A portable, modular, self-contained recirculating chamber to measure benthic processes under controlled water velocity
| Autor: | Danelle M. Larson, Matt T. Trentman, Janine Rüegg, John D. Brant, Walter K. Dodds |
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| Rok vydání: | 2015 |
| Předmět: | |
| Zdroj: | Freshwater Science. 34:831-844 |
| ISSN: | 2161-9565 2161-9549 |
| DOI: | 10.1086/682328 |
| Popis: | We report the design, construction, and functional characteristics of a sealable, portable chamber for measuring benthic metabolic process rates, particularly those under unidirectional flow as found in streams. The design optimizes inherent tradeoffs, such as size, stability, and cost, associated with chambers built for field-based measurements. The chamber is small enough to be portable and minimizes the water-volume:benthic surface-area ratio. In addition, the chamber is clear to allow measurement of photosynthetic rates. The design minimizes power draw to sustain water velocities found at stream field sites and is modular to allow easy disassembly and cleaning. The design is relatively simple, thereby increasing sturdiness, minimizing construction costs, and decreasing the expertise required to build the unit. We demonstrated the performance characteristics, specifically amperage needed to achieve desired water velocity, flow heterogeneity and turbulence in the working area, the degree of isol... |
| Databáze: | OpenAIRE |
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