Salpida species off the Catalan coast (NW Mediterranean) during summer 2003 and 2004. Neustonic and epipelagic planktonic sampling

Elena Guerrero1, Sergi Castellana2, Josep Maria Gili2, Ana Sabatés3, Katia Cezón4

1 Marine Sciences Institute (ICM-CSIC), 08003, Barcelona, Spain; 2 Institut de Ciències del Mar (ICM-CSIC), Barcelona, Spain; 3 Institut de Ciències del Mar (ICM-CSIC), Passeig Marítim de la Barceloneta, 37-49, E-08003, Barcelona, Spain; 4 

Corresponding author(s): Elena Guerrero (eguerrero@icm.csic.es)Sergi CastellanaJosep Maria Gili (gili@icm.csic.es)Ana Sabatés (anas@icm.csic.es)

Received {date}; Revised {date}; Accepted {date}; Published {date}

Citation: Combination of authors, year of data paper publication (in parentheses), Title, Journal Name, Volume, Issue number (in parentheses), and doi of the data paper.

Resource Citation

Guerrero E, Castellana S, Gili J M, Sabatés A (2023). Salpida species off the Catalan coast (NW Mediterranean) during summer 2003 and 2004. Neustonic and epipelagic planktonic sampling. Version 2.0. Institut de Ciències del Mar (CSIC). Samplingevent dataset. https://doi.org/10.15470/uminpm

Abstract

During July 2003 (extremely warm summer), June and July 2004 (average summer) three oceanographic cruises of mesoscale dimensions were carried out along the Catalan coast in the NW Mediterranean to study different zooplankton groups, in this case the Salpida species.
Two kind of sampling were carried out: 1) in the neustonic layer (0-1.5 m depth) using a neustonic net of 800 μm mesh size (mouth: 0.5 m x 1 m) and 2) in the first 200 m of the water column, using a Bongo net with 300 μm mesh size (mouth: 60 cm of diameter). During each survey, 65-66 stations were sampled on transects perpendicular to the shoreline, covering the continental shelf and the slope.
This dataset includes all the species and life stages of the Order Salpida found during the three surveys. The data are presented as abundance: number of individuals standardized per 1000 m3 of filtered seawater by the net.
The objective of this study was to know the species of Salpida, their spatial distribution and abundance, inhabiting both the superficial layer and the water column during summer conditions of two consecutive years with very different temperature conditions: the exceptionally warm summer of 2003 and the summer of 2004 with temperatures near the climatic average for the period 2000–2012 (Sparnocchia et al., 2006; Maynou et al., 2014). Moreover, the covered study area, the Catalan coast, is a heterogeneous area of the Mediterranean Sea, which provides different environmental gradients in bathymetry, temperature, salinity and primary production.

Keywords: Samplingevent, Salpida, zooplankton, gelatinous zooplankton, Tunicates, Salpa, Thalia, Soestia, salps, Mediterranean Sea, neuston, plankton, summer.

Project details

Project title: Study of the effects of global change on marine communities in the western Mediterranean MICYT (REN2002-01339/MAR)
Personnel: Ana Sabatés
Funding: This study was supported by the European Union Project VECTORS (FP7 OCEAN-2010, 266445; Food, Agriculture and Fisheries, Biotechnology) and by the Spanish Ministry of Science and Technology (project REN 2002-01339/MAR).

Data published through GBIF: https://ipt.gbif.es/resource?r=icm-salpida

Taxonomic coverage

General taxonomic coverage description: All the species and life stages (oozoid, blastozoid and embryo) of the Order Salpida found during three oceanographic surveys, of mesoscale dimensions, carried out in July 2003 (an extremely warm summer), and in June and July 2004 (an average temperature summer).
Taxonomic ranks
Kingdom: Animalia
Phylum: Chordata
Subphylum: Tunicata
Class: Thaliacea
Order: Salpida
Family: Salpidae
Genus: Thalia
Species: Salpa maxima, Thalia democratica, Soestia zonaria

Spatial coverage

General spatial coverage: The Catalan coast in the NW Mediterranean.
Coordinates: 90°0'0''S and 90°0'0''N Latitude; 180°0'0''W and 180°0'0''E Longitude 

Temporal coverage: July 18, 2007 - July 25, 2007

Temporal coverage: July 21, 2004 - July 29, 2004

Temporal coverage: June 23, 2004 - June 30, 2004

Natural collections description

Collection name: SalpidaCACO
Specimen preservation method: Formalin

Methods

Method step description: Zooplankton sampling, samples fixed immediately after collection in 5% formaldehyde buffered with sodium tetraborate. In the laboratory, all individuals of Salpida species were counted and identified to species level and also differentiated into their life stages (oozoid, bastozooid and embryo) using a stereomicroscope.
Study extent description: The study was conducted along the Catalan coast in the NW Mediterranean.
Sampling description: Three oceanographic cruises were conducted during summer of two consecutive years: 18–25 July 2003, 23-30 June 2004 and 21–29 July 2004. During each survey, 65-66 stations were sampled on transects perpendicular to the shoreline, over the continental shelf and slope. Stations on each transect were 14 km apart, while the distance between transects was 18.5 km.
Zooplankton was sampled both near surface, in the neustonic layer (0-1.5 m depth), and in the first 200 m of the water column. In the first case a Neustonic net with 800 μm mesh size (mouth: 0.5 m x 1 m) was used while in the second one was a Bongo net with 60 cm mouth diameters and 300 μm mesh size. Zooplankton tows were carried out during day and night. Ship speed during tows was two knots. Neuston tows were horizontal while Bongo ones were oblique from a maximum depth of 200 m to the surface (or from 5 m above the bottom to the surface at stations shallower than 200 m). The volume of water filtered by the nets was estimated using a flowmeter suspended in the centre of each net mouth.
Zooplankton samples were fixed immediately after collection in 5% formaldehyde buffered with sodium tetraborate. In the laboratory, all individuals of Salpida species were counted and identified to species level and also differentiated into their life stages (oozoid, bastozooid and embryo) using a stereomicroscope.

Datasets

Dataset description
Object name: Darwin Core Archive Salpida species off the Catalan coast (NW Mediterranean) during summer 2003 and 2004. Neustonic and epipelagic planktonic sampling
Character encoding: UTF-8
Format name: Darwin Core Archive format
Format version: 1.0
Distribution: https://ipt.gbif.es/archive.do?r=icm-salpida
Publication date of data: 2023-07-28
Language: English
Licences of use: Creative Commons Attribution Non Commercial (CC-BY-NC 4.0) License

Metadata language: English
Date of metadata creation: 2023-07-21
Hierarchy level: Dataset