Long-term effect of whole tree biomass harvesting on ground cover vegetation in a dry Scots pine stand

Jansons, Āris; Robalte, Linda; Čakšs, Roberts; Matisons, Roberts

doi:10.14214/sf.1661

Cited by 8 publications

(6 citation statements)

References 14 publications

(22 reference statements)

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“…Frequency of fires has increased as a result of global warming (Flannigan et al, 2006). Habitat recover after fire disturbance differs from that of any other severe disturbance (Wang & Kemball, 2005) due to influence to recovery of trees as defining element of forest ecosystem (Mara Kitenberga et al, 2020), as well as effect on organic matter and thus disruption of nutrient supply differing from any other severe humaninduced or natural disturbance (Čakšs et al, 2018;Jansons et al, 2016;Samariks et al, 2020Samariks et al, , 2021. The development of burned biotope depends on how quickly the fire is extinguished and what is done with the stand after the fire, for example, whether salvage logging is carried out or left for natural regeneration (Kārkliņa et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Post fire ground vegetation development over 25 years

Freimane¹,

Čakša²,

Kārkliņa³

et al. 2021

Research for Rural Development

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Fire has been a part of natural disturbance regime in boreal and to some extent also hemiboreal forests, affecting soil and light conditions, seedbanks, trees and ground vegetation. The most significant factors affecting occurrence, severity and size of forest fires are anthropogenic, weather and the environment, all of which are changing due to human-caused climate change. This paper discusses medium term (25 years) vegetation development in five different biotopes after fire disturbance. Sample plots were established in Slitere Reserve (now National park) in north-western Latvia on areas affected by large fire in 1992. Data were collected in 1993, 2002 and 2017. The aim of the study was to characterize the regeneration and succession of ground vegetation after the fire. In 1993, species such as bog-rosemary (Andromeda polifolia), heather (Calluna vulgaris) and cloudberry (Rubus chamaemorus) were observed in the ground vegetation a year after the fire. In 2002 liverworts appeared, indicating that the bog has acquired more stable and wetter conditions, but in 2017, liverwort mosses were no longer present and the percentage cover of Rubus chamaemorus decreased significantly and Calluna vulgaris, sphagnum sp., and Betula pendula were present in large quantities in the bog. Comparing these studied years, it can be concluded that all these years the biotopes and species have continuously developed and are regenerating.

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Section: Introductionmentioning

confidence: 99%

Post fire ground vegetation development over 25 years

Freimane¹,

Čakša²,

Kārkliņa³

et al. 2021

Research for Rural Development

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“…On the base of DCA-ordination analysis -identification of the leading factors of ecological differentiation phytocoenoses. This method is widespread in biology and ecology for quantitative assessment of ecological changes from the geological datasets (Correa-Metrio et al, 2014), studies of vegetation successions (Cao et al, 2019), building of hierarchical syntaxonomic schemes (Çoban & Willner, 2019;Zhou et al, 2019;Willner et al, 2019), identification of the main ecological factors of plant communities' differentiation (Korolyuk et al, 2018;Lashchinskiy et al, 2019), assessment of the impact of the environment on the floristic richness of a phytocoenosis (Jansons et al, 2016;Yousaf et al, 2016;Slezák et al, 2017) and other tasks. Using this method for studying the differentiation of pioneer vegetation in ecological space by the 12 vectors-ecofactors supplements phytosociological researches and allows us to detect ecosystems' conditions by the indicators of biotic components (Didukh, 2012).…”

Section: Introductionmentioning

confidence: 99%

Syntaxonomy and ecological differentiation of the pioneer vegetation of Ukraine. 1. Classes: Cakiletea maritimae, Ammophiletea, Crithmo-Staticetea, Crypsietea aculeatae, Therosalicornietea

et al. 2020

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Pioneer plant communities grow on newly-formed ecotopes of coastal and partially continental areas, on patches that have dried after the surface water flooding. They are affected by sea tides, wind-induced effect, salinity, denudation, accumulation and sharp changes in soil humidity. To these factors are added chemical and biological pollution, as well as anthropogenic pressure. Due to these reasons, such plant communities have a specific floristic composition, structure, functional regime and resilience mechanisms, which are different from coenoses of more stable habitats. On the basis of the analysis of more than 600 phytosociological relevés using TWINSPAN modified algorithm the current state of littoral and halophytic classes of pioneer vegetation in Ukraine has been established and their syntaxonomic structure identified. It has been determined that the level of pioneer phytocoenoses diversity in Ukraine is similar to that of Central Europe. The Cakiletea maritimae class is presented by 1 order, 1 alliance, and 4 associations; Ammophiletea – by 1 order, 1 alliance, and 8 associations; Crithmo-Staticetea – by 1 order, 2 alliances, and 3 associations; Crypsietea aculeatae – by 1 order, 3 alliances, and 4 associations, Therosalicornietea – by 1 order, 2 alliances, and 10 associations. Synoptic tables of vegetation classes are given and nine alliances are briefly characterized. Using DCA-ordination analysis of syntaxa in the association-rank level we identified that the main factors of ecological differentiation are soil humidity and aeration as well as the nitrogen content. For the pioneer plant communities, other significant impact factors are the extremality of environmental conditions, their unevenness and non-equilibrium, in particular, the mechanical action of the sea waves, the dynamic processes of denudation and accumulation, salinity, as well as the variability of damping during the year. This research contributes to the identification of the place of the distinguished syntaxa of Ukrainian pioneer vegetation in the European system.

