Soil communities following clearcut and salvage harvest have different early successional dynamics compared with post-wildfire patterns DOI Creative Commons
Teresita M. Porter, Dave Morris, Emily Smenderovac

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 11, 2024

Abstract Understanding the impacts of harvest and subsequent silviculture practices at stand scales on below-ground biota, their associated nutrient cycling processes, is needed to more fully evaluate sustainable management boreal forest systems. While replacing wildfire primary natural disturbance mechanism in jack pine-dominated systems; clearcut also results renewal so sometimes used silvicultural systems emulate processes. In this study, we simultaneously assessed successional trajectories three major taxa below ground soil community, bacteria, fungi, arthropods using DNA metabarcoding. The objectives study were use a chronosequence framework to: 1) assess whether communities following converge along gradient, 2) when community recovers pre-disturbance, mature, reference condition, 3) effects cumulative succession (i.e., followed by salvage harvesting fire-killed trees). We found that richness (alpha diversity) did not illustrate any clear patterns convergence could, therefore, underestimate recovery times, especially for arthropods. Comparisons underlying composition (beta proved be informative. case, different recovered timelines compared with stand-replacing wildfire. general, bacteria appear first post-wildfire conditions arthropods, however, fungi within time frame chronosequence. This suggests extended periods are required achieve complete fungal pre-disturbance condition. appeared have greater (compounded) effect or harvest. work showcases performance scalable method monitoring diverse arrange biota future work, tracking arthropod may provide insights into longer-term current guidance comparing alternative approaches. Open Research Statement Sequences been deposited NCBI SRA under GRDI-Ecobiomics project accession PRJNA565010 BioSample accessions SAMN26926703 - SAMN26926795 study. MetaWorks v1.9.3 multi-marker metabarcode bioinformatic pipeline available from https://github.com/terrimporter/MetaWorks . ITS classifier based UNITE+INSD full dataset v8.2 trained RDP Classifier ( https://github.com/terrimporter/UNITE_ITSClassifier ). COI v4 https://github.com/terrimporter/CO1Classifier code produce figures, including infile metadata files, will https://github.com/terrimporter/Chronosequence_HarvestType

Language: Английский

Assmann review: spatial ecology of rotational and continuous cover forestry in boreal landscapes DOI
Dan Binkley

European Journal of Forest Research, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 6, 2025

Language: Английский

Citations

0
Spatio-Temporal Heterogeneity of Vegetation Coverage and Its Driving Mechanisms in the Agro-Pastoral Ecotone of Gansu Province: Insights from Multi-Source Remote Sensing and Geodetector DOI Creative Commons

Macao Zhuo,

Jianyu Yuan, Jie Li

et al.

Atmosphere, Journal Year: 2025, Volume and Issue: 16(5), P. 501 - 501

Published: April 26, 2025

The agro-pastoral ecotone of Gansu Province, a critical component the ecological security barrier in northern China, is characterized by pronounced fragility and climatic sensitivity. Investigating vegetation dynamics this region essential for balancing conservation sustainable development. This study integrated MODIS/NDVI remote sensing data (2000–2020), climate, land, anthropogenic factors, employing Sen’s slope analysis, coefficient variation (Cv), Hurst index, geodetector modeling, partial correlation analysis to systematically unravel spatio-temporal evolution driving mechanisms coverage. Key findings revealed following: (1) Vegetation coverage exhibited significant increasing trend (0.05 decade−1), peaking 2018 (NDVI = 0.71), with distinct north–south spatial gradient (lower values areas vs. higher southern regions). Statistically greening trends (p < 0.05) were observed 55.42% area. (2) Interannual fluctuations generally mild (Cv 0.15), yet central regions showed 2–3 times variability than southern/northwestern areas. Future projections (H 0.62) indicated sustained NDVI growth. (3) Climatic factors dominated dynamics, sunshine hours precipitation exhibiting strongest explanatory power (q 0.727 0.697, respectively), while elevation–precipitation interaction achieved peak capacity 0.845). (4) correlated positively 43.62% (rmean 0.47), whereas average temperature, maximum ≥10 °C accumulated suppressed growth −0.06 −0.42), confirming as primary driver regional recovery. multi-scale analytical framework developed here provides methodological empirical support precision governance climate-sensitive transitional zones, particularly optimizing functions arid semi-arid regions.

