Role of bryophytes in renaturalization of the devastated areas of Nemyriv sulfur deposit (Lviv Region)

Shcherbachenko, O. I.; Rabyk, O.I.; Lobachevska, О.V.

doi:10.15407/ukrbotj72.06.596

Cited by 3 publications

(2 citation statements)

References 4 publications

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“…Due to their high tolerance to the effect of ecological change, bryophytes play an important role in succession processes on devastated territories where other plants cannot initially grow (Lobachevska et al, 2005;Glime, 2006;Maestre et al, 2015). By inhabiting such disturbed territories, pioneer moss turfs form a new succession with changes in humidity (Shcherbachenko et al, 2015;Rabyk et al, 2017), mineral (Vilmundardóttir et al, 2018) and organic status of the substrate (Karpinets et al, 2016;Kyyak & Baik, 2016;Karpinets et al, 2017). The participation of bryophytes in the revitalization of plant cover of technogenic ecosystems is determined by their high tolerance to drying (Kyyak & Khorkavtsiv, 2015;Kyyak et al, 2017;, their ability to restore soil due to the structuring of its upper horizons (Carter & Arocena, 2000;Aronson & Alexander, 2013;Jackson, 2015), to prevent its erosion (Haig, 2016;Baughman et al, 2017;Stark, 2017), to absorb and retain moisture (Seitz et al, 2017;Batista et al, 2018;Delgado-Baquerizo et al, 2018), thereby reducing surface runoff (Greenwood & Stark, 2014;Zhao et al, 2014;García et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Ecological and physiological peculiarities of bryophytes on a post-technogenic salinized territory

2019

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Taxonomic, biomorphological and ecological structures of bryophytes, their reproductive strategy and the main mechanisms of tolerance in the conditions of salinization were investigated. Bryophytes are the pioneers that have colonized the territory of a tailing storage that holds liquid waste from potassium-magnesium concentrate production of the Mining and Chemical Enterprise "Polymineral". Due to excess salts, the soil solution in the shore area of the tailing pond acquires high osmotic pressure. Three experimental plots which differed significantly in the level of the substrate salinity were laid at the distance of 3, 6 and 9 m from the reservoir for experimental studies. Water extracts of the substrates from the test sites showed the highest concentrations for sulfates – 10.4–64.6 mg Eq/100 g of soil and chlorides – 7.6–43.3 mg Eq/100 g of soil. It was established that the investigated areas of the tailing storage territory differed in the biochemical activity of the substrate, which was evaluated by its redox potential. On the areas of the uncovered substrate it was the lowest – 230 mV, which indicates anaerobiosis in conditions of very high salinization and moisture. Higher ROP values were determined at the sites of bryophyte cover distribution – 295–330 mV. The aim of the study was to determine the features of taxonomic, biomorphological and ecological structures of bryophytes, their reproductive strategy and to establish the main mechanisms of adaptation to the conditions of salinization on the tailing storage territory. 24 species and 3 varieties of bryophytes, belonging to 12 families and 16 genera were found on the shore of the tailing storage pond. The results of biomorphological and ecological analysis of bryophytes indicate the uneven conditions of the habitats and their considerable ecological plasticity. Among the bryophytes, mesophytes, xeromesophytes and meso-eutrophs, eutrophs with a life-form of low dense and loose turf dominated. In salinization conditions, dioicous acrocarpous mosses prevailed, the fertile turf of which, depending on the influence of abiotic factors, differed significantly in the number of sexual shoots, their ratio and productivity. Bulbils were found only on the tips of Bryum argenteum shoots. Along with Salicornia europaea L., a euhalophyte, the leading role in the initial stage of overgrowth of the tailing storage area most often belonged to Didymodon rigidulus, Bryum argenteum, Funaria hygrometrica and Barbula unguiculata. The process of formation of bryophyte cover occurred along a gradient of decrease in salt concentration at the experimental sites. Adaptation of bryophytes to substrate salinity is due to a change in metabolic processes, which is manifested in an increase of the total content of carbohydrates and an increase of the cation exchange capacity of moss cell walls, which is the primary barrier that reduces the toxic effect of ions under salt stress.

