Diversity, distribution and abundance of fish species in upper Awash River Basin, West Showa Zone, Ethiopia

Figures & data

Table 1. The selected sampling stations and morphometric features of Upper Awash River basin with their GPS coordination

Sampling stations	Altitude	Width mean (m)	Depth mean (m)	Coordinate		(%) Fine sediment	% Gravel	% Rock	% Macrophytas
				X (Longitude)	Y (Latitude)
S-I	2475	1.2	0.16	040° 81ʹ55.0”	10° 04ʹ 562”	30	15	45	10
S-II	2346	2	0.45	040 ^o 48ʹ11.0”	10° 02ʹ 362”	40	17	35	8
S-III	2252	2.5	0.87	040 ^o 08ʹ56.0”	09° 99ʹ 333”	70	4	15	11
S-IV	2200	2.4	1.2	040 ^o 63ʹ45.0”	09° 96ʹ 336”	75	2	15	10
S-V	2176	2.6	1.15	040 ^o 74ʹ67.0”	09° 95ʹ 341”	60	25	5	10

S = indicates sampling station

Figure 1. Map of the study area showing the sampling stations in Upper Awash River

Table 2. Some physico-chemical parameters (mean ± SD) and range of waters samples collected from five sampling stations

Parameters	S-I	S-II	S-III	S-IV	S-V
	Mean and range	Mean and range	Mean and range	Mean and range	Mean and range
pH	8.5 (8.2, 8.5,- 9.0)	8.7 (8.4, 8.7, 9.2)	8.8 (8.2, 8.8, 9.5)	8.7 (8.4, 8.7, 9.3)	8.8 (8.5, 8.8, 9.3)
DO (mg/L)	7.7(7.6, 7.7, 7.8)	7.4 (6.7, 7.4, 7.9)	7.4 (6.7, 7.4, 8.3)	7.5 (6.8, 7.5, 7.9)	8.4 (7.4, 8.4, 9.4)
Temp. (^0C)	12.7 (11.8, 12.7.,12.8)	13.7 (12.8, 13.7, 14.2)	23.1 (21.8, 23.1, 24.03)	22.7 (22.3, 22.7, 23.0)	23.4 (22.5, 23.4, 24.6)
EC (µS/cm)	187.7 (169.1, 187.7, 172.7)	334.7 (312.3, 334.7, 368.3)	375.5 (371.0, 375.5, 379.3)	478.4 (469.8, 478.4, 483.5)	495.4 (494.4, 495.4, 496.4)
N-No3 (mg/L)	0.1(0.1, 0.1, 0.1)	0.4 (0.3, 0.4, 0.6)	0.8 (0.8, 0.8, 0.9)	0.4 (0.1, 0.4, 0.5)	0.4 (0.4, 0.4, 0.5)
T-p (mg/L)	0.1(0.04, 0.1, 0.1)	0.1 (0.04, 0.1, 0.1)	0.3 (0.1, 0.3, 0.6)	0.1 (0.1, 0.1, 0.2)	0.075 (0.1, 0.075, −0.2)

N-NO3 = Nitrate, DO = Dissolved oxygen, T-P = Total phosphorus, EC = Electrical conductivity, ẋ ± SD = Mean ± standard deviation, S = study site

Table 3. Diversity of fish species in Upper Awash River Basin

Species	Family	Number	Percentage (%)
G. quadrimaculata	Cyprinidae	1681	55.7
G. dembeensis	Cyprinidae	1196	39.63
L. beso	Cyprinidae	141	4.67
Total		3018	100

Figure 2. The sketch of fish species collected from the study sites

Table 4. Diversity and relative abundance of fish species in all sites of Upper Awash River

Species		Stations
	S-I (Galessa)		S-II (Arera)		S-III (Anjory)		S-IV (Walgata)		S-V (Osole)		Total
	No.	%	No.	%	No.	%	No.	%	No.	%	No.	%
G. quadrimaculata		_	180	85.71	498	58.92	414	49.66	589	52.17	1681	55.7
G. dembeensis		_	30	14.29	300	35.50	355	42.57	511	45.26	1196	39.63
L. beso		_	0	_	47	5.58	65	7.77	29	2.57	141	4.67
Total		_	210	100	845	100	834	100	1129	100	3018	100

S-I, S-II, S-III, S-IV and S- V indicates sampling site.

Figure 3. The composition of fish samples collected from riffle and pool habitats of the five sampled sites in the upper Awash River Basin (S-I, S-II, S-III, S-IV and S-V indicate the sampling sites)

Table 5. Species diversity index and richness in present stations of upper Awash River

Species	Sampling Stations
	S-I (Galessa)	S-II (Arera)	S-III (Anjory)	S-IV (Walgata)	S-V(Osole)
No. of Family	0	1.00	1.00	1.00	1.00
No. of species	0	2.00	3.00	3.00	3.00
Shannon’s H	0	0.27	0.14	0.80	0.14
Evenness (J’)	0	0.90	0.30	1.70	0.30

S-I, S-II, S-III, S-IV and S- V indicates the sampling sites