The QuickScan CBM (Circular Business Model) offers an approach to develop a circular business model. It focuses primarily on the manufacturing industry, even though it can be used in other sectors. It consists of three parts: (1) an introduction with an explanation of backgrounds and central concepts, (2) knowledge maps of seven business models that together form a classification and (3) the actual QuickScan.An interactive application can be found at Business Model Lab. This last version is bilingual (Dutch and English). Regardless of the version, it can be used to develop a new CBM or adapt an existing business model based on a qualitative approach. The starting point is that better design and organisation of a CBM contributes to the transformation and transition towards a sustainable and circular economy.
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Camera trap technology has galvanized the study of predator-prey ecology in wild animal communities by expanding the scale and diversity of predator-prey interactions that can be analyzed. While observational data from systematic camera arrays have informed inferences on the spatiotemporal outcomes of predator-prey interactions, the capacity for observational studies to identify mechanistic drivers of species interactions is limited. Experimental study designs that utilize camera traps uniquely allow for testing hypothesized mechanisms that drive predator and prey behavior, incorporating environmental realism not possible in the lab while benefiting from the distinct capacity of camera traps to generate large data sets from multiple species with minimal observer interference. However, such pairings of camera traps with experimental methods remain underutilized. We review recent advances in the experimental application of camera traps to investigate fundamental mechanisms underlying predator-prey ecology and present a conceptual guide for designing experimental camera trap studies. Only 9% of camera trap studies on predator-prey ecology in our review mention experimental methods, but the application of experimental approaches is increasing. To illustrate the utility of camera trap-based experiments using a case study, we propose a study design that integrates observational and experimental techniques to test a perennial question in predator-prey ecology: how prey balance foraging and safety, as formalized by the risk allocation hypothesis. We discuss applications of camera trap-based experiments to evaluate the diversity of anthropogenic influences on wildlife communities globally. Finally, we review challenges to conducting experimental camera trap studies. Experimental camera trap studies have already begun to play an important role in understanding the predator-prey ecology of free-living animals, and such methods will become increasingly critical to quantifying drivers of community interactions in a rapidly changing world. We recommend increased application of experimental methods in the study of predator and prey responses to humans, synanthropic and invasive species, and other anthropogenic disturbances.
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With climate change and urban development, water systems are changing faster than ever. Currently, the ecological status of water systems is still judged based on single point measurements, without taking into account the spatial and temporal variability of water quality and ecology. There is a need for better and more dynamic monitoring methods and technologies. Aquatic drones are becoming accessible and intuitive tools that may have an important role in water management. This paper describes the outcomes, field experiences and feedback gathered from the use of underwater drones equipped with sensors and video cameras in various pilot applications in The Netherlands, in collaboration with local water managers. It was observed that, in many situations, the use of underwater drones allows one to obtain information that would be costly and even impossible to obtain with other methods and provides a unique combination of three-dimensional data and underwater footage/images. From data collected with drones, it was possible to map different areas with contrasting vegetation, to establish connections between fauna/flora species and local water quality conditions, or to observe variations of water quality parameters with water depth. This study identifies opportunities for the application of this technology, discusses their limitations and obstacles, and proposes recommendation guidelines for new technical designs
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Large floating projects have the potential to overcome the challenge of land scarcity in urban areas and offer opportunities for energy and food production, or even for creating sustainable living environments. However, they influence the physical, chemical, biological and ecological characteristics of water bodies. The interaction of the floating platforms affect multiple complex aquatic processes, and the potential (negative/positive) effects are not yet fully understood. Managing entities currently struggle with lack of data and knowledge that can support adequate legislation to regulate future projects.In the Netherlands the development of small scale floating projects is already present for some years (e.g. floating houses, restaurants, houseboats), and more recently several large scale floating photovoltaic plants (FPV) have been realized. Several floating constructions in the Netherlands were considered as case-studies for a data-collection campaign.To obtain data and images from underneath floating buildings, underwater drones were equipped with cameras and sensors. The drones were used in multiple locations to scan for differences in concentrations of basic water quality parameters (e.g. dissolved oxygen, electrical conductivity, algae, light intensity) from underneath/near the floating structures, which were then compared with data from locations far from the influence of the buildings. Continuous data was also collected over several days using multi-parameter water quality sensors permanently installed under floating structures.
