Plant community stability, indicator species and their driving factors at a gradient of grazing intensity in an alpine meadow

Ecological Indicators, Journal Year: 2024, Volume and Issue: 162, P. 112012 - 112012

Published: April 12, 2024

On the Tibetan Plateau, most alpine meadows have undergone various degree of degradation due to heavy grazing practices. Assessing progress succession, identify indicator species for different managements is crucial facilitate effective restoration degraded meadows. In this study, specific areas with varying levels intensity were selected assess stability plant communities, each stage, and examine driving factors influencing community stability. The results showed that (i) was found be highest under light moderate grazing. comparison treatment, "cohesion" index (|Negative cohesion|) increased by 54.45% treatment 23.24% treatment. (ii) varied across succession stages played distinct roles. Dominant identified as no whereas rare poisonous served indicators (iii) mechanisms differed throughout gradient intensity. Plant-related primarily influenced grazing, while soil-related began play a joint role This empirical knowledge contributes establishing scientific basis rational utilization management meadow ecosystems.

Language: Английский

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How to enhance Atlantic Forest protection? Dealing with the shortcomings of successional stages classification

Perspectives in Ecology and Conservation, Journal Year: 2024, Volume and Issue: 22(2), P. 101 - 111

Published: April 1, 2024

The Atlantic Forest is a global biodiversity hotspot and significant provider of ecosystem services to 65% the Brazilian population. Due being highly threatened, it protected by federal law 11,428/2006, which establishes forest use restrictions based on native vegetation successional stages in Forest, with more advanced receiving protection. classification parameters are established at state level. However, employed classify fragments different subjective imprecise, negatively impacting environmental permitting related offset policies. Here, we critically assessed major limitations applying 11,428/2006 presented alternatives for establishing transparent, applicable, legally safe, effective protocol identifying conservation value fragments. We also highlight problems sampling, indicators, methodologies present guidelines revising associated state-level resolutions. suggest an inclusive two-step analysis structure, cover history, biodiversity, (social), landscape indicators. By employing technological approach transferring part assessment responsibility agencies instead allowing self-declared reports landowners, our proposal focuses potential evaluating ecological integrity among classes types. As nearly 90% remaining located within private lands, improving this legal instrument essential protecting vulnerable unique threatened biome.

Language: Английский

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Does the universal adaptive strategy theory apply to natural regeneration in heterogeneous subtropical karst forests?

Ecological Indicators, Journal Year: 2024, Volume and Issue: 165, P. 112168 - 112168

Published: May 29, 2024

The universal adaptive strategy theory (UAST) describes how the ecological of plants changes along succession after disturbance. However, whether it applies to those off-peak successional pathways in extremely heterogeneous forests is uncertain. This study established a series forest dynamic plots natural regeneration subtropical karst forests, and aimed verify UAST applied forests. By measuring dominant plant functional traits (PFTs) quantifying spectrum, we found that PFTs varied significantly regeneration, as did strategies. Further results showed C- S-strategy dominated community-level spectrum. In addition, C-strategy gradually increased while exhibited decreasing trend. community spatial structure abiotic factors including soil physicochemical properties topographic jointly drove spectrum community, with playing more important role. provided clear evidence support Grime's CSR UAST, which emphasized stress conditions supported plants, would dominate relative fertile conditions.

Language: Английский

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Tropical forest succession increases tree taxonomic and functional richness but decreases evenness

Global Ecology and Biogeography, Journal Year: 2024, Volume and Issue: 33(8)

Published: June 8, 2024

Abstract Aim Successional changes in functional diversity provide insights into community assembly by indicating how species are filtered local communities based on their traits. Here, we assess successional taxonomic and richness, evenness redundancy along gradients of climate, soil pH forest cover. Location Neotropics. Time period Last 0–100 years. Major taxa studied Trees. Methods We used 22 chronosequence studies 676 plots across the Neotropics to analyse Hill's trees, these vary with continental‐scale precipitation, surrounding Results Taxonomic richness increased, while decreased over time. Functional changed strongly when not accounting for but more weakly after statistically that largely driven richness. Nevertheless, increases correcting may indicate environmental heterogeneity limiting similarity increase during succession. The taxonomically‐independent decreases stronger filtering competition select dominant similar trait values, many rare traits added community. Such also lead increased redundancy. varied resource availability were harsh, resource‐poor environments, weak benign, productive environments. Hence, facilitation important, whereas weaker abiotic allows high initial changes. Main conclusion found succession, mainly caused increasing number due arrival new changing (a)biotic filters.

