Latitudinal and seasonal variation in the copepods (Multicrustacea: Copepoda) of the Gulf of California based on the CORTES cruises (1985)
Abstract The Gulf of California is known for its high productivity, diversity, and unique oceanography. Based on old and recent contributions, we estimate a richness of 160 copepod species in this province. This work seeks to identify latitudinal and seasonal patterns of the copepod composition, abu...
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Carcinologia
2023-12-01
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| Series: | Nauplius |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-64972023000100223&lng=en&tlng=en |
| _version_ | 1797404399820079104 |
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| author | Karl Edward Velázquez-Ornelas Michel E. Hendrickx |
| author_facet | Karl Edward Velázquez-Ornelas Michel E. Hendrickx |
| author_sort | Karl Edward Velázquez-Ornelas |
| collection | DOAJ |
| description | Abstract The Gulf of California is known for its high productivity, diversity, and unique oceanography. Based on old and recent contributions, we estimate a richness of 160 copepod species in this province. This work seeks to identify latitudinal and seasonal patterns of the copepod composition, abundance, and diversity in the Gulf of California during 1985. Differences between four zones of the gulf (NGC, CGC, SGC, EGC) and between the cold and warm seasons were hypothesized, based on taxonomic and ecological data. Samples were collected during the CORTES cruises (1985), which also measured salinity, temperature, and dissolved oxygen at each station. We analyzed the latitudinal and seasonal variation of the copepod community with multivariate analyses (NMDS-PCA) and correlated these with the environmental data (CCA). Seventy-nine copepod species were identified, averaging 265,649 and 98,885 ind/10 m3 in the cold and warm seasons, respectively. Only 53 of these occurred in both seasons, indicating seasonal change in species composition. Composition and diversity varied latitudinally in the cold season (P < 0.05 in all comparisons but CGC vs. SGC), but not in the warm season (except NGC vs. the rest of the gulf). There was seasonal change in the composition and the abundance (P < 0.005 cold vs. warm season). Richness and diversity were negatively correlated with salinity (decreasing from the north of the gulf); the abundance and composition were mainly affected by the shift in temperature. These patterns also match the phytoplankton abundance and size structure in the gulf, probably the main factors affecting copepod distribution. |
| first_indexed | 2024-03-09T02:54:24Z |
| format | Article |
| id | doaj.art-bc73551f11d342ecbbf4f011a5d8bb9c |
| institution | Directory Open Access Journal |
| issn | 2358-2936 |
| language | English |
| last_indexed | 2024-03-09T02:54:24Z |
| publishDate | 2023-12-01 |
| publisher | Sociedade Brasileira de Carcinologia |
| record_format | Article |
| series | Nauplius |
| spelling | doaj.art-bc73551f11d342ecbbf4f011a5d8bb9c2023-12-05T07:50:45ZengSociedade Brasileira de CarcinologiaNauplius2358-29362023-12-013110.1590/2358-2936e2023027Latitudinal and seasonal variation in the copepods (Multicrustacea: Copepoda) of the Gulf of California based on the CORTES cruises (1985)Karl Edward Velázquez-Ornelashttps://orcid.org/0000-0002-6986-6844Michel E. Hendrickxhttps://orcid.org/0000-0001-9187-6080Abstract The Gulf of California is known for its high productivity, diversity, and unique oceanography. Based on old and recent contributions, we estimate a richness of 160 copepod species in this province. This work seeks to identify latitudinal and seasonal patterns of the copepod composition, abundance, and diversity in the Gulf of California during 1985. Differences between four zones of the gulf (NGC, CGC, SGC, EGC) and between the cold and warm seasons were hypothesized, based on taxonomic and ecological data. Samples were collected during the CORTES cruises (1985), which also measured salinity, temperature, and dissolved oxygen at each station. We analyzed the latitudinal and seasonal variation of the copepod community with multivariate analyses (NMDS-PCA) and correlated these with the environmental data (CCA). Seventy-nine copepod species were identified, averaging 265,649 and 98,885 ind/10 m3 in the cold and warm seasons, respectively. Only 53 of these occurred in both seasons, indicating seasonal change in species composition. Composition and diversity varied latitudinally in the cold season (P < 0.05 in all comparisons but CGC vs. SGC), but not in the warm season (except NGC vs. the rest of the gulf). There was seasonal change in the composition and the abundance (P < 0.005 cold vs. warm season). Richness and diversity were negatively correlated with salinity (decreasing from the north of the gulf); the abundance and composition were mainly affected by the shift in temperature. These patterns also match the phytoplankton abundance and size structure in the gulf, probably the main factors affecting copepod distribution.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-64972023000100223&lng=en&tlng=enEarly oceanographyEl Niñoepipelagic zooplanktonmarine diversitymultivariate analysistaxonomic compositionzooplankton abundance |
| spellingShingle | Karl Edward Velázquez-Ornelas Michel E. Hendrickx Latitudinal and seasonal variation in the copepods (Multicrustacea: Copepoda) of the Gulf of California based on the CORTES cruises (1985) Nauplius Early oceanography El Niño epipelagic zooplankton marine diversity multivariate analysis taxonomic composition zooplankton abundance |
| title | Latitudinal and seasonal variation in the copepods (Multicrustacea: Copepoda) of the Gulf of California based on the CORTES cruises (1985) |
| title_full | Latitudinal and seasonal variation in the copepods (Multicrustacea: Copepoda) of the Gulf of California based on the CORTES cruises (1985) |
| title_fullStr | Latitudinal and seasonal variation in the copepods (Multicrustacea: Copepoda) of the Gulf of California based on the CORTES cruises (1985) |
| title_full_unstemmed | Latitudinal and seasonal variation in the copepods (Multicrustacea: Copepoda) of the Gulf of California based on the CORTES cruises (1985) |
| title_short | Latitudinal and seasonal variation in the copepods (Multicrustacea: Copepoda) of the Gulf of California based on the CORTES cruises (1985) |
| title_sort | latitudinal and seasonal variation in the copepods multicrustacea copepoda of the gulf of california based on the cortes cruises 1985 |
| topic | Early oceanography El Niño epipelagic zooplankton marine diversity multivariate analysis taxonomic composition zooplankton abundance |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-64972023000100223&lng=en&tlng=en |
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