Research Article
Life Cycle and Secondary Production of Four Species from Functional Feeding Groups in a Tropical Stream of South India
Table 1
The physicochemical parameters (mean ± SE) of a Thadaganachiamman stream in the Sirumalai hills of Southern India.
| | Parameter | Riffle | Pool |
| | Air temperature (°C) | 28.5 ± 1.2 | 28.5 ± 1.2 | | Water temperature (°C) | 24.0 ± 1.3 | 25 ± 1.1 | | Dissolved oxygen (mgL−1) | 13.0 ± 0.6 | 11.5 ± 0.8 | | pH | 6.5 ± 0.01 | 6.5 ± 0.01 | | Conductivity (mhos/cm) | 0.2 ± 0.002 | 0.2 ± 0.002 | | Stream width (m) | 1.0 ± 0.3 | — | | Stream depth (cm) | 14.0 ± 1.5 | 60.0 ± 4.3 | | Current velocity (cm/sec) | 0.4 ± 0.06 | 0.6 ± 0.04 | | Bedrock (%) | 30.0 ± 2.3 | — | | Boulders (%) | 25.0 ± 2.8 | — | | Pebbles (%) | 27.0 ± 1.9 | — | | Gravels (%) | 10.0 ± 2.1 | — | | Sand (%) | 4.0 ± 0.5 | 20.0 ± 1.4 | | Silt (%) | 3.0 ± 0.2 | 5.4 ± 0.4 | | Leaf litter (%) | 30.0 ± 3.1 | 50.0 ± 8.2 | | Woody debris/twigs (%) | 10.0 ± 1.5 | 20 ± 4.4 | | Canopy cover (%) | 60.0 ± 5.2 | 60.0 ± 5.2 | | Riparian cover (%) | 80.0 ± 5.2 | 80.0 ± 5.2 |
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