Table 2.

Variations in species number and diversity indices from (a) different cruises and (b) stations.

(a)	Jan-2018	Apr-2018	Jul-2018		Oct-2018	Jan-2019	Apr-2019	Jul-2019	Apr-2020		Oct-2020	Dec-2020
S	22	43	80		45	33	40	34	46		46	55
D	4.702	7.883	12.411		8.059	6.290	7.084	6.375	8.329		8.408	9.987
J′	0.9039	0.9303	0.9156		0.9354	0.9165	0.9399	0.9173	0.9331		0.9350	0.9142
H’	2.794	3.499	4.012		3.561	3.205	3.467	3.235	3.572		3.580	3.664
(b)	X5	X6	X7	X10	X12	X14	X17	X19	X21	X22	X23	X24
S	78	65	69	73	69	71	66	63	64	61	68	54
D	14.44	12.20	12.92	13.64	13.27	13.52	12.56	12.09	12.16	11.67	12.92	11.28
J’	0.9489	0.9381	0.9456	0.9476	0.9481	0.9367	0.9370	0.9472	0.9426	0.9354	0.9324	0.9593
H’	4.134	3.916	4.004	4.066	4.014	3.993	3.926	3.925	3.920	3.846	3.934	3.827

S, D, J′ and H′ represent taxa richness, Margalef richness index, Pielou’s evenness index, and Shannon–Wiener diversity index, respectively.