Intensified forestry as a climate mitigation measure alters surface water quality in low intensity managed forests

Valinia, Salar; Kaste, Øyvind; Wright, Richard F.

doi:10.1080/02827581.2020.1854339

Cited by 6 publications

(2 citation statements)

References 66 publications

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“…For assessment of future surface water acidification, the process-oriented model MAGIC (Cosby et al 1985;Norling et al this issue) is commonly used (Larssen 2005;Posch et al 2019). MAGIC has in its core descriptions of acid-base soil chemistry and elemental mass balances and has been further developed to include forest N cycling and C storage which potentially enable simulation of catchment disturbances and climate change effects on element cycling and surface water chemistry (Valinia et al 2021). A new version of MAGIC called MAGIC-Forest is implemented in the model development framework Mobius (Norling et al 2021) enabling flexible sensitivity analysis and addition of model features (Norling et al, this issue) , Simulation of effects of 'confounding factors' on expected recovery of surface water is necessary for credible predictions in the current era where factors other than deposition will influence surface water acidification status (de Wit et al 2023).…”

Section: Introductionmentioning

confidence: 99%

Transitioning from anthropogenic to natural acidification in a humic catchment in Norway: projections of deposition and climate change effects

Wit,

Clayer,

Kaste

et al. 2023

Preprint

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Five decades of monitoring data (1974-2022) at the acidified, acid-sensitive forested catchment of Langtjern in southern Norway document strong chemical recovery and browning of surface water, related to changes in sulfur (S) deposition. We used the process-oriented model MAGIC to simulate water chemistry from 1860 to 2100 using historical and projected deposition and climate. New in MAGIC is i) a solubility control of dissolved organic carbon (DOC) from S deposition, which allows inclusion of the changing role of organic acids in chemical recovery, and ii) climate-dependency of weathering rates. MAGIC successfully described measured chemical recovery and browning, and the change towards organic acid dominated acidification status. Hindcasts of pH suggested lower preindustrial pH than previously modelled with MAGIC, simulated without sulfate-dependency of DOC solubility. Climate scenarios indicated substantially wetter climate, leading to increased base cation losses and slight reacidification of the surface waters. A sensitivity analysis of weathering rates revealed that a doubling of weathering rates is needed to reach pre-industrial ANC in 2100, given that S deposition is expected to be reduced to a minimum. We conclude that impacts of climate change are most likely to lead to slight reacidification of surface waters, and that enhanced weathering rates could partly compensate this trend.

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Section: Introductionmentioning

confidence: 99%

Transitioning from anthropogenic to natural acidification in a humic catchment in Norway: projections of deposition and climate change effects

Wit,

Clayer,

Kaste

et al. 2023

Preprint

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show abstract

“…Again, the extent of this post-harvest leaching flux in relation to the harvest residues differs as a result of interactions with the amount of harvest residues, soil fertility, microbial activity, weather circumstances and vegetation (Stevens et al, 1995;Belleau et al, 2006;Smolander et al, 2008;Achat et al, 2015;Bergholm et al, 2015). These interactions can result in varying impacts of harvest residues on leaching, ranging from increased leaching following WTH (Fahey et al, 1991) or SOH (Valinia et al, 2021) to negligible differences observed between SOH and WTH (Mann et al, 1988;Sarkkola et al, 2016). Presence of harvest residues may also affect the microclimate and the vegetation which can either positively or negatively influence seedling growth, whereby seedling can reduce post-harvest leaching (Fahey et al, 1991;Thiffault et al, 2011).…”

Section: General Introductionmentioning

confidence: 99%

Impacts of harvesting practices on nutrient balances of forests under high nitrogen deposition

Vos

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Webster et al., 2022). Therefore, to increase the reliability of the forest nutrient budget, it is of high importance to better quantify and understand post-harvest nutrient dynamics in relation to forest management practices, and account for possible effects of species and soil type. The effects of tree species and of forest management practices, including harvest intensity, harvest method, and post-harvest soil preparation which all affect the nutrient budget (Akselsson et al., 2007b;Piirainen et al., 2007;Thiffault et al., 2011;Egnell, 2017), are discussed in detail below. The influence of tree species on forest nutrient budgetsTree species can strongly influence the forest nutrient budget as tree species vary in the nutrient concentrations of their tissues, their total aboveground biomass and, therefore, in their nutrient stocks that will be exported by harvest (

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Interactive effects of light and nutrients on stream algal growth modified by forest management in boreal landscapes

Burrows

Jonsson

Fältström

et al. 2021

Forest Ecology and Management

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Intensified forestry as a climate mitigation measure alters surface water quality in low intensity managed forests

Cited by 6 publications

References 66 publications

Transitioning from anthropogenic to natural acidification in a humic catchment in Norway: projections of deposition and climate change effects

Transitioning from anthropogenic to natural acidification in a humic catchment in Norway: projections of deposition and climate change effects

Impacts of harvesting practices on nutrient balances of forests under high nitrogen deposition

Interactive effects of light and nutrients on stream algal growth modified by forest management in boreal landscapes

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