Publisher: CSIC - Instituto de Ciencias del Mar (ICM)
Project: EC | ASSEMBLE Plus (730984)
The presence of phytoplankton parasites along the water column was explored at the Long Term Ecological Station MareChiara (LTER-MC) in the Gulf of Naples (Mediterranean Sea) in October 2019. Microscopy analyses showed diatoms dominating the phytoplankton community in the upper layers (0-20 m). Metabarcoding data from the water column showed the presence of Chytridiomycota predominantly in the upper layers coinciding with the vertical distribution of diatoms. Laboratory incubations of natural samples enriched with different diatom cultures confirmed parasitic interactions of some of those chytrids – including members of Kappamyces – with diatom taxa. The temporal dynamics of diatoms and chytrids was also explored in a three-year metabarcoding time-series (2011-2013) from surface waters of the study area and in sediment samples. Chytrids were recurrently present at low relative abundances, and some taxa found to infect diatoms in the incubation experiments were also identified in the ASV time-series. However, co-occurrence analyses did not show any clear or recurrent pairing patterns for chytrid and diatom taxa along the three years. The chytrid community in the sediments showed a clearly different species composition compared to the recorded in the water column samples, with higher diversity and relative abundance. The combination of observations, incubations and metabarcoding confirmed that parasites are a common component of marine protist communities at LTER-MC. Host-parasite interactions must be determined and quantified to understand their role and the impact they have on phytoplankton dynamics File1: VERDI_samples_parameters.xlsx - Physico-chemical variables obtained from CTD profile - Inorganic nutrients concentrations - Chlorophyll-a concentrations - Organic carbon and nitrogen concentrations - Phytoplankton abundances - Detections of chytrids File 2: VERDI_asv_table.tbl: ASV abundances from natural samples and incubations File 3: VERDI_tax_table.tbl: Taxonomic assignments of ASVs File 4: VERDI_asv_seqs.fa: Sequences of ASVs File 5: VERDI_incubations_images.zip - Compilation of images taken during incubations with diatoms - Physico-chemical variables obtained from CTD profile - Inorganic nutrients concentrations - Chlorophyll-a concentrations - Organic carbon and nitrogen concentrations - Phytoplankton abundances - Detections of chytrids - Metabarcoding ASV abundances from natural samples and incubations - Metabarcoding Taxonomic assignments of ASVs - Metabarcoding Sequences of ASVs - Compilation of images taken during incubations with diatoms - European Union’s Horizon 2020 research and innovation programme under grant agreement No 730984, ASSEMBLE Plus project. - Spanish MICINN Project SMART (PID2020-112978GB-I00) - The research program LTER-MC is funded by the Stazione Zoologica Anton Dohrn Peer reviewed
Model outputs and code used for the study "Global nutrient cycling by commercially targeted marine fish" published in Biogeosciences (Le Mézo et al., 2022). composite4b_cycling_MCV3_PotH_LME_2010_R2_2010_fNPP7_ks24_p50_c7_newFNPP_Online_nruns_31 = model outputs with composite.maps contains the 2D fields y200 refers to fields at the pristine state and yglo to fields at the global peak catch. dfish is the fish biomass in wet weight per gram (size class) resp5 is the cycling rate that was used in the paper (defined in the Methods section) Main_script.mlx = main code used to compute the nutrient content and cycling of fish and the comparisons with other fields size_bins_width.m = code used to compute the model size bin width data_annual.mat = NO3, PO4, NPP, C export fields composite_MCV3_PotH_LME_2010_R2_2010_fNPP7_ks24_p50_c7_newFNPP_Online_nruns_31.mat is the model outputs with cyc.composite.maps.yglo.mean.harvest being the catch field at global peak catch solublefraction_Mahowald2009_360x180.nc is the Fe deposition field Brahneyetal2015_nitrogenandphosphorus2x2annualdep_360x180.nc is the N deposition field mask_LME.mat is the mask of LME areas ocean_topaz_tracers.timmean.BOATS_grid_fed.nc is the modeled dissolved Fe concentrations in seawater by the TOPAZ model zeu_lee_modis_aqua_average_2002-2019.nc is the euphotic depth field used to compute the nutrient concentrations woa05_nitrate_month.nc is the NO3 field used to make the spatial interpolations of the Fe:C stoichiometric ratios. mass_50sizes_boats.mat is the mass of each size class of the BOATS model Tables S2 and S3.xlsx litterature compilation of values for N and P in fish and zooplankton Galbraith et al (2019) SI.pdf is the supplement to Galbraith et al. (2019) in which the data compilation for the Fe content of fish, zooplankton and phytoplankton can be found.
Unidad de excelencia María de Maeztu CEX2019-000940-M This dataset contains supporting information for "Quantitative link between sedimentary chlorin and sea-surface chlorophyll-a". The dataset consists of global oceanic biogeochemical data from sea-surface, water column and surface sediments. The dataset includes sedimentary chlorin and sea-surface chlorophyll concentration, total organic carbon content, oxygen concentration and mass accumulation rate, among other biogeochemical parameters.