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“…In recent years, the ecological component of phytocoenoses has become increasingly used as an object of study and in classification proving (Çoban & Willner, 2019;Zhou et al, 2019;Willner et al, 2019), including for the study of vegetation dynamics (Cao et al, 2019), identifying the main ecological factors of plant communities' differentiation (Kuzemko et al, 2016;Korolyuk et al, 2018), assessing the impact of environment on the floristic richness in phytocoenoses (Jansons et al, 2016;Yousaf et al, 2016;Slezák et al, 2017). The method developed by Didukh (2012) for determining the main eco-factors of the distribution of plant communities by 12 gradients completes phytosociological studies of vegetation and allows us to determine the ecosystem state by indicators of their biotic components.…”

Section: Introductionmentioning

confidence: 99%

Syntaxonomy and ecological differentiation of the pioneer vegetation of Ukraine. 2. Helichryso-Crucianelletea maritimae, Festucetea vaginatae, Koelerio-Corynephoretea canescentis classes

et al. 2020

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Pioneer psammophytic vegetation is usually developed on wind-drift sandy substrates such as arenas, spits, beaches, river terraces, and this vegetation occupies significant areas in all three natural zones of Ukraine. The Koelerio-Corynephoretea canescentis class was represented by 13 associations, 3 alliances and 1 order; Festucetea vaginatae class by 22 associations, 2 alliances and 1 order; Helichryso-Crucianelletea maritimae by 10 associations, 4 alliances and 1 order. The results of cluster analysis and synoptic tables of the classes are presented. 9 alliances are briefly described. Leading factors of territorial and ecological differentiation are identified. It was found that the territorial distribution of plant communities is influenced by the character of ecotope mesorelief, soil composition and humus horizon thickness, as well as the degree of eolian processes development. The main factors of their ecological differentiation are soil acidity, salt regime and ombroregime. Based on the results of DCA-ordination of syntaxa within certain vegetation classes, it was found that their distribution is influenced by factors that correlate with the environment-specific conditions. It has emerged that an ecological differentiation of syntaxa within Festucetea vaginatae is determined by the integrated effect of gradients, and soil salinity is leading among them. Temperature regime and climate continentality are leading factors in the distribution of syntaxa within the Koelerio-Corynephoretea canescentis class. The gradients of ombroregime and soil humidity have a significant impact. The distribution of communities of the Helichryso-Crucianelletea maritimae class in the ecological space is determined mainly by factors of variability of damping, ombroregime and climate continentality. The author’s syntaxonomic concept assumes the independence of the studied classes: Koelerio-Corynephoretea canescentis, Helichryso-Crucianelletea maritimae and Festucetea vaginatae, considering that the leading factors of community differentiation of the Festucetea vaginatae and Koelerio-Corynephoretea canescentis classes are the origin (genesis) of sandy substrates, as well as soil acidity. Phytosociological analysis of a large number of relevés of coastal littoral vegetation also provides support for independence of the Helichryso-Crucianelletea maritimae and Ammophiletea classes different floristically and ecologically. A review of the psammophytic vegetation of Ukraine will determine the place of the selected syntaxonomic units in the pan-European system.

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Long-term effect of whole tree biomass harvesting on ground cover vegetation in a dry Scots pine stand

Cited by 8 publications

References 14 publications

Post fire ground vegetation development over 25 years

Post fire ground vegetation development over 25 years

Syntaxonomy and ecological differentiation of the pioneer vegetation of Ukraine. 1. Classes: Cakiletea maritimae, Ammophiletea, Crithmo-Staticetea, Crypsietea aculeatae, Therosalicornietea

Syntaxonomy and ecological differentiation of the pioneer vegetation of Ukraine. 2. Helichryso-Crucianelletea maritimae, Festucetea vaginatae, Koelerio-Corynephoretea canescentis classes

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