Modelling the impact of the Nordic Bioeconomy Pathways and climate change on water quantity and quality in a Danish River Basin

CATENA, Год журнала: 2022, Номер 222, С. 106795 - 106795

Опубликована: Ноя. 28, 2022

Язык: Английский

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Nitrogen and phosphorus losses in Nordic and Baltic agricultural monitoring catchments – Spatial and temporal variations in relation to natural conditions and mitigation programmes

CATENA, Год журнала: 2023, Номер 230, С. 107205 - 107205

Опубликована: Июнь 10, 2023

Nitrogen (N) and phosphorus (P) losses via agricultural drainage water have negative impacts on receiving bodies large-scale programmes to reduce nutrient been established in the Nordic Baltic countries, together with catchment monitoring programmes. This study evaluated time series (9–40 years) of data from 34 selected Nordic-Baltic catchments for spatial temporal variations area-specific discharge (mm) concentrations transport total nitrogen (TN) (TP). Water varied 125 mm (Denmark) > 1000 (Norway). Catchments low TN (≤3 mg L-1) were dominated by clay or grass leys undrained reduction nitrate (NO3) shallow groundwater. high (≥10 had loams cereal crops. TP highest (≥0.45 erosive soils, relatively crops, lowest (≤0.07 permeable soils. Generalised additive mixed model (GAMM) analysis flow-weighted patterns revealed decreases seven increases eight, while four periods opposing trends. decreased Denmark Sweden 1990–2010, following introduction mitigation eight increased six, one showed Decreases coincided improved P balance sand loam. To further N losses, a tailored set measures is needed each combination soil, climate, geohydrology production. Intensive small can reveal how relate natural conditions changes

Язык: Английский

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Co‐occurrence of browning and oligotrophication in a boreal stream network

Limnology and Oceanography, Год журнала: 2022, Номер 67(10), С. 2325 - 2339

Опубликована: Авг. 24, 2022

Abstract The relative supply of carbon (C), nitrogen (N), and phosphorus (P) to freshwater ecosystems is fundamental importance aquatic productivity, nutrient cycling, food web dynamics. In northern landscapes, ongoing climate change, as well legacies from atmospheric deposition, have the potential drive changes in how these elements are recycled on land exported streams. While it established that dissolved organic (DOC) concentrations increased many high latitude streams, simultaneous trends for N P ratios among resources, not documented. We used data 13 sites a boreal stream network analyze decadal‐scale inorganic (DIN), (DON), (DIP) partition seasonally. observed widespread declines DIP DIN regardless catchment characteristics. decline was strongest during growing season, together with increases DOC/DON at several sites, suggests increasing retention by plants soil microbes across this landscape. By contrast, occurred primarily late autumn winter, indicating key biogeochemical also occurring non‐growing season. Linking DOC concentration streams revealed ratio energy majority becoming richer poorer limiting nutrients over time. Overall, our observations point oligotrophication, possible consequences landscapes.

Язык: Английский

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Exploring the Role of Weather and Forest Management on Nutrient Export in Boreal Forested Catchments Using Spatially Distributed Model

Forests, Год журнала: 2023, Номер 14(1), С. 89 - 89

Опубликована: Янв. 3, 2023

Weather-driven hydrological variability and forest management influence the nutrient export from terrestrial to aquatic systems. We quantified effect range of variation in total nitrogen phosphorus Vehka-Kuonanjärvi catchment located southeastern Finland. A distributed model NutSpaFHy was used with varying weather scenarios (compiled observed extreme years dry, wet & mild) (including no additional intensive clear-cutting all mature stands existing structure). Nutrient exports by scenario combinations were compared modeled baseline weather. The results showed that increase mild (over 55%) exceeded caused (23 %). Dry decreased tenth baseline, which per hectare 2.22 kg for N, 0.08 P). suggest future maintaining a good ecological status systems can be challenging if winters occur more frequently. Certain characteristics, e.g., deciduous tree percentage, open area percentage site fertility, induced Hotspot analysis enabled identifying areas currently high This helps targeting water protection efficiently.

Язык: Английский

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Hurricanes Substantially Reduce the Nutrients in Tropical Forested Watersheds in Puerto Rico

Forests, Год журнала: 2022, Номер 13(1), С. 71 - 71

Опубликована: Янв. 4, 2022

Because nutrients including nitrogen and phosphorus are generally limited in tropical forest ecosystems Puerto Rico, a quantitative understanding of the nutrient budget at watershed scale is required to assess vegetation growth predict carbon dynamics. Hurricanes most frequent disturbance Rico play an important role regulating lateral exports from forested watershed. In this study, we selected seven watersheds examine immediate lagged effects hurricanes on phosphorous exports. Our results suggest that surges heavy precipitation associated with accelerate as much 297 ± 113 306 70 times than long-term average, respectively. addition, estimated it requires approximately one year for post-hurricane riverine concentrations recover pre-hurricane levels. During recovery period, 30 6% 28 5% higher average.

Язык: Английский

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Nordic hydrological frontier in the 21st century

Hydrology Research, Год журнала: 2022, Номер 53(5), С. 700 - 715

Опубликована: Апрель 15, 2022

Abstract The 21st century has brought new challenges and opportunities also increased demands on the Nordic hydrological community. Our science focus approaches need rethinking adaptation to changing requirements of society in response climate change human interventions, search more comprehensive cross-disciplinary solutions. This commentary highlights possibilities suggests vital steps forward for scientific discipline within research. By providing a common direction, we hope increase awareness, accelerate progress community, emphasize importance knowledge serving other fields at large. We that our vision identify will raise awareness assist long-term development frontier century.

Язык: Английский

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Influence of wetlands on nutrients in headwaters of agricultural catchments

Hydrological Processes, Год журнала: 2023, Номер 37(4)

Опубликована: Март 29, 2023

Abstract We investigated the influence of land cover on nutrient concentrations (295 samples) in headwater streams over a 2‐year period 10 agriculture‐dominated subcatchments (163–8373 ha) southern Ontario Canada. In this region, monitoring and research dynamics wetlands is sparse. Our results indicated significant positive correlation (Pearson coefficient ρ = 0.320) between soluble reactive phosphorus (SRP) percentage these catchments. This result suggests that wetlands, other wet riparian zones, are key sources SRP streams. Nitrate were positively correlated with % agricultural ( 0.316), consistent previous studies, while negatively −0.325). There was discharge some Seasonal trends appear to be closely related temperature‐dependent seasonal changes redox conditions, including levels dissolved O 2 . Surficial geology had nitrate streams, which tended higher catchments dominated by glacial till (till terrain), compared extensive areas outwash sand, addition terrain.

Язык: Английский

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Concentration‐Discharge Patterns Reveal Catchment Controls Over the Stoichiometry of Carbon and Nutrient Supply to Boreal Streams

Journal of Geophysical Research Biogeosciences, Год журнала: 2023, Номер 128(8)

Опубликована: Авг. 1, 2023

Abstract Carbon (C), nitrogen (N), and phosphorus (P) export from catchments is strongly regulated by interactions between hydrological flowpaths their terrestrial use/storage. While concentration‐discharge ( c ‐ Q ) relationships have been widely used to understand this interplay for C, N, P individually, how flow regulates the relative supply of these resources across spatial temporal scales not well documented. Here, we analyze 12 years data test seasonal concentrations inorganic N (Dissolved [DIN]) [DIP]), dissolved organic (DON) C (dissolved carbon [DOC]) respective ratios streams in a boreal landscape. We observed opposing solutes. DOC DON tended toward transport limitation with little year‐to‐year change, whereas ammonium (NH 4 DIP were increasingly source limited over time. These different translated into large (up three‐fold) shifts resource (e.g., DOC:DIN) response changes flow. Our results also highlight strong influences catchment structure on patterns, regardless solute, season, longer‐term directional changes. solute responses became less time; while increasing mire/decreasing forest cover. Overall, differences timing exports P, create dynamic variation subsequent impacts stoichiometry that central aquatic ecological processes.

