical analysis |
Journal of Cleaner Production |
10.1016/j.jclepro.2020.125604 |
IoT & Sensors |
Uncategorized |
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No abstract available |
776643 |
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| publications-2002 |
Peer reviewed articles |
2020 |
Johannes Kisser, Maria Wirth, Bart De Gusseme, Miriam Van Eekert, Grietje Zeeman, Andreas Schoenborn, Björn VinnerĂ„s, David C. Finger, Sabina Kolbl Repinc, TjaĆĄa Griessler Bulc, Aida Bani, Dolja Pavlova, Lucian C. Staicu, Merve Atasoy, Zeynep Cetecioglu, Marika Kokko, Berat Z. Haznedaroglu, Joachim Hansen, Darja IsteniÄ, Eriona Canga, Simos Malamis, Margaret Camilleri-Fenech, Luke Beesley |
A review of nature-based solutions for resource recovery in cities |
Blue-Green Systems |
10.2166/bgs.2020.930 |
Simulation & Modeling |
Precipitation & Ecological Systems |
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AbstractOur modern cities are resource sinks designed on the current linear economic model which recovers very little of the original input. As the current model is not sustainable, a viable solution is to recover and reuse parts of the input. In this context, resource recovery using nature-based solutions (NBS) is gaining popularity worldwide. In this specific review, we focus on NBS as technologies that bring nature into cities and those that are derived from nature, using (micro)organisms as principal agents, provided they enable resource recovery. The findings presented in this work are based on an extensive literature review, as well as on original results of recent innovation projects across Europe. The case studies were collected by participants of the COST Action Circular City, which includes a portfolio of more than 92 projects. The present review article focuses on urban wastewater, industrial wastewater, municipal solid waste and gaseous effluents, the recoverable products (e.g., nutrients, nanoparticles, energy), as well as the implications of source-separation and circularity by design. The analysis also includes assessment of the maturity of different technologies (technology readiness level) and the barriers that need to be overcome to accelerate the transition to resilient, self-sustainable cities of the future. |
776643 |
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| publications-2003 |
Peer reviewed articles |
2024 |
Muhammad Usama Ashraf, Daniel Nyqvist, Claudio Comoglio, Costantino Manes |
The effect of in-flume habituation time and fish behaviour on estimated swimming performance |
Journal of Ecohydraulics |
10.1080/24705357.2024.2306411 |
Data Management & Analytics |
Precipitation & Ecological Systems |
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No abstract available |
860800 |
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| publications-2004 |
Peer reviewed articles |
2024 |
Jelger Elings, Stijn Bruneel, Ine S. Pauwels, Matthias Schneider, Ianina Kopecki, Johan Coeck, Rachel Mawer, Peter L. M. Goethals |
Finding navigation cues near fishways |
Biological reviews |
10.1111/brv.13023 |
Simulation & Modeling |
Precipitation & Ecological Systems |
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ABSTRACTMany fish species depend on migration for various parts of their life cycle. Wellâknown examples include diadromous fish such as salmon and eels that need both fresh water and salt water to complete their life cycle. Migration also occurs within species that depend only on fresh water. In recent decades, anthropogenic pressures on freshwater systems have increased greatly, and have resulted, among other effects, in drastic habitat fragmentation. Fishways have been developed to mitigate the resulting habitat fragmentation, but these are not always effective. To improve fishway efficiency, the variety of navigation cues used by fish must be better understood: fish use a multitude of sensory inputs ranging from flow variables to olfactory cues. The reaction of a fish is highly dependent on the intensity of the cue, the fish species involved, and individual traits. Recently developed monitoring technologies allow us to gain insights into different combinations of environmental and physiological conditions. By combining fish behavioural models with environmental models, interactions among these components can be investigated. Several methods can be used to analyse fish migration, with stateâspace models, hidden Markov models, and individualâbased models potentially being the most relevant since they can use individual data and can tie them to explicit spatial locations within the considered system. The aim of this review is to analyse the navigational cues used by fish and the models that can be applied to gather knowledge on these processes. Such knowledge could greatly improve the design and operation of fishways for a wider range of fish species and conditions. |
860800 |
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| publications-2005 |
Peer reviewed articles |
2022 |
Bensing, K., Tuhtan, J. A., Toming, G., Khan, A. H., & Lehmann, B. |
Fish body geometry reduces the upstream velocity profile in subcritical flowing waters |
Aquatic Sciences |
10.1007/s00027-022-00863-6 |
Uncategorized |
Uncategorized |
