Changes in size of soil seed bank in Robinia pseudoacacia L. (Leguminosae), an exotic tall tree species in Japan: Impacts of stand growth and apicultural utilization

The intensity of damaging the nectar and pollen trees of forest lands, parks and woods in the conditions of Vinnytsia region has been studied. It has been found that in the zones of the highest local overspreading of Viscum album L. on the nectar and pollen trees, the following sequence of their damage is observed, in particular, in the conditions of forest lands: Tilia cordata L.-Tilia platyphyllos L. -Acer platanoides L.- Acer tataricum L.; in the parks: Acer platanoides L.- Acer tataricum L.- Tilia cordata L.- Acer campestre L.- Tilia platyphyllos L. - Robinia pseudoacacia L.; in the woods: Robinia pseudoacacia L. - Tilia platyphyllos L. - Acer tataricum L. It depended both on the composition of the nectar and pollen trees and their number in the area of distribution of the parasite. It was found that the level of damage to the nectar-dust-bearing trees of forest lands, parks and forest strips was respectively within 11.7% - 34.6%, 28.5% - 85.5% and 38.4% - 84.8%. Characterizing the intensity of distribution of white mistletoe within the forest lands, it should be noted that damage to the Tilia cordata L. – 34,6%, Tilia platyphyllos L. – 23,5%, Acer platanoides L. and Acer tataricum L.– 25,0% and 11,7% . In the conditions of park plantations, damage to Viscum album L.: Tilia cordta– 51,6%, Tilia platyphyllos L. – 52,9%, Viscum album L. – 28,5%, Acer platanoides L. – 85,5%, Acer campestre L. – 71,4% and Acer tataricum L.– 63,6%. Analysis of the intensity of Viscum album L. distribution on the nectar-pollen-bearing trees of the forest area under the highways showed that this parasite was damaged: Tilia platyphyllos L. – 38,4%, Viscum album L. – 84%, Acer campestre L. – 42,8%. The intensity of damage to nectar-pollen was found to depend on the dominant tree species in the area of local Viscum album L. In the woodland, a greater proportion of the nectar-bearing trees were Tilia, in the park zones – Acer platanoides L. and in the forest strips -– Viscum album L., at the same time, and a larger percentage were observed of damaged trees in these species. The distribution of Viscum album L. depended not only on the breed of nectar-pollen-bearing trees, but also on the number of trees of a particular variety in the area of their local damage by this parasite.

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ESTUDOS DE UM BANCO DE SEMENTES NO SOLO DE UM FRAGMENTO FLORESTAL COM Araucaria angustifolia NO ESTADO DO PARANÁ

FLORESTA ◽

10.5380/rf.v41i2.21881 ◽

2011 ◽

Vol 41 (2) ◽

Cited By ~ 1

Author(s):

Marcelo Lima de Souza ◽

Antônio Carlos Nogueira ◽

Renato Luiz Grisi Macedo ◽

Carlos Roberto Sanquetta ◽

Nelson Venturin

Keyword(s):