Язык: Английский

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Women advancing research on hydrological processes: Preface

Hydrological Processes, Год журнала: 2021, Номер 35(7)

Опубликована: Июнь 16, 2021

This Special Issue (SI) of Hydrological Processes features invited contributions led by women scientists at an advanced career stage who have made sustained to the study hydrological processes, advancing field. The papers, with from 16 8 countries, reflect a wide diversity research topics and methods. were invitation. Work these featured colleagues become benchmarks through which other studies been measured implemented, because their original ideas, concepts theories thorough field-based observations modelling experiments. While this SI can only feature few contributions, we recognize want emphasize that continue produce outstanding scientific We aimed highlight female role models as lead authors representing breadth hydrologic sciences they lead. celebrates whole community in STEM (science, technology, engineering, mathematics), not just presented within SI. Further working toward goal, leadership journals Processes, Water Resources Research, Earth Surface Landforms co-organized online seminar series on 'Women Advancing River Research', (https://www.cee.psu.edu/events/women-advancing-river-research.aspx). are convinced celebration recognizing will help reduce barriers professional challenges, perhaps inspire others pursue careers sciences. had initially planned publish much earlier, but onset global COVID19 pandemic 2020, continues date, caused delays. Several recent publications discuss issues researchers face due COVID-19 how resulting changed circumstances differentially affect individuals based gender. Early impacts suggest women's publishing rate has fallen relative men's amid (Frederickson, 2020; Viglione, Vincent-Lamarre et al., 2020). contributors certainly experienced that—and work even harder get papers submitted amidst additional challenges related family, caregiving, teaching, homeschooling, name few. Some disrupted entirely. U.S. National Academies documented individual schedules environments, blurring lines between personal life; it institutional laboratories facilities, well conferences, 'Impact Careers Women Academic Sciences, Engineering, Medicine' (NASEM, 2021). In coming months years, be critical universities institutes account for gender dynamics when considering recruitment, retention, promotion (Malisch NASEM, obstacles imposed latest example disproportionately science beyond. fact underrepresented is well-documented many countries. exemplified reports about representation, diversity, inclusion such Hill 2010 ('Why so few? science, mathematics'), Bernard & Cooperdock, 2018 geosciences ('No progress 40 years') NASEM (2020; 'Promising practices addressing underrepresentation medicine: opening doors'). Research also reveals long faced more advancement than men, further inequity colour. myriad reasons articulated as: 'Sexual harassment women: climate, culture, consequences academic sciences, medicine 2018)'; 'Do babies matter: family ivory tower' (Mason 2013); 'Faculty service loads gender: taking care family?' (Guarino Borden, 2017); 'Gender differences recommendation letters postdoctoral fellowships geoscience' (Dutt 2016); 'Journals invite too referee' (Lerback Hanson, 2017). celebrate accomplishments included SI, voices missing, insights undiscovered, our community. processes strongest most quickly all genders together collectively collaboratively. achieved international recognition contributions. Many earlier implemented. Further, served dedicated mentors students, early scientists, colleagues. Mentors provide support, guidance, opportunities enable develop flourish continue. presents some excellent examples fruitful collaborations. briefly introduce below. subject matters address enhance understanding interdisciplinary extremely timely focuses ecohydrological climate change, human behaviour: Dr. Christine Alewell Professor University Basel, Switzerland. She expert biogeochemistry, soil chemistry degradation natural semi-natural ecosystems. One focus her development indicators wetland regeneration. paper, al. (2021), assessed main phosphorus binding states operating constructed wetlands assess saturation indications recycling potential filter materials. They showed accumulation increased age investigated vertical flow three materials (fluviatile sands, zeolite-and clinopyroxene-dominated lava sands) was accumulated upper horizons. Ann-Kristin Bergstrom Umeå University, Sweden. Her concerns effects environmental change productivity food web structure northern aquatic current affecting lake water what possible biogeochemical changes ecosystem services pristine lakes. Invited Commentary (Bergström, 2020) she discusses delivery rhythm (timing, frequency, magnitude spring flood episodes) lakes facing intensification influences terrestrial DOM nutrients, retention times. illustrates magnitudes input its seasonal whether act 'shunts' or 'chemostats'. Still, little exists specific impact time pelagic webs DOM. Louise Bracken Durham, UK. focused dynamic complex relationships generate supply fine sediment rivers, those move river system. (2020) innovation intimately linked. Innovation central delivering behaviour sustainable goals (SDGs) important furthering processes. Using NE England, demonstrated design crucial success. It could used model integrate widely deliver organizations SDGs. Susan L. Brantley Distinguished Geosciences Director Environmental Systems Institute, Pennsylvania State USA. chemical, biological, physical associated circulation aqueous fluids shallow hydrogeologic settings. leading figure Critical Zone. Lebedeva (2021) summarized importance reaction fronts land-air interface table. explored like 'valves' where reaction-induced porosity re-orient directions. reactive transport run geologically simulation times determine weathering-induced architecture headwaters predict distribution fronts, prior models. Their conceptualization inform better subsurface permeability, replacing general treatment black box groundwater Georgia (Gia) Destouni Stockholm pioneer field solute integrated, heterogeneous soil-groundwater system large scales encompassing entire pathways cycle including develops