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AbstractFish body geometry is highly variable across species, affecting the fluid-body interactions fish rely on for habitat choice, feeding, predator avoidance and spawning. We hypothesize that fish body geometry may substantially influence the velocity experienced by fish swimming. To test this hypothesis, we built nine full-scale physical prototypes of common freshwater fish species. The prototypes were placed in a large laboratory flume and upstream time-averaged velocity profiles were measured with increasing distance from the anterior-most location of each body. The measurements revealed that the body geometry can have a significant influence on the velocity profile, reducing the flow field at a distance of one body length upstream of the fish. Furthermore, it was found that the upstream velocity profiles from the nine fish species investigated in this study can be normalized to a single fit curve based on the freestream velocity and fish body length under subcritical flow conditions. These findings are significant, because they show that conventional point velocity measurements overlook the reducing effect of the fish body on the upstream flow field, creating a systematically biased representation of the velocity experienced by fish in subcritical flowing waters. This bias is illustrated by velocity field maps created with and without the presence of the physical models for three different fish species. Finally, we provide an example of how point velocity measurements can be recalculated to provide upstream velocity field maps closer to âthe fishâs perspectiveâ. |
860800 |
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| publications-2006 |
Peer reviewed articles |
2023 |
Hansen, H. H., Bergman, E., Cowx, I. G.,, Lind, L., Pauna, V. H., & Willis. K. A |
Resilient Rivers and Connected Marine Systems: A Review of Mutual Sustainability Opportunities. |
Global Sustainability |
10.1017/sus.2022.19 |
Simulation & Modeling |
Precipitation & Ecological Systems |
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Non-technical summary Rivers are crucial to the water cycle, linking the landscape to the sea. Human activities, including effluent discharge, water use and fisheries, have transformed the resilience of many rivers around the globe. Sustainable development goal (SDG) 14 prioritizes addressing many of the same issues in marine ecosystems. This review illustrates how rivers contribute directly and indirectly to SDG 14 outcomes, and also provides ways to potentially address them through a river to sea view on policy, management and research. Technical summary The United Nations initiated the SDGs to produce âa shared blueprint for peace and prosperity for people and the planet, now and into the futureâ. Established in 2015, progress of SDGs directed at the aquatic environment is slow despite an encroaching 2030 deadline. The modification of flow regimes combined with other anthropogenic pressures underpin ecological impacts across aquatic ecosystems. Current SDG 14 targets (life below water) do not incorporate the interrelationships of rivers and marine systems systematically, nor do they provide recommendations on how to improve existing management and policy in a comprehensive manner. Therefore, this review aims to illustrate the linkages between rivers and marine ecosystems concerning the SDG 14 targets and to illustrate land to sea-based strategies to reach sustainability goals. We provide an applied case study to show how opportunities can be explored. We review three major areas where mutual opportunities are present: (1) rivers contribute to marine and estuary ecosystem resilience (targets 14.1, 14.2, 14.3, 14.5); (2) resilient rivers are part of the global fisheries sustainability concerns (targets 14.4, 14.6, 14.7, 14.B) and (3) enhancing marine policy and research from a river and environmental flows perspective (targets 14.A, 14.C). Social media summary Restoring resilience to rivers and their environmental flows helps fulfil SDG 14. |
860800 |
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| publications-2007 |
Peer reviewed articles |
2023 |
Mawer, R., Bruneel, S. P., Pauwels, I. S., Elings, J., Pickholtz, E., Pickholtz, R., Schneider, M., Coeck, J., & Goethals, P. L. M |
Individual variation in the habitat selection of upstream migrating fish near a barrier |
Movement Ecology |
10.1186/s40462-023-00414-0 |
Uncategorized |
Groundwater |
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Abstract Background Migration is a vital element of the life cycle of many freshwater fish species but is increasingly hampered globally by riverine barriers. Fish passes are a common approach to enable migration past barriers but are often ineffective. More knowledge is required on fish behaviour as they approach barriers such as habitat preferences. Methods We evaluate the habitat selection of two upstream migrating fish species, barbel Barbus barbus and grayling Thymallus thymallus, at a hydropower plant in southern Germany, considering individual variation and population trends. Fish were tracked via fine-scale 2D acoustic telemetry in 2018 during their spawning migration. Step selection functions were used to evaluate selection of hydraulic parameters by the fish for a time step of 20Â s. Exploratory models were built via model selection for each individual fish, to evaluate the extent of individual variation in model structure. A population model was developed for each species by averaging coefficients from individual models to describe general trends. The extent of individual variation was determined and confidence intervals for the population model coefficients were calculated. Results Fish varied greatly in individual model structure though common terms were apparent in both species, such as depth, flow velocity, the angular difference between fish and velocity, and the logarithm of the step length. Final population models for barbel included several parameters describing habitat selection and displacement. Barbel selected for faster flows, deeper water, and higher spatial velocity gradients. In addition, they selected to move more with the flow than against. Interactions were also present between habitat parameters, suggesting selection is context dependent. Barbel movement speed also changed with depth, flow velocity and spatial velocity gradient. With grayling, terms often had contrasting effects among individuals and thus general trends could not be distinguished for most terms. Conclusion Our findings demonstrate habitat selection by upstream migrating fish approaching a fish pass and differences in individual selection which may have an impact on barrier management. Step selection functions are a promising approach and can provide useful insight into habitat selection and movement by migrating freshwater fish in an altered river system. |
