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Acta Forestalia Fennica
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Articles containing the keyword 'collectable goods'.

Category: Research article

article id 10043, category Research article
Outi Manninen, Rainer Peltola. (2019). Continuous picking may increase bilberry yields. Silva Fennica vol. 53 no. 3 article id 10043. https://doi.org/10.14214/sf.10043
Highlights: Bilberry fruit production and fruit set increased under continuous picking by rake in three-year study; Bilberry flower number and fruit mass were not affected by picking; Bilberry compensated for biomass loss; The highest relative deciduous species abundance was found in the picking treatment plots at the end of the experiment.

Accumulated knowledge about the health benefits of bilberry (Vaccinium myrtillus L.) has increased the demand and utilization of wild bilberries. Intensive berry picking by metal rakes is believed to cause damage in bilberry stands in areas under continuous picking pressure, and hence expected to hamper the production of berries in forthcoming years. We conducted an experiment to examine the effect of continuous bilberry picking by metal rake on the number of bilberry flowers and fruits, fruit mass, compensation for biomass loss after picking, and plant functional type abundance in the understorey in northern Finland. Bilberry lost less than 0.5% of its biomass annually during the three-year study period due to rake harvesting. The number of flowers was not significantly affected by damage caused by picking, while both fruit production and fruit set increased without any indication of reduced fruit mass, and biomass loss was fully compensated. Moreover, the relative abundance of plant functional types was not affected by picking during the study. We suggest that the low intensity and timing of damage act as a buffer against the adverse effects of picking on bilberry fruit production. On the basis of this study, it is reasonable to anticipate that there are no indications that current intensive berry picking would not be on a sustainable level.

  • Manninen, Natural Resources Institute Finland (Luke), Bioeconomy and environment, Paavo Havaksentie 3, FI-90014 University of Oulu, Finland ORCID ID:E-mail: outi.manninen@luke.fi (email)
  • Peltola, Natural Resources Institute Finland (Luke), Bioeconomy and environment, Ounasjoentie 6, FI-96200 Rovaniemi, Finland ORCID ID:E-mail: rainer.peltola@luke.fi

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