30-year cone production dynamics in Siberian stone pine (Pinus sibirica) in the southern boreal zone: a causal interpretation

Горошкевич, С. Н.; Велисевич, С. Н.; Popov, Aleksandr G.; Khutornoy, Oleg V.; Vasilyeva, Galina

doi:10.5091/plecevo.2021.1793

Cited by 4 publications

(2 citation statements)

References 54 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Human interference in the development of plant communities disrupts the course of natural selection, therefore, changes the structure of diversity, deforms the genotypic composition of populations, thereby reducing their adaptive potential [3]. Indeed, seed productivity in nearsettlement siberian stone pine forests is significantly higher than in taiga forests [4], but seed quality, on the contrary, is significantly lower [5], which we assume is related to the low level of natural selection in artificial forests.…”

Section: Introductionmentioning

confidence: 78%

Seed yield structure in taiga and sub-settlement Siberian stone pine forests: level, and nature of differences

Velisevich,

Popov,

Goroshkevich

2023

E3S Web of Conf.

Self Cite

View full text Add to dashboard Cite

On the example of Siberian stone pine, seed productivity was analysed in two stands that differed in origin and formation conditions. The cone yield was analysed in years with different levels of seed production in the period from 2016 to 2019. In terms of the number of cones per tree, the sub-settlement Siberian stone pine forest was 2-3 times superior to the taiga Siberian stone pine forest. The level of individual variability in the number of cones in the near-settlement Siberian stone pine forest was significantly lower than in the taiga forest. There is reason to believe that the high level of variability is likely related to a more pronounced differentiation of the stand by crown size. The number of dead ovules in the Siberian stone pine forest in settlement is 60-70% higher than in the taiga forest. Due to high “mortality” of ovules and high variability of this trait, the number of filled seeds in the near-settlement Siberian stone pine forest is much lower, and variability in the number of complete seeds is much higher than in taiga Siberian stone pine forest. When there are few filled seeds in a cone, the size of each of them increases. Therefore, the average weight of one filled seed is higher in the subsettlement Siberian stone pine forest than in the taiga forest. Thus, the quality of the cones in the years of average and especially high yield in the near-settlement Siberian stone pine forest is much lower, and the level of variability of the traits that characterise it is much higher, and the distribution of the traits is characterised by a pronounced negative kurtosis. Obviously, these peculiarities of the near-settlement Siberian stone pine forest are related to human interference in the course of its development, which disturbed the course of natural selection and deformed the genotypic composition of the population.

show abstract

Section: Introductionmentioning

confidence: 78%

Seed yield structure in taiga and sub-settlement Siberian stone pine forests: level, and nature of differences

Velisevich,

Popov,

Goroshkevich

2023

E3S Web of Conf.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Unfortunately, only individual links in the complex "seed-nutcracker-seedling" chain are addressed in the majority of studies on this topic. For example, there are studies focusing on the dynamics of yield and seed productivity of forest stands [8][9][10][11] or seed dispersal and storage by nutcrackers [12][13]. In some cases, only a general prediction is made as to how these factors affect the subsequent regeneration.…”

Section: Introductionmentioning

confidence: 99%

Regeneration of Pinus sibirica Du Tour as a result of trophic relationships with the thin-billed nutcracker (Nucifraga caryocatactes macrorhynchos Brehm C L)

Tantsyrev,

Ivanova,

Petrova

2023

BIO Web Conf.

View full text Add to dashboard Cite

Identifying the patterns of dynamics of natural populations of woody plants at the stage of their renewal is one of the main problems of forest ecology. The reforestation process is determined by both the dynamics of seed production and the specificity of seed dispersal of forest tree species. The five-needled pine renewal the Cembrae subsection with wingless seeds depends on birds of the genus Nucifraga sp., which store and spread their seeds. The aim of this study is to determine the relationship between seed production and regeneration of Pinus sibirica Du Tour using the thin-billed nutcracker (Nucifraga caryocatactes macrorhynchos Brehm C. L.) as a mediator. Long-term studies of these relationships have been carried out in the Siberian pine forests of the North Ural Mountains. As a result, a paradoxical conclusion is made that the number of Nucifraga birds during the period of storing and spreading of seeds in the previous year is a key factor in the abundance of Pinus sibirica seedlings. In turn, the number of seeds, both from the previous year and the current year, affects the number of Nucifraga birds.

show abstract

Geographical Peculiarities of Pinus sibirica Du Tour Natural Regeneration as Related to its Seed Crops

Tantsyrev,

Shobairi,

Usoltsev

et al. 2024

Curr. World Environ

View full text Add to dashboard Cite

Forest ecology faces a significant challenge in understanding the dynamics of populations of forest-forming trees during their renewal phase, as it shapes the subsequent development and structure of forest ecosystems. The forest regeneration process relies on the dynamics of the seed yield of the woody plants and the unique characteristics of their distribution. In the case of the Cembrae sp. five-needled pines belonging, which have wingless seeds, their renewal is closely linked to the activities of Nucifraga sp. birds that scatter the seeds to create food reserves in the soil. This research aims to explore the geographical variations of Siberian stone pine (Pinus sibirica Du Tour) natural regeneration as a function of seed abundance. This study was conducted in three Russian mountain regions known for their forests predominated by Pinus sibirica: the Aldan Highlands, the Northern Urals, and the Khamar-Daban Mountains. It was discovered that each region exhibited distinct patterns in both cone yields and Pinus sibirica regeneration. The fluctuations in the thin-billed nutcracker (Nucifraga caryocatactes macrorhynchos Brehm C. L.) populations during the seed harvest season, influenced by the nature of the seed production dynamics in each region, we believed to play a major role in the quantity of Pinus sibirica seedlings appearing in the subsequent year. These findings explain the observed variations in the renewal dynamics of annual emergent seedlings of Pinus sibirica and its reliance on cone yield in the examined regions.

show abstract

30-year cone production dynamics in Siberian stone pine (Pinus sibirica) in the southern boreal zone: a causal interpretation

Cited by 4 publications

References 54 publications

Seed yield structure in taiga and sub-settlement Siberian stone pine forests: level, and nature of differences

Seed yield structure in taiga and sub-settlement Siberian stone pine forests: level, and nature of differences

Regeneration of Pinus sibirica Du Tour as a result of trophic relationships with the thin-billed nutcracker (Nucifraga caryocatactes macrorhynchos Brehm C L)

Geographical Peculiarities of Pinus sibirica Du Tour Natural Regeneration as Related to its Seed Crops

Contact Info

Product

Resources

About