Spatial variability of zooplankton community structure in Colombian Caribbean waters during two seasons
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| Formato: | Online |
| Idioma: | eng |
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Universidad de Costa Rica
2018
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| Acceso en línea: | https://revistas.ucr.ac.cr/index.php/rbt/article/view/33401 |
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RBT33401 |
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RBT334012022-06-09T18:14:13Z Spatial variability of zooplankton community structure in Colombian Caribbean waters during two seasons Medellín-Mora, Johanna Escribano, Rubén Schneider, Wolfgang Correa-Ramírez, Marco Campos, Nestor size spectrum mesoescale stratification distribution mesozooplankton. Zooplankton is an important component to understand oceanographic dynamics, they are considered good indicators of environmental variability, since most species are short-lived they can be tight coupling of climate and population dynamics, and some taxa are sensitive to variables such as temperature, quality and quantity of food, oxygenation and stratification. In the Colombian Caribbean two oceanographic cruises were carried out, in order to characterize and analyze the biodiversity of the continental margin, for the periods May-June 2008 and November-December 2009. The objective of this study was to determine which oceanographic variable was the most important in the distribution of zooplankton in the oceanic waters, and how the variables structure the community. In each cruise, zooplankton samples were obtained by vertical hauls with a 1 m2 diameter conical net (200 μm mesh size). The zooplankton community structure was studied by automated image analysis (ZooImage), which combined with abundance data, allowed to calculate the slope of size spectrum, and diversity indexes of taxa and sizes. The environmental variables included temperature, salinity, oxygen and chlorophyll a of the water column, and were used to calculate the stratification with the Brunt-Vaiisala frequency; this information was complemented by satellite images of temperature, surface chlorophyll, geostrophic currents and sea level, obtained from MODIS and AQUA products. The association between environmental variables and the zooplankton community structure was determined using Spearman’s correlation ranges with the Bioenv routine and a stepwise regression model, and Principal component analysis (PCA). Our results showed spatial and temporal patterns in the oceanographic conditions of the study area, such as upwelling in the Northeast region, strong stratification in the Southwest, and mesoscale activity. The abundance of zooplankton exhibited differences between the two climatic seasons and zones. Temporal differences were also evident in the size and diversity of taxa (ANOVA 2-way p <0.05). These changes were related to the moderate upwelling and the activity of mesoscale eddies. Cyclonic and anticyclonic eddies of variable size can either transport or retain zooplankton over cross-shelf and oceanic areas, thus modifying the taxonomic structure of the community. According to the Bioenv analysis, the main variables that explained the abundance and composition of zooplankton were sea level and chlorophyll a (Spearman correlation = 0.49). The stepwise regression showed that stratification, oxygen and chlorophyll a were the most important predictors of zooplankton abundance and size. Rev. Biol. Trop. 66(2): 688-708. Epub 2018 June 01. Universidad de Costa Rica 2018-06-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Article application/pdf text/html https://revistas.ucr.ac.cr/index.php/rbt/article/view/33401 10.15517/rbt.v66i2.33401 Revista de Biología Tropical; Vol. 66 No. 2 (2018): Volume 66 – Regular number 2 – June 2018; 688–708 Revista de Biología Tropical; Vol. 66 Núm. 2 (2018): Volumen 66 – Número regular 2 – Junio 2018; 688–708 Revista Biología Tropical; Vol. 66 N.º 2 (2018): Volume 66 – Regular number 2 – June 2018; 688–708 2215-2075 0034-7744 10.15517/rbt.v66i2 eng https://revistas.ucr.ac.cr/index.php/rbt/article/view/33401/32874 https://revistas.ucr.ac.cr/index.php/rbt/article/view/33401/32910 Copyright (c) 2018 Revista de Biología Tropical http://creativecommons.org/licenses/by/4.0 |
| institution |
Universidad de Costa Rica |
| collection |
Revista de Biología Tropical |
| language |
eng |
| format |
Online |
| author |
Medellín-Mora, Johanna Escribano, Rubén Schneider, Wolfgang Correa-Ramírez, Marco Campos, Nestor |
| spellingShingle |
Medellín-Mora, Johanna Escribano, Rubén Schneider, Wolfgang Correa-Ramírez, Marco Campos, Nestor Spatial variability of zooplankton community structure in Colombian Caribbean waters during two seasons |
| author_facet |
Medellín-Mora, Johanna Escribano, Rubén Schneider, Wolfgang Correa-Ramírez, Marco Campos, Nestor |
| author_sort |
Medellín-Mora, Johanna |
| title |
Spatial variability of zooplankton community structure in Colombian Caribbean waters during two seasons |
| title_short |
Spatial variability of zooplankton community structure in Colombian Caribbean waters during two seasons |
| title_full |
Spatial variability of zooplankton community structure in Colombian Caribbean waters during two seasons |
| title_fullStr |
Spatial variability of zooplankton community structure in Colombian Caribbean waters during two seasons |
| title_full_unstemmed |
Spatial variability of zooplankton community structure in Colombian Caribbean waters during two seasons |
| title_sort |
spatial variability of zooplankton community structure in colombian caribbean waters during two seasons |
| publisher |
Universidad de Costa Rica |
| publishDate |
2018 |
| url |
https://revistas.ucr.ac.cr/index.php/rbt/article/view/33401 |
| work_keys_str_mv |
AT medellinmorajohanna spatialvariabilityofzooplanktoncommunitystructureincolombiancaribbeanwatersduringtwoseasons AT escribanoruben spatialvariabilityofzooplanktoncommunitystructureincolombiancaribbeanwatersduringtwoseasons AT schneiderwolfgang spatialvariabilityofzooplanktoncommunitystructureincolombiancaribbeanwatersduringtwoseasons AT correaramirezmarco spatialvariabilityofzooplanktoncommunitystructureincolombiancaribbeanwatersduringtwoseasons AT camposnestor spatialvariabilityofzooplanktoncommunitystructureincolombiancaribbeanwatersduringtwoseasons |
| _version_ |
1810115229199106048 |