Differences in canopy and understorey diversities after the eruptions of Mount Usu, northern Japan — Impacts of early forest management

Végh, Lea; Tsuyuzaki, Shiro

doi:10.1016/j.foreco.2022.120106

Cited by 4 publications

(4 citation statements)

References 57 publications

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“…As the canopy closes, they may be replaced by more shade-tolerant species due to light restriction; an indicator species change confirmed this phenomenon under RP (Table 7). Végh and Tsuyuzaki [97] held that stand spatial structure is more important than stand age, and passive restoration often leads to poor communities. Since the light environment under the stand changes with canopy closure, it is valid to consider that the emergence of various shade-tolerant climbing species, here referred to as woody vines (e.g., A. cochinchinensis and W. sinensis) and voluble herbs (e.g., Ipomoea nil (Linnaeus) Roth), as indicators in the later stage of RP restoration is a potential risk hindering healthy plantation development [98].…”

Section: Communities Stability and Stand Management Strategymentioning

confidence: 99%

Developmental Dynamics and Driving Factors of Understory Vegetation: A Case Study of Three Typical Plantations in the Loess Plateau of China

Zhang,

Jiao,

Zha

et al. 2023

Forests

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Understory vegetation is one of the most important links for improving forest biodiversity, and its restoration is conducive to sustainable forest development, energy flow, and nutrient cycling. However, little is known about the developmental dynamics and main driving factors of the long-time series coverage, biomass, diversity, and species composition of plantation understory vegetation. In a case study of three typical plantations, with a natural secondary forest as reference in the Loess Plateau of China, we collected understory vegetation from a Robinia pseudoacacia Linn. deciduous broad-leaved plantation, Pinus tabulaeformis Carr. evergreen coniferous plantation, and mixed plantation with an age span of 10 to 50 years. (1) The understory plantation coverage and biomass results of stands with different ages showed the R. pseudoacacia plantation to be significantly higher than the P. tabulaeformis plantation, and the species diversity of the P. tabulaeformis plantation changed the most with the stand age. However, the growth resource imbalance, and drastic changes in the stands’ environment caused by excessive intraspecific competition in the early stage of the P. tabulaeformis plantation vegetation restoration, are the main reasons that make the species diversity of undergrowth vegetation of P. tabulaeformis plantation lower than that of other stand types. (2) The understory species composition of the plantations revealed their degree of community stability. Compared to the R. pseudoacacia plantation and P. tabulaeformis plantation, the mixed plantation had higher stability, and its species composition closely resembled a natural secondary forest. The community stability of the P. tabulaeformis plantation was the lowest because it had the lowest coverage, biomass, and species diversity of understory vegetation. However, the understory species composition of the three plantation types converged, which was due to atypical species contribution. (3) The dynamic changes of canopy and soil nutrients were the main driving factors affecting the R. pseudoacacia plantation understory vegetation species composition. Stand density and elevation limited the understory vegetation communities of P. tabulaeformis plantation restoration. Soil bulk density is the key factor affecting understory vegetation in mixed plantations, and this effect weakens with the stand age. In future studies, the focus should be on the converged action and further development trend of atypical species, choosing an appropriate recovery strategy (active or passive), and providing more possibilities for the intensive management of vegetation under different plantations.

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Section: Communities Stability and Stand Management Strategymentioning

confidence: 99%

Developmental Dynamics and Driving Factors of Understory Vegetation: A Case Study of Three Typical Plantations in the Loess Plateau of China

Zhang,

Jiao,

Zha

et al. 2023

Forests

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“…Extreme volcanic eruptions, alongside the creation of new lava fields and massive landslide events, can result in the complete removal of all biotic material from a landscape and thus are an example of true primary succession [77][78][79][80]. During the eruption of Mount St. Helens (Lawetlat'la in the Cowlitz language; Washington State, USA) in 1980, all three of these disturbance types occurred simultaneously, and their interaction transformed vast areas by incinerating pre-existing forests and depositing up to 100 m of mostly inert material onto the landscape.…”

