The assemblage characteristics of benthic macroinvertebrates in the Yalutsangpo River, the highest major river in the world

Xu, Mengzhen; Wang, Zhaoyin; Pan, Baozhu; Yu, Guoan

doi:10.1007/s11707-014-0414-2

Cited by 13 publications

(7 citation statements)

References 20 publications

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“…Altitude has been considered as the most important variable determining the living conditions of macroinvertebrates in plateau areas [23]. Xu et al [5] showed that assemblage structures and functional feeding compositions of macroinvertebrates were closely related to altitude. This study indicated that the local biodiversity may not be significantly affected by altitude, while the high regional biodiversity of highland rivers was obviously associated with the high altitudes, and especially the high altitude gradients, which created the high habitat heterogeneity.…”

Section: Discussionmentioning

confidence: 99%

“…These studies consistently indicated that the compositions of macroinvertebrate assemblages in the plateau were significantly associated with the high altitudes and the variation trends of biodiversity might be different from that of the lowland rivers. However, how the macroinvertebrate communities responded to altitude gradient and the other environmental variables associated with altitude was not clear from these three studies [2,5,10].…”

Section: Introductionmentioning

confidence: 96%

“…Its environmental and ecological conditions have been the focus of attention for decades owing to its unique geographical location and ecological functions including water resource conservation and biodiversity protection [3]. It has been expected to have novel relationships of macroinvertebrate communities with stream habitat variables since highly diverse and unique assemblages of aquatic Protozoa, Insecta, Hirudinea, Rotatoria, and Crustacea have been reported [4,5].…”

Section: Introductionmentioning

confidence: 99%

“…Macroinvertebrates are among the most important components of the aquatic ecosystem and have been considered as useful indicators for analyses of relationships of biotic communities with stream habitat variables because of their confinement to the river bed, limited movement abilities, long life cycles, and sensitivity to environmental changes [9]. Xu et al [5] reported the major features of the macroinvertebrate communities in several sections of the main stem and tributaries of the Yalutsangpo River. Jiang et al [2] analyzed the longitudinal patterns of macroinvertebrates in relation to environmental factors in the Niyang River, the largest first-order tributary of the Yalutsangpo.…”

Section: Introductionmentioning

confidence: 99%

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Macroinvertebrate Biodiversity Trends and Habitat Relationships within Headwater Rivers of the Qinghai-Tibet Plateau

Zhao

Zhou

et al. 2018

Water

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Highland running-water biodiversity has gained growing interest around the world, because of the more pristine conditions and higher sensitivity to environmental changes of highland rivers compared to the lowland rivers. This study presents the findings of systematic investigations and analyses on running-water biodiversity of macroinvertebrate assemblages in the most important headwater streams in the Yalutsangpo and Sanjiangyuan River basins in the Qinghai-Tibet Plateau and the lowland headwaters of the Songhua River, Juma River, and East River during the non-flood seasons of 2012 to 2016. The results indicated that the headwaters on the plateau had a higher regional biodiversity compared to the lowland rivers with the similar flow and substrate conditions. Even though the local diversity of the highland rivers was not significantly different at each single site, the taxonomic composition was significantly different with several rarely seen species scattering among the different sites, resulting in a high regional biodiversity. The biodiversity and composition of macroinvertebrates were strongly affected by the altitude gradient and the environmental variables associated with altitude. To be specific, for the Yalutsangpo River, canonical correspondence analyses of the macroinvertebrate assemblages and their environmental variables indicated that altitude, stream condition (represented by river pattern, riverbed structures, substrate composition), and water temperature influence macroinvertebrate taxa composition. Because of the restrictive plateau conditions including low water temperature, poor aquatic and riparian vegetation, and low runoff, the macroinvertebrate assemblages showed low biodiversity and were vulnerable to potential human disturbance/climate change. Therefore, it is essential to conserve suitable conditions of the determinative environmental variables to protect the unique and high regional biodiversity of the headwaters on the Qinghai-Tibet Plateau.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Macroinvertebrate Biodiversity Trends and Habitat Relationships within Headwater Rivers of the Qinghai-Tibet Plateau

