Changes in the macrobenthos of a sandy beach during "El Niño" 1997-98 in the Malaga Bay, Colombian Pacific
Changes in the macrobenthic community of a sandy-beach were studied during the "El Niño" 1997-98 event at the Malaga Bay, in the central Colombian Pacific. Species composition was recorded monthly from October 1997 to May 1998 at four tidal levels, and species diversity (Shannon-Wienner,...
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| Format: | Article |
| Language: | English |
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Universidad Autónoma de Baja California
2002-03-01
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| Series: | Ciencias Marinas |
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| Online Access: | https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/209 |
| _version_ | 1797279326047043584 |
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| author | JM Riascos |
| author_facet | JM Riascos |
| author_sort | JM Riascos |
| collection | DOAJ |
| description |
Changes in the macrobenthic community of a sandy-beach were studied during the "El Niño" 1997-98 event at the Malaga Bay, in the central Colombian Pacific. Species composition was recorded monthly from October 1997 to May 1998 at four tidal levels, and species diversity (Shannon-Wienner, H') and richness were calculated. In order to analyze community structure changes, multivariate ordinations were performed (non-metric multidimensional scaling) and species responsible for the observed temporal changes were discriminated using a dissimilarity index. Differences in species diversity and richness were related to a seriation pattern in vertical species distribution . A common pattern of structure change was found at four tidal levels on the beach. Population reduction or increase of some species and vertical modifications of the spatial distribution patterns were the main source of temporal community change.
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| first_indexed | 2024-03-07T16:24:40Z |
| format | Article |
| id | doaj.art-6d9b9d8cf0ce42308c3367757b90fd49 |
| institution | Directory Open Access Journal |
| issn | 0185-3880 2395-9053 |
| language | English |
| last_indexed | 2024-03-07T16:24:40Z |
| publishDate | 2002-03-01 |
| publisher | Universidad Autónoma de Baja California |
| record_format | Article |
| series | Ciencias Marinas |
| spelling | doaj.art-6d9b9d8cf0ce42308c3367757b90fd492024-03-03T19:27:04ZengUniversidad Autónoma de Baja CaliforniaCiencias Marinas0185-38802395-90532002-03-0128110.7773/cm.v28i1.209Changes in the macrobenthos of a sandy beach during "El Niño" 1997-98 in the Malaga Bay, Colombian PacificJM Riascos0Instituto Vallecaucano de Investigaciones Científicas Changes in the macrobenthic community of a sandy-beach were studied during the "El Niño" 1997-98 event at the Malaga Bay, in the central Colombian Pacific. Species composition was recorded monthly from October 1997 to May 1998 at four tidal levels, and species diversity (Shannon-Wienner, H') and richness were calculated. In order to analyze community structure changes, multivariate ordinations were performed (non-metric multidimensional scaling) and species responsible for the observed temporal changes were discriminated using a dissimilarity index. Differences in species diversity and richness were related to a seriation pattern in vertical species distribution . A common pattern of structure change was found at four tidal levels on the beach. Population reduction or increase of some species and vertical modifications of the spatial distribution patterns were the main source of temporal community change. https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/209Communitiesbenthosdiversitydistributionenvironmental changesColombia |
| spellingShingle | JM Riascos Changes in the macrobenthos of a sandy beach during "El Niño" 1997-98 in the Malaga Bay, Colombian Pacific Ciencias Marinas Communities benthos diversity distribution environmental changes Colombia |
| title | Changes in the macrobenthos of a sandy beach during "El Niño" 1997-98 in the Malaga Bay, Colombian Pacific |
| title_full | Changes in the macrobenthos of a sandy beach during "El Niño" 1997-98 in the Malaga Bay, Colombian Pacific |
| title_fullStr | Changes in the macrobenthos of a sandy beach during "El Niño" 1997-98 in the Malaga Bay, Colombian Pacific |
| title_full_unstemmed | Changes in the macrobenthos of a sandy beach during "El Niño" 1997-98 in the Malaga Bay, Colombian Pacific |
| title_short | Changes in the macrobenthos of a sandy beach during "El Niño" 1997-98 in the Malaga Bay, Colombian Pacific |
| title_sort | changes in the macrobenthos of a sandy beach during el nino 1997 98 in the malaga bay colombian pacific |
| topic | Communities benthos diversity distribution environmental changes Colombia |
| url | https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/209 |
| work_keys_str_mv | AT jmriascos changesinthemacrobenthosofasandybeachduringelnino199798inthemalagabaycolombianpacific |