Natural infrastructure in dryland streams (NIDS) can establish regenerative wetland sinks that reverse desertification and strengthen climate resilience

The Science of The Total Environment, Journal Year: 2022, Volume and Issue: 849, P. 157738 - 157738

Published: Aug. 4, 2022

In this article we describe the natural hydrogeomorphological and biogeochemical cycles of dryland fluvial ecosystems that make them unique, yet vulnerable to land use activities climate change. We introduce Natural Infrastructure in Dryland Streams (NIDS), which are structures naturally or anthropogenically created from earth, wood, debris, rock can restore implicit function these systems. This manuscript further discusses capability functional similarities between beaver dams anthropogenic NIDS, documented by decades scientific study. addition, present novel, evidence-based finding NIDS create wetlands water-scarce riparian zones, with soil organic carbon stock as much 200 1400 Mg C/ha top meter soil. identify key restorative action is slow drainage water landscape such more it infiltrate be used facilitate physical, chemical, biological processes environments. Specifically, assert rapid environments reversed through restoration infrastructure once existed. then explore how feedback loops provide examples have been loops, lessons learned installation streams southwestern United States, efforts might scaled up, what implications for mitigating change effects. Our synthesis portrays using support adaptation protection climate-related disturbances stressors drought, shortages, flooding, heatwaves, dust storms, wildfire, biodiversity losses, food insecurity.

Language: Английский

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Diurnal patterns of spatial stream temperature variations reveal the need for integrating thermal heterogeneity in riverscape habitat restoration

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 918, P. 170786 - 170786

Published: Feb. 6, 2024

Longer durations of warmer weather, altered precipitation, and modified streamflow patterns driven by climate change are expected to impair ecosystem resilience, exposing freshwater ecosystems their biota a severe threat worldwide. Understanding the spatio-temporal temperature variations processes governing thermal heterogeneity within riverscape essential inform water management adaptation strategies. We combined UAS-based imagery data aquatic habitats with meteorological, hydraulic, river morphology quality investigate how key factors influence stream on diurnal basis different regions large recently restored Danube floodplain. Diurnal ranges were larger than ranged between 14.2 28.0 °C (mean = 20.7 °C), peak median temperatures (26.1 °C) around 16:00 h. The observed differences in timing amplitude among unexpectedly high created mosaic pattern heterogeneity. For example, cooler groundwater-influenced provided several cold patches (CWP, below 19.0 potential refuges (CWRs) 12:00 h, at time when other 21.0 °C, exceeding ecological threshold (20.0 for species. Within morphological complexity floodplain, we identified groundwater influence, shading as driving Promoting will become increasingly relevant under scenarios, restoration should consider both measures physically prevent habitat from excessive warming improve connectivity that meet requirements target species conservation. This requires restoring mosaics complex dynamic riverscapes.

Language: Английский

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Impacts of beaver dams on riverscape burn severity during megafires in the Rocky Mountain region, western United States

Geological Society of America eBooks, Journal Year: 2024, Volume and Issue: unknown, P. 131 - 151

Published: Jan. 15, 2024

ABSTRACT Megafires, defined as fires with burn areas greater than 100,000 acres (404.7 km2), result partly from increasingly short wet seasons coupled consistently hotter, drier summers, and past forest management decisions. Historically rare, megafires have become common in recent years. In this study, we examined the impact of on riverscapes beaver dams to explore resilience these habitats. We investigated whether beaver-modified are more resistant impacts geomorphically similar lacking dams. Our analysis utilized remotely sensed field-collected data three Rocky Mountain region that burned 2020. results showed riparian (1537 dams, which occurred 658 out 13,933 valley bottom segments evaluated) had significantly reduced severity compared without or outside river corridor. Additionally, when were classified according their modeled dam capacities (a metric closely linked habitat quality), lower intensities those even within same theoretical capacity class. indicate a high degree manipulation by beavers significant resistance burning during megafires. This may also provide valuable secondary benefits postfire ecosystem health, water quality, biodiversity.

