Angela Arthington

Angela Arthington

Angela Arthington, Australia

Angela Arthington is a research ecologist focusing on river and fish conservation, especially through the science and management of environmental flows. Her research findings underpin several globally adopted environmental flow frameworks (DRIFT, ELOHA). Environmental flows research culminated in ““Environmental Flows: Saving Rivers in the Third Millennium” (2012, University of California Press). Angela received the honorary “Making a Difference Award” (2015) from the US Instream Flow Council. Angela has edited three Special Issues on biodiversity conservation and environmental flows, and produced over 220 papers and book chapters, and numerous research and consultancy reports. Her work has made a real world difference in the protection and restoration of flows for fragile river and floodplain ecosystems and conservation of endangered species.

Presentation Title: Reflections on ELOHA – Ecological Limits of Hydrologic Alteration: expanding its scope

The e-flows framework known as ELOHA (Ecological Limits of Hydrologic Alteration) makes a novel contribution to holistic methods for assessment of environmental flows at regional scale (e.g. bioregional, jurisdiction, continent). The framework aims to quantify the effects of hydrologic alteration on rivers of distinctive hydrological character as determined by flow classification. It addresses the demand for transferable eco-hydrological relationships and environmental flow guidelines for river types (hydrological classes), rather than managing for the ‘uniqueness’ of each river’s flow regime. Applications of the ELOHA framework are increasing, with significant innovation in four main features: classification of hydrological regimes, identifying ecological differences and alterations across flow classes and rivers, development of flow-ecology relationships, and understanding the ecological outcomes of particular flow regime alterations. This contribution will reflect on the utility of ELOHA, and suggest some ways in which it can be modified to address issues such as the role of stream hydraulics in eco-hydrological relationships, how to apply ELOHA to include stakeholder and indigenous perspectives on river values and e-flow targets, and the application of outcomes in both river protection /conservation and river restoration.

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