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O desenvolvimento de ferramentas de simulação, como os jogos de papéis, pressupõe a integração das várias representações e conhecimentos, o que garante a sua legitimidade e a possibilidade de os utilizar como plataforma de mediação na discussão dos conflitos socioambientais. Este artigo discute a utilização da abordagem de modelagem de acompanhamento no desenvolvimento de dois jogos de papéis sobre a gestão da água e do solo em mananciais periurbanos da Região Metropolitana de São Paulo (RMSP).The development of simulation tools like role-playing games require the integration of some knowledge and several representations which guarantee its legitimacy and the possibility to be used as a mediation platform in collective discussions about environmental conflicts. The paper presents and discusses the use of the companion modeling approach in the development of two role-playing games dealing with water and land management in the periurban catchment of the metropolitan region of São Paulo.

Land-system change, freshwater use, biodiversity loss, and changes in biogeochemical flows affect the resilience of the Earth system as a whole. Effective communication between scientists and policy makers is critical in addressing these challenges. Simulation models can be used as integrators of knowledge and data, and play a key role in facilitating effective boundary work between science and policy. Key issues identified are the reliability of model outcomes and the acknowledgement of their uncertainty. However, the use of models provides an advantage when analysing scenarios. Integrated catchment models can provide feedback about joint interpretation of the data and conceptual understanding, resulting in the identification of data needs. The difficulties related to improving how science informs policy is one of communication and negotiation at the boundary, and models can assist in the co-production between researchers and decision makers.

PAST AND PRESENT OF WATER RESOURCE MANAGEMENT POLICIES IN BRAZIL. Throughout the country’s history, but particularly with the 20th century’s rapid industrialisation, economic development led to Brazilian society’s gradual estrangement from the environment. Industrialisation called for a mode of production that exploits water and society as tools for the accumulation of capital. Escalating water scarcity and uneven access to water are symptomatic of this growing antagonism between society and nature. Recent legal and institutional changes have promoted a new approach to water management. One of the new policy instruments is charging for bulk water use in order to improve efficiency and recover investment costs. Charges on water have been supported by a strategic alliance between market forces and conservative environmentalists. However, in practice, the new management framework only reproduces the same previous rationale of water commodification that in the past generated serious socio-environmental distortions.

Worldwide, water is essential for maintaining an adequate agricultural production and fostering a sustainable ecosystem for humanity alongside diverse flora, fauna, and microbial life. However, the intensification of anthropogenic activities, the occurrence of climate variability, and the presence of environmental issues are still threatening the quantity and quality of fresh water. Therefore, integrated water management is critical for the sustainable development of a region. This Agrociencia Uruguay Special Issue on “Advances in Water in Agroscience” is designed to draw attention to new concepts, approaches, methodologies, and novel applications aiming to improve sustainable and integrated water resource management. This Special Issue contains fifteen publications sorted into the following macro fields: irrigation and water management, integrated catchment management, and water quality and environmental sustainability.

Copyright of Journal of Water Resources / Recursos Hídricos is the property of Associacao Portuguesa dos Recursos Hidricos and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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Copyright of Desenvolvimento e Meio Ambiente is the property of Universidade Federal do Parana and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Sustainability in Debate / Sustentabilidade em Debate is the property of University of Brasilia, Center for Sustainable Development and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

ABSTRACT Identifying and ranking nutrient loss risk areas are important steps towards integrated catchment management. This study aimed to apply the P index model at the Posses catchment, south of the state of Minas Gerais, Brazil. We applied the P index for the current land use at the Posses catchment and for two hypothetical scenarios: scenario 1, in which P fertilizer was applied to all land uses, except for native forests; and scenario 2, which considered the use of P fertilizer as in scenario 1, and that the Environmental Protection Areas referring to the riparian forests and springs were totally restored. Considering current land use, almost the whole catchment area (91.4%) displayed a low P loss risk. The highest P index was associated to croplands and eucalyptus plantations. Regarding scenario 1, areas under pasture fell into the low (15.1%), medium (45.5%), high (27.1%) and very high (12.3%) P index categories. Environmental Protection Areas on scenario 2 decreased the P loss risk from the scenario 1 in 37.6%. Hence, the model outputs indicate that the reforestation of buffer zones can decrease P loss risk in the case increasing use of P fertilizer. The P index model is a potential support tool to promote judicious use of fertilizers and conservation practices at the Posses catchment.