3 years ago

Integrating process-based flow and temperature models to assess riparian forests and temperature amelioration in salmon streams.

Chris Soulsby, Iain Archibald Malcolm, Willem Bastiaan Buddendorf, Luca Fabris
The importance of riparian tree cover in reducing energy inputs to streams is increasingly recognised in schemes to mitigate climate change effects and protect fresh water ecosystems. Assessing different riparian management strategies requires catchment-scale understanding of how different planting scenarios would affect the stream energy balance, coupled with a quantitative assessment of spatial patterns of streamflow generation. Here, we use the physically-based MIKE SHE model to integrate simulations of catchment-scale runoff generation and in-stream hydraulics with a heat transfer model. This was calibrated to model the spatio-temporal distribution of hourly stream water temperature during warm low flow periods in a Scottish salmon stream. The model was explored as a “proof of concept” for a tool to investigate the effects of riparian management on high stream water temperatures that could affect juvenile Atlantic salmon. Uncertainty was incorporated in to the assessment using the Generalised Likelihood Uncertainty Estimation (GLUE) approach. Results showed that by decreasing both the warming (daylight hours) and the cooling (night-time hours) rates, forest cover leads to a reduction of the temperature range (with a delay of the time to peak by up to 2 hours) and can therefore be effectively used to moderate projected climate change effects. The modelling presented here facilitated the quantification of potential mitigating effects of alternative riparian management strategies and provided a valuable tool that has potential to be utilised as an evidence base for catchment management guidance.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/hyp.11454

You might also like
Discover & Discuss Important Research

Keeping up-to-date with research can feel impossible, with papers being published faster than you'll ever be able to read them. That's where Researcher comes in: we're simplifying discovery and making important discussions happen. With over 19,000 sources, including peer-reviewed journals, preprints, blogs, universities, podcasts and Live events across 10 research areas, you'll never miss what's important to you. It's like social media, but better. Oh, and we should mention - it's free.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.