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Section: Introductionmentioning

confidence: 99%

Ecological and physiological peculiarities of bryophytes on a post-technogenic salinized territory

2019

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“…The main problem in cultivating dump rocks is their hostility to biota and sometimes their toxicity. Bryophytes were among the first to settle on the dump substrates and formed a thick, multispecific overgrowth (Shcherbachenko et al, 2015;Rabyk et al, 2017). The investigations of sexual and vegetative reproduction of monoecia and dioecia are important aspects for explaining the peculiarities of reproductive strategy of moss (Szövényi et al, 2009;McDaniel & Perroud, 2012;Bisang et al, 2014;Barrett, 2015;Bisang et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Bryophytes on the devastated territories of sulphur deposits and their role in restoration of dump substrate

et al. 2018

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Bryophytes possess a wide ecological diapason allowing them to populate substrates of technogenic origins which are scarcely suitable or completely unsuitable for viability of vascular plants. 49 bryophyte species, which belong to 2 divisions, 3 classes, 8 orders, 17 families, and 33 genera have been found on the dump territory of sulphur extraction of the mining-chemical enterprise “Sirka” (Yavoriv district, Lviv region). Seven transects, three on the north slope (base, slope, top), three on the south slope and one on the plateau were laid for sample selections. 20 investigated 0.5 × 0.5 m plots located 2 m apart were analyzed within each 10 × 10 m transect. Specific composition, life forms, projective cover, biomass of bryophytes, numbers of male, female and sterile plants, moisture content in the turfs, pH and physiological investigation of mosses were determined on each plot. The quantitative analysis of the biomorphological structure allowed us to establish the dependence of the spread of life forms on exposition and slope height; essential variability of the projective cover and moss biomass. Bryophyte cover plays an essential part in optimization of the moisture regime and surface layer temperature of technogenic substrates, improving the conditions of growth localities. We established that on the dump the dominant moss species are dioecious with a high level of reproductive effort (sexual and sexless), with short ontogenesis and age of first reproduction, which provides the chance to produce the maximum number of progeny in the minimum period and to form a complete moss cover. The analysis of seasonal moss photosynthesis dynamics has demonstrated the adaptability of moss photosynthetic apparatus to contrasting climatic conditions and the ability to support the intensity of photosynthetic processes on a rather stable level during the vegetative period. Our research showed that bryophytes play an important role in productivity of plant cover on the post-technogenic territories of sulphur extraction. It was found that bryophytes play a role in accumulation of organic carbon and biogenic elements in the substrate of the sulphur extraction dump . Carrying out research of specific composition dynamics and species activity is the precondition for revealing the essence of the dynamic processes taking place in the structure of the bryophyte communities on devastated territories and the influence of these processes on the formation of vegetation on dump complexes.

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Peculiarities of the morpho-physiological reactions of mosses depending on the water-temperature regime of their local growth

Kit,

Shcherbachenko

2023

Proc. SNHM

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The morphological structure of and the activity of the catalase of mosses Ptychostomum imbricatulum and Brachythecium rutabulum depending on microclimatic conditions of their local growth were studied. The morphological variability of moss turfs in different ecological conditions of forest ecosystems was established, in particular, the influence of the level of moisture in local growth on the morphometric parameters of mosses (the density of the turf, the height of the shoots and their foliage and the size of the leaves) was revealed. It is shown that the morphological structure of the turfs of the mosses Ptychostomum imbricatulum and Brachythecium rutabulum is important for moisture conservation and depends on the microclimatic conditions of local growth and the life form of the species. It is shown that the increase in the content of hydrogen peroxide as a signaling mediator is a component of the antioxidant protection system. It was established that the highest content of hydrogen peroxide was in shoots of P. imbricatulum from the territory of pine plantations, where the microclimatic conditions are the least favorable. The obtained results indicate the existence of interdependence between the formation of reactive oxygen species and the activity of catalase as one of the key enzymes of antioxidant protection, which indicates the signaling role of reactive oxygen species in moss cells under stress conditions. The dependence of catalase activity in moss cells on the level of hydration of their turfs was established. The activation of catalase in adverse water and temperature conditions in the shoots of the studied species indicates the participation of the enzyme in the adaptation of plants to stress and is due to the strengthening of free radical oxidation processes, in particular, an increase in the content of hydrogen peroxide.

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Role of bryophytes in renaturalization of the devastated areas of Nemyriv sulfur deposit (Lviv Region)

Cited by 3 publications

References 4 publications

Ecological and physiological peculiarities of bryophytes on a post-technogenic salinized territory

Ecological and physiological peculiarities of bryophytes on a post-technogenic salinized territory

Bryophytes on the devastated territories of sulphur deposits and their role in restoration of dump substrate

Peculiarities of the morpho-physiological reactions of mosses depending on the water-temperature regime of their local growth

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