Anthropogenic disturbance mediates soil water effect on diversity-productivity relationships in a temperate forest region

Lin, Senxuan; Fan, Chunyu; Zhang, Chunyu; Zhao, Xiuhai; Gadow, Klaus von

doi:10.1016/j.foreco.2022.120544

Cited by 5 publications

(14 citation statements)

References 67 publications

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Section: Discussionmentioning

confidence: 99%

“…Three bioclimatic variables—temperature seasonality (TS), precipitation seasonality (PS) and precipitation of the driest quarter (PDR) were extracted from the World Climate Dataset (Fick & Hijmans, 2017) with a 1 km 2 spatial resolution. The chronic human disturbance indicator was quantified as the human footprint index which has been considered to be an important driver of anthropogenic disturbance (Lin et al, 2022; Luo et al, 2020). The human footprint (H) was extracted from the Human Footprint database (Venter et al, 2016) with a 1 km 2 spatial resolution.…”

Section: Methodsmentioning

confidence: 99%

“…β 1 indicates how the diversity effects on spatial stability varied across the stress gradients. Noninformative priors were assigned to all parameters (Hakkenberg et al, 2020; Lin et al, 2022). We estimated the model parameters using Markov Chain Monte Carlo (MCMC) approach and assessed parameter convergence using Gelman and Rubin's convergence diagnostics after 10,000 iterations from four Markov chains using the brms package (Hakkenberg et al, 2020).…”

Section: Methodsmentioning

confidence: 99%

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Environmental filtering drives biodiversity–spatial stability relationships in a large temperate forest region

et al. 2023

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The assumption that greater biodiversity enhances ecosystem stability, commonly known as ‘portfolio effect’, has attracted considerable research attention. However, the potential portfolio effects on spatial stability (the similarity of ecosystem functioning among forest communities) are still poorly examined especially at different spatial scales and under varying environmental stress conditions. Accordingly, this study investigates the biodiversity–spatial stability relationship among regional communities across different spatial scales and environmental conditions in a temperate forest region. We define spatial stability as the invariability of the productivity of woody plants among plots within a regional community. To test spatial stability, the N closest plots to a given plot were aggregated to form regional communities representing different spatial scales. Structural equation modelling was used to evaluate how biodiversity (including taxonomic [TD] and phylogenetic diversity [PD]) increases spatial stability via species asynchrony and/or population stability across spatial scales. Hierarchical Bayesian modelling was used to evaluate the environmental dependence of the portfolio effects on spatial stability. TD and PD both increased the spatial stability by increasing asynchrony, but decreased population stability. The portfolio effect of TD on spatial stability became stronger and reached saturation at the intermediate scale and then decreased as regional communities became larger. The portfolio effects of TD were weaker under the stressful conditions of drought, high precipitation seasonality and high elevation but unchanged across temperature seasonality and human disturbance. PD showed no discernable effect on spatial stability and did not change across spatial scale and environmental condition. Our results suggest that the positive effect of biodiversity on species asynchrony overcomes the negative biodiversity effect on population stability to buffer the spatial change in productivity in diverse communities. Future research of the biodiversity–spatial stability relationship may thus benefit from incorporating different spatial scales and environmental conditions into the analysis. Read the free Plain Language Summary for this article on the Journal blog.

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Environmental filtering drives biodiversity–spatial stability relationships in a large temperate forest region

et al. 2023

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“…The temperate forests of northeastern China account for 37% of the total national forest area and nearly 28% of the total carbon stock of all the forest ecosystems in China (Huang et al, 2019). These forests have been through a long history of chronic anthropogenic disturbance, including frequent and continuous grazing and extraction of firewood and non-timber forest products (Lin et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

