Colonization dynamics of periphytic ciliate communities on an artificial substratum in coastal waters of the Yellow Sea, northern China

2012 ◽  
Vol 93 (1) ◽  
pp. 57-68 ◽  
Author(s):  
Wei Zhang ◽  
Henglong Xu ◽  
Yong Jiang ◽  
Mingzhuang Zhu ◽  
Khaled A.S. Al-Rasheid
Keyword(s):  
Species Composition ◽  
Exposure Time ◽  
Coastal Waters ◽  
Yellow Sea ◽  
Northern China ◽  
The Yellow Sea ◽  
Species Number ◽  
Similar Species ◽  
Artificial Substratum ◽  
Colonization Dynamics

Colonization dynamics of periphytic ciliate communities were studied in coastal waters of the Yellow Sea, northern China from May to June 2010, using an artificial substratum. Samples were collected at two depths of 1 and 3 m. The temporal patterns of ciliate colonization had similar dynamics and were fitted to the MacArthur–Wilson and logistic models in colonization and growth curves at both depths, respectively. The ciliate communities reached equilibrium in species composition within at least 10-days exposure time. However, they differed in both structural and functional parameters between the two layers, despite similar species composition. The species diversity, evenness, the colonization rate (G) and maximum abundance (Amax) were distinctly higher, but the time for reaching 90% equilibrium species number (T90%) was shorter at the depth of 1 m than those at a deeper layer. Results suggest that it is an optimal strategy to collect the ciliate communities within shorter exposure time at 1 m for ecological research and a monitoring programme in marine ecosystems.

Seasonal shift in community pattern of periphytic ciliates and its environmental drivers in coastal waters of the Yellow Sea, northern China

2014 ◽  
Vol 95 (2) ◽  
pp. 277-288 ◽  
Author(s):  
Wei Zhang ◽  
Henglong Xu
Keyword(s):  
Seasonal Variation ◽  
Coastal Waters ◽  
Yellow Sea ◽  
Winter Season ◽  
Northern China ◽  
The Yellow Sea ◽  
Environmental Drivers ◽  
Species Number ◽  
Community Structures ◽  
Ciliate Species

Ciliates are a primary component of the periphyton microfauna and play a crucial role in the functioning of microbial food webs. Seasonal variation in community structures of periphytic ciliate communities was studied, using glass slides as an artificial substratum, during a 1-year cycle (August 2011–July 2012) in coastal waters of the Yellow Sea, northern China. Samples were collected monthly at a depth of 1 m from four sampling stations. A total of 144 ciliate species representing 78 genera, 43 families, 17 orders and eight classes were recorded. Among these species, 31 distributed in all four seasons, while 11, 11, 13 and two forms occurred only in spring, summer, autumn and winter season, respectively. The species number and total abundance peaked in spring and autumn, with minimum values in winter. Ciliate community structures differed significantly between seasons, and were significantly correlated with the changes in environmental variables, especially temperature, pH, dissolved oxygen (DO) and the nutrients. Of 36 dominant species (top 15 ranked contributors in each season), nine (e.g. Pseudovorticella paracratera, Trochilia minuta and Zoothamnium sp.) were significantly correlated with pH, DO or nutrients. Species richness, evenness and diversity measures were significantly correlated with temperature, pH, DO or soluble reactive phosphates. Results demonstrated that periphytic ciliates exhibited a clear seasonal variation in community structures in response to environmental conditions and potentially might be used as a robust bioindicator for assessing environmental quality status in coastal waters.

Vertical dynamics in community functioning of biofilm-dwelling ciliates during the colonisation process in coastal waters of the Yellow Sea

2019 ◽  
Vol 70 (11) ◽  
pp. 1611 ◽  
Author(s):  
Xiaoyun Bai ◽  
Congcong Guo ◽  
Mamun Abdullah Al ◽  
Alan Warren ◽  
Henglong Xu
Keyword(s):  
Functional Diversity ◽  
Functional Traits ◽  
Coastal Waters ◽  
Yellow Sea ◽  
Northern China ◽  
Diversity Indices ◽  
Functional Trait ◽  
The Yellow Sea ◽  
Biological Traits ◽  
Trait Distribution

