TSAIs can inhabit a variety of habitat types, including the shoreline, the surface of exposed gravel bars, unsaturated gravels, dry riverbeds, riparian zones, and floodplains. They can support a diverse, and often abundant, terrestrial and semi-aquatic invertebrate (TSAI) fauna, which has been poorly explored due to its position at the fringe between aquatic and terrestrial disciplines. Intermittent rivers and ephemeral streams (IRES), which cease flow and/or dry at some point, are the most abundant waterways on earth, and are found on every continent. And we must act quickly, because it is already late and until now practically nothing has been done to respect, protect and recover these vital fluvial systems on our land. It is a book that can offer ideas to the people responsible for managing them, but is aimed at the whole of society, because the challenge is very complex: we have to recover epheme- ral channels by improving understanding and raising awareness. This guide warns the reader about the multiple impacts these channels are subjected to, it informs us about their important Mediterranean heritage, which is so underestimated and ignored and it proposes 33 good practices for their management and recovery. And it is urgent for us to work on their management, recovery and conservation, because overall they are subjected to strong pressures and are being greatly damaged. Their promotion, the recognition of their role, their hydromorphological values and ecosystemic services are all absolutely essential for understanding their level of resilience and contribution to adapting to climate change. They are fundamental natural systems in the hydrological cycle for transporting water, sediment and nutrients, and, therefore, are excellent indicators of climate and global change. Ephemeral channels (ramblas or dry channels - except in sudden occasional flash floods) are prevalent in the Mediterranean, where they make up most of the fluvial network.
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March 2023
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