Types and rates of decomposition of Larix sibirica trees and logs in a mixed European boreal old-growth forest

Shorohova, Ekaterina; Kapitsa, Ekaterina; Руоколайнен, Анна Владимировна; Romashkin, Ivan; Казарцев, И. А.

doi:10.1016/j.foreco.2019.03.007

Cited by 5 publications

(3 citation statements)

References 29 publications

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“…The tree species dominating in the studied subarctic region is Siberian larch, and the main undergrowth is mountain green alder [ 2 ]. Decomposition rates of Larix wood are important ecological factors for ecosystem development and changes in subarctic regions [ 47 ]. The study area almost represents the western border of the “Siberian” range of these two tree species.…”

Section: Discussionmentioning

confidence: 99%

Relationship between Species Richness, Biomass and Structure of Vegetation and Mycobiota along an Altitudinal Transect in the Polar Urals

Shiryaev

Peintner

Elsakov

et al. 2020

JoF

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Aboveground species richness patterns of vascular plants, aphyllophoroid macrofungi, bryophytes and lichens were compared along an altitudinal gradient (80–310 m a.s.l.) on the Slantsevaya mountain at the eastern macroslope of the Polar Urals (Russia). Five altitudinal levels were included in the study: (1) Northern boreal forest with larch-spruce in the Sob’ river valley habitats; (2–3) two levels of closed, northern boreal, larch-dominated forests on the slopes; (4) crook-stemmed forest; (5) tundra habitats above the timberline. Vascular plant or bryophyte species richness was not affected by altitudinal levels, but lichen species richness significantly increased from the river valley to the tundra. For aphyllophoroid macrofungi, species richness was highest at intermediate and low altitudes, and poorest in the tundra. These results indicate a positive ecotone effect on aphyllophoroid fungal species richness. The species richness of aphyllophoroid fungi as a whole was neither correlated to mortmass stocks, nor to species richness of vascular plants, but individual ecological or morphological groups depended on these parameters. Poroid fungal species richness was positively correlated to tree age, wood biomass and crown density, and therefore peaked in the middle of the slope and at the foot of the mountain. In contrast, clavarioid fungal species richness was negatively related to woody bio- and mortmass, and therefore peaked in the tundra. This altitudinal level was characterized by high biomass proportions of lichens and mosses, and by high litter mortmass. The proportion of corticoid fungi increased with altitude, reaching its maximum at the timberline. Results from the different methods used in this work were concordant, and showed significant patterns. Tundra communities differ significantly from the forest communities, as is also confirmed by nonmetric multidimensional scaling (NMDS) analyses based on the spectrum of morphological and ecological groups of aphyllophoroid fungi.

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Section: Discussionmentioning

confidence: 99%

Relationship between Species Richness, Biomass and Structure of Vegetation and Mycobiota along an Altitudinal Transect in the Polar Urals

Shiryaev

Peintner

Elsakov

et al. 2020

JoF

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“…Red soils, which are rich in Fe, have high Fe content that is difficult to leach. The content of Fe in the soil is usually higher than that in roots, and there is an exchange of elements between CWD and the soil [41][42][43][44]. Therefore, the apparent accumulation of Fe stocks in coarse roots may be due to the entry of soil Fe into these roots.…”

Section: Nutrient Element Stocks In Stump-root Systemsmentioning

confidence: 99%

Nutrient Element Stocks and Dynamic Changes in Stump–Root Systems of Eucalyptus urophylla × E. grandis

