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Effects of Pile Driving on the Residency and Movement of Tagged Reef Fish

View Article: PubMed Central - PubMed

ABSTRACT

The potential effects of pile driving on fish populations and commercial fisheries have received significant attention given the prevalence of pile driving occurring in coastal habitats throughout the world. Behavioral impacts of sound generated from these activities on fish typically have a greater area of influence than physical injury, and may therefore adversely affect a greater portion of the local population. This study used acoustic telemetry to assess the movement, residency, and survival of 15 sheepshead (Archosargus probatocephalus) and 10 grey snapper (Lutjanus griseus) in Port Canaveral, Florida, USA, in response to 35 days of pile driving at a wharf complex. No obvious signs of mortality or injury to tagged fish were evident from the data. Received sound pressure levels from pile strikes on the interior of the wharf, where reef fish primarily occur, were on average 152–157 dB re 1 μPa (peak). No significant decrease in sheepshead daytime residency was observed during pile driving within the central portion of the wharf and area of highest sound exposure, and no major indicators of displacement from the exposure wharf with the onset of pile driving were observed. There was evidence of potential displacement from the exposure wharf that coincided with the start of pile driving observed for 2 out of 4 grey snapper, along with a decrease in daytime residency for a subset of this species with high site fidelity prior to the event. Results indicate that snapper may be more likely to depart an area of pile driving disturbance more readily than sheepshead, but were less at risk for behavioral impact given the lower site fidelity of this species.

No MeSH data available.


Related in: MedlinePlus

Number of tagged individual sheepshead and snapper detected per day at the exposure and control wharfs and corresponding individual receivers during the study period.Red lines represent sheepshead, blue lines represent snapper. Shading indicates the period of pile driving. A) Number of fish detected per day at the exposure wharf (EW) and the control wharf (CW). B) Number of fish detected per day at individual receivers on the exposure wharf. C) Number of fish detected per day at individual receivers on the control wharf.
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pone.0163638.g003: Number of tagged individual sheepshead and snapper detected per day at the exposure and control wharfs and corresponding individual receivers during the study period.Red lines represent sheepshead, blue lines represent snapper. Shading indicates the period of pile driving. A) Number of fish detected per day at the exposure wharf (EW) and the control wharf (CW). B) Number of fish detected per day at individual receivers on the exposure wharf. C) Number of fish detected per day at individual receivers on the control wharf.

Mentions: In the exposure basin, the mean number of unique sheepshead detected per day on the exposure wharf remained fairly consistent at 10.1 before pile driving, with 9.9 and 9.5 individuals per day detected during and after pile driving, respectively. The number of sheepshead detected per day for each quarter of pile driving at the wharf in the exposure basin was also relatively stable, with overall values of 10.6, 9.4, 9.4, and 10.0 fish per day over time (Fig 3). During pile driving, the highest mean number of unique sheepshead detected per day was on receiver E5 (closest to the release site) followed by E4 located in the center of the wharf. The mean number of unique grey snapper detected per day on the exposure wharf decreased from 5.6 before pile driving to 1.9 during, followed by 1.8 after pile driving. The average number of snapper detected per day at the exposure wharf for each quarter of pile driving was 2.3, 2.0, 1.7, and 1.4 fish per day over time. As with sheepshead, the highest number of snapper detected per day for the duration of the study was on receiver E5 followed by E4 located in the center of the wharf.


Effects of Pile Driving on the Residency and Movement of Tagged Reef Fish
Number of tagged individual sheepshead and snapper detected per day at the exposure and control wharfs and corresponding individual receivers during the study period.Red lines represent sheepshead, blue lines represent snapper. Shading indicates the period of pile driving. A) Number of fish detected per day at the exposure wharf (EW) and the control wharf (CW). B) Number of fish detected per day at individual receivers on the exposure wharf. C) Number of fish detected per day at individual receivers on the control wharf.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC5120787&req=5

pone.0163638.g003: Number of tagged individual sheepshead and snapper detected per day at the exposure and control wharfs and corresponding individual receivers during the study period.Red lines represent sheepshead, blue lines represent snapper. Shading indicates the period of pile driving. A) Number of fish detected per day at the exposure wharf (EW) and the control wharf (CW). B) Number of fish detected per day at individual receivers on the exposure wharf. C) Number of fish detected per day at individual receivers on the control wharf.
Mentions: In the exposure basin, the mean number of unique sheepshead detected per day on the exposure wharf remained fairly consistent at 10.1 before pile driving, with 9.9 and 9.5 individuals per day detected during and after pile driving, respectively. The number of sheepshead detected per day for each quarter of pile driving at the wharf in the exposure basin was also relatively stable, with overall values of 10.6, 9.4, 9.4, and 10.0 fish per day over time (Fig 3). During pile driving, the highest mean number of unique sheepshead detected per day was on receiver E5 (closest to the release site) followed by E4 located in the center of the wharf. The mean number of unique grey snapper detected per day on the exposure wharf decreased from 5.6 before pile driving to 1.9 during, followed by 1.8 after pile driving. The average number of snapper detected per day at the exposure wharf for each quarter of pile driving was 2.3, 2.0, 1.7, and 1.4 fish per day over time. As with sheepshead, the highest number of snapper detected per day for the duration of the study was on receiver E5 followed by E4 located in the center of the wharf.

View Article: PubMed Central - PubMed

ABSTRACT

The potential effects of pile driving on fish populations and commercial fisheries have received significant attention given the prevalence of pile driving occurring in coastal habitats throughout the world. Behavioral impacts of sound generated from these activities on fish typically have a greater area of influence than physical injury, and may therefore adversely affect a greater portion of the local population. This study used acoustic telemetry to assess the movement, residency, and survival of 15 sheepshead (Archosargus probatocephalus) and 10 grey snapper (Lutjanus griseus) in Port Canaveral, Florida, USA, in response to 35 days of pile driving at a wharf complex. No obvious signs of mortality or injury to tagged fish were evident from the data. Received sound pressure levels from pile strikes on the interior of the wharf, where reef fish primarily occur, were on average 152–157 dB re 1 μPa (peak). No significant decrease in sheepshead daytime residency was observed during pile driving within the central portion of the wharf and area of highest sound exposure, and no major indicators of displacement from the exposure wharf with the onset of pile driving were observed. There was evidence of potential displacement from the exposure wharf that coincided with the start of pile driving observed for 2 out of 4 grey snapper, along with a decrease in daytime residency for a subset of this species with high site fidelity prior to the event. Results indicate that snapper may be more likely to depart an area of pile driving disturbance more readily than sheepshead, but were less at risk for behavioral impact given the lower site fidelity of this species.

No MeSH data available.


Related in: MedlinePlus