Zhao

Zhou

et al. 2018

Water

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“…In contrast, habitats in debris-flow deposits (DD, DDu and DDd) had relatively low a-diversity in a single patch, probably because of limited refugia or reduced trophic supply, but relatively high b-diversity among patches because of high habitat heterogeneity, which can generate high reach-scale diversity. Xu et al (2014) similarly reported that in Tibetan Plateau rivers, regional biodiversity was high but local biodiversity was low, possibly because of the high heterogeneity in habitats along large geomorphological gradients. Table 2.…”

Section: Role Of Debris-flow Deposition In Enhancing the Reach-scale mentioning

confidence: 83%

Debris-flow deposits on a major river influence aquatic habitats and benthic macroinvertebrate assemblages

Zhou

Wang

et al. 2019

Freshwater Science

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Natural barriers formed by avalanche deposits, landslides, and debris flows are commonly distributed along deep incised rivers where they block river channels and create diverse river habitats. However, little is known about the effects these naturally-occurring features have on the diversity of macroinvertebrate assemblages. We, therefore, conducted a field study to assess how aand b-diversity of stream macroinvertebrates were influenced by these deposits. The Nujiang River (upper Salween River) basin in China has more than 200 debris-flow deposits in the 300-km long Grand Canyon reach. We assessed differences in environmental variables and macroinvertebrate assemblages among 5 habitat types, including portions of the main channel and tributaries without these deposits and 3 other habitat types associated with debris deposits. We calculated a-diversity for each habitat type as individual-based rarefied richness and b-diversity among sampled patches within each habitat type with the Whittaker Index. Generally, patches within the debris-flow deposits had lower a-diversity, density, and biomass compared with patches in the non-deposit reaches. These results indicate that the different habitat types in the debrisflow reaches had markedly different abiotic and biotic conditions than the non-deposit main channel reaches and tributaries. However, patches in the debris-flow deposits had higher b-diversity than non-deposit reaches. By creating diverse habitat types, the debris-flow deposits enlarged the environmental gradients for macroinvertebrate assemblages, which increased regional aquatic biodiversity.

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Macroinvertebrate assemblages in relation to environments in the dongting lake, with implications for ecological management of river‐connected lakes affected by dam construction

Pan

Wang

et al. 2016

Env Prog and Sustain Energy

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The Dongting Lake, a river‐connected lake, plays a vital role in people's living, agricultural production, and ecological security of the Yangtze River basin. A systematic investigation of macroinvertebrates was conducted in the Dongting Lake during May 2004 ‐ January 2005. Altogether 65 taxa belonging to 27 families and 53 genera were identified. The annual average density and biomass of total macroinvertebrates were 265 ind/m2 and 2.40 g dry mass/m2, respectively. It is demonstrated that seasonal variation existed in environmental factors structuring macroinvertebrate assemblages of the Dongting Lake. Hydrological parameters (i.e., flow velocity, water depth) were the driving factors for macroinvertebrate assemblages in spring and summer, whereas the concentrations of water nutrients (i.e., phytoplankton chlorophyll a, total dissolved phosphorus) played the leading role in governing macroinvertebrate assemblages in autumn and winter. After operation of the Three Gorges Dam in 2009, the Dongting Lake may be confronted with the threat of species diversity declining and assemblage structure changing. Thus, ecological restoration measures shall be put forward. © 2016 American Institute of Chemical Engineers Environ Prog, 36: 914–920, 2017

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The assemblage characteristics of benthic macroinvertebrates in the Yalutsangpo River, the highest major river in the world

Cited by 13 publications

References 20 publications

Macroinvertebrate Biodiversity Trends and Habitat Relationships within Headwater Rivers of the Qinghai-Tibet Plateau

Macroinvertebrate Biodiversity Trends and Habitat Relationships within Headwater Rivers of the Qinghai-Tibet Plateau

Debris-flow deposits on a major river influence aquatic habitats and benthic macroinvertebrate assemblages

Macroinvertebrate assemblages in relation to environments in the dongting lake, with implications for ecological management of river‐connected lakes affected by dam construction

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