Community structure of ichthyoplankton in the NE Atlantic in spring under contrasting hydrographic conditions
Year: 2019
Type: conference-abstract
Abstract: Material and methodsThis study is based on hydrographic data and zooplankton samples collected during the CAREVA (b) and the JUREVA (c), CC and JC, respectively, carried out on board of the research vessel Cornide de Saavedra from March 15 to April 6 (the CC) and from April 15 to May 16 of 2010 (the JC), in an area extending from the mouth of the Miño river to the latitude of46.77°N (a).During the CC were sampled 129 stations and 169 during the JC At each sampling station, vertical profiles of conductivity and temperature were recorded with a SeaBird 25 CTD.Zooplankton samples were collected with a bongo net of 40 cm mouth diameter and 250 µm mesh size.Differences in larval fish assemblage (LFA) structure between the CC and the JC and between the CC and the JC in the AR and the SBB were assessed with two-way permutational multivariate ANOVA (PERMANOVA) for unbalanced designs.Cluster analysis was used to identify LFAs within each region for each cruise.The adequacy of the classification analysis was checked by superimposing cluster results on non-metric multidimensional scaling (nMDS) ordination plots generated from the same similarity matrices, The relationships between environmental variables and larval fish taxa were assessed with canonical correspondence analysis (CCA).The environmental variables considered in this study were bottom depth at each station (depth), temperature in °C at 5 m depth (sea surface temperature), salinity at 5 m depth (sea surface salinity), water column stratification and mesozooplankton biomass.
Author: Rodríguez, José MaríaM.
Language: English
Subfield: Aquatic Science
Domain: Life Sciences
SDG: Life below water
Open Access status: green
OpenAlex ID: W7027064514