methodology distinguishing quantifying key stream concentration load versus discharge tracer pollutant currently active sources surface legacy inputs, waste deposits land contamination. applied multi-catchment analysis chloride metal data over 1990–2018 around major Lake Mälaren results show widespread prevalence overall greater both metals, playing former latter. Such source distinction quantification essential effective mitigation waterborne pollution. Heleen De Wit Senior Scientist Norwegian Institute NIVA Associate Oslo, Norway. catchment carbon cycling quality. collaboration integrating long-term concentrations fluxes total nitrogen 69 Nordic headwater catchments, spanning range climatic conditions, sites impacted agricultural forest management. Concentrations highest intermediate forestry-impacted lowest positively percent cover summer temperature. If shift low-carbon resource-efficient society production use fertilizer, new protection quality arise. need funding monitoring managed unmanaged, catchments emphasized. Dr Tanya Doody Principal high spatial eco-hydrological projects Land business unit Australia's national agency, CSIRO. significant experience requirements vegetation times, resources. involves ecophysiological underpin remote sensing tools scale regionally improve regimes health water-dependent riparian informs integrated planning management Australia internationally. With collaborative contribution (Doody 2021) manuscript investigates application via drip irrigation term drought stressed disconnected semi-arid woodlands (Eucalyptus largiflorens). Currently, known volumes would ecological benefits trees stress. advances floodplain demonstrating innovation, providing areas relatively small realize benefits, build future resilience protect conservation value riverine woodlands. Heathwaite Lancaster Environment Centre, recognized internationally authority diffuse pollution particular loss water, implications freshwater credited 'Critical Source Areas' concept. paper synthesizes hydrology biogeochemistry process-based lowland groundwater-fed river, representative systems continuously recharged throughout year. illustrate incorporating hydrogeological process beneath riverbed, wider landscape setting, predictive if capture appropriately hyporheic zone nitrate processing metabolics under changing climate. A second Bieroza interplay flushing in-stream during storm events multiple parameters years. mined high-frequency dataset two hydrochemical indices, hysteresis index evaluate concentration-discharge third order stream. demonstrate indices fingerprint effect disturbance useful ecology. Hubbard Lab Sciences Area Berkeley Laboratory Adjunct UC Berkeley, function, emphasis geophysical approaches remotely sense hydrological, geochemical, biological geomechanical Commentary, emerging technologies modes developing generalizable hydrobiogeochemical behaviour; underpinning optimized resource propose should able seamlessly unify systems, infrastructure, computational allow near real-time, autonomous communication feedback. urge advance observation-data-modelling characterization prediction across watershed observatories, eventually real-time information managers. Julia Jones Program Head Geography College Earth, Ocean, Atmospheric Science, Oregon Corvallis, modifications disturbances hydrology, geomorphology, contribution, analyses respond multi-decadal timing streamflow. Through case (US-Canada) Columbia Basin, USA, Hammond combining publicly available historical streamflow paired-watershed metrics performance, detect, evaluate, effectively manage basins. Results indicate basins increasingly vulnerable management, maintain long-term, records gages, unregulated upstream reservoirs, rivers downstream reservoirs. Jessica Lundquist Washington, patterns snow weather mountains likely resources interactions atmospheric terrain, snow, integration collection scales. trace history interception people frequently select parameterizations pre-existing rather re-evaluating underlying Because dominant fundamentally different transferable. outlines update consistent represent albedo. Anne Nolin Reno, decades mountain snowpacks glaciers, social-ecological systems. leader pioneered ice mapping techniques augment situ modelling. traditional may adequately nature cover. snowpack require suite derived readily modelled serve proxies relevant snow-related climate-driven space time, being overly simplistic complicated interpretation. present targeted set spatially explicit, multi-temporal sectors, stakeholders, incl. satellite NASA's Moderate Resolution Imaging Spectroradiometer outputs. Christina (Naomi) Tague Ecohydrology Ecoinformatics California Santa Barbara, and, specifically, eco-hydrologic altered Much using generalize larger catchments. Frew novel, sophisticated ecohydrologic barrier credibility. argue plants interact, must visualize outputs, encoded outline framework increasing usefulness visualization. Doerthe Tetzlaff Humboldt-Universität Department Leibniz Freshwater Ecology Inland Fisheries, Berlin, Germany. aims temporal variability function hydrologically scales; flow, way influence hydrochemistry hydroecology streams. inter-comparison stable isotopes plant stem (xylem) soils. findings xylem angiosperms influenced isotopic composition retained weeks sampling, whereas gymnosperms generally did exhibit memory effect. several addressed soil–plant–atmosphere interactions. Cherie Westbrook Planning, Global Security Saskatchewan, Canada. co-evolution explain structure, (and especially beaver wetlands) informing policy regulatory discussions conservation, restoration. risks relying nature-based solution. Obviously, dams unlikely 100% protection. However, transiently store rainfall events, solution regional strategies. needed stored transmitted ponds variable dam structural integrity. Ellen Wohl Geology Geosciences, Colorado physical-ecological ecosystems, complexity organic storage, wood floodplains activities material corridors. Scamardo longitudinal channel-spanning logjam populations resilient disturbance, investigating intra-reach inter-reach densities decade substantial variations snowmelt peak flood. log-jams corridor form introducing engineered logjams beads moderate create persistent Data sharing applicable article no created analyzed study.