Multifunctional trait analysis is increasingly recognised as an effective tool for assessing ecosystem function and environmental quality. Here, a baseline study was performed at four depths (i.e. 1, 2, 3.5 and 5m) in Yellow Sea coastal waters of northern China in order to determine the optimal depth for bioassessment using biological traits of biofilm-dwelling ciliates. Community-weighted means (CWM) from functional traits system were used to summarise the trait distribution and functional diversity of ciliates among the four depths during a 1-month colonisation period. Functional trait distribution revealed a clear temporal variation among the four depths. In total, 3 of 17 functional traits (i.e. feeding type, body size and flexibility) showed significant temporal patterns. Bootstrapped averaging and permutational multivariate analysis of variance (PERMANOVA) tests demonstrated that the colonisation pattern of biofilm-dwelling ciliates as expressed by CWM at 1 and 2m differed significantly from those at 3.5 and 5m. Functional diversity indices showed lower variability at 1 and 2m than at 3.5 and 5m. These results suggest that 1 and 2m are the preferred sampling depths for bioassessment of marine water quality using biological traits of biofilm-dwelling ciliates.

Colonization dynamics in trophic-functional patterns of biofilm-dwelling ciliates using two methods in coastal waters

2015 ◽  
Vol 95 (4) ◽  
pp. 681-689 ◽  
Author(s):  
Qi Wang ◽  
Henglong Xu
Keyword(s):  
Species Richness ◽  
Coastal Waters ◽  
Logistic Models ◽  
Growth Curves ◽  
The Yellow Sea ◽  
Artificial Substratum ◽  
Initial Stage ◽  
Functional Patterns ◽  
Colonization Dynamics ◽  
Stage 1

The colonization dynamics in trophic-functional structure of biofilm-dwelling ciliate fauna were studied using two methods based on an artificial substratum in Korean coastal waters of the Yellow Sea during April 2007. Polyurethane foam enveloped slide (PFES) and conventional slide (CS) systems were used to collect ciliate samples at a depth of 1 m. The ciliate fauna represented similar colonization dynamics in trophic-functional patterns that were driven mainly by the algivores, bacterivores and non-selectives in both systems. Simple trophic-functional patterns (e.g. algivores and non-selectives) occurred within the ciliate fauna at the initial stage (1–3 days), while complex patterns (e.g. algivores, non-selectives and bacterivores) were established at the transitional (5–7 days) and equilibrium (9–19 days) stages. However, the time in which ciliate fauna reached a stable trophic-functional pattern was shorter in the PFES than in the CS system. Among four trophic-functional types, the algivores and bacterivores significantly fitted the MacArthur-Wilson and logistic models in colonization and growth curves in both systems, respectively. Furthermore, the species richness and diversity of algivores and bacterivores were significantly higher in the PFES system than in the CS. These results suggest that the PFES system was more effective than the conventional slide method for a colonization survey on trophic-functional patterns of biofilm-dwelling ciliate fauna in marine ecosystems.

Trophic-functional patterns of biofilm-dwelling ciliates at different water depths in coastal waters of the Yellow Sea, northern China

2018 ◽  
Vol 63 ◽  
pp. 34-43 ◽  
Author(s):  
Mamun Abdullah Al ◽  
Yangyang Gao ◽  
Guangjian Xu ◽  
Zheng Wang ◽  
Alan Warren ◽  
...  
Keyword(s):  
Coastal Waters ◽  
Yellow Sea ◽  
Northern China ◽  
The Yellow Sea ◽  
Functional Patterns ◽  
Water Depths

Influence of enumeration time periods on detecting community parameters of periphytic diatoms using an artificial substratum in coastal waters

2013 ◽  
Vol 93 (8) ◽  
pp. 2067-2073 ◽  
Author(s):  
Yuanyuan Liu ◽  
Wei Zhang ◽  
Henglong Xu
Keyword(s):  
Coastal Waters ◽  
Northern China ◽  
The Yellow Sea ◽  
Standard Errors ◽  
Artificial Substratum ◽  
Enumeration Schemes ◽  
Periphytic Diatoms ◽  
Time Periods ◽  
Almost All ◽  
Periphytic Diatom

Community parameters of diatoms have been used as useful bioindicators for bioassessment of both lentic and lotic systems. The influence of enumeration time periods on detecting community parameters of periphytic diatom assemblages within different exposure times was studied using an artificial substratum in coastal waters of the Yellow Sea, northern China, during the period May–June 2010. Samples were collected at a depth of 1 m, and were examined with different enumeration time periods. Enumeration time periods represented a significant influence on detecting the community features of periphytic diatoms, although no significant changes occurred in periphytic diatom community structure between two enumeration schemes (within 24 h and 24–48 h). The delayed enumeration (within 24–48 h) may result in the similarity of the communities being reduced 10–29%, and in species numbers decreasing and in abundance increasing with exposure duration, respectively. The diversity (richness, evenness and diversity of species) indices were significantly decreased in almost all samples with >10% standard errors at some exposure times by the delayed enumeration scheme. These results suggest that the delayed enumeration may have resulted in the species richness and individual abundance of periphytic diatoms significantly decreasing and increasing, respectively, and thus significantly affected the analyses of species diversity for assessing water quality in marine ecosystems.

