2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
5/22/2018 | 2:15 PM - 2:30 PM | SELF-ORGANIZED MICROTOPOGRAPHY IN BLACK ASH WETLANDS IS DRIVEN BY HYDROLOGY | 430 B
SELF-ORGANIZED MICROTOPOGRAPHY IN BLACK ASH WETLANDS IS DRIVEN BY HYDROLOGY
Wetland microtopographic structure and its function has been the subject of research for decades, and several investigations suggest that microtopography is generated by autogenic ecohydrologic processes. But due to the difficulty of capturing the true spatial variability of wetland microtopography, many of the hypotheses for self-organization have remained elusive to test. We employ a novel method of Terrestrial Laser Scanning (TLS) that reveals an unprecedented high-resolution (<0.5 cm) glimpse at the true spatial structure of wetland microtopography in 10 black ash (Fraxinus nigra) stands of northern Minnesota, USA. Here we present the first efforts to synthesize this information and show that TLS can accurately locate microtopographic high points (hummocks), as well as estimate their height and area. Using these new data, we estimate distributions in both microtopographic elevation and hummock area in each wetland and relate these to monitored hydrologic regime; in doing so, we test hypotheses linking emergent microtopographic patterns to putative hydrologic controls.
- Wetland
- Structure
- New Methods
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Presenters/Authors
Jake Diamond
(), Virginia Tech, jacdia@vt.edu;
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Atticus Stovall
(), University of Virginia, aes2aj@virginia.edu;
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Daniel McLaughlin
(), Virginia Tech, mclaugd@vt.edu;
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Rob Slesak
(), University of Minnesota, raslesak@umn.edu;
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