Midwinter dry spells amplify post-fire snowpack decline

Hatchett, Benjamin J.; Koshkin, Arielle; Guirguis, Kristen; Rittger, Karl; Nolin, A. W.; Heggli, Anne; Rhoades, Alan M.; East, Amy E.; Siirila‐Woodburn, Erica R.; Brandt, W. Tyler; Gershunov, Alexander; Haleakala, Kayden

doi:10.1002/essoar.10512494.1

Cited by 1 publication

(1 citation statement)

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“…Another increasingly relevant form of disturbance is wildfire (Jolly et al, 2015). Wildfire creates substantial changes in upland and river corridor fluxes of water, solutes, sediment, and organic matter, and associated changes in river corridor form and function (e.g., Hatchett et al, 2022;Roebuck et al, 2022;Shuman et al, 2022). Changes in the spatial extent, frequency, and severity of wildfire may push river corridors across thresholds into alternative states.…”

Section: Disturbance Regimes and Stabilitymentioning

confidence: 99%

Viewing river corridors through the lens of critical zone science

et al. 2023

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River corridors integrate the active channels, geomorphic floodplain and riparian areas, and hyporheic zone while receiving inputs from the uplands and groundwater and exchanging mass and energy with the atmosphere. Here, we trace the development of the contemporary understanding of river corridors from the perspectives of geomorphology, hydrology, ecology, and biogeochemistry. We then summarize contemporary models of the river corridor along multiple axes including dimensions of space and time, disturbance regimes, connectivity, hydrochemical exchange flows, and legacy effects of humans. We explore how river corridor science can be advanced with a critical zone framework by moving beyond a primary focus on discharge-based controls toward multi-factor models that identify dominant processes and thresholds that make predictions that serve society. We then identify opportunities to investigate relationships between large-scale spatial gradients and local-scale processes, embrace that riverine processes are temporally variable and interacting, acknowledge that river corridor processes and services do not respect disciplinary boundaries and increasingly need integrated multidisciplinary investigations, and explicitly integrate humans and their management actions as part of the river corridor. We intend our review to stimulate cross-disciplinary research while recognizing that river corridors occupy a unique position on the Earth's surface.

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