Simulated effects of browsing on the production and economic values of Scots pine (<i>Pinus sylvestris</i>) stands

Nilsson, Urban; Berglund, Mattias; Bergquist, Jonas; Holmström, Hampus; Wallgren, Märtha

doi:10.1080/02827581.2015.1099728

Cited by 18 publications

(12 citation statements)

References 13 publications

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“…Stand regeneration is a primary cost associated with production forestry in Sweden, as over 80% of Swedish forest owners regenerate with commercially improved seedlings. Browsing damage not only risks this investment, but can also compromise the stand's subsequent development and production outcomes (Nilsson et al 2016).…”

Section: Discussionmentioning

confidence: 99%

The tree species matters: Biodiversity and ecosystem service implications of replacing Scots pine production stands with Norway spruce

Felton¹,

Petersson²,

Nilsson³

et al. 2019

Ambio

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The choice of tree species used in production forests matters for biodiversity and ecosystem services. In Sweden, damage to young production forests by large browsing herbivores is helping to drive a development where sites traditionally regenerated with Scots pine (Pinus sylvestris) are instead being regenerated with Norway spruce (Picea abies). We provide a condensed synthesis of the available evidence regarding the likely resultant implications for forest biodiversity and ecosystem services from this change in tree species. Apart from some benefits (e.g. reduced stand-level browsing damage), we identified a range of negative outcomes for biodiversity, production, esthetic and recreational values, as well as increased stand vulnerability to storm, frost, and drought damage, and potentially higher risks of pest and pathogen outbreak. Our results are directly relevant to forest owners and policy-makers seeking information regarding the uncertainties, risks, and trade-offs likely to result from changing the tree species in production forests.

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Section: Discussionmentioning

confidence: 99%

The tree species matters: Biodiversity and ecosystem service implications of replacing Scots pine production stands with Norway spruce

Felton¹,

Petersson²,

Nilsson³

et al. 2019

Ambio

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“…Scots pine is browsed by ungulates mainly in winter 33 . On Scots pine, even low levels of browsing can have significant economic impact 34 .…”

Section: Methodsmentioning

confidence: 99%

Interacting effects of insect and ungulate herbivory on Scots pine growth

Nordkvist

Klapwijk

Edenius

et al. 2020

Sci Rep

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Most plants are subjected to damage from multiple species of herbivores, and the combined impact on plant growth can be non-additive. Since plant response to herbivores tends to be species specific, and change with repeated damage, the outcome likely depend on the sequence and number of attacks. There is a high likelihood of non-additive effects on plant growth by damage from mammals and insects, as mammalian herbivory can alter insect herbivore damage levels, yet few studies have explored this. We report the growth response of young Scots pine trees to sequential mammal and insect herbivory, varying the sequence and number of damage events, using an ungulate-pine-sawfly system. Combined sawfly and ungulate herbivory had both additive and non-additive effects on pine growth—the growth response depended on the combination of ungulate browsing and sawfly defoliation (significant interaction effect). Repeated sawfly herbivory reduced growth (compared to single defoliation) on un-browsed trees. However, on browsed trees, depending on when sawfly defoliation was combined with browsing, trees exposed to repeated sawfly herbivory had both higher, lower and the same growth as trees exposed to a single defoliation event. We conclude that the sequence of attacks by multiple herbivores determine plant growth response.

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“…Browsing was previously found to have a substantial effect on both production and economy in Scots pine stands (Nilsson et al, 2016). Thus fencing might have led to overestimates of volume production.…”

Section: Volume Productionmentioning

confidence: 99%

Modelling effects of regeneration method on the growth and profitability of Scots pine stands

Lula

Trubins

Ekö

et al. 2021

Scandinavian Journal of Forest Research

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Despite numerous studies there are still uncertainties regarding regeneration strategies that are optimal for productivity and profitability. Thus the aim of this study was to establish effects of three regeneration methods (planting, direct seeding and natural regeneration) on the production and profitability of Scots pine (Pinus sylvestris L.) stands in southern Sweden. Long-term stand development was simulated, with the StandWise application of the Heureka decision support system, starting from short-term regeneration outcomes observed in several field experiments at sites with relatively high productivity (H100 site indices, i.e. heights of dominant pines at 100 years: 27-30 m). Financial and production results of each approach were assessed in terms of Land Expectation Value (LEV) and Mean Annual Increment (MAI), respectively, across a whole rotation. Planting on clear-cuts with 1600-3265 seedlings per hectare resulted in the highest profitability and production, whereas high-density planting (10,000 seedlings per hectare) resulted in negative LEV. However, sensitivity analysis showed that the results depended on the interest rate. Retention of seed-trees incurred additional costs relative to single-operation clear felling. In contrast, retention of shelter-trees had good financial results (at 0% and 2.5% interest rate), although they depended on the site index and average tree size.

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Simulated effects of browsing on the production and economic values of Scots pine (Pinus sylvestris) stands

Cited by 18 publications

References 13 publications

The tree species matters: Biodiversity and ecosystem service implications of replacing Scots pine production stands with Norway spruce

The tree species matters: Biodiversity and ecosystem service implications of replacing Scots pine production stands with Norway spruce

Interacting effects of insect and ungulate herbivory on Scots pine growth

Modelling effects of regeneration method on the growth and profitability of Scots pine stands

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