Seasonal and spatial variations of macrobenthic community in intertidal Sargassum field off Naozhou Island, South China Sea

作     者：Caixue ZHANG Weinan ZHOU Xingli SUN Sheng KE Yaoqian LIU Zhiguang SONG Caixue ZHANG;Weinan ZHOU;Xingli SUN;Sheng KE;Yaoqian LIU;Zhiguang SONG

作者机构：Monitoring Center of Ocean Resource and EnvironmentGuangdong Ocean UniversityZhanjiang 524088China 

出 版 物：《Journal of Oceanology and Limnology》 (海洋湖沼学报（英文）)

年 卷 期：2021年第39卷第2期

页      面：637-651页

核心收录：

学科分类：07[理学] 0713[理学-生态学] 

基　　金：Supported by the China Marine Special Nonprofit Scientific Research(No.201505027) the Marine Geochemistry and Climate Change(No.002026002004) 

主　　题：macrobenthic marine algae species diversity seasonal distribution spatial distribution Naozhou Island 

摘      要：Seasonal and spatial variations in the macrobenthic community in an intertidal gulfweed field off Naozhou Island were investigated from April 2011 to January *** identified 407 macrobenthic organism species:64 macroalgae(15.72%of total species);123 Arthropoda(30.22%);107 Mollusca(26.29%);67 Annelida(16.46%);15 Cnidaria(3.69%);14 Echinodermata(3.44%);8 Porifera(1.97%);4 Chordata(0.98%);2 Urochorda(0.49%);and 1 each of Echiura,Sipunculida and Angiospermae(0.25%).Arthropods,mollusks,annelids,and macroalgae were four main groups in the benthic organism community and accounted for 88.70%of the total *** terms of abundance of biomass,there were 15 dominant species,including 8 macroalgal,5 mollusk and 2 arthropod *** species diversity indices ranged from 1.21 to 4.42 with an average of 2.80;the annual average of evenness was *** richness indices varied from 2.97 to 7.24(average 4.97);and Simpson dominance indices varied from 0.20 to 0.92 in annual average of *** distribution showed clear vertical zonation and seasonal *** number of macroalgal species found in the high tide zone,upper middle tide zone,middle tide zone,lower middle tide zone,low tide zone,and below low tide zone were 1,8,10,16,22,and 32,*** among the benthic organisms,macroalgae and crustaceans had significant positive correlation(P0.05)with the coefficients of 0.802,0.894,and 0.592,*** biomass showed a clearly negative correlation with the concentration of dissolved inorganic nitrogen(DIN)(R=0.486,P0.05).During the winter and spring,when macroalgae were growing vigorously,DIN reached the lowest level in seawater and displayed a clear weak correlation between macroalgal growth and the nutrient concentration.