The role of river flow in the migration of adult Atlantic salmon, Salmo salar, through estuaries and rivers
Article first published online: 15 NOV 2012
© 2012 Crown copyright. This article is published with the permission of the Controller of HMSO and the Queen's Printer for Scotland.
Fisheries Management and Ecology
Volume 19, Issue 6, pages 537–547, December 2012
How to Cite
MILNER, N. J., SOLOMON, D. J. and SMITH, G. W. (2012), The role of river flow in the migration of adult Atlantic salmon, Salmo salar, through estuaries and rivers. Fisheries Management and Ecology, 19: 537–547. doi: 10.1111/fme.12011
- Issue published online: 15 NOV 2012
- Article first published online: 15 NOV 2012
- conceptual model;
- river flow
An assumption of Atlantic salmon, Salmo salar L., management is that river flow influences their upstream migration; but the quantitative relationships between flow and movements are variable and inconsistent. A consensus has emerged that standard rules on salmon flow needs for water management across all rivers are unattainable. However, this does not preclude an underlying conceptual framework that should guide a consistent scientific basis to flow management for protecting salmon. This article examines the potential for a conceptual framework from a British Isles perspective, assuming that upstream migration is an emergent property from selection to optimise lifetime fitness. The template for this adaptation is the diversity of river types and hydro-morphology in British rivers coupled with life-history and migration adaptations that may be influenced by flow-related factors. Models of adult salmon migration through estuaries and rivers are outlined that may provide a basis for developing generic guidance.