The effects of suspended sediment on brown trout (Salmo trutta) feeding and respiration after macrophyte control
作者： MJC Greer , SK Crow , AS Hicks , GP Closs
DOI: 10.1080/00288330.2015.1013140
关键词:
摘要: Sediment resuspension during and after mechanical excavation of macrophytes may have a significant impact on resident fish populations. Unfortunately, little is known about the influence this sediment respiratory performance feeding abilities fishes in New Zealand waterways. We examined effects suspended (SS) concentrations previously observed large-scale macrophyte removal operation oxygen consumption (MO2) rates brown trout (Salmo trutta). MO2 at 0 mg L−1, 150 300 450 L−1 600 SS was measured using semi-closed respirometry. Feeding same were also laboratory tank experiments. Results suggest that up to no effect MO2. Conversely, significantly reduced (22% reduction) (31% reduction), indicating above negatively affect
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