Language: Английский

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From pixels to riverscapes: How remote sensing and geospatial tools can prioritize riverscape restoration at multiple scales

Wiley Interdisciplinary Reviews Water, Journal Year: 2024, Volume and Issue: 11(3)

Published: Feb. 1, 2024

Abstract Prioritizing restoration opportunities effectively across entire riverscape networks (i.e., riverine landscape including floodplain and stream channel networks) can be difficult when relying on in‐channel, reach‐scale monitoring data, or watershed‐level summaries that fail to capture heterogeneity the information necessary implement actions. Leveraging remote sensing geospatial tools develop spatially continuous nested hierarchical scales may support increased understanding of local reaches in their broader network context. Using riparian (vegetation) geomorphic (elevation) indicators assess status health, along with a measure capacity (valley bottom area), could adapted fit specific management goals related restoration. Frameworks using remotely sensed vegetation elevation data prioritize continuously riverscapes at restoration‐relevant, reach‐scales uphold ecosystem services provided by riverscapes. By incorporating knowledge identifying caveats for these datasets, inferences applied (watershed regional extent resolution) over wide variety ecoregions. This article is categorized under: Water Life > Conservation, Management, Awareness Methods Stresses Pressures Ecosystems

Language: Английский

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Flood ecology

BioScience, Journal Year: 2024, Volume and Issue: unknown

Published: May 23, 2024

Abstract Societal perceptions of river floods are typically negative because the death and destruction they may cause, although scientists natural resource managers have long recognized critical ecological role floods. Like fire some other disturbances, flooding intersects many aspects ecology society. But unlike fire, receives relatively little attention in disturbance literature. We call for more focused recognition flood as a discipline to help science better inform societal through developing understanding roles flooding. contend that absence has constrained progress our how rivers function formal conceptualization could reveal positive Finally, we propose series questions believe should address.

Language: Английский

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Resilience in River Corridors: How Much Do We Need?

Perspectives of Earth and Space Scientists, Journal Year: 2024, Volume and Issue: 5(1)

Published: Aug. 6, 2024

Abstract Resilience in river corridors refers to the ability absorb disturbance and maintain processes, forms, functions that support ecosystem provide services. derives from characteristics such as three‐dimensional connectivity, spatial heterogeneity, physical ecological integrity. is important climate warming growing human populations consumptive demands change regime affecting corridors. Consequently, management increasingly focuses on enhancing natural create resilience via (a) identifying processes features promote sustain resilience, (b) portions of a network and/or corridor are most resilient or influential creating at larger scales, (c) protecting restoring resilience. Although basic conceptual framework for these activities well established, critical questions remain with respect how reach‐scale creates catchment‐scale results.

Language: Английский

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Special Issue: Scientific Advances in River Restoration

River Research and Applications, Journal Year: 2025, Volume and Issue: 41(1), P. 3 - 9

Published: Jan. 1, 2025

ABSTRACT In September 2023, the River Restoration Centre (RRC) hosted inaugural Scientific Advances in (SARR) conference collaboration with University of Liverpool, UK. As we confront twin crises climate change and biodiversity loss, this event underscored importance global among river restoration scientists to help inform evidence‐led solutions. Fluvial systems are particularly vulnerable climatic pressures, droughts floods exacerbating impacts human‐induced modifications. is a crucial tool addressing these pervasive challenges, capable benefiting both people (e.g., flood mitigation, community engagement) nature ecological recovery, ecosystem functionality). The SARR aimed unite from various disciplines countries, foster collaborations, highlight new advancements enhance progress science. This special issue features diverse selection papers presented at conference, showcasing multidisciplinary contemporary restoration.

