The Rotifer Assemblage in a Shallow, Eutrophic Chinese Lake and Its Relationships with Cyanobacterial Blooms and Crustacean Zooplankton

Geng, Hong; Xie, Ping; Deng, Dexiang; Zhou, Qiong

doi:10.1080/02705060.2005.9664941

Cited by 24 publications

(13 citation statements)

References 24 publications

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“…Cyanobacterial blooms could potentially influence the growth and reproduction of larger cladocerans (Hietala et al 1995;Rohrlack et al 1999;DeMott 1999). Cyanobacterial blooms are also known to restructure the zooplankton population of a water body by favoring smaller species (Gilbert 1996;Geng et al 2005). In Lake Wulihu, no cyanobacterial blooms occurred during this study.…”

Section: Discussionmentioning

confidence: 86%

Comparative studies on seasonal variations of metazooplankton in waters with different eutrophic states in Lake Taihu

Yang

Zhong

Pan

2008

Environ Monit Assess

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A comparative study on the metazooplankton community was conducted in three different eutrophic areas, including Lake Wulihu, Meiliang Bay and the central open water area, in Lake Taihu from Oct. 2003 to Sep. 2004. Forty metazooplankton species were identified in Lake Wulihu, 37 in Meiliang Bay, and 34 in the central open water area. The annual average abundance of metazooplankton was 218 ind. l(-1) in the central open water area, 309 ind. l(-1) in Meiliang Bay, and 384 ind. l(-1) in Lake Wulihu. In Lake Wulihu, rotifers, Brachionus calyciflorus and Brachionus angularis, were the dominant species, which contributed 20.9% and 17.2% to the total metazooplankton abundance. Bosmina coregoni and Ceriodaphnia cornuta were the dominant species, contributing 20.4% and 11.3% of the total in Meiliang Bay, and contributing 21.6% and 16.2% of the total in the central open water area. There was a significant positive relationship between rotifers abundance and Secchi transparency. Cladoceran and copepod abundance were positively correlated with total phosphorus and water temperature. Our results show that structures of metazooplankton community differ between the three lake areas with different eutrophic states in Lake Taihu.

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Section: Discussionmentioning

confidence: 86%

Comparative studies on seasonal variations of metazooplankton in waters with different eutrophic states in Lake Taihu

Yang

Zhong

Pan

2008

Environ Monit Assess

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“…Up to now, no attempt is found at comparing whether the variance of rotifer density and species distribution explained by the sets of explanatory variables is statistically different. Although the middle and lower reaches of the Yangtze River are one of the central areas of freshwater shallow lakes in China, there has been very limited information on the interactions of rotifers with physicochemical factors and crustaceans (Geng et al 2005;Qian et al 2007;Shao et al 2001). Worldwide, there are also relatively less data available on rotifer species distribution in subtropical lakes.…”

Section: Introductionmentioning

confidence: 98%

The relative importance of physicochemical factors and crustacean zooplankton as determinants of rotifer density and species distribution in lakes adjacent to the Yangtze River, China

2010

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a b s t r a c tThe planktonic community of freshwater Rotifera in 27 subtropical lakes was studied to assess the relative importance of physicochemical factors and crustacean zooplankton as determinants of rotifer density and species distribution. Factor analysis and multiple linear regressions showed that 21.9% and 29.9% of the variance in rotifer density was explained by physicochemical factors and crustaceans, respectively. Larger rotifer density was possible in shallower lakes with higher concentration of inorganic nitrogen and less herbivorous crustaceans such as Sinocalanus dorrii and Daphnia. Redundancy analysis showed that the variances of rotifer species distribution explained by crustaceans and physicochemical factors were 26.9% and 31.0%, respectively. Further analysis demonstrated that the variances explained by pure crustaceans and pure physicochemical factors were 12.5% and 16.6%, respectively. However, these two percentages were not statistically different. Rotifer species distribution was strongly associated with Chl a and Moina micrura. Their coexistence with crustaceans seemed to be determined by their defense against potential predators and competitors.

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“…Pace, 1984;Quiró s 1990;Mazumder, 1994;Taylor & Carter, 1997). However, most of these studies are conducted in temperate lakes dominated by cladocerans, in particular Daphnia, and little is known about subtropical eutrophic lakes usually dominated by small omnivorous cladocerans and copepods (Yang et al, 1999;Geng et al, 2005). Mean body length of crustaceans shaped by contrasting fish predation pressure in these subtropical lakes may vary little from lake to lake.…”

Section: Introductionmentioning

confidence: 99%

Crustacean zooplankton size structure in aquaculture lakes: is larger size structure always associated with higher grazing pressure?

Wang

Xie

et al. 2006

Hydrobiologia

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Crustacean zooplankton size structure in 27 aquaculture lakes was studied to test the hypothesis that larger size structure is associated with higher grazing pressure. Mean body length of crustaceans was positively correlated with increasing Chl a (r 2 = 0.40, P = 0.000) and TP (r 2 = 0.38, P = 0.000), contrary to the empirical studies. However, the ratio of zooplankton to phytoplankton biomass decreased significantly with increasing TP (r 2 = 0.27, P = 0.005) and mean body length (r 2 = 0.46, P = 0.000). Meanwhile, size structure showed no significant effect in explaining residual variations of phosphoruschlorophyll relationship (P = 0.231). These results indicate that larger size structure was not always associated with higher zooplankton grazing pressure. It is likely that in aquaculture lakes crustacean zooplankton size structure was of minor importance in control of phytoplankton biomass, and it was mainly regulated by fish predation. The results showed in our study and the empirical studies might be a reflection of two different stages of lake eutrophication and fish predation intensity.

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The Rotifer Assemblage in a Shallow, Eutrophic Chinese Lake and Its Relationships with Cyanobacterial Blooms and Crustacean Zooplankton

Cited by 24 publications

References 24 publications

Comparative studies on seasonal variations of metazooplankton in waters with different eutrophic states in Lake Taihu

Comparative studies on seasonal variations of metazooplankton in waters with different eutrophic states in Lake Taihu

The relative importance of physicochemical factors and crustacean zooplankton as determinants of rotifer density and species distribution in lakes adjacent to the Yangtze River, China

Crustacean zooplankton size structure in aquaculture lakes: is larger size structure always associated with higher grazing pressure?

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