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Large floating projects have the potential to overcome the challenge of land scarcity in urban areas and offer opportunities for energy and food production, or even for creating sustainable living environments. However, they influence the physical, chemical, biological and ecological characteristics of water bodies. The interaction of the floating platforms affect multiple complex aquatic processes, and the potential (negative/positive) effects are not yet fully understood. Managing entities currently struggle with lack of data and knowledge that can support adequate legislation to regulate future projects. In the Netherlands the development of small scale floating projects is already present for some years (e.g. floating houses, restaurants, houseboats), and more recently several large scale floating photovoltaic plants (FPV) have been realized. Several floating constructions in the Netherlands were considered as case-studies for a data-collection campaign. To obtain data and images from underneath floating buildings, underwater drones were equipped with cameras and sensors. The drones were used in multiple locations to scan for differences in concentrations of basic water quality parameters (e.g. dissolved oxygen, electrical conductivity, algae, light intensity) from underneath/near the floating structures, which were then compared with data from locations far from the influence of the buildings. Continuous data was also collected over several days using multi-parameter water quality sensors permanently installed under floating structures. Results show some differences in concentrations of water quality parameters between open water and shaded areas were detected, and some interesting relations between parameters and local characteristics were identified. Recommendations are given, in order to minimise the undesired impacts of floating platforms. Considering the complexity of the interactions between water quality parameters and the influence of the surrounding environment it is recommended to continue and to improve the monitoring campaign (e.g. include new parameters).
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Metropolitan Cebu, the third largest agglomeration in the Philippines with a population of approximately 3 million, faces significant challenges in managing domestic wastewater and solid waste. This mismanagement has led to the pollution of its water bodies, including the Mahiga Creek and the Butuanon River, the latter of which was declared dead in 1992 and can no longer support flora and fauna. Between 2017 and 2025, seven international River Challenge Climate Cafes were conducted by Dutch universities of Applied Sciences and Filipino universities . During these events, teams of young professionals assessed the upstream, midstream, and downstream stretches of Metro Cebu's rivers and evaluated the vulnerability of 12 urban poor communities living along these rivers. The primary aim of these rapid appraisals was to raise awareness among community members, local governments, and students, as well as to build capacity. Throughout the process, there was a shift from merely gathering data on pollution levels to engaging the community, identifying risks, and finding feasible solutions to mitigate these risks. Various methods were employed to measure water quality, river width, river discharge, flood heights, ecology, plastic waste pollution, and residents' perceptions. The results were shared online via Climatescan.org with the global climate adaptation community. The findings demonstrate that river challenges are effective tools for creating context-rich learning environments for students, with more than 250 participants. The River Challenge Climate Cafe enable young professionals, primarily with technical backgrounds, to gain firsthand field experience, exposure to environmental degradation, severe pollution, and vulnerable communities, thereby enhancing their environmental awareness. Additionally, the river scan challenge proves to be a valuable tool for increasing awareness of river pollution and promoting rehabilitation effortsHow to cite: Heikoop, R., Boogaard, F., Abrenica, B., Fornis, R., Borgonia, K., Ledesma, D., Nasara, J., Boer, E., and Oudendammer, T.: Enhancing Environmental Awareness Through River Challenges: A Case Study of Metropolitan Cebu, Philippines , 12th International Conference on Urban Climate, Rotterdam, The Netherlands, 7–11 Jul 2025, ICUC12-1052, https://doi.org/10.5194/icuc12-1052, 2025.
