Long-Term Climate Regime Modulates the Impact of Short-Term Climate Variability on Decomposition in Alpine Grassland Soils

Althuizen, Inge H. J.; Lee, Hanna; Sarneel, Judith M.; Vandvik, Vigdis

doi:10.1007/s10021-018-0241-5

Cited by 22 publications

(16 citation statements)

References 36 publications

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“…It is important to notice, however, that plant community responses to warming are not consistent across Arctic regions and tend to be more pronounced in warmer and moister habitats, while colder and drier habitats seem to be more resilient (Elmendorf et al 2012a). Accurately quantifying the responses of decomposition processes to vegetation 4 changes across different Arctic regions is therefore of particular interest (Cornwell et al 2008;Bradford et al 2016;Althuizen et al 2018).…”

Section: Introductionmentioning

confidence: 99%

Long-term warming manipulations reveal complex decomposition responses across different tundra vegetation types

2022

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In a rapidly warming tundra, ecosystems will undergo major environmental changes which are predicted to significantly alter below–ground processes, such as decomposition of plant litter. Making use of International Tundra Experiment sites (ITEX), established approximately two decades ago, we examined long–term impacts of warming on decomposition. We used the Tea Bag Index (TBI) methodology to measure the annual mass loss (%) of two tea types as a proxy for potential decomposition rates, across five tundra vegetation types. Direct effects of warming were assessed by comparing mass loss within and outside warming manipulations. Indirect effects of warming, such as those caused by warming–induced changes in plant community composition, were assessed through the relationship between mass loss of tea and biotic and abiotic local conditions. We found positive effects of warming on decomposition, although the responses varied between vegetation and tea types. Interestingly, we found support for the indirect influence of long–term warming on decomposition through warming–induced changes in the composition of plant communities. Our findings demonstrate the complexity in decomposition responses to warming across different vegetation types and highlight the importance of long–term legacies of warming in decomposition responses across the Arctic.

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Section: Introductionmentioning

confidence: 99%

Long-term warming manipulations reveal complex decomposition responses across different tundra vegetation types

2022

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“…After collection, adhering soil particles and roots were removed and the tea bags were dried (48 h at 60 °C) and weighed. These data are partially described in 47 , and the full data are provided in 35 and can be downloaded using 28 (see folder R/download_VCG_data).…”

Section: Methodsmentioning

confidence: 99%

The role of plant functional groups mediating climate impacts on carbon and biodiversity of alpine grasslands

et al. 2022

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Plant removal experiments allow assessment of the role of biotic interactions among species or functional groups in community assembly and ecosystem functioning. When replicated along climate gradients, they can assess changes in interactions among species or functional groups with climate. Across twelve sites in the Vestland Climate Grid (VCG) spanning 4 °C in growing season temperature and 2000 mm in mean annual precipitation across boreal and alpine regions of Western Norway, we conducted a fully factorial plant functional group removal experiment (graminoids, forbs, bryophytes). Over six years, we recorded biomass removed, soil microclimate, plant community composition and structure, seedling recruitment, ecosystem carbon fluxes, and reflectance in 384 experimental and control plots. The dataset consists of 5,412 biomass records, 360 species-level biomass records, 1,084,970 soil temperature records, 4,771 soil moisture records, 17,181 plant records covering 206 taxa, 16,656 seedling records, 3,696 ecosystem carbon flux measurements, and 1,244 reflectance measurements. The data can be combined with longer-term climate data and plant population, community, ecosystem, and functional trait data collected within the VCG.

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“…Alpine vegetation is an essential component of terrestrial ecosystems [1]; it can maintain the local climate and improve local economy [2]. Therefore, the degradation and conservation of alpine vegetation is important ecologically, socially, and for sustainable development problems [3].…”

Section: Introductionmentioning

confidence: 99%

Influence of Anthropogenic Activities and Major Natural Factors on Vegetation Changes in Global Alpine Regions

Zhang

Sun

et al. 2022

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Understanding vegetation changes and their driving forces in global alpine areas is critical in the context of climate change. We aimed to reveal the changing trend in global alpine vegetation from 1981 to 2015 using the least squares regression method and Mann-Kendall (MK) test. The area-of-influence dominated by anthropogenic activity and natural factors was determined in an area with significant vegetation change by residual analysis; the primary driving force of vegetation change in the area-of-influence dominated by natural factors was identified using the partial correlation method. The results showed that (1) the vegetation in the global alpine area exhibited a browning trend from 1981 to 2015 on the annual scale; however, a greening trend was observed from May to July on the month scale. (2) The influence of natural factors was greater than that of anthropogenic activities, and the positive impact of natural factors was greater than the negative impact. (3) Among the factors that were often considered as the main natural factors, the contribution of albedo to significant changes in vegetation were greater than that of temperature, precipitation, soil moisture, and sunshine duration. This study provides a scientific basis for the protection of vegetation and sustainable development in alpine regions.

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Long-Term Climate Regime Modulates the Impact of Short-Term Climate Variability on Decomposition in Alpine Grassland Soils

Abstract: Manuscript highlights: x Decomposition increases with temperature and decreases with increased precipitation x Stabilization of labile fraction of litter varies among long-term climate regimes x Long-term climate modulates decomposition through environmental characteristics

Cited by 22 publications

References 36 publications

Long-term warming manipulations reveal complex decomposition responses across different tundra vegetation types

Long-term warming manipulations reveal complex decomposition responses across different tundra vegetation types

The role of plant functional groups mediating climate impacts on carbon and biodiversity of alpine grasslands

Influence of Anthropogenic Activities and Major Natural Factors on Vegetation Changes in Global Alpine Regions

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