Seed production of a masting dwarf shrub, &lt;i&gt;Vaccinium myrtillus&lt;/i&gt;, in relation to previous reproduction and weather

Selås, Vidar

doi:10.1139/cjb-78-4-423

Cited by 8 publications

(8 citation statements)

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“…In this study, between year variation in berry production was similar in the control and picking treatments, suggesting that other than picking method determined the berry production. According to generally accepted view, the variation in wild berry yields result from climatic conditions, such as temperature, precipitation and frost injuries during different stages of berry production (Raatikainen and Vän-ninen 1988;Tolvanen 1997;Wallenius 1999;Selås 2000;Krebs et al 2009;Gerdol et al 2013). In this study, wild berry production was highest in 2010 compared to other years.…”

Section: Discussionmentioning

confidence: 49%

“…Different between year variation in berry production suggests that the response of berry yields to climatic variables may be species specific (Krebs et al 2009). Moreover, both current and previous year's climatic variables may affect the berry production of long-lived wild berry species (Raatikainen and Vänninen 1988;Wallenius 1999;Selås 2000;Krebs et al 2009). It has been observed that weather conditions during flower organ development in the autumn are equally important for berry production than weather conditions during the other stages of flower and berry development (Selås 2000).…”

Section: Discussionmentioning

confidence: 99%

“…Moreover, both current and previous year's climatic variables may affect the berry production of long-lived wild berry species (Raatikainen and Vänninen 1988;Wallenius 1999;Selås 2000;Krebs et al 2009). It has been observed that weather conditions during flower organ development in the autumn are equally important for berry production than weather conditions during the other stages of flower and berry development (Selås 2000). Climatic variables also affect indirectly through pollinator activity to the berry production (Jacquemart and Thompson 1996).…”

Section: Discussionmentioning

confidence: 99%

“…Climatic variables also affect indirectly through pollinator activity to the berry production (Jacquemart and Thompson 1996). It also has been suggested that the berry production of Vaccinium-species may fluctuate regularly (Vander Kloet and Cabilio 1996;Wallenius 1999;Selås 2000). For example, Selås (2000) reported peak in the production of berries at intervals of 2-5 years for bilberry, and this periodicity was dependent on previous year's berry production and weather conditions.…”

Section: Discussionmentioning

confidence: 99%

“…It also has been suggested that the berry production of Vaccinium-species may fluctuate regularly (Vander Kloet and Cabilio 1996;Wallenius 1999;Selås 2000). For example, Selås (2000) reported peak in the production of berries at intervals of 2-5 years for bilberry, and this periodicity was dependent on previous year's berry production and weather conditions. In summary, plastic hand rake and metal rake removed equal amount of bilberry and lingonberry biomass except when the metal rake usage was exceptionally powerfully.…”

Section: Discussionmentioning

confidence: 99%

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Effects of picking methods on the berry production of bilberry (Vaccinium myrtillus), lingonberry (V. vitis-idaea) and crowberry (Empetrum nigrum ssp. hermaphroditum) in Northern Finland

Manninen¹,

Peltola²

2013

Silva Fenn.

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Effects of picking methods on the berry production of bilberry (Vaccinium myrtillus), lingonberry (V. vitis-idaea) and crowberry (Empetrum nigrum ssp. hermaphroditum) in Northern FinlandManninen O. H., Peltola R. (2013). Effects of picking methods on the berry production of bilberry (Vaccinium myrtillus), lingonberry (V. vitis-idaea) and crowberry (Empetrum nigrum ssp. hermaphroditum) in Northern Finland. Silva Fennica vol. 47 no. 3 article id 972. 12 p. Highlights• Berry production of bilberry, lingonberry and crowberry was studied after picking the berries by plastic hand rake, long-handed metal rake, and powerful picking by long-handed metal rake.• Berry production was not affected by the damage caused by any of the picking method.• Current commercial picking methods do not endanger the berry production of the berry species at least in short-term. AbstractThe effect of commercial wild berry picking on berry yields is under a strong public debate in Finland. Especially high concern has been arisen over damages caused by metal rakes used in commercial picking to subsequent berry production. We studied the berry production of bilberry (Vaccinium myrtillus L.), lingonberry (V. vitis-idaea L.) and crowberry (E. nigrum ssp. hermaphroditum (Hagerup) Böcher) after picking the berries by 1) plastic hand rake, 2) long-handed metal rake and 3) powerful picking by long-handed metal rake, in northern Finland during 2010-2012. In the powerful long-handed metal rake treatment the aboveground vegetation was raked twice to the moss layer after berry picking. Biomass, which was removed from the vegetation by rakes was collected and used as a measure of the damage. We assumed that picking by plastic hand rake would result in lowest, long-handed metal rake intermediate and powerful picking by longhanded metal rake highest biomass loss from vegetation. The amount of biomass loss should in turn be reversely reflected into berry production. However, only the powerful picking by longhanded metal rake removed higher amount of biomass than other picking methods in bilberry and lingonberry. In crowberry, the amount of biomass removed by rakes increased from treatment to treatment. Contrary to our assumption, berry production of bilberry, lingonberry and crowberry was not affected by the damage caused by any of the picking method. We conclude that long-handed metal rake used in commercial picking is comparable to hand rake in terms of berry production.

