Tidal Influence on Nutrients Status and Phytoplankton Population of Okpoka Creek, Upper Bonny Estuary, Nigeria

Table 5

Variations of Chlorophyceae species under tidal influence in Okpoka Creek.

S/no.	Species	Means ± SEM (%)			Statistical difference (ANOVA)
		Overall	Low tide	High tide
1	Microspora villeana	22.35 ± 2.33	23.15 ± 2.89^a	19.18 ± 0.61^b	𝑃<0.05
2	Spirotaenia 𝑠𝑝𝑒𝑐𝑖𝑒𝑠^∗	11.88 ± 4.12	11.88 ± 4.12	—
3	Coelochaeta nitellarum	76.16 ± 16.16	76.16 ± 16.16	—
4	Mesotaenium 𝑠𝑝𝑒𝑐𝑖𝑒𝑠^∗	16.08 ± 8.17	26.55 ± 13.46^a	5.59 ± 0.24^b	𝑃<0.05
5	Entransia dichloroplastes	23.85 ± 16.16	23.85 ± 16.16	—
6	Chactosphora 𝑠𝑝𝑒𝑐𝑖𝑒𝑠^∗	1.47 ± 0.00	1.47 ± 0.00	—
7	Tetraedron tumidulum	7.53 ± 2.51	8.48 ± 3.04^a	3.76 ± 2.45^b	𝑃<0.05
8	Tetmemorus 𝑠𝑝𝑒𝑐𝑖𝑒𝑠^∗	1.77 ± 0.00	—	1.77 ± 0.00
9	Penium 𝑠𝑝𝑒𝑐𝑖𝑒𝑠^∗	2.07 ± 0.00	2.07 ± 0.00	—
10	Crucigenia rectangularis	21.47 ± 2.83	18.13 ± 2.03^b	28.15 ± 6.81^a	𝑃<0.05
11	C. fenestrate	36.39 ± 2.70	37.62 ± 2.73^a	26.56 ± 0.00^b	𝑃<0.05
12	C. puadrata	13.65 ± 3.62	12.66 ± 4.92^b	16.61 ± 0.00^a	𝑃<0.05
13	Gonatozygon aculeatum	29.69 ± 3.23	29.69 ± 3.23	—
14	G. 𝑠𝑝𝑒𝑐𝑖𝑒𝑠^∗	12.18 ± 6.39	12.18 ± 6.39	—
15	Staurastrum grande	5.90 ± 2.21	7.36 ± 2.88^a	2.99 ± 0.00^b	𝑃<0.05
16	S. natator	14.29 ± 0.00	14.29 ± 0.00^a	6.18 ± 0.02^b	𝑃<0.05
17	Closterium dianae	6.18 ± 0.02	—	21.59 ± 0.92
18	C. parvulum	16.16 ± 2.49	10.74 ± 2.92^a	7.21 ± 2.12^b	𝑃<0.05
19	C. gracile	7.81 ± 1.75	10.19 ± 2.11^a	2.36 ± 0.00^b	𝑃<0.05
20	C. kuetzingii	2.36 ± 0.00	—	1.81 ± 0.00
21	C. macilentus	1.81 ± 0.00	—	4.72 ± 0.00
22	C. strigosum	4.72 ± 0.00	—	5.01 ± 0.01
23	Cosmarium 𝑠𝑝𝑒𝑐𝑖𝑒𝑠^∗	7.14 ± 0.00	7.14 ± 0.00^b	20.00 ± 0.00^a	𝑃<0.05
24	C. granatum	11.40 ± 8.60	2.80 ± 0.00^b	13.42 ± 0.00^a	𝑃<0.05
25	Cladophora glomerata	15.94 ± 2.52	18.45 ± 0.00^a	9.73 ± 5.55^b	𝑃<0.05
26	C. elegans	12.21 ± 2.98	14.69 ± 2.71^b	64.99 ± 30.82^a	𝑃<0.05
27	Draparnaldia 𝑠𝑝𝑒𝑐𝑖𝑒𝑠^∗	42.39 ± 21.92	8.50 ± 6.47^b	24.89 ± 18.58^a	𝑃<0.05
28	Coelastrum microporum	20.04 ± 9.14	15.80 ± 10.95^b	18.96 ± 3.96^a	𝑃<0.05
29	C. recticulatum	16.62 ± 3.28	8.82 ± 2.44^b	13.33 ± 0.00^a	𝑃<0.05
30	Rhizodonium hookeri	12.98 ± 0.36	12.62 ± 0.00^a	1.01 ± 0.00^b	𝑃<0.05
31	Desmidium grevillii	1.52 ± 0.51	2.03 ± 0.00^b	11.53 ± 2.29^a	𝑃<0.05
32	D. aptogonum	8.62 ± 3.19	2.80 ± 0.00^b	5.09 ± 0.00^a	𝑃<0.05
33	Planktosphaeria gelatinosa	5.21 ± 0.12	5.33 ± 0.00^b	43.71 ± 5.06^a	𝑃<0.05
34	Netrium digitus	44.19 ± 4.72	1.72 ± 0.00	—
35	Treubaria crassispina	1.72 ± 0.00	20.48 ± 12.86	—
36	Bulbochaeta 𝑠𝑝𝑒𝑐𝑖𝑒𝑠^∗	20.48 ± 12.86	12.90 ± 0.44	—
37	Clostridium lunula	12.90 ± 0.44	7.62 ± 0.00	—
38	Docidium 𝑠𝑝𝑒𝑐𝑖𝑒𝑠^∗	7.62 ± 0.00	44.44 ± 0.00	—
39	Ankistrodesmus 𝑠𝑝𝑒𝑐𝑖𝑒𝑠^∗	44.44 ± 0.00	7.41 ± 0.00	—
40	Oedogonium 𝑠𝑝𝑒𝑐𝑖𝑒𝑠^∗	7.41 ± 0.00	38.33 ± 0.00	—
41	Scenedesmus 𝑠𝑝𝑒𝑐𝑖𝑒𝑠^∗	38.33 ± 0.00	14.82 ± 0.00	—
42	Spirogyra 𝑠𝑝𝑒𝑐𝑖𝑒𝑠^∗	14.82 ± 0.00	2.07 ± 0.00	—
43	Cladophora 𝑠𝑝𝑒𝑐𝑖𝑒𝑠^∗	2.07 ± 0.00	17.15 ± 2.86	—
44	Netrium 𝑠𝑝𝑒𝑐𝑖𝑒𝑠^∗	17.15 ± 2.86	18.05 ± 3.05	—

Means with the same letter in the same row are not significantly different (𝑃>0.05).
∗Means unidentified; —: absent.