Vertical Distribution ◽

Seed Bank ◽

Tree Species ◽

Soil Seed Bank ◽

Seedling Emergence ◽

Forest Tree ◽

Araucaria Angustifolia ◽

Forest Fragment ◽

Regeneration Strategy ◽

Soil Layers

O objetivo do presente trabalho foi estudar o banco de sementes no solo de um fragmento florestal com Araucaria angustifolia (Bert.) O. Ktze. no estado do Paraná. Para isso, investigou-se a distribuição vertical das sementes, a influência do sombreamento sobre a emergência das plântulas, sua identificação e quantificação. A distribuição vertical de sementes em quatro camadas foi analisada através da identificação e quantificação das plântulas emergentes em casa de vegetação, levando em consideração o nível de sombreamento. Os dados referentes ao banco de sementes foram obtidos no período de 210 dias, por meio de identificação botânica e contagens semanais das plântulas germinadas das quatro profundidades de solo em quatro parcelas experimentais. As amostras foram colocadas para germinar sob 0 e 50% de sombreamento em casa de vegetação. Os resultados obtidos no estudo de banco de sementes permitiram as seguintes conclusões: o banco de sementes parece ser pobre em espécies arbóreas e abundante em espécies herbáceas; o banco de sementes das espécies arbóreas foi maior na segunda camada; ocorreu maior germinação sob 0% de sombreamento. Provavelmente, a estratégia de regeneração da maioria das espécies presentes nessa área de estudo parece não ser pelo banco de sementes no solo.Palavras-chave: Banco de sementes no solo; Araucaria angustifolia; fragmento florestal. AbstractSoil seed bank analysis in a forest fragment with Araucaria angustifolia, State of Parana. A research on soil seed bank had been developed in an Araucaria angustifolia (Bert.) O. Ktze. forest fragment in the State of Paraná. It had surveyed vertical distribution of seeds within the soil and shadow influence on seedling emergence, besides the improvement of their identification and quantity measuring. Vertical distribution of seeds in four soil layers had been analyzed by identification and quantification of germinated seedlings in greenhouse, with full light or 50% shaded conditions. Data related to seedlings of trees, weeds, grasses and lianas were calculated separately in weekly intervals during a 210-day period. Results suggested that the soil seed bank in this forest was poor in relation to tree species, in diversity as far as density. On the other hand, seeds of grasses and weeds decreased along vertical soil profile, and forest tree species tended to abundance in the 5-10 cm layer. Germination was higher with full light than in 50% shaded conditions. Probably, regeneration strategy for most species in this focused area doesn’t seem to be soil seed bank.Keywords: Soil seed bank; Araucaria angustifolia; forest fragment.

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Seed Rain, Soil Seed Bank, and Seedling Emergence Indicate Limited Potential for Self-Recovery in a Highly Disturbed, Tropical, Mixed Deciduous Forest

Plants ◽

10.3390/plants9101391 ◽

2020 ◽

Vol 9 (10) ◽

pp. 1391

Author(s):

Anussara Chalermsri ◽

La-aw Ampornpan ◽

Witoon Purahong

Keyword(s):

Mortality Rate ◽

Seed Bank ◽

Tree Species ◽

Deciduous Forest ◽

Soil Seed Bank ◽

Seedling Emergence ◽

Seed Rain ◽

Reproductive Phenology ◽

Mixed Deciduous Forest ◽

Standing Vegetation

Human activity negatively affects the sustainability of forest ecosystems globally. Disturbed forests may or may not recover by themselves in a certain period of time. However, it is still unclear as to what parameters can be used to reasonably predict the potential for self-recovery of human-disturbed forests. Here, we combined seed rain, soil seed bank, and seed emergence experiments to evaluate the potential for self-recovery of a highly disturbed, tropical, mixed deciduous forest in northeastern Thailand. Our results show a limited potential for self-recovery of this forest due to low seedling input and storage and an extremely high mortality rate during the drought period. There were 15 tree species of seedlings present during the regeneration period in comparison with a total number of 56 tree species in current standing vegetation. During the dry season, only four tree seedling species survived, and the highest mortality rate reached 83.87%. We also found that the correspondence between the combined number of species and composition of plant communities obtained from seed rain, soil seed bank, and seedling emergence experiments and the standing vegetation was poor. We clearly show the temporal dynamics of the seed rain and seedling communities, which are driven by different plant reproductive phenology and dispersal mechanisms, and drought coupled with mortality. We conclude that this highly disturbed forest needs a management plan and could not recover by itself in a short period of time. We recommend the use of external seed and seedling supplies and the maintenance of soil water content (i.e., shading) during periods of drought in order to help increase seedling abundances and species richness, and to reduce the mortality rate.

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Tree species determine soil seed bank composition and its similarity with understory vegetation in a semi-arid African savanna

Ecological Processes ◽

10.1186/s13717-017-0075-7 ◽

2017 ◽

Vol 6 (1) ◽

Cited By ~ 5

Author(s):

Zewdu Kelkay Tessema ◽

Belay Ejigu ◽

Lisanework Nigatu

Keyword(s):

Seed Bank ◽

Tree Species ◽

Soil Seed Bank ◽

Understory Vegetation ◽

African Savanna ◽

Semi Arid

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Regeneration Potential of Floodplain Forests Under the Influence of Nonnative Tree Species: Soil Seed Bank Analysis in Northern Italy

Restoration Ecology ◽

10.1111/rec.12027 ◽

2013 ◽

Vol 22 (1) ◽

pp. 22-30 ◽

Cited By ~ 11

Author(s):

Sandra Skowronek ◽

André Terwei ◽

Stefan Zerbe ◽

Inga Mölder ◽

Peter Annighöfer ◽

...