Insights into seasonal shift in the homogeneity of periphytic protozoan fauna in coastal waters of the Yellow Sea, northern China

2021 ◽  
Vol 168 ◽  
pp. 112367
Author(s):  
Mohammad Shafiqur Rahman ◽  
Syed Shabi Ul Hassan Kazmi ◽  
Uroosa ◽  
Henglong Xu
Keyword(s):  
Coastal Waters ◽  
Yellow Sea ◽  
Northern China ◽  
The Yellow Sea ◽  
Seasonal Shift

Variations in the community structure of biofilm-dwelling protozoa at different depths in coastal waters of the Yellow Sea, northern China

2017 ◽  
Vol 99 (1) ◽  
pp. 43-50 ◽  
Author(s):  
Mamun Abdullah Al ◽  
Yangyang Gao ◽  
Guangjian Xu ◽  
Zheng Wang ◽  
Henglong Xu ◽  
...  
Keyword(s):  
Species Richness ◽  
Community Structure ◽  
Coastal Waters ◽  
Yellow Sea ◽  
Northern China ◽  
Marine Ecosystems ◽  
Artificial Substrates ◽  
The Yellow Sea ◽  
Individual Species ◽  
Protozoan Community

Biofilm-dwelling protozoa are a primary component of microbiota and play important roles in the functioning of microbial food webs such as the mediation of carbon and energy flux from plankton to benthos in marine ecosystems. To demonstrate the vertical pattern of the protozoan communities, a 1-month baseline survey was carried out in coastal waters of the Yellow Sea, northern China. A total of 40 samples were collected using glass slides as artificial substrates at four depths: 1, 2, 3.5 and 5 m. A total of 50 species were identified, comprising seven dominant and eight commonly distributed species. Species richness and individual species abundances showed a clear decreasing trend down the water column from 1 to 5 m, although the former peaked at a depth of 2 m. Multivariate approaches revealed that protozoan community structure differed significantly among the four depths, except for those at 2 and 3.5 m. Maximum values of species richness, diversity and evenness generally decreased with depth although they peaked at either 2 or 3.5 m. These results suggest that water depth may significantly shape the community patterns of biofilm-dwelling protozoa in marine ecosystems.

Temporal variations in taxonomic relatedness of periphytic ciliate microfauna during its colonization periods in coastal waters of the Yellow Sea, northern China

2014 ◽  
Vol 95 (1) ◽  
pp. 53-61 ◽  
Author(s):  
Yuping Xu ◽  
Wei Zhang ◽  
Yuanyuan Liu ◽  
Alan Warren ◽  
Henglong Xu
Keyword(s):  
Coastal Waters ◽  
Yellow Sea ◽  
Northern China ◽  
Temporal Variations ◽  
High Variability ◽  
Artificial Substrates ◽  
The Yellow Sea ◽  
Taxonomic Distinctness ◽  
Taxonomic Relatedness ◽  
Coefficients Of Variation

Temporal variations in the taxonomic relatedness of periphytic ciliate microfauna during colonization periods were studied in coastal waters of the Yellow Sea, northern China, from May to June 2010. Samples were collected at two depths of 1 and 3 m, using glass slides as artificial substrates. The colonization dynamics of ciliate microfauna on the slides revealed similar patterns in species composition at both depths. In the immature communities (1–7 days), the taxonomic patterns showed high variability compared to those in the mature ones (10 days and more). However, taxonomic relatedness parameters at the two depths differed during early stages of colonization (e.g. 1–3 days). Taxonomic diversity (Δ) was subject to high variability (coefficients of variation >10%) in both immature and mature communities, whereas taxonomic distinctness (Δ*), average taxonomic distinctness (Δ+) and variation in taxonomic distinctness (Λ+) showed high stability (coefficients of variation <10%) during the colonization times of 3–21 days. These findings suggest that 3–21-day exposure times are sufficient to detect the taxonomic distinctness of periphytic ciliate microfauna at water depths of 1–3 m for the purposes of ecological research and monitoring of marine ecosystems.

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