860800 |
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| publications-2008 |
Peer reviewed articles |
2023 |
Schumann, S., Mozzi, G., Piva, E., Devigili, A., Negrato, E., Marion, A., Bertotto, D. |
Social buffering of oxidative stress and cortisol in an endemic cyprinid fish |
Scientific Reports |
10.1038/s41598-023-47926-8 |
Uncategorized |
Uncategorized |
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AbstractFish exhibit complex social behaviours that can influence their stress levels and well-being. However, little is known about the link between social interactions and stress in wild fish, especially in running water environments. While many studies have explored the stress axis in fish, most have focused on specific social contexts, leaving gaps in understanding stress responses to social changes. Our study investigated collective behaviour and stress in wild Italian riffle dace (Telestes muticellus) in a controlled experimental setup simulating a natural river system. Results reveal that group-living fish have lower cortisol and oxidative stress levels in muscle tissue compared to solitary counterparts, suggesting a calming effect of conspecific presence. Additionally, we observed upregulated expression of antioxidant enzymes in group-living fish, indicating potential benefits to antioxidant defence systems. These insights shed light on the dynamic relationship between group behaviour and stress in wild fish within running water habitats and emphasise the use of multidisciplinary approaches. |
860800 |
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| publications-2009 |
Peer reviewed articles |
2022 |
Piva, E., Schumann, S., Dotteschini, S., Brocca, G., Radaelli, G., Marion, A., Irato, P., Bertotto, D., & Santovito, G. |
Antioxidant Responses Induced by PFAS Exposure in Freshwater Fish in the Veneto Region |
Antioxidants |
10.3390/antiox11061115 |
Uncategorized |
Wastewater Treatment Plants |
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In recent decades, the interest in PFAS has grown exponentially around the world, due to the toxic effects induced by these chemical compounds in humans, as well as in other animals and plants. However, current knowledge related to the antistress responses that organisms can express when exposed to these substances is still insufficient and, therefore, requires further investigation. The present study focuses on antioxidant responses in Squalius cephalus and Padogobius bonelli, exposed to significant levels of PFAS in an area of the Veneto Region subjected to a recent relevant pollution case. These two ubiquitous freshwater species were sampled in three rivers characterised by different concentrations of PFAS. Several biomarkers of oxidative stress were evaluated, and the results suggest that PFAS chronic exposure induces some physiological responses in the target species, at both cellular and tissue scales. The risk of oxidative stress seems to be kept under control by the antioxidant system by means of gene activation at the mitochondrial level. Moreover, the histological analysis suggests an interesting protective mechanism against damage to the protein component based on lipid vacuolisation. |
860800 |
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| publications-2010 |
Peer reviewed articles |
2023 |
Hansen, H. H., Schneider, M., & HĂ€gele, T. |
A Habitat Connectivity Reality Check for Fish Physical Habitat Model Results and Decision-Making for River Restoration |
Ecological Solutions and Evidence |
10.1002/2688-8319.12291 |
Simulation & Modeling |
Precipitation & Ecological Systems |
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Abstract Fish physical habitat models are a tool for guiding restoration efforts in lotic ecosystems, but often they overestimate restoration outcomes because currently they do not incorporate habitat connectivity. This persistent issue can, in extreme cases, result in little or no improvement to fish populations after the restoration, wasting valuable conservation resources. We present a case study where practitioners applied a fish habitat model for multiple life stages of gravel spawning fishes to a 52âkm stretch of the Iller River but did so at a microscale implementation by setting up a model based on cross sections with a maximum of 200âm distance from each other. This approach provided an opportunity to assess the connectivity of habitats for gravel spawning fishes, that is, European Grayling (Thymallus thymallus) and Common Nase (Chondrostoma nasus), integrating probabilities to find suitable habitats for all lifeâhistory stages and seasonal movements. We used the assessed habitat estimates (availability of distinct habitat types within reaches defined by the 200âm cross sections) to calculate the minimum distance a fish would need to overcome to change from one habitat type into the other as it hypothetically âgrew upâ from egg to full spawning adult. This approach can be interpreted as a life cycle habitat check as it considers all habitat types that are necessary to fulfil the life cycle of gravel spawning fishes including their size, distance and flow directionârelated orientation (e.g. larvae habitats only used when downstream of spawning areas). Our results show that the assumption of complete connectivity would require long movement distances for vulnerable life stages to find suitable habitat. This puts the high priority on the creation of migration corridors and passability of migration barriers in question. Without consideration of habitat types for all life stages of a species and their spatial context, restoration will not be successful. Shortly said: A perfect migration corridor does not necessarily provide habitat connectivity. We recommend the application of the habitat connectivity approach when predicting the effect of restoration measures and particularly setting the priority of measures for mitigation of fish migration. |
860800 |
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