Multiparameter cluster analysis of seasonal variation of water masses in the eastern Beibu Gulf

Chen, Shengli; Li, Yan; Hu, Jianyu; Zheng, Airong; Huang, Lingfeng; Lin, Yan

doi:10.1007/s10872-011-0071-y

Cited by 22 publications

(27 citation statements)

References 3 publications

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“…Affected by the surface and subsurface water, the bottom water which originates from the coastal water is limited below the thermocline and covers only a small area east of Bailongwei Island [16], [43]. In our study, the thermocline was observed at a depth of 10–30 m in stations 4, 5, 6 and 11.…”

Section: Discussionmentioning

confidence: 69%

“…As the fourth largest fish farming area in China, the Beibu Gulf has abundant marine resources due to the rich terrigenous nutrients carried by coastal rivers. Influenced by the East Asian Monsoon, southwesterly winds prevail in summer and northeasterly winds in winter [16] , [17] . Controlled by multiple water masses and currents, the whole Beibu Gulf has complex hydrologic condition [17] .…”

Section: Introductionmentioning

confidence: 99%

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Phosphorus, Nitrogen and Chlorophyll-a Are Significant Factors Controlling Ciliate Communities in Summer in the Northern Beibu Gulf, South China Sea

et al. 2014

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Ciliates (protozoa) are ubiquitous components of plankton community and play important roles in aquatic ecosystems in regards of their abundance, biomass, diversity and energy turnover. Based on the stratified samples collected from the northern Beibu Gulf in August 2011, species composition, abundance, biomass, diversity and spatial pattern of planktonic ciliates were studied. Furthermore the main environmental factors controlling ciliate communities were determined. A total of 101 species belonging to 44 genera and 7 orders (i.e., Oligotrichida, Haptorida, Euplotida, Sessilida, Pleurostomatida, Scuticociliatida and Tintinnida) were identified. The variation of ciliate communities was significant at horizontal level, but that was not at vertical level. Based on cluster analysis, ciliate communities were divided into three main groups. Redundancy analysis (RDA) revealed that Group A, existing in the waters with higher concentration of phosphorus and nitrogen, was dominated by Tintinnidium primitivum. Group B in the waters with lower temperature and chlorophyll-a concentration, was dominated by Leegaardiella ovalis. Group C, existing in the waters with higher temperature and chlorophyll-a concentration, was dominated by large Strombidium spp. and Mesodinium rubrum. Combining multiple analytic methods, our results strongly supported that phosphorus, nitrogen and chlorophyll-a were the most significant factors affecting the ciliate communities in the northern Beibu Gulf in summer. Concentration of phosphorus and nitrogen primarily influenced ciliate biomass, implying a potential impact of eutrophication on ciliate growth. The correlation with chlorophyll-a concentration, on one hand indicate the response of ciliates to the food availability, and on the other hand, the ciliates containing chloroplasts or endosymbionts may contribute greatly to the chlorophyll-a.

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Section: Discussionmentioning

confidence: 69%

Section: Introductionmentioning

confidence: 99%

Phosphorus, Nitrogen and Chlorophyll-a Are Significant Factors Controlling Ciliate Communities in Summer in the Northern Beibu Gulf, South China Sea

et al. 2014

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“…In oceanic areas of the SCS, a range of mesoscale physical processes occur, such as monsoons, upwelling, and eddies (Chen et al 2011;Jing et al 2008;Su 2004). These processes give rise to variation in environmental characters across spatial domains and influence the distributions of planktonic ciliates (Liu et al 2010a;Wang et al 2014;Zhang et al 2010).…”

Section: Oceanic Watermentioning

confidence: 99%

Progress in studies on the diversity and distribution of planktonic ciliates (Protista, Ciliophora) in the South China Sea

Liu

Shin

et al. 2020

Mar Life Sci Technol

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As an important component of microzooplankton, ciliates play a key role in matter cycling and energy flow in marine planktonic ecosystems. Studies of planktonic ciliate have been extensive in the South China Sea (SCS) over the last 20 years. Here, we summarize the recent progress on the diversity and distribution of this group in the SCS. This includes that in: (1) the waters covering the intertidal zone of the northern SCS, most studies have focused on taxonomy, with 71 species collected, identified, and described (with ~ 40% new species); (2) neritic waters distribution patterns have been examined at a regional scale, with ciliates displaying significant spatial variations and seasonal dynamics; (3) in oceanic waters, there has been a focus on ciliate distribution in north, centre, and south regions, where mesoscale physical processes play roles in controlling distributions, and noticeable vertical variations occur. More generally, some studies examine the influences of environment variables on ciliates, and indicate that chlorophyll a concentration is commonly positively correlated with ciliates abundance. In addition, some significant findings are summarized, the limitations of past studies are considered, and recommendations are made for future work on planktonic ciliates in SCS.

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“…(Chen 1986, Chen et al 2011. The intrusion of South China Sea water into the south of the Beibu Gulf has been investigated in various physical oceanographic studies (Chen 1986, Sun 2005, Chen et al 2011.…”

Section: Relationship Between Water Masses and The Hyperiideamentioning

confidence: 99%

Hyperiid amphipod communities and the seasonal distribution of water masses in eastern Beibu Gulf, South China Sea

Zhang¹,

Lin²,

He³

et al. 2014

Aquat. Biol.

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The species composition and abundance of the planktonic Hyperiidea and their relationship with environmental factors (depth, temperature, salinity, dissolved oxygen, turbidity and chlorophyll a concentration) were analyzed based on 4 seasonal investigations in the Beibu Gulf between 2006 and 2007. Hyperiids were represented by 82 species, 5 of which had not previously been recorded in the South China Sea. The hyperiid communities were dominated by Lestrigonus bengalensis year-round, Hyperioides sibaginis was dominant in spring, summer and autumn, and Tullbergella cuspidata became dominant in spring. Both species richness and the Shannon-Wiener diversity index increased from north to south, and from nearshore to offshore. Biodiversity was higher in some regions where the water mass was strongly influenced by the open sea or the lower salinity water off the northern sea shelf. Results of partial correlation analysis showed that species richness was positively related to depth at all times, and negatively related to temperature only in summer and winter. TWINSPAN classification indicated that the Hyperiidea community was divided into 2 groups in spring and winter (a widely distributed group and a pelagic warm-water group), and 3 groups in summer and autumn. A clear distinction between euryhaline and pelagic species can be discerned, based on different geographical distributions of water masses.

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Multiparameter cluster analysis of seasonal variation of water masses in the eastern Beibu Gulf

Cited by 22 publications

References 3 publications

Phosphorus, Nitrogen and Chlorophyll-a Are Significant Factors Controlling Ciliate Communities in Summer in the Northern Beibu Gulf, South China Sea

Phosphorus, Nitrogen and Chlorophyll-a Are Significant Factors Controlling Ciliate Communities in Summer in the Northern Beibu Gulf, South China Sea

Progress in studies on the diversity and distribution of planktonic ciliates (Protista, Ciliophora) in the South China Sea

Hyperiid amphipod communities and the seasonal distribution of water masses in eastern Beibu Gulf, South China Sea

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