“…grazing and extraction of firewood and non‐timber forest products) may pose a long‐term threat to ecosystem services, especially in areas with dense, forest‐dependent human populations (Ribeiro et al., 2015; Singh, 1998). This seems to be particularly true in temperate forests in the most densely populated regions of the world, which are experiencing increasing levels of habitat degradation due to subtle but pervasive chronic disturbances (Lin et al., 2022). Biodiversity plays a crucial role in exerting a substantial positive effect on ecosystem functioning of temperate forests, in addition to stand structure and climate (Paquette & Messier, 2010; Qiao et al., 2021; Ruiz‐Benito et al., 2013).…”

Section: Introductionmentioning

confidence: 99%

Chronic anthropogenic disturbance mediates the biodiversity‐productivity relationship across stand ages in a large temperate forest region

Lin,

Fan,

Wang

et al. 2024

Journal of Applied Ecology

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Temperate forests, especially those in the densely populated regions of the world, are experiencing increasing levels of habitat degradation and biological impoverishment due to subtle but pervasive chronic anthropogenic disturbances including frequent and continuous grazing and extraction of non‐timber forest products. However, the effects of these subtle, chronic disturbances on the biodiversity‐productivity relationship have rarely been examined especially in forests at different development stages. Accordingly, this study explores how chronic anthropogenic disturbance affects the relationship between tree species diversity and forest productivity at different stand development stages in a large temperate forest region. We used the human footprint index as a proxy for chronic human disturbance. Hierarchical Bayesian models were employed to assess the effects of chronic human disturbance on the relationship between tree diversity and forest productivity across different stand age. Several measures of diversity were employed, including taxonomic, functional and phylogenetic diversity. Forest productivity consistently increased with taxonomic, functional and phylogenetic biodiversity; these biodiversity facets were the main drivers of forest productivity compared to stand age, chronic human disturbance and climate. However, the magnitude at which productivity increases with the increments of taxonomic and functional diversity diminishes with the increasing chronic disturbance, especially in younger stands. The effects of phylogenetic diversity on productivity did not vary with chronic disturbance, regardless of stand age. Synthesis and applications: Chronic human disturbance in a large temperate forest region reduces the increase in community productivity due to different facets of biodiversity, especially in young forests. The evidence suggests that the mitigation of chronic human disturbance and the conservation of biodiversity will be effective in sustaining essential ecosystem functions.

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Resource availability enhances positive tree functional diversity effects on carbon and nitrogen accrual in natural forests

Chen,

Reich,

Taylor

et al. 2024

Nat Commun

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Forests harbor extensive biodiversity and act as a strong global carbon and nitrogen sink. Although enhancing tree diversity has been shown to mitigate climate change by sequestering more carbon and nitrogen in biomass and soils in manipulative experiments, it is still unknown how varying environmental gradients, such as gradients in resource availability, mediate the effects of tree diversity on carbon and nitrogen accrual in natural forests. Here, we use Canada’s National Forest Inventory data to explore how the relationships between tree diversity and the accumulation of carbon and nitrogen in tree biomass and soils vary with resource availability and environmental stressors in natural forests. We find that the positive relationship between tree functional diversity (rather than species richness) and the accumulation of carbon in tree biomass strengthens with increasing light and soil nutrient availability. Moreover, the positive relationship between tree functional diversity and the accumulation of carbon and nitrogen in both organic and mineral soil horizons is more pronounced at sites with greater water and nutrient availabilities. Our results highlight that conserving and promoting functionally diverse forests in resource-rich environments could play a greater role than in resource-poor environments in enhancing carbon and nitrogen sequestration in Canada’s forests.

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Anthropogenic disturbance mediates soil water effect on diversity-productivity relationships in a temperate forest region

Cited by 5 publications

References 67 publications

Environmental filtering drives biodiversity–spatial stability relationships in a large temperate forest region

Environmental filtering drives biodiversity–spatial stability relationships in a large temperate forest region

Chronic anthropogenic disturbance mediates the biodiversity‐productivity relationship across stand ages in a large temperate forest region

Resource availability enhances positive tree functional diversity effects on carbon and nitrogen accrual in natural forests

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