Language: Английский

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Different threshold responses in spontaneously changing postagrogenic forest and unmanaged grassland. Shifts in small mammal populations and communities triggered by an extraordinary drought

Environmental Monitoring and Assessment, Journal Year: 2025, Volume and Issue: 197(3)

Published: Feb. 4, 2025

Language: Английский

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Primary Mid-Succession Carbon Fluxes in a Spontaneously Recovering Post-Mining Ecosystem

Atmosphere, Journal Year: 2025, Volume and Issue: 16(2), P. 176 - 176

Published: Feb. 5, 2025

Limited research exists on the carbon sequestration potential of spontaneously developing post-coal-mining sites in mid-stage primary succession. Therefore, 2023, net ecosystem exchange (NEE) was quantified Czechia using an eddy covariance (EC) tower to assess fluxes a dominated by pioneer tree species such as willow, along with aspen and birch, growing wave-like microtopography. The functioned strong sink, annual NEE −415 g C m−2 yr−1, ~39 years after coal mining. This derived gross (GEE) −1423 yr−1 respiration (Reco) 1008 yr−1. Seasonal variation driven higher GEE summer rather than Reco. Consequently, Reco accounted for ca. 51% summer, compared 56% spring. In addition, temperature important climatic factor spring, whereas vapor pressure deficit (VPD) global radiation (Rg) were more critical summer. Overall, our results highlight robust capacity naturally forests, suggesting their role restoring mined areas Central Europe other regions without water limitations following

Language: Английский

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Carbon Absorption Potential of Abandoned Rice Paddy Fields in Korea

Sustainability, Journal Year: 2025, Volume and Issue: 17(5), P. 2054 - 2054

Published: Feb. 27, 2025

Over time, the vegetation of abandoned rice paddy fields is succeeded by communities willow (Salix pierotii Miq.). This study was carried out to confirm potential for future carbon farming evaluating absorption capacity restored passively in fields. The net primary productivity (NPP) established three areas central Korea (Cheongju, Andong, and Buyeo) determined. NPP obtained combining diameter growth individuals density stands, yielding 24.36, 19.74, 38.69 tons·ha−1·yr−1, respectively, average sites 27.62 tons·ha−1·yr−1. carbon-based calculated from at 13.81 tons·C·ha−1·yr−1, amount heterotrophic respiration, which respiration microorganisms animals soil, measured Cheongju 5.25 tons·C·ha−1·yr−1. As a result, ecosystem production (NEP) as 8.56 By substituting this NEP value into area so far, dioxide estimated exceed 19 million·tons·yr−1. high enough account 77% total forecasted 2050, year aims achieve neutrality. In regard, using evaluated promising project.

Language: Английский

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Soil is alive – how does soil biota influence soil mechanical properties? A perspective review

Biogeotechnics, Journal Year: 2025, Volume and Issue: unknown, P. 100175 - 100175

Published: March 1, 2025

Language: Английский

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Species Rarity and Topography Determine the Plant Functional Structure Along the Successional Pathway in Heterogeneous Degraded Karst Forests

Land Degradation and Development, Journal Year: 2025, Volume and Issue: unknown

Published: March 3, 2025

ABSTRACT Understanding the dynamics of plant functional community structure along successional pathway is crucial for natural resource conservation and environmental management, especially in those specially degraded ecosystems. This study established forest dynamic plots karst forests to measure six traits: specific leaf area, dry matter content, thickness, carbon nitrogen phosphorus content. By implementing Grime's CSR strategy employing a ternary diversity diagram framework, variations ecological strategies were quantified. The results showed that plants with competitive increased succession, while S‐strategy decreased. declined from early‐ mid‐successional stages, followed by an increase late‐successional stage, corresponding inverse trend redundancy. Furthermore, there was decrease species dominance which contributed trade‐off between topographic roughness soil pH value main abiotic factors determining variation among stages. Species rarity positively impacted but negatively affected redundancy, highlighting role rare maintaining ecosystem functionality emphasizing vulnerability ecosystems changes. provides valuable insights into mechanisms forests, thereby facilitating development effective management.

Language: Английский

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Recuperación de la masa de mantillo con plantaciones de restauración en el bosque tropical estacionalmente seco

Botanical Sciences, Journal Year: 2025, Volume and Issue: 103(2)

Published: March 14, 2025

Background: Forest mulch is the habitat of decomposer organisms and protects soil from erosion. In seasonally dry tropical forest, this organic layer lost due to elimination vegetation cover resulting agricultural activities but could be recovered through restoration intervention. Prediction: The seasonality rainfall, composition species richness plantings recruitment in areas under explain accumulation mass. Study site dates: Four-year-old forest Quilamula, Sierra de Huautla, Morelos. Methods: Four samplings natural succession seven planting combinations that include between three 12 (six legumes six non-legumes). Results: Including succession, average mass was 6.5 Mg/ha. As expected, greater compared middle season what recorded at end rainy season. Furthermore, positively related number planted highest where lowest exotic grass Andropogon gayanus recorded. Conclusions: Restoration favor recovery litter by increasing its with planted, while invasion grasses reduces it.

Language: Английский

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