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This report is the second in a series of three reports named Value Added Planning, consisting of three unique, but interconnected tools, namely the Green Credit Tool, the Workbench Method and Value Added Planning, These tools have been developed and/or tested in the context of the European INTERREG programme: VALUE (INTERREG IVB North West Europe - Valuing Attractive Landscapes in the Urban Economy), in which the municipality of Amersfoort is involved. Aim of this programme is to understand how green space in urban centres can become more competitive with other urban functions. In this context, the municipality of Amersfoort has introduced the interactive method named Workbench Spatial Quality (Werkbank Ruimtelijke Kwaliteit in Dutch) in their spatial design in several areas in their municipality. The Workbench Spatial Quality (to be referred to as Workbench) has been applied on two cases in Amersfoort: Park Randenbroek and Vathorst NW. In this report the Workbench as applied in Amersfoort is evaluated. Research was done on the basis of literature research, case-material and interviews performed with several experts. Furthermore, research was done by students at the Wageningen University and Research Centre (WUR). Part of the evaluation in this report makes use of a quick scan of 19 Dutch cases. The question addressed in this report is: 1.How was the Workbench Spatial Quality applied in Amersfoort? 2.Can the Workbench contribute to sustainable spatial planning?
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Deze maand doken Nederlandse onderwater drones op in de Indonesische nationale pers. Onder grote belangstelling las men dat een consortium van Indonesische en Nederlandse organisaties (Tauw, INDYMO, TU Delft en water & milieulab WLN Indonesia) start met een grootschalig internationaal onderzoek naar oplossingen voor de slechte kwaliteit van oppervlaktewater in dichtbevolkte gebieden, zoals Surabaya. Hierbij werden innovatieve meetmethoden ingezet, waaronder aquatische drones. De eerste resultaten wijzen uit welke vervuilende bronnen aangepakt moeten worden: industrieel en huishoudelijk afvalwater). Tijdens de interactie bij de innovatieve metingen groeide de betrokkenheid van de partijen en werd duidelijk welke stakeholders betrokken moeten worden bij het opstellen - en uitvoeren - van nieuwe regelgeving, alsook het creëren van maatschappelijke bewustwording over het belang van een duurzame gezonde leefomgeving. Hierbij zullen de belangrijkste lessen die Nederland in de laatste decennia geleerd heeft worden toegepast, ook Nederland kent een geschiedenis van zuurstofloze rivieren en grachten vol vuilnis. De ‘lessons learnt’ omtrent bewustwording, regelgeving en innovatieve meettechnieken zijn van groot belang bij internationale kennisuitwisseling van de Nederlandse topsector water, een van de belangrijkste exportproducten van Nederland.
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Urban flooding has become a key issue for many cities around the world. The project ‘INnovations for eXtreme Climatic EventS’ (INXCES) developed new innovative technological methods for risk assessment and mitigation of extreme hydroclimatic events and optimization of urban water-dependent ecosystem services at the catchment level. DEMs (digital elevation maps) have been used for more than a decade now as quick scan models to indicate locations that are vulnerable to urban flooding. In the last years the datasets are getting bigger and multidisciplinary stakeholders are becoming more demanding and require faster and more visual results. In this paper, the development and practical use of DEMs is exemplified by the case study of Bergen (Norway), where flood modelling using DEM is carried out in 2017 and in 2009. We can observe that the technology behind tools using DEMs is becoming more common and improved, both with a higher accuracy and a higher resolution. Visualization tools are developed to raise awareness and understanding among different stakeholders in Bergen and around the world. We can conclude that the evolution of DEMS is successful in handling bigger datasets and better (3D) visualization of results with a higher accuracy and a higher resolution. With flood maps the flow patterns of stormwater are analysed and locations are selected to implement (sub-)surface measures as SuDS (Sustainable Urban Drainage systems) that store and infiltrate stormwater. In the casestudy Bergen the following (sub-)surface SuDS have been recently implemented with the insights of DEMS: settlement storage tank, rainwater garden, swales, permeable pavement and I/T-drainage. The research results from the case study Bergen will be shared by tools to stimulate international knowledge exchange. New improved DEMs and connected (visualization) tools will continue to play an important role in (sub-)surface flood management and climate resilient urban planning strategies around the world.
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