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Design and operation of a low-cost and compact autonomous buoy system for use in coastal aquaculture and water quality monitoring
Aquacultural Engineering ( IF 4 ) Pub Date : 2018-01-01 , DOI: 10.1016/j.aquaeng.2017.12.002
Wiebke Schmidt 1, 2 , David Raymond 2 , David Parish 2 , Ian G C Ashton 1, 2 , Peter I Miller 3 , Carlos J A Campos 4 , Jamie D Shutler 1
Affiliation  

The need to ensure future food security and issues of varying estuarine water quality is driving the expansion of aquaculture into near-shore coastal waters. It is prudent to fully evaluate new or proposed aquaculture sites, prior to any substantial financial investment in infrastructure and staffing. Measurements of water temperature, salinity and dissolved oxygen can be used to gain insight into the physical, chemical and biological water quality conditions within a farm site, towards identifying its suitability for farming, both for the stock species of interest and for assessing the potential risk from harmful or toxic algae. The latter can cause closure of shellfish harvesting. Unfortunately, commercial scientific monitoring systems can be cost prohibitive for small organisations and companies to purchase and operate. Here we describe the design, construction and deployment of a low cost (<£ 5000) monitoring buoy suitable for use within a near-shore aquaculture farm or bathing waters. The mooring includes a suite of sensors designed for supporting and understanding variations in near-shore physical, chemical and biological water quality. The system has been designed so that it can be operated and maintained by non-scientific staff, whilst still providing good quality scientific data. Data collected from two deployments totalling 14 months, one in a coastal bay location, another in an estuary, have illustrated the robust design and provided insight into the suitability of these sites for aquaculture and the potential occurrence of a toxin causing algae (Dinophysis spp.). The instruments maintained good accuracy during the deployments when compared to independent in situ measurements (e.g. RMSE 0.13–0.16 °C, bias 0.03–0.08 °C) enabling stratification and biological features to be identified, along with confirming that the waters were suitable for mussel (Mytilus spp.) and lobster (Homarus gammarus) aquaculture, whilst sites showed conditions agreeable for Dinophysis spp.

中文翻译:

用于沿海水产养殖和水质监测的低成本紧凑型自主浮标系统的设计和运行

确保未来粮食安全的需要和不同河口水质的问题正在推动水产养殖向近岸沿海水域扩张。在对基础设施和人员配备进行任何大量财务投资之前,对新的或拟建的水产养殖场进行全面评估是谨慎的做法。水温、盐度和溶解氧的测量可用于深入了解养殖场内的物理、化学和生物水质条件,以确定其对养殖的适宜性,包括感兴趣的种群物种和评估潜在风险来自有害或有毒的藻类。后者会导致贝类捕捞的关闭。不幸的是,对于小型组织和公司来说,购买和运营商业科学监测系统的成本可能过高。在这里,我们描述了适用于近岸水产养殖场或沐浴水域的低成本(<5000 英镑)监测浮标的设计、建造和部署。系泊设备包括一套传感器,旨在支持和了解近岸物理、化学和生物水质的变化。该系统的设计使其可以由非科学人员操作和维护,同时仍能提供高质量的科学数据。从总共 14 个月的两次部署中收集的数据,一个在沿海海湾位置,另一个在河口,说明了稳健的设计,并提供了对这些地点的水产养殖适用性和导致毒素藻类(Dinophysis spp. )。
更新日期:2018-01-01
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