Language: Английский

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Conceptualizing River Floodplains

Earth s Future, Journal Year: 2025, Volume and Issue: 13(3)

Published: March 1, 2025

Abstract Geologic, geomorphic, hydrologic, ecological, and biogeochemical conceptual models of river floodplains developed since the mid‐20th century led to current conceptualization as integrative systems that store transform diverse materials, provide a source material can be transported downstream, function ecosystems. Scientific recognition critical component corridors is not, however, matched by societal perceptions legal or regulatory frameworks, which typically treat active channel floodplain separate entities. The development an scientific understanding reviewed here, along with five primary challenges progress in managing floodplains. These involve: integrating thinking, data collection, modeling, prediction across disciplines manner facilitates work practitioners regulators; scaling time space; measuring predicting feedbacks nonlinear interactions; resilience resistance natural human‐induced disturbances; effectively communicating social technical uncertainties management.

Language: Английский

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Toward effective river restoration in Brazil: a systematic review of current practices, regional disparities, and success metrics

Restoration Ecology, Journal Year: 2025, Volume and Issue: unknown

Published: March 20, 2025

Freshwater ecosystems in Brazil face critical threats from urbanization, industrialization, and agricultural expansion, leading to biodiversity loss diminished ecosystem services. Restoration efforts are essential, yet a systematic overview of their distribution, objectives, success metrics is lacking. Here, we conduct review scientific literature government‐funded project reports assess the current state river stream restoration Brazil. We applied structured approach analyze 25 publications 16 projects funded by National Watershed Revitalization Program, classifying scale, actions, evaluation. Results show that basin‐scale dominated over reach sub‐basin‐scale projects, with most concentrated Atlantic Forest Cerrado savanna Southeastern region. Water quality improvement, particularly through pollution control riparian vegetation restoration, was primary objective. Success evaluation focused largely on water habitat assessments; however, 40% 12.5% lacked formal control. Regional disparities distribution reflect economic institutional imbalances, underscoring need for standardized protocols more equitable resource allocation. This highlights importance adaptive management community involvement enhance outcomes ensure long‐term sustainability Brazil's freshwater ecosystems.

Language: Английский

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Advancing flood risk assessment: Multitemporal SAR-based flood inventory generation using transfer learning and hybrid fuzzy-AHP-machine learning for flood susceptibility mapping in the Mahananda River Basin

Journal of Environmental Management, Journal Year: 2025, Volume and Issue: 380, P. 124972 - 124972

Published: March 23, 2025

The Mahananda River basin, located in Eastern India, faces escalating flood risks due to its complex hydrology and geomorphology, threatening socioeconomic environmental stability. This study presents a novel approach susceptibility (FS) mapping updates the region's inventory. Multitemporal Sentinel-1 (S1) SAR images (2020-2022) were processed using U-Net transfer learning model generate water body frequency map, which was integrated with Global Flood Dataset (2000-2018) refined through grid-based classification create an updated Eleven geospatial layers, including elevation, slope, soil moisture, precipitation, type, NDVI, Land Use Cover (LULC), wind speed, drainage density, runoff, used as conditioning factors (FCFs) develop hybrid FS approach. integrates Fuzzy Analytic Hierarchy Process (FuzzyAHP) six machine (ML) algorithms models FuzzyAHP-RF, FuzzyAHP-XGB, FuzzyAHP-GBM, FuzzyAHP-avNNet, FuzzyAHP-AdaBoost, FuzzyAHP-PLS. Future trends (1990-2030) projected CMIP6 data under SSP2-4.5 SSP5-8.5 scenarios MIROC6 EC-Earth3 ensembles. SHAP algorithm identified LULC, type most influential FCFs, contributing over 60 % susceptibility. Results show that 31.10 of basin is highly susceptible flooding, western regions at greatest risk low elevation high density. projections indicate 30.69 area will remain vulnerable, slight increase SSP5-8.5. Among models, FuzzyAHP-XGB achieved highest accuracy (AUC = 0.970), outperforming FuzzyAHP-GBM 0.968) FuzzyAHP-RF 0.965). experimental results showed proposed can provide spatially well-distributed inventory derived from freely available remote sensing (RS) datasets robust framework for long-term assessment ML techniques. These findings offer critical insights improving management mitigation strategies basin.

Language: Английский

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