Acta Oceanol. Sin., 2014, Vol. 33, No. 9, P. 160–165 DOI: 10.1007/s13131-014-0466-x http://www.hyxb.org.cn E-mail:
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Colonization dynamics of periphytic diatoms in coastal waters of the Yellow Sea, northern China Liu Yuanyuan1, Zhang Wei1, Xu Henglong1* 1
Institute of Evolution and Marine Biodiversity, Ocean University of China, Qingdao 266003, China
Received 12 March 2013; accepted 13 September 2013 ©The Chinese Society of Oceanography and Springer-Verlag Berlin Heidelberg 2014
Abstract The colonization features of periphytic diatoms were studied in coastal waters of the Yellow Sea, northern China from May to June 2010, using glass slides as an artificial substratum. Samples were collected at a time interval of 1, 3, 7, 10, 14, 21 and 28 d from two depths of 1 and 3 m. The dynamics of diatom colonization process had a similar pattern in community structure and fitted the logistic model in growth curve at both depths. The maximum abundance and the time for reaching 50% maximum abundance (10 d) showed no significant differences (P>0.05) between two depths 1 and 3 m. Although the diatom communities represented similar taxonomic composition, they differed in the temporal pattern of structural parameters and in succession dynamics of dominant species between the two layers. The species richness showed significantly higher values during the colonization period more than 14 d, while the species diversity and evenness represented a higher variability with significantly different values (P0.05; Fig. 3d); and Navicula directa represented a reverse case with significantly different abundances compared with Pinnularia sp. (t-test: P
