The ecohydrology of stream networks

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceeding

Abstract

Stream ordering approaches to the study of entire stream networks are relatively simple and provide only crude estimations of the physical makeup of river ecosystems. These fail to acknowledge the importance of the hierarchical organisation of rivers and consequently use very crude variables when characterising stream networks. We provide an alternative typology for characterising the physical structure of rivers, which focuses on a specific level within the geomorphic river hierarchy, and employs a set of regional, catchment and valley criteria for developing a quantitative river characterisation scheme. Fifteen geomorphic variables were extracted from digital data using automated geographic information system modules and evaluated using a series of multivariate analyses. This allowed distinct river types within a stream network to emerge. Our approach was demonstrated in the Ovens River, Australia. The physical structure of the Ovens River stream network was further analysed using a series of community metrics: richness, composition and diversity of river types.

Details

Authors
External organisations
  • University of Canberra
  • University of New England, Australia
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Oceanography, Hydrology, Water Resources

Keywords

  • Complex systems, Geographic information system (GIS), Physical diversity, River characterisation, Riverine networks
Original languageEnglish
Title of host publicationEcohydrology of Surface and Groundwater Dependent Systems: Concepts, Methods and Recent Developments
PublisherIAHS Press
Pages127-136
Number of pages10
Volume328
ISBN (Print)9781901502992
Publication statusPublished - 2009
Publication categoryResearch
Peer-reviewedYes
Externally publishedYes
EventSymposium JS.1 at the Joint Convention of the International Association of Hydrological Sciences, IAHS and the International Association of Hydrogeologists, IAH - Hyderabad, India
Duration: 2009 Sep 62009 Sep 12

Publication series

NameIAHS-AISH publication
PublisherIAHS
ISSN (Electronic)0144-7815

Conference

ConferenceSymposium JS.1 at the Joint Convention of the International Association of Hydrological Sciences, IAHS and the International Association of Hydrogeologists, IAH
CountryIndia
CityHyderabad
Period2009/09/062009/09/12