Algal Blooms

McGowan, Suzanne

doi:10.1016/b978-0-12-394847-2.00002-4

Cited by 7 publications

(3 citation statements)

References 133 publications

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“…Commercial forestry in ROI and NI has often fertilized soils at rates of 50–90 kg P/ha (Dickson & Savill, ) which exceed the P‐binding capacity of such iron‐ and aluminium‐poor soils (Maguire et al ., ). Disproportionate increases in cyanobacteria following elevated nutrient influx have been recorded in many regions of the Northern Hemisphere (Taranu et al ., ) and reflect multiple concomitant fertilization mechanisms such as deposition of atmospheric nutrients (Holtgrieve et al ., ), agriculture (Battarbee et al ., ; Bunting et al ., ; Moorhouse et al ., ) and urbanization (Leavitt et al ., ; McGowan, ). Although total algal biomass usually increases with eutrophication, increases in phytoplankton production associated with fertilization may outcompete benthic algae and compress the photic zone in the water column, leading to changes in overall algal habitat and community composition (McGowan et al ., ).…”

Section: Discussionmentioning

confidence: 99%

Impacts of forestry planting on primary production in upland lakes from north‐west Ireland

Stevenson

McGowan

Anderson

et al. 2016

Global Change Biology

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Section: Discussionmentioning

confidence: 99%

Impacts of forestry planting on primary production in upland lakes from north‐west Ireland

Stevenson

McGowan

Anderson

et al. 2016

Global Change Biology

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“…Growth of dense algal blooms causes discoloration in water bodies. Among algal blooms, blue-green algae has the generic potential to produce toxins (van der Merwe, 2015) which are harmful to humans and animals and cause death of livestock (McGowan et al, 2016). Water monitoring programs and emergency plans can help reduce the impacts of algal blooms.…”

Section: Importance Of Water Quality Monitoringmentioning

confidence: 99%

Unmanned Aerial Vehicle (UAV) assisted water sampling

Koparan

2016

2016 ASABE International Meeting

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Water quality assessment programs require the collection of water samples for physical, chemical, and bacteriological analysis. Lack of personnel, accessibility of water bodies, and time constraints for water sampling, especially after natural disasters and emergencies, are some of the challenges of water sampling. To overcome these challenges, a water collection mechanism was developed and mounted on a multirotor unmanned aerial vehicle (UAV) for autonomous water sampling from water bodies. The payload capacity and endurance of the UAV (hexacopter) were verified using an indoor test station. The hexacopter was equipped with floating foam, and the electronic components were coated against water damage in case of landing on water due to emergencies or water sampling. The system was able to collect water samples 48 times out of 73 autonomous flight missions from a pond. The unsuccessful missions were mainly due to the malfunctions of the servo motor used in water sampler's triggering mechanism. The servo motor for the mechanism was replaced to prevent the future malfunctions. UAV-assisted autonomous water sampling is a promising method for collection of water from water bodies. The system would be useful for collection of water samples from large lakes or difficult to access water sources. The details of the developed water sampling mechanism and the multirotor UAV, and experiment results are reported in this thesis.iii ACKNOWLEDGMENTS

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“…The formation of the algae bloom happens when the concentration of algae is high at a particular spot. The growth of the algae population requires proper temperature, light availability, and essential nutrients, such as Nitrogen (N) and Phosphorus (P) [8]. The local government has made many attempts to mitigate the algae bloom, including wetland restoration, water transfer from the Yangtze River, and environmental dredging [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Wind Effects on the Water Age in a Large Shallow Lake

Liu

et al. 2020

Water

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As the third largest fresh water lake in China, Taihu Lake is suffering from serious eutrophication, where nutrient loading from tributary and surrounding river networks is one of the main contributors. In this study, water age is used to investigate the impacts of tributary discharge and wind influence on nutrient status in Taihu Lake, quantitatively. On the base of sub-basins of upstream catchments and boundary conditions of the lake, multiple inflow tributaries are categorized into three groups. For each group, the water age has been computed accordingly. A well-calibrated and validated three-dimensional Delft3D model is used to investigate both spatial and temporal heterogeneity of water age. Changes in wind direction lead to changes in both the average value and spatial pattern of water age, while the impact of wind speed differs in each tributary group. Water age decreases with higher inflow discharge from tributaries; however, discharge effects are less significant than that of wind. Wind speed decline, such as that induced by climate change, has negative effects on both internal and external nutrient source release, and results in water quality deterioration. Water age is proved to be an effective indicator of water exchange efficiency, which may help decision-makers to carry out integrated water management at a complex basin scale.

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Algal Blooms

Cited by 7 publications

References 133 publications

Impacts of forestry planting on primary production in upland lakes from north‐west Ireland

Impacts of forestry planting on primary production in upland lakes from north‐west Ireland

Unmanned Aerial Vehicle (UAV) assisted water sampling

Wind Effects on the Water Age in a Large Shallow Lake

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