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Section: Discussionmentioning

confidence: 49%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Effects of picking methods on the berry production of bilberry (Vaccinium myrtillus), lingonberry (V. vitis-idaea) and crowberry (Empetrum nigrum ssp. hermaphroditum) in Northern Finland

Manninen¹,

Peltola²

2013

Silva Fenn.

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Directed endozoochorous dispersal by scavengers facilitate sexual reproduction in otherwise clonal plants at cadaver sites

Arnberg

Frank

Blaalid

et al. 2022

Ecology and Evolution

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The regeneration niche of many plant species involves spatially and temporally unpredictable disturbances, called recruitment windows of opportunity. However, even species with clear dispersal adaptations such as fleshy berries may not successfully reach such elusive regeneration microsites. Ericaceous, berry‐producing species in the northern hemisphere demonstrate this dispersal limitation. They are said to display a reproductive paradox owing to their lack of regeneration in apparently suitable microsites despite considerable investment in producing large quantities of berries. Cadavers generate vegetation‐denuded and nutrient‐rich disturbances termed cadaver decomposition islands (CDIs). Cadavers attract facultative scavengers with considerable capacity for endozoochorous seed dispersal. We hypothesize that CDIs facilitate recruitment in berry‐producing ericaceous species due to endozoochorous dispersal directed toward favorable microsites with low competition. We examined seedling establishment within a permanent, semi‐regular 10 × 10 m grid across an ungulate mass die‐off on the Hardangervidda plateau in southeastern Norway. Competing models regarding the relative importance of factors governing recruitment were evaluated, specifically cadaver location (elevated seed rain) and microsite conditions (competition). We found that CDIs did facilitate seedling establishment, as cadaver density was the best predictor of seedling distribution. Other important factors governing seedling establishment such as percentage cover of soil and vascular plants alone were inadequate to explain seedling establishment. Synthesis: This study provides a novel understanding of sexual reproduction in species with cryptic generative reproduction. The directed nature of endozoochorous dispersal combined with long‐distance dispersal abilities of medium to large vertebrate scavengers toward cadavers allows plants to exploit the advantageous but ephemeral resource provided by CDIs.

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Geographical variation in climatic cues for mast seeding of Fagus crenata

et al. 2008

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Geographical variation in climatic cues for masting of Fagus crenata Blume, which is the most dominant tree species in Japanese temperate forests, was investigated in the northern part of Japan, i.e., the Tohoku district of Honshu Island and the Oshima Peninsula of Hokkaido Island. The data obtained after an 18-year assessment (1989)(1990)(1991)(1992)(1993)(1994)(1995)(1996)(1997)(1998)(1999)(2000)(2001)(2002)(2003)(2004)(2005)(2006) of 163 stands, covering an area of ca. 200 9 500 km 2 area, were used in this study. In all stands, mast seeding occurred three times (1995, 2000 and 2005) during the study period and the coefficient of annual variation (CV) in seedfall density was 0.94. Based on cluster analysis, the stands were classified into each of the seven groups, in which the seedfall density was temporally synchronized among the stands and showed higher values of CV (1.04-1.79). These groups were distributed spatially exclusively at the scale of 80-200 km. By selecting the tree model based on AIC values, lower temperature in spring, higher temperature in summer and seedfall density in a year were proved to have a decisive influence on the seedfall density in the subsequent year. The effects of the first two climatic cues overwhelm that of the seedfall density. Lower temperature in spring served as a cue mostly for the population in the Oshima Peninsula, while higher temperature in summer served as a cue for the populations in the Tohoku district. If this suggests a genetic variation in relation to cues, climatic changes (e.g., global warming) will have different impacts on seed production of different F. crenata populations. However, it remains to be tested in future studies whether multiple climatic cues simply reflect regionally variable climatic conditions or not.

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Seed production of a masting dwarf shrub, <i>Vaccinium myrtillus</i>, in relation to previous reproduction and weather

Cited by 8 publications

References 0 publications

Effects of picking methods on the berry production of bilberry (Vaccinium myrtillus), lingonberry (V. vitis-idaea) and crowberry (Empetrum nigrum ssp. hermaphroditum) in Northern Finland

Effects of picking methods on the berry production of bilberry (Vaccinium myrtillus), lingonberry (V. vitis-idaea) and crowberry (Empetrum nigrum ssp. hermaphroditum) in Northern Finland

Directed endozoochorous dispersal by scavengers facilitate sexual reproduction in otherwise clonal plants at cadaver sites

Geographical variation in climatic cues for mast seeding of Fagus crenata

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