The database provides discrete measurements of carbon system parameters in water samples collected at 3 stations that form the marine time series GIFT during 33 oceanographic campaigns conducted over 2005–2021. Geographic coordinates of sampling stations are provided. Some physical data (i.e. pressure, temperature and salinity) are also included. Moreover, pH data obtained with a SAMI-pH sensor (Sunburst Sensors, LLC)) attached to a mooring line deployed in the Strait of Gibraltar for the years 2016 and 2017 are provided. During the cruises, a temperature and salinity profile was obtained with a Seabird 911Plus CTD probe. Seawater was subsequently collected for biogeochemical analysis using Niskin bottles immersed in an oceanographic rosette platform at variable depths (from 5 to 8 levels) depending on the instant position of the interface between the Atlantic and Mediterranean flows that was identified by CTD profiles. The biogeochemical variables shown in the database are pH in total scale at 25 °C (pHT25), total alkalinity (AT), and inorganic nutrients (phosphate, PO43and Silicate, SiO44−). pHT25 data were obtained by the spectrophotometric method with m-cresol purple as the indicator (Clayton & Byrne 1993). Samples were taken directly from the oceanographic bottles in 10 cm path-length optical glass cells and measurements were carried out with a Shimadzu UV-2401PC spectrophotometer containing a 25 °C-thermostated cells holder. Samples for AT analysis were collected in 500-ml borosilicate bottles, and poisoned with 100 μl of HgCl2-saturated aqueous solution and stored until measurement in the laboratory. AT was measured by potential titration according to Mintrop et al. (2000) with a Titroprocessor (model Metrohm 794 from 2005-2020 and model Metrothm 888 for 2021). Water samples (5 mL, two replicates) for inorganic nutrients determination were taken, filtered immediately (Whatman GF/F, 0.7 μm) and stored frozen for later analyses in the shore-based laboratory. Nutrients concentrations were measured with a continuous flow auto-analyzer using standard colorimetric techniques (Hansen & Koroleff 1999). 2. Methods for processing the data: 3. Instrument- or software-specific information needed to interpret/reproduce the data, please indicate their location: 4. Standards and calibration information, if appropriate: 5. Environmental/experimental conditions: 6. Describe any quality-assurance procedures performed on the data: 7. People involved with sample collection, processing, analysis and/or submission, please specify using CREDIT roles https://casrai.org/credit/: Chief Scientists -I.Emma Huertas/Susana Flecha; Hydro: Who -Susana Flecha/David Roque/Silvia Amaya-Vías/Angélica Enrique; Nuts: Who -Manuel Arjonilla/ Status - final; Silicate and Phosphate Autoanalizer Hansen and Koroleff (1999) This research was supported by the COMFORT project that has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 820989 (project COMFORT, "Our common future ocean in the Earth system – quantifying coupled cycles of carbon, oxygen, and nutrients for determining and achieving safe operating spaces with respect to tipping points).” Funding was also provided by the European projects CARBOOCEAN (FP6-511176), CARBOCHANGE (FP7-264879), PERSEUS (FP7-287600) and the Junta de Andalucía TECADE project (PY20_00293). The dataset is subject to a Creative Commons License Attribution-ShareAlike 4.0 International. F.F.P. was supported by the BOCATS2 (PID2019-104279GB-C21) project funded by MCIN/AEI/10.13039/501100011033. SAV was supported by a pre-doctoral grant FPU19/04338 from the Spanish Ministry of Science, Innovation and Universities. Peer reviewed
Expósito N; Rovira J; Sierra J; Gimenez G; Domingo JL; Schuhmacher M;
Expósito N; Rovira J; Sierra J; Gimenez G; Domingo JL; Schuhmacher M;
Microplastics (MPs) are accessible for organisms with active filter feeding strategies, as are many marine molluscs, which live attached or semi-buried in sediments. In the present study, MPs (from 0.02 to 5 mm) concentration, morphology, and composition were determined in consumed mollusc species of the Catalan coast (NW Mediterranean Sea). Microplastic concentrations, morphologic characteristics and composition were studied according to species, catchment zones and depuration condition. Finally, human intake of MPs through molluscs' consumption was determined. >2300 individuals were analysed, being 1460 MPs extracted and their size, and polymeric composition registered. Big oysters and mussels showed the highest MPs concentration by individual, with levels of 22.8 ± 14.4 and 18.6 ± 23.0 MPs/individual, respectively. Mean annual MPs (≥20 μm) consumption for adult population was estimated in 8103 MPs/year, with a 95th percentile of 19,418 MPs/year. It suggests that the consumption of molluscs is an important route of MPs exposure for the Catalan population.
El programa COLECTAX tiene como objetivo la creación, desarrollo y mantenimiento de un archivo natural de fauna marina en el IEO. FAUNAMARINA se enmarca dentro del programa 03 (Recursos Pesqueros del atlántico centro-oriental) del Área de Pesquerías como una actividad de investigación dentro de las distintas áreas temáticas en las que está estructurado dicho programa (biología, bases de datos, ecología, etc.), a la vez que supone una fuente de información sobre la biodiversidad en las áreas marinas en las que el IEO realiza investigaciones. En este sentido, el IEO cuenta en la actualidad con miles de ejemplares de peces e invertebrados procedentes de muy diversas áreas geográficas depositados en sus colecciones de referencia en los Centros de Málaga, Cádiz, Tenerife y Vigo. En estas colecciones destacan las muestras del Atlántico africano, tanto por su volumen como por la cantidad de especies raras de aguas profundas, así como la gran representación de fauna del Mediterráneo, con especímenes recolectados desde principios del siglo XX. También albergan una importante colección de invertebrados procedentes de todos los océanos y mares del mundo, incluyendo el Antártico. La colección de fauna marina del Centro Oceanográfico de Canarias cuenta con multitud de ejemplares de todos los grupos zoológicos marinos (peces, crustáceos, moluscos, cefalópodos...) de la costa oeste africana y del continente Antártico, además de una gran colección de material biológico como: “Colección de otolitos y escamas”; “Colección de mandíbulas”, “Colección de estatolitos de cefalópodos”, “Colección de piel y mandíbulas de condríctios” y una colección fotográfica con más de 15.000 imágenes.