Viewing river corridors through the lens of critical zone science

Frontiers in Water, Journal Year: 2023, Volume and Issue: 5

Published: May 31, 2023

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

Language: Английский

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Catchment concentration–discharge relationships across temporal scales: A review

Wiley Interdisciplinary Reviews Water, Journal Year: 2023, Volume and Issue: 11(2)

Published: Dec. 7, 2023

Abstract Processes that drive variability in catchment solute sourcing, transformation, and transport can be investigated using concentration–discharge (C–Q) relationships. These relationships reflect in‐stream processes operating across nested temporal scales, incorporating both short long‐term patterns. Scientists therefore leverage catchment‐scale C–Q datasets to identify distinguish among the underlying meteorological, biological, geological export patterns from catchments influence shape of their respective We have synthesized current knowledge regarding geological, meteorological on for various types diel decadal time scales. cross‐scale linkages tools researchers use explore these interactions Finally, we gaps our understanding dynamics as reflections processes. also lay foundation developing an integrated approach investigate relationships, reflecting biogeochemical effects environmental change water quality. This article is categorized under: Science Water > Hydrological Quality Environmental Change

Language: Английский

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Establishing fluvial silicon regimes and their stability across the Northern Hemisphere

Limnology and Oceanography Letters, Journal Year: 2024, Volume and Issue: 9(3), P. 237 - 246

Published: Jan. 13, 2024

Abstract Fluvial silicon (Si) plays a critical role in controlling primary production, water quality, and carbon sequestration through supporting freshwater marine diatom communities. Geological, biogeochemical, hydrological processes, as well climate land use, dictate the amount of Si exported by streams. Understanding regimes—the seasonal patterns concentrations—can help identify processes driving export. We analyzed concentrations from over 200 stream sites across Northern Hemisphere to establish distinct regimes evaluated how often moved among their period record. observed five diverse sites, with nearly 60% exhibiting multiple regime types time. Our results indicate greater spatial interannual variability seasonality than previously recognized highlight need characterize watershed variables that affect cycling ecosystems.

Language: Английский

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Biogeochemical and community ecology responses to the wetting of non-perennial streams

Nature Water, Journal Year: 2024, Volume and Issue: 2(9), P. 815 - 826

Published: Sept. 19, 2024

Language: Английский

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Expanding towards contraction: the alternation of floods and droughts as a fundamental component in river ecology

Biogeochemistry, Journal Year: 2025, Volume and Issue: 168(1)

Published: Jan. 3, 2025

Abstract Climate warming is causing more extreme weather conditions, with both larger and intense precipitation events as well extended periods of drought in many regions the world. The consequence an alteration hydrological regime streams rivers, increase probability conditions. Mediterranean-climate usually experience on a seasonal basis thus, freshwater Mediterranean ecosystems can be used natural laboratories for better understanding how climate will impact ecosystem structure functioning elsewhere. In this paper, we revisited contextualized historical new datasets collected at Fuirosos, well-studied intermittent stream naturally experiencing events, to illustrate alternation floods droughts influence hydrology, microbial assemblages, water chemistry, potential biogeochemical processing. Moreover, revised some most influential conceptual quantitative frameworks river ecology assess what extent they incorporate occurrence events. Based exercise, identified knowledge gaps challenges guide future research under intensification cycle. Ultimately, aimed share lessons learned from which help understand warming-induced impacts transport cycling matter fluvial ecosystems.

Language: Английский

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Best practice in high-frequency water quality monitoring for improved management and assessment; a novel decision workflow

Environmental Monitoring and Assessment, Journal Year: 2025, Volume and Issue: 197(4)

Published: March 4, 2025

The use of high-frequency water quality monitoring has increased over several decades. This mostly been motivated by curiosity-driven research and significantly improved our understanding hydrochemical processes. Despite these scientific successes the growth in sensor technology, large-scale uptake managers is hampered a lack comprehensive practical guidelines. Low-frequency data are still routinely used to review environmental policies but prone missing important event-driven With changing climate where such processes more likely occur have greater impact, adoption becoming pressing. To prepare regulators hydrological agencies for new challenges, this paper reviews international best practice provision. As result, we summarise added value monitoring, describe practices sensors analysers field, evaluate experience with cleaning. We propose decision workflow that includes considerations needs, choice, maintenance calibration, structured processing. fills an knowledge-exchange gap between statutory surveillance future practitioners agencies.

