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Food web responses to hydrologic regimes in floodplain rivers

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Presentation on theme: "Food web responses to hydrologic regimes in floodplain rivers"— Presentation transcript:

1 Food web responses to hydrologic regimes in floodplain rivers
Darren Ryder, Ben Gawne, Robert J. Rolls, Darren Baldwin, Nick Bond, Rebecca Lester, Barbara Robson, Ross Thompson BRISBANE, AUSTRALIA | SEPTEMBER 2017 MANAGED BY

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3 Disturbance for community composition and dynamics,
Provide cues for major life-history events, Influence food webs and energetics

4 Murray-Darling Basin Environmental Water Knowledge and Research (EWKR) Project
Research to support environmental watering: a collaborative approach in the MDB Funded through the Australian Governments Commonwealth Environmental Water Office Four themes: Vegetation Fish Water birds Food webs BRISBANE, AUSTRALIA | SEPTEMBER 2017 MANAGED BY

5 Conceptual understanding of hydrological drivers of trophic dynamics
Multitude of ways to quantitatively and qualitatively analyse trophic dynamics Require a framework for evaluating foodweb attributes into monitoring BRISBANE, AUSTRALIA | SEPTEMBER 2017 MANAGED BY

6 What do key conceptual models of riverine functioning tell us about energy flow under different hydrological components? Models: River continuum concept, Flow pulse concept, Serial discontinuity concept, Riverine productivity model, River wave concept, Riverine ecosystem synthesis, Reciprocal provisioning model, Hydraulic food chain models BRISBANE, AUSTRALIA | SEPTEMBER 2017 MANAGED BY

7 What do key conceptual models of riverine functioning tell us about energy flow under different hydrological components? A shift to thinking to consider spatially and/or temporally dynamic Nutritional Landscape? BRISBANE, AUSTRALIA | SEPTEMBER 2017 MANAGED BY

8 Multitude of ways to quantitatively and qualitatively analyse trophic dynamics
Robson et al Modelling food-web mediated effects of hydrological variability and environmental flows. Water Research, 124. BRISBANE, AUSTRALIA | SEPTEMBER 2017 MANAGED BY

9 Multitude of ways to quantitatively and qualitatively analyse trophic dynamics
Robson et al Modelling food-web mediated effects of hydrological variability and environmental flows. Water Research, 124. BRISBANE, AUSTRALIA | SEPTEMBER 2017 MANAGED BY

10 Multitude of ways to quantitatively and qualitatively analyse trophic dynamics
Robson et al Modelling food-web mediated effects of hydrological variability and environmental flows. Water Research, 124. BRISBANE, AUSTRALIA | SEPTEMBER 2017 MANAGED BY

11 Require a framework for evaluating foodweb attributes into monitoring
= BRISBANE, AUSTRALIA | SEPTEMBER 2017 MANAGED BY

12 Require a framework for evaluating foodweb attributes into monitoring – incorporating existing monitoring BRISBANE, AUSTRALIA | SEPTEMBER 2017 MANAGED BY

13 How can flow be used to create times or places that can unduly influence fish and bird recruitment?
What basal and secondary resources can underpin fish and bird breeding success? Rolls et al A framework for evaluating food-web responses to hydrological manipulations in riverine systems. J. Env Management, 203. BRISBANE, AUSTRALIA | SEPTEMBER 2017 MANAGED BY

14 Environmental Water and Knowledge Research – Foodweb Theme
Improve conceptual understanding of hydrological drivers of trophic dynamics Analyse trophic dynamics Incorporate foodweb attributes into monitoring Nutritional landscapes BRISBANE, AUSTRALIA | SEPTEMBER 2017 MANAGED BY

15 EWKR Foodweb Video: https://youtu.be/_OR5OTV0g9Y
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