Geospatial variability in the autumn community structure of epipelagic zooplankton in the upper layer of the northern South China Sea

Zoological Studies

Table 2 Mean abundance, relative abundance, and occurrence ratio of each zooplankton taxon

Zooplankton taxa	Mean ± SD (ind./m ³)	RA (%)	OR (%)
Dinophyta/Dinophyceae
Noctiluca spp.	72.89 ± 139.95	23.79	85.71
Protozoa/Sarcomastigophora/Radiolaria
Radiolaria	3.12 ± 4.94	1.02	57.14
Chromista/Harosa/Rhizaria/Foraminifera
Foraminifera	21.28 ± 50.31	6.95	85.71
Animalia/Eumetazoa/Coelenterata
Medusa	6.26 ± 9.28	2.04	100.0
Annelida/Polychaeta
Polychaeta	2.01 ± 3.12	0.66	85.71
Chaetognatha/Sagittidea/Sagittidae
Sagitta spp.	47.8 ± 53.62	15.60	100.0
Arthropoda/Crustacea/Branchiopoda
Ostracoda	30.99 ± 71.88	10.11	100.0
Arthropoda/Crustacea/Copepoda
Calanoida	81.23 ± 93.13	26.51	100.0
Cyclopoida	3.7 ± 8.92	1.21	28.57
Harpacticoida	0.71 ± 1.37	0.23	42.86
Poecilostomatoida	13.49 ± 7.58	4.40	100.0
Arthropoda/Crustacea/Malacostraca
Amphipoda	1.25 ± 1.54	0.41	71.43
Lucifera larvae	4.78 ± 4.59	1.56	100.0
Euphausiacea	6.98 ± 12.91	2.28	100.0
Animalia/Mollusca
Pteropoda	1.97 ± 3.26	0.64	71.43
Protochordata/Urochordata
Appendicularia	1.22 ± 1.54	0.40	71.43
Protochordata/Urochordata/Thaliacea
Thaliacea	4.83 ± 7.91	1.58	85.71
Eumetazoa/Deuterostomia/Chordata
Fish larvae	1.87 ± 3.2	0.61	85.71

Mean abundance (mean ± standard deviation, individuals per cubic meters (ind./m³)), relative abundance (RA), and occurrence ratio (OR) of each zooplankton taxon during the cruise ORIII-CR 563 on 27 September to 2 October 1999.