Underwater vessel noise in a commercial and tourist bay complex in the Mexican Central Pacific
Noise generated by ship traffic is increasing around the world. Hence, there is need to effectively evaluate anthropogenic noise levels in marine habitats. In this study, the noise contribution of ships in the Santiago–Manzanillo bay complex, on the Pacific coast of central Mexico, was assessed. The...
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Universidad Autónoma de Baja California
2022
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ftdoajarticles:oai:doaj.org/article:8d37893bc9c9447e828600fd778b1cf5 2024-09-15T18:11:15+00:00 Underwater vessel noise in a commercial and tourist bay complex in the Mexican Central Pacific David A Rosales-Chapula Christian D Ortega-Ortiz Myriam Llamas-González Aramis Olivos-Ortiz Ernesto Torres-Orozco Braulio Leon-Lopez Eduardo Romero-Vivas 2022-06-01T00:00:00Z https://doi.org/10.7773/cm.y2022.3214 https://doaj.org/article/8d37893bc9c9447e828600fd778b1cf5 EN ES eng spa Universidad Autónoma de Baja California https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/3214 https://doaj.org/toc/0185-3880 https://doaj.org/toc/2395-9053 doi:10.7773/cm.y2022.3214 0185-3880 2395-9053 https://doaj.org/article/8d37893bc9c9447e828600fd778b1cf5 Ciencias Marinas, Vol 48, Iss 1 (2022) vessel noise commercial port tourist port disturbance whales Biology (General) QH301-705.5 article 2022 ftdoajarticles https://doi.org/10.7773/cm.y2022.3214 2024-08-05T17:49:54Z Noise generated by ship traffic is increasing around the world. Hence, there is need to effectively evaluate anthropogenic noise levels in marine habitats. In this study, the noise contribution of ships in the Santiago–Manzanillo bay complex, on the Pacific coast of central Mexico, was assessed. The semienclosed bay complex is one of the most important commercial ports in Mexico, and it is an area with high biological richness and tourism demand, including demand by the informal humpback whale watching industry. Bottom-fixed recording systems were deployed at the entrance to the bay, near the commercial port (Manzanillo Bay), and within the tourist area (Santiago Bay). Monthly acoustic records were obtained from September 2015 to August 2016. Boat categories confirmed by visual sightings were associated with their acoustic signals. According to the diagnostic frequency range, vessel noise was classified into noise coming from large ships (50–220 Hz) or from small vessels (290–500 Hz). Large ships were always detected at both stations, while, as expected, small vessels were more common in tourist areas. Vessel noise in the entire area ranged from 130 to 170 dB (RMS re 1 μPa) and was present up to a median of 81.8% of the time throughout the year, with higher prevalence from 1200 to 1600 hours. Marine traffic activities were constant in the area, but frequency content and sound pressure levels were not equally distributed across the bay. Therefore, it is important to consider the possible differential impacts on marine fauna inhabiting the area. Article in Journal/Newspaper Humpback Whale Directory of Open Access Journals: DOAJ Articles Ciencias Marinas 48 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English Spanish |
topic |
vessel noise commercial port tourist port disturbance whales Biology (General) QH301-705.5 |
spellingShingle |
vessel noise commercial port tourist port disturbance whales Biology (General) QH301-705.5 David A Rosales-Chapula Christian D Ortega-Ortiz Myriam Llamas-González Aramis Olivos-Ortiz Ernesto Torres-Orozco Braulio Leon-Lopez Eduardo Romero-Vivas Underwater vessel noise in a commercial and tourist bay complex in the Mexican Central Pacific |
topic_facet |
vessel noise commercial port tourist port disturbance whales Biology (General) QH301-705.5 |
description |
Noise generated by ship traffic is increasing around the world. Hence, there is need to effectively evaluate anthropogenic noise levels in marine habitats. In this study, the noise contribution of ships in the Santiago–Manzanillo bay complex, on the Pacific coast of central Mexico, was assessed. The semienclosed bay complex is one of the most important commercial ports in Mexico, and it is an area with high biological richness and tourism demand, including demand by the informal humpback whale watching industry. Bottom-fixed recording systems were deployed at the entrance to the bay, near the commercial port (Manzanillo Bay), and within the tourist area (Santiago Bay). Monthly acoustic records were obtained from September 2015 to August 2016. Boat categories confirmed by visual sightings were associated with their acoustic signals. According to the diagnostic frequency range, vessel noise was classified into noise coming from large ships (50–220 Hz) or from small vessels (290–500 Hz). Large ships were always detected at both stations, while, as expected, small vessels were more common in tourist areas. Vessel noise in the entire area ranged from 130 to 170 dB (RMS re 1 μPa) and was present up to a median of 81.8% of the time throughout the year, with higher prevalence from 1200 to 1600 hours. Marine traffic activities were constant in the area, but frequency content and sound pressure levels were not equally distributed across the bay. Therefore, it is important to consider the possible differential impacts on marine fauna inhabiting the area. |
format |
Article in Journal/Newspaper |
author |
David A Rosales-Chapula Christian D Ortega-Ortiz Myriam Llamas-González Aramis Olivos-Ortiz Ernesto Torres-Orozco Braulio Leon-Lopez Eduardo Romero-Vivas |
author_facet |
David A Rosales-Chapula Christian D Ortega-Ortiz Myriam Llamas-González Aramis Olivos-Ortiz Ernesto Torres-Orozco Braulio Leon-Lopez Eduardo Romero-Vivas |
author_sort |
David A Rosales-Chapula |
title |
Underwater vessel noise in a commercial and tourist bay complex in the Mexican Central Pacific |
title_short |
Underwater vessel noise in a commercial and tourist bay complex in the Mexican Central Pacific |
title_full |
Underwater vessel noise in a commercial and tourist bay complex in the Mexican Central Pacific |
title_fullStr |
Underwater vessel noise in a commercial and tourist bay complex in the Mexican Central Pacific |
title_full_unstemmed |
Underwater vessel noise in a commercial and tourist bay complex in the Mexican Central Pacific |
title_sort |
underwater vessel noise in a commercial and tourist bay complex in the mexican central pacific |
publisher |
Universidad Autónoma de Baja California |
publishDate |
2022 |
url |
https://doi.org/10.7773/cm.y2022.3214 https://doaj.org/article/8d37893bc9c9447e828600fd778b1cf5 |
genre |
Humpback Whale |
genre_facet |
Humpback Whale |
op_source |
Ciencias Marinas, Vol 48, Iss 1 (2022) |
op_relation |
https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/3214 https://doaj.org/toc/0185-3880 https://doaj.org/toc/2395-9053 doi:10.7773/cm.y2022.3214 0185-3880 2395-9053 https://doaj.org/article/8d37893bc9c9447e828600fd778b1cf5 |
op_doi |
https://doi.org/10.7773/cm.y2022.3214 |
container_title |
Ciencias Marinas |
container_volume |
48 |
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1810448832867074048 |