Suchergebnisse

This article explores the impact of public entrepreneurship on the Cheonggye Stream Restoration Project (CSRP) as an urban renewal project. The article presents the four elements of entrepreneurship: innovativeness, risk-taking, proactiveness, and network governance. Innovativeness was an important motive to start the CSRP. The risk-taking and proactive leadership of the mayor had a positive effect on boosting internal cohesion among public employees and implementing the CSRP. Network governance helped manage conflicts among the related stakeholders and attract support to the CSRP. The article suggests that it was the effort to share the spirit and practice of public (or social) entrepreneurship with the people -- including the general citizens, public servants, experts, and interest groups -- that eventually led to the success of the restoration project. Adapted from the source document.

This article explores the impact of public entrepreneurship on the Cheonggye Stream Restoration Project (CSRP) as an urban renewal project. The article presents the four elements of entrepreneurship: innovativeness, risk-taking, proactiveness, and network governance. Innovativeness was an important motive to start the CSRP. The risk-taking and proactive leadership of the mayor had a positive effect on boosting internal cohesion among public employees and implementing the CSRP. Network governance helped manage conflicts among the related stakeholders and attract support to the CSRP. The article suggests that it was the effort to share the spirit and practice of public (or social) entrepreneurship with the people -- including the general citizens, public servants, experts, and interest groups -- that eventually led to the success of the restoration project. Adapted from the source document.

This research is part of the SWITCH Project (Sustainable Water Management Improves Tomorrow's Cities' Health), which is coordinated by UNESCO and constitutes of a 32 institutions working net. Among these institutions are the Belo Horizonte Government (PBH) and Universidade Federal de Minas Gerais (UFMG). One of the interventions conducted by PBH is the Drenurbs Program that aims at the restoration and environmental sanitation of municipal watersheds. Considering the importance of assessing the stream restoration interventions proposed by Drenurbs, the main objective of this paper is to assess the effectiveness of the results obtained by the Baleares creek restoration project in Belo Horizonte. The following assessment tools were used: (i) monitoring of water quality (physical and chemical parameters); and (ii) survey with the population in the watershed. Tools (i) were assessed in two distinct periods: pre-restoration (September 2003-November 2006) and postrestoration (February 2008- February 2009). The survey was done once in October 2008. The water quality results revealed a significant improvement in all assessed parameters between pre restoration and post restorations periods, besides a change in the patterns of the average seasonal concentrations of the monitored indicators. The survey indicated that the results of the intervention were well accepted by the population, with good perspectives in relation to the deployment of similar projects in other urban watersheds. However, the preference for a "sanitary avenue" is still relevant. The results could subsidize future assessments of the interventions realized by the Drenurbs in Baleares creek.

There are many sources of urban river degradation from channel straightening and culverting for flood control and development, to point and non-point source pollution, and altered flow regimes due to urbanization and increased impervious surfaces. In this study, we focus on the hydrologic impact of impervious surfaces in an urban watershed in the East Bay area. We used the Water Framework Directive (WFD), recent legislation in Europe, to understand how a watershed approach and systematic waterbody characterization can guide restoration efforts. Specifically, we applied the WFD to Sausal Creek Watershed and developed a conceptual restoration plan that incorporates watershed-scale low impact designs (LID) to restore a natural flow regime and in-stream restoration to enhance the physical habitat. We modeled the change in runoff due to urbanization, and calculated the total area required to mitigate for stormwater. Our results show a nearly two-fold increase in peak flow from pre-development to today. To mitigate for increased impervious surfaces 38-57% of the basin would need to drain to LID sites. We compared the cost of LID with the cost of in-stream restoration and found in-stream restoration of the entire three mile channel would be equivalent to treating one-sixth of the watershed with LID. Finally, we developed a short-term and long-term program of measures to restore Sausal Creek.

AbstractStreams in North Rhine‐Westphalia (Germany) are frequently impacted by hydromorphological degradation leading to a loss of sensitive species and a reduction in diversity. These findings mean that the final objective of the European Water Framework Directive to achieve the good ecological status will be failed for a large number of streams. In a holistic approach, a new concept, considering the cost efficiency, has been developed to enhance habitats by morphological changes. This guide serves as a basis for stream restoration projects. The theoretical background is that near‐natural sections influence adjacent sections of medium habitat quality positively by migration of type‐specific sensitive organisms. The preconditions are a local taxa richness in the catchment area, the reduction of nutrients and organic matter, and the guarantee of free movement. This so‐called 'spreading effect' can be measured upstream and downstream. The length of by these means valourized sections depends on the stream type and on the biological quality component.

Despite our growing awareness of the vital role they play in the global environment, wetlands remain among the most endangered ecosystems on Earth and are still being destroyed and degraded at an alarming rate. This much-needed publication, which includes contributions from leading researchers and practitioners, presents a holistic perspective on the restoration of wetland ecosystems such as shallow lakes, streams, floodplains and bogs. Through the use of carefully chosen case studies, the authors examine European wetland restoration projects from Scandinavia to Bulgaria and from Ireland to Belarus, focusing on the lessons they can teach to a new generation of conservationists. As well as reviewing the sum of current knowledge on the subject, the text is a store of practical know-how, covering a wide range of conservation approaches and techniques. It analyzes the major problems in the field and identifies key principles for achieving sustainability in wetland restoration. The topics covered include: the role of wetlands in landscape functioning, human interference with natural processes such as water and matter cycles and energy dissipation, the impact of land use on global problems such as climate change, floods and droughts, and the role played by diversity in wetland functioning. The work shows that without sustainable land use over the totality of their catchment areas, and without cohesive inter-agency cooperation, individual restoration projects will have a short life span. The balance between scientific background and practical restoration makes this book a valuable resource for scientists as well as wetland managers, decision makers and land use planners, as well as students of ecology, nature conservation and environmental protection.