Variation of the bathymetric distribution patterns of the macrobenthic fauna on the continental shelf off Jalisco and Colima, Mexico
The abundance, in terms of number of individuals and biomass, of the invertebrate communities in one sector of the soft-bottom continental shelf off Jalisco and Colima (Mexico) was analyzed. The cruises were carried out during three hydroclimatic seasons, as defined by the surface current...
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Iniversidad Autónoma de Baja California
1998
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| Sarrera elektronikoa: | https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/752 |
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oai:cienciasmarinas.com.mx:article-7522019-05-17T19:17:00Z Variation of the bathymetric distribution patterns of the macrobenthic fauna on the continental shelf off Jalisco and Colima, Mexico Variación de los patrones de distribución batimétrica de la fauna macrobentónica en la plataforma continental de Jalisco y Colima, México Godínez-Domínguez, E González-Sansón, G benthic communities bathymetric distribution biomass comunidades bentónicas distribución batimétrica biomasa The abundance, in terms of number of individuals and biomass, of the invertebrate communities in one sector of the soft-bottom continental shelf off Jalisco and Colima (Mexico) was analyzed. The cruises were carried out during three hydroclimatic seasons, as defined by the surface current patterns. Trawl samples were taken from seven sites along the coastline at four bathymetric levels (20, 40, 60 and 80 m), Abundance in the different bathymetric strata was significantly different, but the overall abundance did not vary significantly between seasons. Two bathymetric distribution patterns were found: the first, during the cruises DEM 1 and DEM II, with warm water, presents the greatest abundance at 60 m; the second, during DEM III, with cold water, a low leve1 of dissolved oxygen and the thermocline close to the surface, presents the greatest abundance at 20 m (biomass) and 40 m (number of individuals). The temperature fluctuation in the depth of maximum abundance during the three cruises was 19-2lºC, which suggests a narrow range of thermal preferente in the demersal invertebrate community. Se analizó la abundancia en biomasa y número de individuos de la fauna de invertebrados de fondos blandos de una porción de la plataforma continental del estado de Jalisco y Colima (México). Se realizaron tres cruceros durante las tres estaciones hidroclimáticas existentes en el área de estudio, determinadas de acuerdo con los patrones de circulación marina. Se seleccionaron siete sitios de muestreo a lo largo de la costa y cuatro estratos batimétricos (20, 40, 60 y 80 m). Las muestras se recolectaron con redes de arrastre tipo camaronero. Se determinaron diferencias significativas en la distribución batimétrica de la abundancia en los tres cruceros. Las diferencias de abundancias entre cruceros no fueron significativas. Se encontraron dos patrones de distribución batimétrica de la abundancia de la comunidad béntica: el primero, con una masa de agua cálida, durante los cruceros DEM 1 y DEM II, concentra la abundancia a los 60 m; y el segundo, con condiciones de baja temperatura, abatimiento de los niveles de oxígeno disuelto y la termoclina más próxima a la superficie, durante DEM III, concentra la mayor biomasa a los 20 m y el mayor número de individuos a los 40 m. El intervalo de temperatura a la profundidad de máxima abundancia fluctuó entre 19°C y 21°C en los tres cruceros, lo que indica una estrecha preferencia térmica de la asociación de especies de invertebrados bentónicos. Iniversidad Autónoma de Baja California 1998-03-06 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Artículo Arbitrado application/pdf https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/752 10.7773/cm.v24i3.752 Ciencias Marinas; Vol. 24 No. 3 (1998); 337-351 Ciencias Marinas; Vol. 24 Núm. 3 (1998); 337-351 2395-9053 0185-3880 eng https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/752/679 |
| institution |
Ciencias Marinas |
| collection |
OJS |
| language |
eng |
| format |
Online |
| author |
Godínez-Domínguez, E González-Sansón, G |
| spellingShingle |
Godínez-Domínguez, E González-Sansón, G Variation of the bathymetric distribution patterns of the macrobenthic fauna on the continental shelf off Jalisco and Colima, Mexico |
| author_facet |
Godínez-Domínguez, E González-Sansón, G |
| author_sort |
Godínez-Domínguez, E |
| title |
Variation of the bathymetric distribution patterns of the macrobenthic fauna on the continental shelf off Jalisco and Colima, Mexico |
| title_short |
Variation of the bathymetric distribution patterns of the macrobenthic fauna on the continental shelf off Jalisco and Colima, Mexico |
| title_full |
Variation of the bathymetric distribution patterns of the macrobenthic fauna on the continental shelf off Jalisco and Colima, Mexico |
| title_fullStr |
Variation of the bathymetric distribution patterns of the macrobenthic fauna on the continental shelf off Jalisco and Colima, Mexico |
| title_full_unstemmed |
Variation of the bathymetric distribution patterns of the macrobenthic fauna on the continental shelf off Jalisco and Colima, Mexico |
| title_sort |
variation of the bathymetric distribution patterns of the macrobenthic fauna on the continental shelf off jalisco and colima, mexico |
| description |
The abundance, in terms of number of individuals and biomass, of the invertebrate communities in one sector of the soft-bottom continental shelf off Jalisco and Colima (Mexico) was analyzed. The cruises were carried out during three hydroclimatic seasons, as defined by the surface current patterns. Trawl samples were taken from seven sites along the coastline at four bathymetric levels (20, 40, 60 and 80 m), Abundance in the different bathymetric strata was significantly different, but the overall abundance did not vary significantly between seasons. Two bathymetric distribution patterns were found: the first, during the cruises DEM 1 and DEM II, with warm water, presents the greatest abundance at 60 m; the second, during DEM III, with cold water, a low leve1 of dissolved oxygen and the thermocline close to the surface, presents the greatest abundance at 20 m (biomass) and 40 m (number of individuals). The temperature fluctuation in the depth of maximum abundance during the three cruises was 19-2lºC, which suggests a narrow range of thermal preferente in the demersal invertebrate community. |
| publisher |
Iniversidad Autónoma de Baja California |
| publishDate |
1998 |
| url |
https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/752 |
| _version_ |
1715724006626164736 |
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