Determination of flow regimes for protection of in-river values in New Zealand: an overview

Competition for water has intensified. Determining when, and how much, water needs to be left for in-river values is a challenge world-wide. In New Zealand there is now a well established connection between the flow regime, as defined by the magnitude and variability of flows, and suitability for in...

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Bibliographic Details
Published inEcohydrology & Hydrobiology Vol. 8; no. 1; pp. 17 - 29
Main Authors Biggs, Barry J.F., Ibbitt, Richard P., Jowett, Ian G.
Format Journal Article
LanguageEnglish
Published Elsevier Urban & Partner Sp. z o.o 2008
Subjects
eels
environmental flows
invertebrates
river ecology
trout
water allocation
New Zealand
trout
eels
environmental flows
invertebrates
river ecology
water allocation
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Summary:Competition for water has intensified. Determining when, and how much, water needs to be left for in-river values is a challenge world-wide. In New Zealand there is now a well established connection between the flow regime, as defined by the magnitude and variability of flows, and suitability for in-river values. Physical habitat requirements of the biota have been defined and related to overall flow regimes (e.g., mountain fed, hill fed and lowland fed). Key to this is understanding both minimum flow and variability requirements of the biota. This paper overviews some of this science and illustrates how this knowledge has helped resolve river resource management issues in New Zealand.
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ISSN:1642-3593
DOI:10.2478/v10104-009-0002-3