Язык: Английский

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Projecting the impacts of the bioeconomy on Nordic land use and freshwater quality and quantity – An overview

CATENA, Год журнала: 2023, Номер 228, С. 107054 - 107054

Опубликована: Апрель 26, 2023

This paper synthesizes a five-year project (BIOWATER) that assessed the effects of developing bioeconomy on Nordic freshwaters. We used catchment perspective and combined several approaches: comparative analyses long-term data sets from well-monitored catchments (agricultural, with forestry, near pristine) across Fennoscandia, biogeochemical modelling ecosystem services assessment for integration. Various mitigation measures were also studied. Benchmark Shared Socio-economic Pathways downscaled articulated in dialogue national stakeholder representatives leading to five Bioeconomy (NBPs) describing plausible but different trajectories societal development towards 2050.These then service assessment. Key findings work synthesized here are: (a) The monitoring results 69 demonstrate agricultural lands exported an order magnitude more nutrients than natural (medians 44 vs 4 kg P km−2 y-1 1450 139 N y-1) whilst forests intermediate (7 200 y-1). (b) Our contrasting scenarios led substantial differences land use patterns, which affected river flow as well nutrient loads two four modelled (Danish Odense Å Norwegian Skuterud), not others (Swedish C6 Finnish Simojoki). (c) Strongly (NBP1 maximizing resource circularity versus NBP5 short-term profit) found lead similar monetary estimates total benefits, though underlying reasons – pattern six studied catchments. (d) ecological status small medium sized rivers landscapes benefitted greatly increase riparian forest cover 10 % 60 %. Riparian buffer strips, constructed wetlands, rewetting ditched peatlands, nature-based solutions optimize processes thus can help mitigating negative impacts intensified biomass removal water quality.

Язык: Английский

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