This book comprises six chapters prepared by the COST Action Circular City. The Action aims to establish a network of researchers and stakeholders testing the hypothesis that: ‘A circular flow system that implements nature-based solutions (NBS) for managing nutrients and resources within the urban biosphere will lead to a resilient, sustainable and healthy urban environment.’ They are the starting point towards deeper exploration of how NBS can contribute to circular cities, gathering state-of-the-art knowledge of one of the biggest COST Actions so far.

In Focus – a book series that showcases the latest accomplishments in water research. Each book focuses on a specialist area with papers from top experts in the field. It aims to be a vehicle for in-depth understanding and inspire further conversations in the sector.

Editorial
Guenter Langergraber, Nataša Atanasova

Implementing nature-based solutions for creating a resourceful circular city
Guenter Langergraber, Bernhard Pucher, Lena Simperler, Johannes Kisser, Evina Katsou, Devi Buehler, Maria Carmen Garcia Mateo, Nataša Atanasova

Enhancing the circular economy with nature-based solutions in the built urban environment: green building materials, systems and sites
David Pearlmutter, Dimitra Theochari, Thomas Nehls, Pedro Pinho, Patrizia Piro, Alisa Korolova, Spiros Papaefthimiou, Mari Carmen Garcia Mateo, Cristina Calheiros, Irene Zluwa , Ulrike Pitha, Paul Schosseler, Yaakov Florentin, Shahar Ouannou, Erez Gal, Andreas Aicher, Killian Arnold, Erika Igondová, Bernhard Pucher

A review of nature-based solutions for urban water management in European circular cities: a critical assessment based on case studies and literature
Hasan Volkan Oral, Pedro Carvalho, Magdalena Gajewska, Nadia Ursino, Fabio Masi, Eric D. van Hullebusch, Jan K. Kazak, Alfonso Exposito, Giulia Cipolletta, Theis Raaschou Andersen, David Christian Finger, Lena Simperler, Martin Regelsberger, Vit Rous, Matej Radinja, Gianluigi Buttiglieri, Pawel Krzeminski, Anacleto Rizzo, Kaveh Dehghanian, Mariyana Nikolova, Martin Zimmermann

A review of nature-based solutions for resource recovery in cities
Johannes Kisser, Maria Wirth, Bart De Gusseme, Miriam Van Eekert, Grietje Zeeman, Andreas Schoenborn, Björn Vinnerås, David C. Finger, Sabina Kolbl Repinc, Tjaša Griessler Bulc, Aida Bani, Dolja Pavlova, Lucian C. Staicu, Merve Atasoy, Zeynep Cetecioglu, Marika Kokko, Berat Z. Haznedaroglu, Joachim Hansen, Darja Istenič, Eriona Canga, Simos Malamis, Margaret Camilleri-Fenech, Luke Beesley

Urban agriculture as a keystone contribution towards securing sustainable and healthy development for cities in the future
S. L. G. Skar, R. Pineda-Martos, A. Timpe, B. Pölling, K. Bohn, M. Külvik, C. Delgado, C. M.G. Pedras, T. A. Paço, M. Ćujić, N. Tzortzakis, A. Chrysargyris, A. Peticila, G. Alencikiene, H. Monsees, R. Junge

Transformation tools enabling the implementation of nature-based solutions for creating a resourceful circular city
Evina Katsou, Chrysanthi-Elisabeth Nika, Devi Buehler, Bruno Marić, Boldizsár Megyesi, Eric Mino, Javier Babí Almenar, Bilge Bas, Dženan Bećirović, Sabina Bokal, Maja Đolić, Nilay Elginöz, Gregoris Kalnis, Mari-Carmen Garcia Mateo, Maria Milousi, Alireza Mousavi, Iva Rinčić, Agatino Rizzo, Ignasi Rodriguez-Roda, Benedetto Rugani, Alvija Šalaševičienė, Ramazan Sari, Peyo Stanchev, Emel Topuz, Nataša Atanasova

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