Freshwater Testate Amoebae of Nine Yunnan Plateau Lakes, China

Yang, Jun; Zhang, Wenjing; Feng, Wei; Shen, Yin

doi:10.1080/02705060.2005.9664798

Cited by 20 publications

(15 citation statements)

References 14 publications

(13 reference statements)

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“…For example, Ju et al (2014) reported a unimodal relationship for species diversity along a nutrient gradient for 51 lakes/reservoirs across China. Similarly, in the Yunnan Plateau, China, Yang et al (2005) recorded the highest diversity of testate amoebae in mesotrophic lakes and the lowest in hypereutrophic lakes. Furthermore, a palaeolimnological study of Sluice Pond, Massachusetts, USA, (Drljepan et al 2014) reported increased SDI values associated with eutrophication.…”

Section: Palaeo-inferred Testate Amoeba Ecologymentioning

confidence: 89%

“…The distinct testate amoeba assemblage is dominated by D. angulostoma and D. lithophila, both of which have very high and significant (p \ 0.001) indicator values. These taxa have been found in a range of lacustrine environments (Ellison 1995;Yang et al 2005;Alves et al 2010) and their presence has not been associated with any specific lake conditions. A number of possible factors may explain this distinctive surficial assemblage, including dissolution of these smaller specimens down-core or a significant recent alteration of the testate amoeba environment.…”

Section: Palaeo-inferred Testate Amoeba Ecologymentioning

confidence: 98%

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Refining the palaeoecology of lacustrine testate amoebae: insights from a plant macrofossil record from a eutrophic Scottish lake

et al. 2017

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Arcellinida (lobose testate amoebae) preserve well in lake sediments and have shown great potential as palaeolimnological indicators, but a limited understanding of their ecology prevents more indepth interpretations of both contemporary and fossil assemblages. Loch Leven, Scotland, has a well-documented history of nutrient-enrichment and associated lake biological change, creating a temporal gradient along which testate amoeba ecology can be investigated. Plant macrofossil data from a dated sediment core (LEVE14) indicate that a transition from oligomesotrophic to eutrophic conditions occurred over at least the last 200 years, enabling direct comparisons to be drawn with fossil testate amoeba assemblages from the same core. Cluster analysis and principal components analysis show that testate amoebae and macrophytes responded synchronously to an early phase of nutrient-enrichment after ca. AD 1200, and to anthropogenic water-level lowering and further enrichment after ca. AD 1830. The results of indicator species analysis (IndVal) support the suggestion inferred previously that Cucurbitella tricuspis is an indicator of nutrient-enrichment, while the association of some less abundant taxa, specifically Difflugia amphora and Mediolus corona, with eutrophic environments is also corroborated. Overall, the testate amoeba assemblage response appears to reflect a complex interaction of factors which were ultimately driven by eutrophication. These include variations in microhabitat associated with changing plant structure and sedimentary conditions influenced by macrophyte community succession. In particular, a shift from an oligo-mesotrophic macrophyte assemblage composed of isoetid plants to one dominated by Potamogeton spp. and dense stands of Characeae is suggested to influence the relative proportions of sediment dwelling and plant-associated testate amoebae. The results highlight the utility of testate amoebae as benthic indicators of lake nutrient-enrichment and demonstrate the value of using multi-proxy palaeolimnological data to refine the ecology of lesser-studied palaeoecological groups.

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Section: Palaeo-inferred Testate Amoeba Ecologymentioning

confidence: 89%

Section: Palaeo-inferred Testate Amoeba Ecologymentioning

confidence: 98%

Refining the palaeoecology of lacustrine testate amoebae: insights from a plant macrofossil record from a eutrophic Scottish lake

et al. 2017

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“…The data for this study were obtained from our previous work (Yang et al 2005) on freshwater testate amoebae of nine Yunnan Plateau lakes, China (Table 1). We documented 94 species and subspecies (2 1 genera) from these plateau lakes.…”

Section: Methodsmentioning

confidence: 99%

“…Factors affecting testate amoebae assemblages are undoubtedly numerous and include pH (Booth 2001), trophic status (Yang et al 2005), water chemistry (Mitchell et al 2000), hydrological conditions (Bobrov et al 1999), habitat structure (Beyens et al 1995), and environmental heterogeneity (Velho et al 2003). The biogeography of testate amoebae was first studied by Certes (1891) in the southern hemisphere.…”

Section: Introductionmentioning

confidence: 99%

Relationships between Testate Amoebae Assemblages (Protozoa) and Geographic Factors in Yunnan Plateau Lakes, China

Yang¹,

Zhang²,

Shen³

2009

Journal of Freshwater Ecology

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Knowledge of the effect of geographic factors on the assemblages of protozoan testate amoebae is still limited, despite there having been a number of studies on this fauna. We applied statistical analyses to data on the distribution of testate amoebae from nine major lakes in the Yunnan Plateau, southwest China. Cluster analysis, based on community structure, separated the lakes into two groups -the oligotrophic/mesotrophic lakes and the hypereutrophic lakes -confirming the idea that the testate amoebae assemblages in lakes are closely related to the trophic status. Additionally, within the oligotrophic/mesotrophic lakes, there was distinct geographic clustering. Linear regression analysis and the Mantel test both revealed that similarity of species composition decreased with increasing geographic distance among the oligotrophic/mesotrophic lakes.

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“…S. minutulus and C. dubius both are considered more eutrophic taxa (Hall and Smol 1999;Reavie et al 1995;Qi 1995;Edlund et al 1995;Yang et al 2005a, b). C. dubius and S. minutulus are also present in samples from lakes of the middle and lower Yangtze River (Yang et al 2005a(Yang et al , b, 2008. Changes in the absolute and relative abundance of A. granulata, C. rhomboideo-elliptica, S. minutulus and C. dubius in this study suggest that the trophic state of Lake Dianchi has gradually increased over the past 83 years.…”

Section: Discussionmentioning

confidence: 99%

Diatom community succession in the recent history of a eutrophic Yunnan Plateau lake, Lake Dianchi, in subtropical China

Gong

Shen

et al. 2009

Limnology

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Freshwater Testate Amoebae of Nine Yunnan Plateau Lakes, China

Cited by 20 publications

References 14 publications

Refining the palaeoecology of lacustrine testate amoebae: insights from a plant macrofossil record from a eutrophic Scottish lake

Refining the palaeoecology of lacustrine testate amoebae: insights from a plant macrofossil record from a eutrophic Scottish lake

Relationships between Testate Amoebae Assemblages (Protozoa) and Geographic Factors in Yunnan Plateau Lakes, China

Diatom community succession in the recent history of a eutrophic Yunnan Plateau lake, Lake Dianchi, in subtropical China

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