3. Results

3.1 Sampling sites

Nine sample sites were chosen for this investigation. However, streams Jb and Jc were not sampled because they were not easily accessible.

Fig 3: Location of sampling sites.

3.2 Physiochemical and Bio-indicator Data

The nine sites varied quite widely in some of their water quality parameters such as Dissolved Oxygen, pH, Turbidity, conductivity, and Total Dissolved Solids, whilst others such as temperature and Salinity showed minimal variation between sites. For the Odonates sampled, stream Hd and Open Fields showed a significant difference from the other sites. I was unable to find any odonates in

Stream Ha. (Table 2).

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Location	Stream Ha	Stream Hb	Stream Hc	Stream Hd	Stream He	Stream Ja	Bridge 2 (Br)	Bridge (Br2)	Fields (OF)
Latitude	N01°21’13.5”	N01°21’18.4”	N01°21’27.1”	N01°21’19.7”	N01°21’23.9”	N01°21’19.2”	N01°21’10.4”	N01°21’00.6”	N01°20’57.0”
Longitude	E103°48’29.2”	E103°48’27.5”	E103°48’21.8”	E103°48’17.1”	E103°48’10.6”	E103°47’57.1”	E103°48’23.1”	E103°48’25.7”	E103°48’30.6”
Habitat	Shaded stream	Open stream	Shaded stream	Open fields	Shaded stream	Shaded stream	Shaded stream	Shaded stream	Open fields
Predators	Fishes found	Fishes found	Fishes found		Fishes found	Fishes found	Fishes found	Fishes found
Date	02/04/2011	02/04/2011	02/04/2011	10/4/2011	22/4/2011	02/04/2011	02/04/2011	22/4/2011	22/4/2011
Time	17:55:56	16:42:44	15:45:46	12:56:38	12:32:50	14:10:51	18:36:59	14:58:09	14:58:09
DO* ( % )	69.6	90.4	87.5	69.0	56.5	86.1	82.4	75.8	75.8
DO (mg/L)	5.72	7.35	7.13	5.61	4.58	7.01	6.70	5.71	5.71
DO Temp(deg C)	25.7	25.8	25.7	26.1	26.0	27.0	25.8	26.8	26.8
Temp (deg C)	25.58	25.70	25.62	25.93	25.36	26.94	25.64	26.62	26.62
pH	6.23	5.69	5.15	5.72	5.55	6.09	6.41	6.0	6.0
Turbidity(NTU)	6.0	10.6	2.1	7.6	0.8	7.1	10.3	2.9	2.9
Cond**(microS/cm )	37	25	17	37	35	76	27	60	60
TDS*** ( g/L )	0.024	0.016	0.011	0.024	0.022	0.048	0.017	0.038	0.038
Salinity****	0.02	0.01	0.01	0.02	0.01	0.03	0.01	0.03	0.03
Damselflies					Euphaea impar		Euphaea impar
			Prodasineura notostigma		Prodasineura notostigma	Prodasineura notostigma
		Podolestes orientalis			Vestalis amethystina	Podolestes orientalis	Vetalis amethystinna	Vetalis amethystinna
Dragonflies		Tyriobapta torrida	Tyriobapta torrida	Neurothemis fluctuans		Tyriobapta torrida		Tyriobapta torrida	Orchithemis pulcherrima
				Rhyothemis Phyllis
				Crocothemis servilia
				Ictinogomphus decoratus melaenops

  *DO: Dissolved Oxygen; **Cond: Conductivity; ***TDS: Total Dissolved Solids; ****Salinity: is expressed as a ratio of salinity to KCI of 35 g/L.

Table 2: Data collected from 9 sites in Upper MacRitchie Catchment Area

Fig 4: Matrix of the Odonates found within the Upper MacRitchie Basin during the study period.