Crisis management requires stakeholders to not only show strategic, organisational preparedness for crisis events (e.g. by systematising and professionalizing coping work), but also to develop skills to deal with unanticipated events and other stakeholders involved in the same crisis. They should not only rely on established information flows and behaviour patterns, but should be able to deal w...

Channel dredging has become a common phenomenon across several fluvial systems. Pits dredged in the riverbank can influence downstream turbulence and affect bank slope central channel morphodynamics. Erodible bed experiments were conducted laboratory flume having cross section with three different slopes, i.e., 25°, 31°, 40° without mining pit. Flow over near toe was most affected by pit excava...

User participation seems especially important in the development of collaborative work systems where the technology is used by a work group to coordinate their joint activities. Using a sample of 163 collaborative and 239 noncollaborative applications, this research focuses on (1) Is user participation more effective in collaborative applications? (2) What specific decision issues enhance user ...

Longitudinal distribution of Mimagoniates microlepis and Hoplias malabaricus was analyzed in a coastal stream system in Southeast Brazil. Six sites were sampled by electrofishing in seven months, from July 94 to July 95. Densities of M. microlepis, and H. malabaricus and its prey (Poecilia vivipara, Deuterodon sp. and Astyanax janeiroensis) were estimated by the Zippin method; environmental var...

ion and impoundments. It is widely acknowledged that alterations to flow regime impact on riverine ecosystems. As a result, hydromorphology, which includes the hydrological regime, is embedded within the WFD as a supporting element to achieve good ecological status (GES). Environmental flow releases from impoundments such as reservoir dams will need to be implemented to mitigate impacts from th...

This study evaluated the relationship between abiotic flow characteristics and habitat quality. Habitat quality was assessed using Instream Flow Incremental Methodology (IFIM), which uses bioindication. Brown trout selected as a bioindicator because of its sensitivity to morphological changes occurrence in sufficient reference reaches. The correlation stream area-weighted suitability (AWS), rep...

Ecological flow (E-flow) determination is an essential component of stream management and the preservation aquatic ecosystems within a watershed. E-flow should be determined while considering overall status watershed, including hydrological cycle, hydraulic facility operation, ecology. The purpose this study to determine by watershed through coupled modeling with SWAT PHABSIM. was calibrated en...