Assessment approach for conservation effectiveness and gaps for endangered species based on habitat suitability: A case study of alpine musk deer in western China

Ecological Indicators, Год журнала: 2025, Номер 170, С. 113080 - 113080

Опубликована: Янв. 1, 2025

Язык: Английский

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Geographical Distribution and Ecological Niche Changes of Four Evergreen Broad-Leaved Quercus Species in China Under Climate Change

Опубликована: Янв. 1, 2025

Quercus species plays a key role in maintaining biodiversity and ecosystem stability as an important component of forest ecology. However, conservation researches on changes the geographic distribution ecological niche have been limited. In this study, we employed optimized MaxEnt model to simulate potential dynamics four evergreen broad-leaved (Q.baronii, Q.dolicholepis, Q.glauca, Q.spinosa) Yangtze Yellow River basins under different climate scenarios (SSP126 SSP585) 2050s 2070s. The relative contribution environmental factors future these was assessed through modeling. results show that Precipitation Coldest Quarter (bio19) Temperature Annual Range (bio7) are most affecting species. Habitat suitability for Q. baronii spinosa trended downward, while dolicholepis glauca expanded their habitat ranges. addition, change led significant contraction baronii, dolicholepis, SSP585-2050s scenario, had more pronounced effect expansion broadleaf other scenarios.

Язык: Английский

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Conservation methods for Trollius mountain flowers in Xinjiang, China under climate change: Habitat networks construction based on habitat suitability and protected areas optimization response

Journal of Environmental Management, Год журнала: 2025, Номер 376, С. 124519 - 124519

Опубликована: Фев. 17, 2025

Язык: Английский

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Gut Microbial Adaptation to Varied Altitudes and Temperatures in Tibetan Plateau Yaks

Microorganisms, Год журнала: 2024, Номер 12(7), С. 1350 - 1350

Опубликована: Июль 1, 2024

The yak (Bos grunniens) exhibits exceptional regional adaptability, enabling it to thrive in the distinctive ecological niches of Qinghai-Tibet Plateau. Its survival relies on intricate balance its intestinal microbiome, essential for adapting harsh environmental conditions. Despite documented significance bacteria and fungi maintaining homeostasis supporting immune functions, there is still a substantial gap understanding how composition functionality gut microbiota vary along altitude-temperature gradients. This study aims fill this by employing 16S rRNA ITS amplicon sequencing techniques analyze compare microbiome yaks residing at different elevations exposed varying temperatures. findings demonstrate subtle variations diversity fungi, accompanied significant changes taxonomic across various altitudes temperature Notably, Firmicutes, Actinobacteriota, Bacteroidota emerged as dominant phyla all groups, with Actinobacteriota exhibiting highest proportion (35.77%) LZF group. Functional prediction analysis revealed associations between group metabolic pathways related amino acid metabolism biosynthesis. suggests potential role actinomycetes enhancing nutrient absorption yaks. Furthermore, our suggest that may enhance energy catabolism modulating Firmicutes-to-Bacteroidota ratio, potentially mitigating effects variations. Variations bacterial fungal communities among three distinct groups were analyzed using metagenomic techniques. Our indicate microbial genera increases lower are largely beneficial. To sum up, research investigated populations diverse altitude ranges. Moreover, these results comprehension makeup variability, offering perspectives resilience dry lot feeding from angle.

Язык: Английский

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Spatial distribution and priority conservation areas identification in Three-River-Source National Park considering the multifaceted values of plants

Journal of Environmental Management, Год журнала: 2024, Номер 370, С. 122594 - 122594

Опубликована: Сен. 19, 2024

Язык: Английский

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Enhancements of soil priming effect and carbon sequestration in degraded alpine meadows via supplementation: a comparative study of Tibetan sheep (Ovis aries) and plateau pika (Ochotona curzoniae) excrements

Ecological Processes, Год журнала: 2025, Номер 14(1)

Опубликована: Янв. 2, 2025

Abstract Background Grassland degradation decreases the capacity of soil carbon sequestration, while supplementation exogenous organic matter enhances priming effect (PE) and affects cycle in soil. The excrements Tibetan sheep ( Ovis aries ) plateau pika Ochotona curzoniae play an important role cycling. Therefore, they were used to enrich alpine meadow soils degraded different levels after incubation at 20 °C for up 45 days. PE was analyzed using natural 13 C isotope tracer method relation properties. Results two kinds excrement significantly increased accumulation sequestration. Of two, achieved a better effect. Compared with non-degraded soil, severely had PE, but lightly moderately not from each other. Structural equation modelling shows that total nitrogen (TN), (SOC), β-1,4-N-acetylaminoglucosidase (NAG), β-1,4-glucosidase (βG), pH, microbial biomass (MBC) are main factors affecting PE. In particular, TN directly negatively affected SOC NO 3 − -N:NH 4 + -N ratio indirectly by enzyme activity MBC. Conclusions This study demonstrates supplement animal can improve extracellular content soils, which is conducive net balance. Supplementation both effectively enhance further increase activity, fertility sequestration ability seriously higher than those excrement, promote meadows. findings this provide theoretical evidence rational utilization degradation.

Язык: Английский

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Identifying climate refugia for wild yaks (Bos mutus) on the Tibetan Plateau

Journal of Environmental Management, Год журнала: 2024, Номер 366, С. 121655 - 121655

Опубликована: Июль 8, 2024

Язык: Английский

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Hypoxia-Inducible Factor 1α Affects Yak Oocyte Maturation and Early Embryonic Development by Regulating Autophagy

Antioxidants, Год журнала: 2024, Номер 13(7), С. 840 - 840

Опубликована: Июль 14, 2024

In animal assisted reproductive technology, the production of high-quality oocytes is crucial. The yak, having lived in Qinghai-Tibet Plateau for an extended period, has cells that are regulated by hypoxia-inducible factor 1α (HIF-1α). This study aimed to investigate impact HIF-1α on yak oocyte maturation and early embryonic development vitro through regulation autophagy. process involved addition inducer DFOM inhibitor LW6 examine their effects maturation, development, cell autophagy, cytochrome P450s (CYP450s) enzyme expression, cumulus diffusion factors. findings revealed significantly upregulated expression HIF-1α, resulting increased area, elevated first polar body expulsion rate oocytes, enhanced mitochondrial actin levels, decreased ROS production, reduced apoptosis levels oocytes. Moreover, promoted autophagy-related proteins, CYP450s enzymes, factors, thereby enhancing development. Conversely, exhibited opposite effects. inhibition autophagy with 3-MA during treatment yielded similar outcomes. Furthermore, reducing led at all stages as well a significant decrease total number ICM/TE ratio blastocysts. Studies have shown can affect expansion area regulating excretion rate, level, enzyme, improving These offer valuable insights into mechanism yaks hypoxic environments suggest potential strategies advancement technology.

Язык: Английский

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Restoration of degraded alpine grasslands: problems, techniques, and sustainable approaches

Elsevier eBooks, Год журнала: 2024, Номер unknown, С. 237 - 259

Опубликована: Дек. 4, 2024

Язык: Английский

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Spatial Distribution and Priority Conservation Areas Identification in Three-River-Source National Park Considering the Multifaceted Values of Plants

Опубликована: Янв. 1, 2024

Язык: Английский

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