2022 Early Hearing Detection & Intervention Virtual Conference
March 13 - 15, 2022
6/05/2017 | 12:15 PM - 12:30 PM | COUPLING BIOPHYSICAL COMPLEXITY AND FOREST METABOLISM IN FLOODPLAIN LANDSCAPES | 302B
COUPLING BIOPHYSICAL COMPLEXITY AND FOREST METABOLISM IN FLOODPLAIN LANDSCAPES
Floodplains are biophysically complex systems that are considered among the most productive and biodiverse ecosystems on Earth. Until recently, quantitative assessment of these relationships have been constrained by technological limitation. To address how floodplain biophysical complexity and ecosystem function are related, we employed remote sensing, GIS, and spatial analyses to quantify and couple complexity and terrestrial production. The study site is a 7-km by 2-km portion of the Bitterroot River floodplain upon which 551 sample plots were delimited via segmentation classification. Biophysical complexity characterized by topographic heterogeneity and connectivity were represented in each plot by mean standard deviation ground height (0.13m - 0.92m), mean standard deviation canopy height (0.01m -2.96m) and percent inundation (0.0% -97.5%) metrics computed from Light Detection and Ranging (LiDAR) data and HEC-RAS inundation modeling. Potential primary production was addressed as Normalized Difference Vegetation Index (NDVI) values generated from aerial imagery. NDVI values ranged from -0.25 to 0.39, and were robustly related to the explanatory variables that together explained 59% of variation in NDVI, indicating that areas of the floodplain with greater biophysical complexity exhibited greater productivity.
- C28 Land-Water Interfaces
- C06 Large River Ecology
- C14 Hydroecology & C33 Remote Sensing
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Presenters/Authors
Peter Davis
(), University of Montana- Division of Biological Sciences, Systems Ecology Graduate Program, petedavis327@gmail.com;
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H. Maurice Valett
(), University of Montana, Division of Biological Sciences, maury.valett@umontana.edu;
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Marc Peipoch
(), Stroud Water Research Center, mpeipoch@stroudcenter.org;
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