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Investigate phytoplankton community composition and quantify the ecological niches of dominant species across seasonal and elevation gradients in the upper and middle Yarlung Zangbo River.

April 30, 2025WaterOpen Access

Hydrological Conditions and Dominant Phytoplankton Species in the Middle and Upper Reaches of the Yarlung Zangbo River, Tibetan Plateau

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Investigate phytoplankton community composition and quantify the ecological niches of dominant species across seasonal and elevation gradients in the upper and middle Yarlung Zangbo River.
Collected seasonal aquatic samples across 14 monitoring sites in April (spring) and September (autumn) 2023 along four elevation zones ranging from below 3500 m to above 4500 m.
Quantified taxonomic composition, ecological niche width, interspecific niche overlap, and environmental associations with water temperature, pH, and salinity.
Identified 198 species across 53 genera, with average cell abundance reaching 1.28 × 10⁶ cells/m³ in April compared to 6.76 × 10⁵ cells/m³ in September.
Classified 16 dominant species (Y > 0.02), with water temperature, pH, and salinity emerging as primary drivers of niche differentiation.
Elevation exerted a stronger influence on community structure than season, with interspecific niche overlap peaking in September and at elevations exceeding 4500 m.

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Implication

Field survey reveals elevation and water temperature drive phytoplankton niche differentiation in a high-altitude river, indicating environmental controls on alpine aquatic ecosystems.

Cite This Study

Xu et al. (2025) studied this question.

synapsesocial.com/papers/6a87aaae7596ae0644e67eba https://doi.org/10.3390/w17091346

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Implication

Field survey reveals elevation and water temperature drive phytoplankton niche differentiation in a high-altitude river, indicating environmental controls on alpine aquatic ecosystems.

Hydrological Conditions and Dominant Phytoplankton Species in the Middle and Upper Reaches of the Yarlung Zangbo River, Tibetan Plateau

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Discussion

Implication

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Hydrological Conditions and Dominant Phytoplankton Species in the Middle and Upper Reaches of the Yarlung Zangbo River, Tibetan Plateau

Key Points

Discussion

Implication

Cite This Study

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