Xie,

Liang,

Liu

et al. 2023

Forests

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Stump–root systems consist of aboveground stumps and underground coarse roots after timber harvesting. Stump–root systems are the primary source of coarse woody debris (CWD) in plantations, and they play a crucial role in the material cycle, energy flow, and biodiversity of Eucalyptus plantation ecosystems. However, there is limited knowledge about the changes in elemental stock within this CWD type during decomposition. To address this gap, we conducted a study on Eucalyptus urophylla × E. grandis stump–root systems at various times (0, 1, 2, 3, 4, 5, and 6 years) after clearcutting. Our aim was to investigate the stock changes in eight elements (K, Ca, Mg, S, Fe, Mn, Cu, and Zn) within the stumps and coarse roots over time and their decay levels, and we analyzed the relationship between elemental stocks and the physical, chemical, and structural components of stump–root systems. Our findings revealed the following: (1) The majority of each element’s stock within the stump–root system was found in the coarse roots. The elemental stocks in both stumps and coarse roots decreased as time passed after clearcutting and as decay progressed. (2) Notably, the elemental stocks in stumps and coarse roots were significantly higher than in other treatments during the initial 0–2 years after clearcutting and at decay classes I and II. In terms of elemental stocks, stumps from all clearcutting times or decay classes had the highest K stock, followed by Ca and Fe. Mg, Mn, and S stocks were lower than the first three, while Zn and Cu stocks were very low. The ordering of elemental stocks from high to low in the stump–root systems generally aligned with that of the coarse roots. (3) The residual rates of K, Mg, and Mn stocks in the stump–root systems fit the negative exponential model well. It took approximately 1 to 3.5 years for a 50% loss of the initial stocks of these elements and 5 to 10 years for a 95% loss. (4) The large amount of biomass in the stump–root system is the long-term nutrient reservoir of plantations, and any factor related to biomass loss affects the magnitude and duration of the nutrient reservoir, such as N, P, stoichiometric ratios, density, water-holding capacity, and hemicellulose. These findings contribute to a better understanding of the nutrient elemental dynamics and ecological functions of stump–root systems in Eucalyptus plantations.

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“…В. В. Дьяконов и С. С. Зябченко ОБЗОР ные на оценку роли КДО в лесных экосистемах, в том числе и в углеродном балансе среднетаежных еловых лесов Карелии. В рамках проектов «Процессы фрагментации и разложения древеснои� коры: биотические и абиотические факторы» и «Роль крупных древесных остатков в круговороте биогенных элементов в старовозрастных таежных лесах» была разработана методика оценки скорости разложения коры и древесины, что позволило выявить и количественно оценить факторы биотиче-скои� и абиотическои� регуляции скорости разложения валежа(Shorohova et al, 2016(Shorohova et al, , 2019(Shorohova et al, , 2020 Капица и др., 2019;Шорохова, 2020).Проведены исследования пространственно-временнои� изменчивости интенсивности выделения СО 2 в процессе микробного дыхания КДО, разработаны и апробированы методические подходы, позволяющие оценить интенсивность эмиссии СО 2 при разложении валежа с учетом вклада коры и древесины в зависимости от их физико-химических характеристик и факторов внешнеи� среды (Mamai et al, 2018; Shorohova et al, 2020). Разработаны модели динамики углерода и других биогенных элементов в коре и древесине валежа разнои� степени разложения, а также оценен вклад этих компонентов ствола в общие пулы элементов в масштабах биогеоценоза (Ромашкин, 2021; Romashkin et al, 2021).…”

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History of Research on Forest Produtivity in Karelia

Moshnikov,

Kryshen,

Romashkin

2023

FSI

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The article deals with the history of research on the biological productivity of forests in Republic of Karelia as a methodological basis for the modern field of research into the components of carbon balance in forests. Particular attention is paid to the review of the studies of the researchers of the Forest Institute of the Karelian Research Center of the Russian Academy of Sciences from the moment of its formation to the present. The studies of the structure and stocks of phytomass, organic matter and carbon in different components of forest ecosystems, as well as biological aspects of the productivity of the republic’s forests are considered. Some results and prospects of studying the carbon balance in the forests of Eastern Fennoscandia at the current stage of the Institute’s activities are discussed. The references list the main studies in this research field.

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Types and rates of decomposition of Larix sibirica trees and logs in a mixed European boreal old-growth forest

Cited by 5 publications

References 29 publications

Relationship between Species Richness, Biomass and Structure of Vegetation and Mycobiota along an Altitudinal Transect in the Polar Urals

Relationship between Species Richness, Biomass and Structure of Vegetation and Mycobiota along an Altitudinal Transect in the Polar Urals

Nutrient Element Stocks and Dynamic Changes in Stump–Root Systems of Eucalyptus urophylla × E. grandis

History of Research on Forest Produtivity in Karelia

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