Snowmelt periods as hot moments for soil N dynamics: a case study in Maine, USA

Patel, Kaizad; Tatariw, Corianne; MacRae, Jean D.; Ohno, Tsutomu; Nelson, Sarah J.; Fernandez, Ivan J.

doi:10.1007/s10661-020-08733-0

Cited by 6 publications

(3 citation statements)

References 41 publications

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“…Hillslopes produce relatively transient VIE features and may often be seen as extensions of other VIEs, such as hillslope seeps co-located with a wetland or the unchannelized swales that contribute to a non-perennial network. In cold regions, snow, ice and permafrost can create an impermeable layer resulting in near-surface soil being inundated for days to weeks during spring thaw (Coles et al 2017, Patel et al 2020. In dry regions, intense precipitation that exceeds the local infiltration capacity can result in water ponding on the surface of hillslopes or overland flow generation down hillslopes, which can be exacerbated by initial hydrophobicity of dry soil (Kirkby et al 2002).…”

Section: Hillslopes With Surface Runoffmentioning

confidence: 99%

Reviews and Syntheses: Variable Inundation Across Earth’s Terrestrial Ecosystems

Stegen,

Burgin,

Busch

et al. 2024

Preprint

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Abstract. The structure, function, and dynamics of Earth’s terrestrial ecosystems are profoundly influenced by the frequency and duration that they are inundated with water. A diverse array of natural and human engineered systems experience temporally variable inundation whereby they fluctuate between inundated and non-inundated states. Variable inundation spans from extreme flooding and droughts to predictable sub-daily cycles. Variably inundated ecosystems (VIEs) include hillslopes, non-perennial streams, wetlands, floodplains, temporary ponds, tidal systems, storm-impacted coastal zones, and human engineered systems. VIEs are diverse in terms of inundation regimes, water chemistry and flow velocity, soil and sediment properties, vegetation, and many other properties. The spatial and temporal scales of variable inundation are vast, ranging from sub-meter to whole landscapes and from sub-hourly to multi-decadal. The broad range of system types and scales makes it challenging to predict the hydrology, biogeochemistry, ecology, and physical evolution of VIEs. Despite all experiencing the loss and gain of an overlying water column, VIEs are rarely considered together in conceptual, theoretical, modeling, or measurement frameworks/approaches. Studying VIEs together has the potential to generate mechanistic understanding that is transferable across a much broader range of environmental conditions, relative to knowledge generated by studying any one VIE type. We postulate that enhanced transferability will be important for predicting VIE function under future, potentially non-analog, environmental conditions. Here we aim to catalyze cross-VIE science that studies drivers and impacts of variable inundation across Earth’s VIEs. To this end, we complement expert mini-reviews of eight major VIE systems with overviews of VIE-relevant methods and challenges associated with scale. We conclude with perspectives on how cross-VIE science can derive transferable understanding via a ‘continuum approach’ in which the impacts of variable inundation are studied across multi-dimensional environmental space.

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Section: Hillslopes With Surface Runoffmentioning

confidence: 99%

Reviews and Syntheses: Variable Inundation Across Earth’s Terrestrial Ecosystems

Stegen,

Burgin,

Busch

et al. 2024

Preprint

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“…Dochází k jarnímu tání a z půdy bez vegetačního krytu jsou dusičnany, velmi slabě navázané na sorpční komplex půdy, lehce vymývány do vodních toků(Scheffer a Schachtschabel 2002). Stejné jarní peaky koncentrací dusičnanů popisují iKvítek et al (2009),Kvítek and Doležal (2003),Dinnel a Bratkovich (1993) aPatel et al (2020). Jako kritické podmínky pro koncentrace dusičnanů se tedy jeví orná půda bez vegetačního krytu v kombinaci s vysokými průtoky způsobenými táním či deštěm.…”

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První konference PERUN

2023

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Impact of rainfall-runoff regime on water quality of chosen streams in the Sázava River catchment

Havlíková,

Pavlíková

2023

První Konference PERUN

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The aim of the contribution is to evaluate how hydroclimatic variables change due to the influence of advancing climate change and whether their change is reflected in the change in the water quality of surface streams. To evaluate the impact of climate change, four streams in the Sázava River basin were selected – Šlapanka, Sázavka, Jankovský potok and Chotýšanka. This is a watershed of a typically rural character, where the dominant source of pollution is agriculture. Data series of hydroclimatic parameters and water quality parameters provided by the ČHMÚ and Povodí Vltava s.p. were available. The selected parameters were: air temperature, total precipitation, height of snow cover in the basin and water temperature, conductivity, ammonia nitrogen, nitrite nitrogen, nitrate nitrogen, phosphate phosphorus and total phosphorus in streams. Data were analysed using regression analysis, correlation coefficients, and the Mann-Kendall trend test. Data analysis showed that hydroclimatic parameters changed in the observed period. The air temperature increased, its increase was proven by the Mann-Kendall trend test (Sázavka and Šlapanka River basin). Furthermore, the number of tropical days increased, the height and duration of the snow cover decreased. No trend was found in the rainfall totals data. There was a slight increase in stream water temperature, but this increase was not confirmed by the Mann-Kendall trend test. Nitrate concentrations were high in all selected streams and their concentrations stagnated or slightly decreased. Phosphate phosphorus concentrations also decreased. Dependency analyses showed that in selected river basins nitrates come from areal sources of pollution, while phosphates rather come from diffuse point sources of pollution. The planned management of activities in the river basin is therefore necessary to adapt to the character of pollution sources.

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Snowmelt periods as hot moments for soil N dynamics: a case study in Maine, USA

Cited by 6 publications

References 41 publications

Reviews and Syntheses: Variable Inundation Across Earth’s Terrestrial Ecosystems

Reviews and Syntheses: Variable Inundation Across Earth’s Terrestrial Ecosystems

První konference PERUN

Impact of rainfall-runoff regime on water quality of chosen streams in the Sázava River catchment

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