naa a22 4500 510754309 CHVBK 20180411083117.0 cr unu---uuuuu 180411e20130401xx s 000 0 eng 10.1007/s13131-013-0302-8 doi (NATIONALLICENCE)springer-10.1007/s13131-013-0302-8 Temporal and vertical distribution of microphytobenthos biomass in mangrove sediments of Zhujiang (Pearl River) Estuary [Elektronische Daten] [Weiqiu Liu, Jielong Zhang, Guanghong Tian, Hualin Xu, Xiaohua Yan] Being a primary producer, Microphytobenthos (MPB) play an important role in the benthic ecosystem of mangrove swamps. The temporal and vertical distribution of MPB biomass, expressed as chlorophyll a (Chl a), was investigated in mangrove swamps on the Qi'ao island and the Futian Mangrove Nature Reserve, Guangdong Province, South China. Both locations are situated in the Zhujiang (Pearl River) Estuary. For each location, bi-monthly sampling was carried out at four sites during low tide period. Except one site on the Qi'ao Island, which was in Phragmites australis marsh, all sites were in mangrove swamps. The Chl a concentration in surface (0-1 cm) sediment ranged from 0.2 µg/cm3 to 8.3 µg/cm3 in the Qi'ao Island and from 2.1 µg/cm3 to 15.6 µg/cm3 in the Futian Mangrove Reserve. The peak Chl a concentration occurred in winter or early spring, while the lowest Chl a concentration, with a value of about one quarter of the peak, was observed in summer or early autumn. The vertical distribution of Chl a concentration exhibited an exponential decline with depth, which indicated a muddy sediment with high organic matter, and the slope of the curve was positively related to Chl a concentration in the surface sediment. The MPB biomass of the Qi'ao Island was significantly lower than that of the Futian Mangrove Reserve. Our results suggest that the overlaying water quality might influence the MPB biomass in surface sediments. The Chinese Society of Oceanography and Springer-Verlag Berlin Heidelberg, 2013 microphytobenthos nationallicence mangrove nationallicence biomass nationallicence chlorophyll a nationallicence vertical distribution nationallicence Liu Weiqiu School of Life Sciences, Sun Yat-sen University, 510275, Guangzhou, China aut Zhang Jielong School of Life Sciences, Sun Yat-sen University, 510275, Guangzhou, China aut Tian Guanghong Management Office of Qi'ao-Dangan Provincial Nature Reserve, 519002, Zhuhai, China aut Xu Hualin Management Office of Qi'ao-Dangan Provincial Nature Reserve, 519002, Zhuhai, China aut Yan Xiaohua School of Life Sciences, Sun Yat-sen University, 510275, Guangzhou, China aut Acta Oceanologica Sinica The Chinese Society of Oceanography 32/4(2013-04-01), 82-88 0253-505X 32:4<82 2013 32 13131 https://doi.org/10.1007/s13131-013-0302-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s13131-013-0302-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Liu Weiqiu School of Life Sciences, Sun Yat-sen University, 510275, Guangzhou, China aut NATIONALLICENCE 700 1- Zhang Jielong School of Life Sciences, Sun Yat-sen University, 510275, Guangzhou, China aut NATIONALLICENCE 700 1- Tian Guanghong Management Office of Qi'ao-Dangan Provincial Nature Reserve, 519002, Zhuhai, China aut NATIONALLICENCE 700 1- Xu Hualin Management Office of Qi'ao-Dangan Provincial Nature Reserve, 519002, Zhuhai, China aut NATIONALLICENCE 700 1- Yan Xiaohua School of Life Sciences, Sun Yat-sen University, 510275, Guangzhou, China aut NATIONALLICENCE 773 0- Acta Oceanologica Sinica The Chinese Society of Oceanography 32/4(2013-04-01), 82-88 0253-505X 32:4<82 2013 32 13131 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer