Germination of Tree Seed Stored in a Partially Afterripened Condition

Suszka, B.

doi:10.17660/actahortic.1978.83.24

Cited by 2 publications

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“…Q. rubra seeds and seedlings are highly susceptible to soil/air temperature and moisture (Crow, 1988;Dey & Parker, 1996;Noland et al, 2013;Suszka & Krawiarz, 1971;Suszka & Tylkowski, 1981), thus some acorns deposited under shrubs (in the bare soil) could die due to extremely low temperatures noted in winter 2018 (Figure S1).…”

Section: Acorn and Seedling Survival And Seedling Growthmentioning

confidence: 99%

Verified hypotheses on the “nurse” and “burial” effects on introduced Quercus rubra regeneration in a mesic Scots pine forest

Woziwoda,

Dyderski,

Gręda

et al. 2024

Ecology and Evolution

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A previous study on the encroachment of North American northern red oak Quercus rubra L. into the mesic Scots pine forest (in central Poland) revealed high abundances of seedlings and saplings under shrubs, with lower abundances in open areas or clumps of bilberry Vaccinium myrtillus L. It was unclear whether the regeneration success of Q. rubra is enhanced by the presence of shrubs due to their “nurse effect”, and how burying acorns of different sizes in soil or moss affects the survival of oak seeds and seedlings (a “burial effect”). Results of a previous observational study were verified in an experimental study: a pool of 900 large‐, medium‐, and small‐sized acorns was sown under moss cover in open areas and within bilberry clumps and in soil under shrubs in 2018 and monitored for 3 years in natural conditions. The majority of sown acorns were lost, mainly due to acorn pilferage, lack of germination and the death of sprouting acorns. However, acorn and seedling survival depended significantly on acorn size and differed among the microsites studied. Viable seedlings were twice as likely to develop from large‐ and medium‐sized as from small‐sized acorns, and they grew mainly from acorns sown under moss cover, confirming a positive “burial effect.” Seedling survival was three times higher in bilberry and open areas, than under shrubs; however, seedlings “nursed” by shrubs were less threatened by large ungulates. Only a small part of the pool of sown acorns contributes to the reproductive success of Q. rubra in the mesic Scots pine forest. Microsites characteristic to this type of forest are suitable for northern red oak regeneration; however, bilberry favors acorn survival and germination and early seedling growth, moss cover favors acorn survival and germination, while shrubs protect surviving seedlings from herbivory.

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Section: Acorn and Seedling Survival And Seedling Growthmentioning

confidence: 99%

Verified hypotheses on the “nurse” and “burial” effects on introduced Quercus rubra regeneration in a mesic Scots pine forest

Woziwoda,

Dyderski,

Gręda

et al. 2024

Ecology and Evolution

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“…Seeds can be stored for 3 years at -3°C with 24-32% mc (Suszka 1978a(Suszka , 1978b 0 Tab. 4 -Intensity ratings for the ratio of present to potential distribution of sycamore maple.…”

Section: Sycamore Maple Invasivenessmentioning

confidence: 99%

Spread intensity and invasiveness of sycamore maple (Acer pseudoplatanus L.) in Lithuanian forests

Straigytė¹,

Baliuckas²

2015

iForest

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© iForest -Biogeosciences and Forestry IntroductionDuring the early 19 th century, the practice of planting non-native tree species in Lithuania was initiated with the primary goal of increasing wood productivity. It was unknown at the time certain species would successfully undergo naturalization, and subsequently exhibit a widespread geographic distribution, threatening natural ecosystems. Vitousek & Walker (1989) characterized the alterations of the community stability and structure due to non-native tree species, which successfully proliferated and became invasive community members, limiting native plant growth (Lichstein et al. 2004). Boxelder (Acer negundo L.), black locust (Robinia pseudoacacia L.), and black cherry (Prunus serotina Ehrh.) are included in the list of invasive species in Lithuania, and additional alien species are currently being considered for invasive status. One of the more problematic non-native species in Lithuania is the sycamore maple (Acer pseudoplatanus L., Sapindaceae), characterized by rapid growth (when grown on suitable sites) and potentially high timber prices (Hein et al. 2009). Sycamore maple is mostly a central-European, mountain species reaching its northeastern range limit in Poland. Sycamore is rarely found in pure stands covering small areas on steep slopes on limestones where it forms its own communities (Acerion pseudoplatani alliance -Jones 1945). More frequently it grows in mixed broad-leaved forests of the Carpinion and Alno-Padion alliances (Boratynski 1999). In Lithuania, the species grows in fertile moist sites and in secondary forests. Moreover, it is shade and frost tolerant (Navasaitis 2004), and in naturally regenerated stands often grows mixed with ash (Binggeli 1992). Typically, the species begins bearing fertile seeds at approximately 20 to 30 years of age (Burschel & Huss 1997, Navasaitis 2004.Sycamore maple is well adapted to the current climatic conditions of central Europe, and is expected to expand beyond its current distributional limits (Kölling & Zimmermann 2007, Kölling 2007. This species has become naturalized in many countries, including Spain, Turkey, Ireland, Sweden, North and South America, India, and New Zealand (Binggeli 1992, Rusanen & Myking 2003. In Lithuania, sycamore maple may reach up to 24 m of height and 1 m of stem diameter (Januškevičius et al. 2006), and is mostly found in parks and gardens, with only few forest plantations.The question we pose is whether sycamore maple may be considered an invasive nonnative tree in Lithuania. Williamson & Fitter (1996) estimated that only approximately 10% of naturalized plant species become invasive and produce significant economic and ecological impacts. Historical records indicated sycamore maple was introduced to the Vilnius University Botanical Garden in 1802 (Skridaila 2001), and since then it readily spreads into local forest stands. Informed decisions must be made to control invasive trees in forests, which requires establishing the relative importance of each alien tree.The principal...

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Germination of Tree Seed Stored in a Partially Afterripened Condition

Cited by 2 publications

References 0 publications

Verified hypotheses on the “nurse” and “burial” effects on introduced Quercus rubra regeneration in a mesic Scots pine forest

Verified hypotheses on the “nurse” and “burial” effects on introduced Quercus rubra regeneration in a mesic Scots pine forest

Spread intensity and invasiveness of sycamore maple (Acer pseudoplatanus L.) in Lithuanian forests

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