EARLY HEARING DETECTION AND INTERVENTION VIRTUAL CONFERENCE
MARCH 2-5, 2021
(Virtually the same conference, without elevators, airplane tickets, or hotel room keys)
5/23/2019 | 2:45 PM - 3:00 PM | GROUNDWATER FLUXES AS A DRIVER OF SPATIAL PATTERNS OF ECOLOGICAL FUNCTION AND STRUCTURE IN A HEADWATER STREAM NETWORK | 251 DE
GROUNDWATER FLUXES AS A DRIVER OF SPATIAL PATTERNS OF ECOLOGICAL FUNCTION AND STRUCTURE IN A HEADWATER STREAM NETWORK
Fluxes of groundwater to stream ecosystems can influence physicochemical parameters, such as nutrients and temperature that are key drivers of ecological condition. However, the potential for groundwater to influence spatial patterns of ecological condition within a stream network is not well known. We present a multi-reach study assessing concordance of network scale patterns of groundwater influence and indicators of ecological function (decomposition and algal growth rate) and structure (algal biomass) during summer and winter baseflow conditions. The relative influence of groundwater was assessed using stream gaging radon concentration and stream temperature data from 19 reaches within the headwaters of a Thames River tributary in Ontario, Canada. Nutrient availability and its relationship with groundwater influence will also be evaluated. Algal communities were sampled by deploying artificial substrates in riffle, run and pool habitats of each sampling reach. Decomposition was assessed using the cotton strip assay. Spatial patterns of groundwater influence and ecological condition will be determined and correlations between proxies for groundwater influence and ecological conditions assessed for summer and winter samplings. Findings will improve understanding of the role of groundwater fluxes as a driver of spatial heterogeneity in-stream ecological conditions.
- Algae
- Decomposition
- Nutrients
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Presenters/Authors
Adam G. Yates
(), Western University & Canadian Rivers Institute, adam.yates@uwo.ca;
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Shayla Kroeze
(), Western University & Canadian Rivers Institute, skroeze@uwo.ca;
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Nicole Gotkowski
(), Western University & Canadian Rivers Institute, ngotkows@uwo.ca;
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Max Boreux
(), Western University, mboreux@uwo.ca;
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Jim Roy
(), Environment and Climate Change Canada, jim.roy@canada.ca;
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Clare Robinson
(), Western University, crobinson@uwo.ca;
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