Table 3 Occurrence records and species richness of macroinvertebrates based on stream orders in the Guineo-Congolian region.

From: A spatial inventory of freshwater macroinvertebrate occurrences in the Guineo-Congolian biodiversity hotspot

Order

Number of records

Species richness

1

3859

705

2

1578

496

3

992

336

4

846

356

5

437

231

6

368

238

7

261

177

8

210

162

9

195

130

10

21

21

11

22

18

12

20

12

Headwater streams (orders 1–3)

6429

865

Medium streams (orders 4–6)

1651

558

Rivers (orders 7–12)

729

370

  1. NB: Classification system based on reference122.
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