title: Quantitative distribution and functional groups of intertidal macrofaunal assemblages in Fildes Peninsula, King George Island, South Shetland Islands, Southern Ocean.
abstract: To evaluate spatial distribution pattern of intertidal macrofauna, quantitative investigation was performed in January to February, 2013 around Fildes Peninsula, King George Island, South Shetland Islands. A total of 34 species were identified, which were dominated by Mollusca, Annelida and Arthropoda. CLUSTER analysis showed that macrofaunal assemblages at sand-bottom sites belonged to one group, which was dominated by Lumbricillus sp. and Kidderia subquadrata. Macrofaunal assemblages at gravel-bottom sites were divided into three groups while Nacella concinna was the dominant species at most sites. The highest values of biomass and Shannon-Wiener diversity index were found in gravel sediment and the highest value of abundance was in sand sediment of eastern coast. In terms of functional group, detritivorous and planktophagous groups had the highest values of abundance and biomass, respectively. Correlation analysis showed that macrofaunal abundance and biomass had significant positive correlations with contents of sediment chlorophyll a, phaeophorbide and organic matter.
authors.affiliation: College of Marine Life Sciences, Ocean University of China, Qingdao 266003, PR China. Electronic address: liuxs@ouc.edu.cn.
authors.forename: Xiaoshou
authors.initials: X
authors.lastname: Liu
authors.affiliation: College of Marine Life Sciences, Ocean University of China, Qingdao 266003, PR China.
authors.forename: Lu
authors.initials: L
authors.lastname: Wang
authors.affiliation: College of Marine Life Sciences, Ocean University of China, Qingdao 266003, PR China.
authors.forename: Shuai
authors.initials: S
authors.lastname: Li
authors.affiliation: College of Fisheries and Life Sciences, Shanghai Ocean University, Shanghai 201306, PR China.
authors.forename: Yuanzi
authors.initials: Y
authors.lastname: Huo
authors.affiliation: College of Fisheries and Life Sciences, Shanghai Ocean University, Shanghai 201306, PR China.
authors.forename: Peimin
authors.initials: P
authors.lastname: He
authors.affiliation: College of Marine Life Sciences, Ocean University of China, Qingdao 266003, PR China.
authors.forename: Zhinan
authors.initials: Z
authors.lastname: Zhang
mesh_terms: D000818:Animals; D000864:Antarctic Regions; D059001:Aquatic Organisms / Q000145:classification* / Q000502:physiology; D044822:Biodiversity; D018533:Biomass; D002734:Chlorophyll / Q000032:analysis; D000077194:Chlorophyll A; D019015:Geologic Sediments / Q000737:chemistry; D062312:Islands; D009792:Oceans and Seas; D011157:Population Dynamics
chemical_list: D002734:Chlorophyll; D000077194:Chlorophyll A
keywords: Antarctica; Biodiversity; Fildes Peninsula; Functional group; Intertidal sediment; Macrofauna