Language: Английский

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Using Spatially Rich Data Sets to Assess the Influence of Channel Characteristics on Biogeochemical Behavior in Agricultural Watersheds

Water Resources Research, Journal Year: 2025, Volume and Issue: 61(2)

Published: Feb. 1, 2025

Abstract Many agricultural landscapes have undergone significant modifications to drain farmland and improve crop productivity. Subsurface field drainage, ditching channelization of streams limit opportunities for biogeochemical processing carbon nutrients within the channel network. In this study, we used spatially rich water quality data collected from two contrasting regions an watershed in south‐central Minnesota, USA assess how features, such as channelization, tile presence lakes or wetlands, influence nitrate (NO 3 − ) dissolved organic (DOC). channelized upstream region, land use is predominantly (>92%) with subsurface drainage commonly discharging directly stream channel. Further downstream, more natural increasing including riparian wetlands. We concept reach leverage interpret behavior (i.e., source vs. sink) each region watershed. Results indicate variability between distinct regions, suggesting that characteristics lentic waters play a role regulating processing. The upstream, acts primarily conservative transporter small both NO DOC across sampling dates. contrast, lentic‐influenced exhibited shifts sink over time, especially , influenced by factors hydrologic connectivity discharge. These findings highlight value collecting resolved enhance our understanding which may be useful inform effective management conservation strategies.

Language: Английский

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Riverine Particulate Carbon, Nitrogen, and Phosphorus Are Decoupled From Land Cover at the Continental Scale

Global Biogeochemical Cycles, Journal Year: 2025, Volume and Issue: 39(3)

Published: March 1, 2025

Abstract While inland freshwater networks cover less than 4% of the Earth's terrestrial surface, these ecosystems play a disproportionately large role in global cycles [C]arbon, [N]itrogen, and [P]hosphorus, making streams rivers critical regulators nutrient balance at regional continental scales. Foundational studies have established relative importance hydrologic regime, land cover, instream removal processes for controlling transport processing C, N, P river networks. However, particulate can make up proportion total material during high flows. To constrain patterns biogeochemistry riverine particulates, we characterized modeled dissolved concentration variability scale using open‐access data from 27 National Ecological Observatory Network (NEON) sites across United States. We analyzed Boosted Regression Trees (BRTs) to statistically identify if characteristics could predict quantity quality stream particulates. The BRT models revealed that does not strongly dynamics NEON but indicate might be more important catchment alone. In addition, our study demonstrates consistent particulates forms, highlighting their likely significance biogeochemical along continuum.

Language: Английский

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Quantifying changes and trends of NO3 concentrations and concentration-discharge relationships in a complex, heavily managed, drought-sensitive river system

Journal of Hydrology, Journal Year: 2023, Volume and Issue: 622, P. 129750 - 129750

Published: May 31, 2023

Language: Английский

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Direct and Indirect Drivers of Energy and Nutrient Availability in Freshwater Ecosystems Across Spatial Scales

Global Biogeochemical Cycles, Journal Year: 2023, Volume and Issue: 37(5)

Published: May 1, 2023

Abstract Freshwater ecosystems reflect the landscapes in which they are embedded. The biogeochemistry of these systems is fundamentally linked to climate and watershed processes that control fluxes water mobilization energy nutrients imprinting as variation stream chemistry. Disentangling difficult operate at multiple scales varying across space. We examined relative importance climate, soil, characteristics mediating direct indirect pathways influence carbon nitrogen availability streams rivers spatial scales. Our data set comprised landscape climatic variables 37,995 chemistry measurements 459 spanning continental United States. Models explained a small fraction concentrations scale (25% 6%, respectively) but 61% 40%, respectively, smaller Hydrometeorological were always important solutes mechanistic implications variable hydrometeorology on was often not direct, rather it mediated by soil for nitrogen. For example, seasonality precipitation determining through its moisture biogeoclimatic scales, whereas had scale. results suggest hydrometeorological forcing remains consistent driver nutrient mechanism influencing patterns varies broad

Language: Английский

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