Hydrokinetic Turbine Effects on Fish Swimming Behaviour

Hammar, Lena Marmstål; Andersson, Sandra; Eggertsen, Linda; Haglund, Johan; Gullström, Martin; Ehnberg, Jimmy; Molander, Sverker

doi:10.1371/journal.pone.0084141

Cited by 58 publications

(72 citation statements)

References 50 publications

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“…Two GoPro R HERO2 cameras mounted on a calibrated frame with 60 cm base separation were used for data collection. Specific calibration (Hammar et al, 2013) and additional methodological details can be found in previous investigations. Once positioned, the cameras were left to record for 50 min of continuous filming, with an additional 5 min at the start of all videos to exclude disturbance effects.…”

Section: Camera Surveys and Assessment Of Fish Assemblagesmentioning

confidence: 99%

Habitat Connectivity of Fish in Temperate Shallow-Water Seascapes

2018

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Movements of organisms comprise a fundamental aspect of coastal habitat connectivity. Determining the distribution and co-existence of habitat specialists and generalists in shallow-water seascapes leads to a better understanding of the strength of connectivity-driven community patterns in coastal areas. In this study, unbaited Remote Underwater Video (RUV) systems were used to examine habitat usage and connectivity of fish within six shallow-water coastal seascapes on the Swedish west coast. Within each seascape, video sampling was conducted at three different shallow-water habitats: seagrass meadows, rock-macroalgae and unvegetated areas, in June 2014. Comparative analyses showed that the shallow-water fish community was similar in adjacent habitats within a seascape, though abundances of fish were higher within the structurally complex habitats. All habitats were dominated by juveniles, highlighting the importance of the coastal seascape for early fish life stages. The findings demonstrate that adjacent shallow-water habitats in temperate coastal waters are linked through similar species utilization and that the coastal matrix could be regarded in terms of a seascape nursery for fish. The study highlights the importance of considering shallow-water seascape connectivity in coastal conservation planning and management.

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Section: Camera Surveys and Assessment Of Fish Assemblagesmentioning

confidence: 99%

Habitat Connectivity of Fish in Temperate Shallow-Water Seascapes

2018

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“…For example, video monitoring has indicated that benthic reef fish were able to avoid a vertical-axis, cross-flow HK turbine even when in close proximity to it (Hammar et al 2013). In fact, no turbine blade collisions were observed by Hammar et al (2013).…”

Section: Comparison Of Hk Turbine Typesmentioning

confidence: 99%

Evaluation of Behavior and Survival of Fish Exposed to an Axial‐Flow Hydrokinetic Turbine

Amaral¹,

Bevelhimer

Cada

et al. 2015

N American J Fish Manag

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Previous studies have evaluated fish injury and mortality at hydrokinetic (HK) turbines, but because these studies focused on the impacts of these turbines in situ they were unable to evaluate fish responses to controlled environmental characteristics (e.g., current velocity and light or dark conditions). In this study, we used juvenile hybrid Striped Bass (HSB; Striped Bass Morone saxatilis × White Bass M. chrysops; N = 620), Rainbow Trout Oncorhynchus mykiss (N = 3,719), and White Sturgeon Acipenser transmontanus (N = 294) in a series of laboratory experiments to (1) evaluate the ability of fish to avoid entrainment through an axial‐flow HK turbine, (2) evaluate fish injury and survival associated with turbine entrainment, and (3) compare the effects of different HK turbines on fish. We found that the probability of turbine entrainment was species dependent and highest for HSB. Across species, current velocity influenced entrainment probability. Among entrained fish, observed survival rates were generally >0.95. The probability of injury for surviving entrained fish only differed from that for nonentrained fish for Rainbow Trout and in general was not >0.20. The probability of injury following entrainment was greater only for HSB, although there were no differences in injury rates between fish that were turbine entrained and those that were not, suggesting that injuries were not turbine related. Taking turbine entrainment, survival, and injury estimates together allowed us to estimate the probability of a randomly selected fish in a population proximate to an HK turbine surviving passage or remaining uninjured after passage. For species and current velocities for which there was a significant effect due to entrainment, we estimated, for instance, that HSB had a survival probability of 0.95 and that Rainbow Trout and White Sturgeon had a >0.99 probability of survival. Similarly, by combining these estimates with those from previous studies, we derived total passage survival probabilities >0.90 but generally approaching 1.00 across different HK turbine types, fish species, and fish lengths.Received May 14, 2014; accepted October 23, 2014

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“…It was seen that the new turbine operates in average 1117h and generates 420 kWh in a year whereas the rotating turbine just operates 41h and generates 80kWh. Due to their small size hydrokinetic turbines do not harm fish, which is a large advantage compared to the run-off river barrage power plants [3,10].…”

Section: Resultsmentioning

confidence: 99%

“…Turbines with a variable immersion depth increase the number of exploitable spots within a river, due to the adaptability on lower water levels. Furthermore, experiments have shown that single hydrokinetic turbines do not harm fish, due to their slow motion and a construction which makes it for the fish possible to easily pass by [3].…”

Section: Introductionmentioning

confidence: 99%

Hydrokinetic Micro-Power Generation in Small Rivers - a New Approach

Norta

Ramanathan²,

Sachau

et al. 2024

RE&PQJ

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Abstract. The so called German electrical "Energiewende" is mainly based on the installation of solar photovoltaic and wind energy converters as the main new renewable European generation resources. The third renewable energy resource, the hydropower has been already developed within the last decades and grew not significantly in the last years. Since some years the development of smaller hydrokinetic turbines increased. The smaller size of some hydrokinetic turbines enables new, unused sites to be harnessed in smaller rivers. The paper deals with the key specifications of hydrokinetic turbines and their influence on a villages' energy supply. It introduces the concept of a turbine with variable immersion depths to exploit also locations with a varying water level. Based on historical hydrological data a propeller and oscillating hydrofoil type of hydrokinetic turbine are compared, it was found that the variable immersion depths increases the energy harvest. Furthermore, it is shown that in a generation portfolio of hydrokinetic and solar power plants an average Luxembourgish household theoretically renewable supplied has to exchange less energy with the power grid, the higher its share of hydrokinetic generation is.

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Hydrokinetic Turbine Effects on Fish Swimming Behaviour

Cited by 58 publications

References 50 publications

Habitat Connectivity of Fish in Temperate Shallow-Water Seascapes

Habitat Connectivity of Fish in Temperate Shallow-Water Seascapes

Evaluation of Behavior and Survival of Fish Exposed to an Axial‐Flow Hydrokinetic Turbine

Hydrokinetic Micro-Power Generation in Small Rivers - a New Approach

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