Keyword(s):

Seed Bank ◽

Tree Species ◽

Soil Seed Bank ◽

Northern Italy ◽

Floodplain Forests ◽

Regeneration Potential

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Effects of initial spacing on the stand structure and yield of young black locust (Robinia pseudoacacia L.) stands

International Journal of Horticultural Science ◽

10.31421/ijhs/15/3/831 ◽

2009 ◽

Vol 15 (3) ◽

Author(s):

K. Rédei

Keyword(s):

Tree Species ◽

Early Phase ◽

Stand Structure ◽

Black Locust ◽

Robinia Pseudoacacia ◽

Wood Quality ◽

Optimal Exploitation ◽

Initial Spacing ◽

Robinia Pseudoacacia L ◽

The Right

The choice of the right initial spacing of stands is one of the most decisive operations of a successful afforestation. It is even more important in the case of fast growing tree species grown in plantations; it is expressed in their early phase of development and in wood quality. The results of a 5-year long experiment with four treatments will be presented in this paper. They proved the priority of an initial spacing of 1.61.0 m in the majority of quality This treatment has been proved optimal exploitation of growing space by the young trees.

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Tending operation models for black locust (Robinia pseudoacacia L.) stands growing on sandy soils in Hungary

International Journal of Horticultural Science ◽

10.31421/ijhs/21/3-4./1166 ◽

2015 ◽

Vol 21 (3-4) ◽

Author(s):

K. Rédei ◽

Zs. Keserű ◽

B. Antal

Keyword(s):

Forest Regeneration ◽

Black Locust ◽

Robinia Pseudoacacia ◽

Ecological Factors ◽

Sandy Soils ◽

Stand Growth ◽

Factors Influencing ◽

Integrated Research ◽

Development Approach ◽

Robinia Pseudoacacia L

A more intensive integrated research and development approach to the work carried out on the growth on sandy soils of stands of black locust (Robinia pseudoacacia L.) has been adopted in recent years, revealing several factors influencing stand growth. The fact that certain ecological factors influencing fundamentally the growth of trees have become unfavourable in Hungary in recent years has led to the more extensive use of black locust in the course of afforestation and forest regeneration schemes. The study presents a new, simplified tending operation model for black locust stands and age, growing space and target diameter models suitable for qualitaty log production and for mass assortments. The simplicity of these practice-orientedmodels may foster the qualitative development of black locust management in Hungary and in some other countries where this tree species may gain greater acceptance by landowners and the forest industry.

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Impact of Tree Age and Size on Selected Properties of Black Locust (Robinia pseudoacacia L.) Wood

Forests ◽

10.3390/f12050634 ◽

2021 ◽

Vol 12 (5) ◽

pp. 634

Author(s):

Szymon Bijak ◽

Hubert Lachowicz

Keyword(s):

Compression Strength ◽

Tree Species ◽

Black Locust ◽

Robinia Pseudoacacia ◽

Basic Density ◽

Ring Width ◽

Tree Age ◽

Dry Density ◽

Robinia Pseudoacacia L ◽

The Impact

Black locust (Robinia pseudoacacia L.) is a non-native tree species that occupies a remarkable area in the forests of western Poland. It is mainly cultivated for the bee-keeping purposes as well as for its high quality wood. We investigated the impact of tree age and diameter on the selected structural, physical and mechanical attributes of wood of black locust that grows in conditions of mesic oligotrophic site. We analysed 200 samples originating from 18 trees that varied with age (38, 60 and 71 years old) and diameter (thin, medium and thick specimen selected according to Hartig’s method). Individual wood properties were determined along with corresponding European or Polish standards. Structural and mechanical attributes were determined for moisture of 12%. We found significant impact of tree age on tree-ring width, latewood proportion, density, oven-dry density, basic density, share of woody substance, porosity, as well as radial, tangential, longitudinal and volumetric shrinkage, compression strength parallel to grain, static bending, coefficient of compression strength parallel to grain and coefficient of static bending. The older the trees, the higher values of individual attributes were observed. In turn, the effect of tree diameter was less profound and no significant impact of that feature was found for latewood proportion, anisotropy and almost all of the shrinkage parameters. Thin trees exhibited the lowest values of the analysed parameters, while medium ones—the highest. In general, the highest technical quality of the investigated wood can be found in the youngest trees, whose wood characterises with the properties significantly exceeding native Polish tree species such as oak or beech.

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