Section: Introductionmentioning

confidence: 99%

Spatial Habitat Structure Assembles Willow-Dependent Communities across the Primary Successional Watersheds of Mount St. Helens, USA

Minsavage-Davis

Garthwaite

Fisher

et al. 2023

Forests

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The eruption of Mount St. Helens in 1980 resulted in a cataclysmic restructuring of its surrounding landscapes. The Pumice Plain is one of these landscapes, where tree species such as Sitka willow (Salix sitchensis) and their dependent communities have been established along newly-formed streams. Thus, the study of these dependent communities provides a unique and rare opportunity to investigate factors influencing metacommunity assembly during true primary succession. We analyzed the influence of landscape connectivity on metacommunity assembly through a novel application of circuit theory, alongside the effects of other factors such as stream locations, willow leaf chemistry, and leaf area. We found that landscape connectivity structures community composition on willows across the Pumice Plain, where the least connected willows favored active flyers such as the western tent caterpillar (Malacosoma fragilis) or the Pacific willow leaf beetle (Pyrrhalta decora carbo). We also found that multiple levels of spatial habitat structure linked via landscape connectivity can predict the presence of organisms lacking high rates of dispersal, such as the invasive stem-boring poplar weevil (Cryptorhynchus lapathi). This is critical for management as we show that the maintenance of a heterogeneous mixture of landscape connectivity and resource locations can facilitate metacommunity dynamics to promote ecosystem function and mitigate the influences of invasive species.

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“…Globally, more than 1,300 volcanoes are known or thought to have erupted in the Holocene, and in the modern period around 80 eruptions a year are recorded 7 . While there have been many studies of the impacts of volcanism on vegetation dynamics, these have focused on the aftermath of a small number of eruptions, spanning relatively short timescales of decades, including Krakatau 1883 8 , Mount Usu 1910 9 , Surtsey 1963 10 and Mount St Helens 1980 11 . Studies concerning more ancient eruptions have tended to report paleobotanical inventories intended to characterize the contemporary ecologies and eruption season (e.g., Laacher See; ref.…”

Section: Introductionmentioning

confidence: 99%

Enduring effects of the ‘Millennium Eruption’ of Changbaishan on mountain vegetation composition

Du,

Oppenheimer,

Büntgen

et al. 2023

Preprint

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Large explosive volcanic eruptions can cover wide areas of land with tephra, profoundly disturbing ecological and societal systems. However, while consequences of tephra fallout and flow deposits have been well studied on annual to decadal timescale, little is known about centennial and longer-term changes in vegetation composition. Here, we reconstruct the pre-eruption vegetation and local climatic conditions on Changbaishan (aka Mt. Paektu) volcano from relict trees recovered from the deposits of its colossal 946 CE ‘Millennium Eruption’. A comparison of forest composition and structure deduced from the subfossil material with today’s forests on the mountain reveals still ongoing impacts more than thousand years after the eruption occurred. Today’s higher abundance of broad-leaved species reflects the long-term vegetation recovery following the eruption rather than the effects of anthropogenic warming that have been suggested previously. Further ecological succession, accelerated by global warming, is likely to reduce or eliminate the alpine tundra now prevalent on the upper slopes of Changbaishan. Our study emphasizes the value of assessing post-volcanic vegetation responses in a long temporal context.

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Differences in canopy and understorey diversities after the eruptions of Mount Usu, northern Japan — Impacts of early forest management

Cited by 4 publications

References 57 publications

Developmental Dynamics and Driving Factors of Understory Vegetation: A Case Study of Three Typical Plantations in the Loess Plateau of China

Developmental Dynamics and Driving Factors of Understory Vegetation: A Case Study of Three Typical Plantations in the Loess Plateau of China

Spatial Habitat Structure Assembles Willow-Dependent Communities across the Primary Successional Watersheds of Mount St. Helens, USA

Enduring effects of the ‘Millennium Eruption’ of Changbaishan on mountain vegetation composition

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