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J. Mar. Sci. Eng. 2018, 6(2), 58; https://doi.org/10.3390/jmse6020058

Using Coupled Hydrodynamic Biogeochemical Models to Predict the Effects of Tidal Turbine Arrays on Phytoplankton Dynamics

1
Agri-Food and Biosciences Institute Northern Ireland, Fisheries and Aquatic Ecosystems Branch, Newforge Lane, Belfast BT9 5PX, UK
2
School of Natural and Built Environment, Queen’s University Marine Laboratory, Portaferry BT22 1PF, Northern Ireland, UK
3
Department of Marine Science, University of Otago, P.O. Box 56, Dunedin 9054, New Zealand
4
Te Ao Tūroa, Te Rūnanga o Ngāi Tahu, Dunedin 9016, New Zealand
5
School of Biology, Queen’s University Marine Laboratory, Portaferry, BT22 1PF, Northern Ireland, UK
6
Danish Hydraulic Institute (DHI), Agern Allé 5, Hørshom DK-2790, Denmark
*
Author to whom correspondence should be addressed.
Received: 3 April 2018 / Revised: 14 May 2018 / Accepted: 17 May 2018 / Published: 22 May 2018
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Abstract

The effects of large scale tidal energy device (TED) arrays on phytoplankton processes owing to the changes in hydrodynamic flows are unknown. Coupled two-dimensional biogeochemical and hydrodynamic models offer the opportunity to predict potential effects of large scale TED arrays on the local and regional phytoplankton dynamics in coastal and inshore environments. Using MIKE 21 Software by DHI (https://www.dhigroup.com), coupled two-dimensional biogeochemical and hydrodynamic models were developed with simulations including no turbines or an array of 55 turbines with four solar radiation scenarios to assess the temporal and spatial changes of phytoplankton dynamics in an idealised domain. Results suggest that the effect of TEDs on phytoplankton dynamics accounted for up to 25% of the variability in phytoplankton concentrations, most likely associated with an increased residence time in an inshore basin. However, natural variation, such as the intensity of photosynthetically active radiation, had a larger effect on phytoplankton dynamics than an array of TEDs. View Full-Text
Keywords: hydrokinetic; nutrients; irradiance; temperature; environment; transport hydrokinetic; nutrients; irradiance; temperature; environment; transport
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Schuchert, P.; Kregting, L.; Pritchard, D.; Savidge, G.; Elsäßer, B. Using Coupled Hydrodynamic Biogeochemical Models to Predict the Effects of Tidal Turbine Arrays on Phytoplankton Dynamics. J. Mar. Sci. Eng. 2018, 6, 58.

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