Language: Английский

Citations

0
Shifts in the Soil Microbial Community and Enzyme Activity Under Picea crassifolia Plantations and Natural Forests DOI Open Access
Yan Zheng, Qiuyun Fan, Yushuang Geng

et al.

Forests, Journal Year: 2024, Volume and Issue: 16(1), P. 14 - 14

Published: Dec. 25, 2024

Soil microbes are crucial for regulating biogeochemical cycles and maintaining forest ecosystem sustainability; however, the understanding of microbial communities enzyme activity under natural plantation forests in plateau regions remains limited. Using soil samples from 15-, 30-, 50-year-old Picea crassifolia plantations a (NF) eastern Qinghai, China, this study assessed physicochemical properties, communities, across three layers. Microbial composition was characterized using phospholipid fatty acid (PLFA) method, which is sensitive to structural changes. The PLFAs bacteria, fungi, actinomycetes accounted 58.31%–74.20%, 8.91%–16.83%, 3.41%–10.41% total all forests, respectively. There were significant differences between NF plantations, with exhibiting higher PLFA abundance activities than except fungal PLFAs. increased age. However, fungi-to-bacteria ratio lower plantations. Finally, redundancy analysis revealed that properties influence functionality significantly. These findings highlight stand age on structure, offering valuable insights management practices aimed at conserving forests.

Language: Английский

Citations

1
The Long-Term Cumulative Effect of Management Decisions on Forest Structure and Biodiversity DOI
Teele Paluots, Jaan Liira,

Mare Leis

et al.

Published: Jan. 1, 2024

Download This Paper Open PDF in Browser Add to My Library Share: Permalink Using these links will ensure access this page indefinitely Copy URL DOI

Language: Английский

Citations

0
Soil communities following clearcut and salvage harvest have different early successional dynamics compared with post-wildfire patterns DOI Creative Commons
Teresita M. Porter, Dave Morris, Emily Smenderovac

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 11, 2024

Abstract Understanding the impacts of harvest and subsequent silviculture practices at stand scales on below-ground biota, their associated nutrient cycling processes, is needed to more fully evaluate sustainable management boreal forest systems. While replacing wildfire primary natural disturbance mechanism in jack pine-dominated systems; clearcut also results renewal so sometimes used silvicultural systems emulate processes. In this study, we simultaneously assessed successional trajectories three major taxa below ground soil community, bacteria, fungi, arthropods using DNA metabarcoding. The objectives study were use a chronosequence framework to: 1) assess whether communities following converge along gradient, 2) when community recovers pre-disturbance, mature, reference condition, 3) effects cumulative succession (i.e., followed by salvage harvesting fire-killed trees). We found that richness (alpha diversity) did not illustrate any clear patterns convergence could, therefore, underestimate recovery times, especially for arthropods. Comparisons underlying composition (beta proved be informative. case, different recovered timelines compared with stand-replacing wildfire. general, bacteria appear first post-wildfire conditions arthropods, however, fungi within time frame chronosequence. This suggests extended periods are required achieve complete fungal pre-disturbance condition. appeared have greater (compounded) effect or harvest. work showcases performance scalable method monitoring diverse arrange biota future work, tracking arthropod may provide insights into longer-term current guidance comparing alternative approaches. Open Research Statement Sequences been deposited NCBI SRA under GRDI-Ecobiomics project accession PRJNA565010 BioSample accessions SAMN26926703 - SAMN26926795 study. MetaWorks v1.9.3 multi-marker metabarcode bioinformatic pipeline available from https://github.com/terrimporter/MetaWorks . ITS classifier based UNITE+INSD full dataset v8.2 trained RDP Classifier ( https://github.com/terrimporter/UNITE_ITSClassifier ). COI v4 https://github.com/terrimporter/CO1Classifier code produce figures, including infile metadata files, will https://github.com/terrimporter/Chronosequence_HarvestType

Language: Английский

Citations

0