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  • PANGAEA  (39)
Publikationsart
Schlagwörter
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  • 1
    facet.materialart.
    Unbekannt
    PANGAEA
    In:  Supplement to: Mompeán, Carmen; Bode, Antonio; Benítez-Barrios, Verónica M; Domínguez-Yanes, J Francisco; Escánez, José; Eugenio, Fraile-Nuez (2013): Spatial patterns of plankton biomass and stable isotopes reflect the influence of the nitrogen-fixer Trichodesmium along the subtropical North Atlantic. Journal of Plankton Research, 35(3), 513-525, https://doi.org/10.1093/plankt/fbt011
    Publikationsdatum: 2023-03-07
    Beschreibung: The spatial variability of biomass and stable isotopes in plankton size fractions in the upper 200 m was studied in a high spatial resolution transect along 24°N from Canary Islands to Florida (January - March 2011) during Leg 8 of the Malaspina-2010 expedition (http://www.expedicionmalaspina.es) to determine nitrogen and carbon sources. Plankton samples were collected by vertical tows of a microplankton net (40 mm mesh size) and a mesoplankton net (200 mm mesh size) through the upper 200 m of the water column. Sampling was between 10:00 and 16:00 h GMT. Plankton was separated into five size fractions (40 - 200, 200 - 500, 500 - 1000, 1000 - 2000 and 〉 2000 mm) by gentle filtration of the samples by a graded series of nylon sieves (2000, 1000, 500, 200 and 40 mm). Large gelatinous organisms were removed before filtration. Aliquots for each size fraction were collected on pre-weighed glass-fibre filters, dried (60°C, 48 h) and stored in a desiccator before determination of biomass (dry weight), carbon and nitrogen content and natural abundance of stable carbon and nitrogen isotopes ashore. Vertical advection of waters predominated in lateral zones while the central Atlantic (30-70°W) was characterized by a strong stratification and oligotrophic surface waters. Plankton biomass was low in the central zone and high in both eastern and western sides, with most of the variability due to either large (〉2000 µm) and small plankton (〈500 µm). Carbon isotopes reflected mainly the advection the deep water in lateral zones. Stable nitrogen isotopes showed a nearly symmetrical spatial distribution in all fractions, with the lowest values (delta15N 〈1per mill) in the central zone, and were inversely correlated to carbon stable isotopes (delta13C) and to the abundance of the nitrogen-fixer Trichodesmium. Diazotrophy was estimated to account for 〉50% of organic nitrogen in the central zone, and even 〉30% in eastern and western zones. The impact of diazotrophy increased with the size of the organisms, supporting the wide participation of all trophic levels in the processing of recently fixed nitrogen. These results indicate that atmospheric sources of carbon and nitrogen prevail over deep water sources in the subtropical North Atlantic and that the zone influenced by diazotrophy is much larger than reported in previous studies.
    Schlagwort(e): Basin Scale Analysis, Synthesis and Integration; Date/Time of event; Depth, bottom/max; Depth, top/min; DEPTH, water; Element analyser CHNS-O, Carlo Erba EA1108; EURO-BASIN; Event label; Latitude of event; Longitude of event; MALASPINA_LEG8; MALASPINA_LEG8_012-1; MALASPINA_LEG8_016-1; MALASPINA_LEG8_020-1; MALASPINA_LEG8_024-1; MALASPINA_LEG8_027-1; MALASPINA_LEG8_030-1; MALASPINA_LEG8_033-1; MALASPINA_LEG8_037-1; MALASPINA_LEG8_039-1; MALASPINA_LEG8_040-1; MALASPINA_LEG8_043-1; MALASPINA_LEG8_045-1; MALASPINA_LEG8_048-1; MALASPINA_LEG8_052-1; MALASPINA_LEG8_055-1; MALASPINA_LEG8_059-1; MALASPINA_LEG8_061-1; MALASPINA_LEG8_064-1; MALASPINA_LEG8_068-1; MALASPINA_LEG8_071-1; MALASPINA_LEG8_075-1; MALASPINA_LEG8_078-1; MALASPINA_LEG8_082-1; MALASPINA_LEG8_085-1; MALASPINA_LEG8_088-1; MALASPINA_LEG8_091-1; MALASPINA_LEG8_094-1; MALASPINA_LEG8_097-1; MALASPINA_LEG8_100-1; MALASPINA_LEG8_104-1; MALASPINA_LEG8_107-1; MALASPINA_LEG8_110-1; MALASPINA_LEG8_113-1; MALASPINA_LEG8_116-1; MALASPINA_LEG8_120-1; MALASPINA_LEG8_125-1; MALASPINA_LEG8_128-1; MALASPINA_LEG8_133-1; MALASPINA_LEG8_137-1; MALASPINA_LEG8_143-1; MALASPINA_LEG8_149-1; MALASPINA_LEG8_157-1; MALASPINA_LEG8_161-1; MALASPINA-2010; Malaspina circumnavigation expedition; Mass spectrometer Finnigan Delta Plus; MSN; Multiple opening/closing net; Plankton, biomass as carbon; Plankton, biomass as dry weight; Plankton, biomass as nitrogen; Sarmiento de Gamboa; station: 012; station: 016; station: 020; station: 024; station: 027; station: 030; station: 033; station: 037; station: 039; station: 040; station: 043; station: 045; station: 048; station: 052; station: 055; station: 059; station: 061-1; station: 064; station: 068; station: 071-1; station: 075; station: 078-1; station: 082; station: 085; station: 088; station: 091; station: 094; station: 097; station: 100; station: 104; station: 107; station: 110; station: 113; station: 116; station: 120; station: 125; station: 128; station: 133; station: 137; station: 143; station: 149; station: 157; station: 161-1; Subtropical North Atlantic; Weighted; δ13C, plankton; δ15N, plankton
    Materialart: Dataset
    Format: text/tab-separated-values, 1161 data points
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 2
    facet.materialart.
    Unbekannt
    PANGAEA
    In:  Supplement to: Luo, Yawei; Doney, Scott C; Anderson, L A; Benavides, Mar; Berman-Frank, I; Bode, Antonio; Bonnet, S; Boström, Kjärstin H; Böttjer, D; Capone, D G; Carpenter, E J; Chen, Yaw-Lin; Church, Matthew J; Dore, John E; Falcón, Luisa I; Fernández, A; Foster, R A; Furuya, Ken; Gomez, Fernando; Gundersen, Kjell; Hynes, Annette M; Karl, David Michael; Kitajima, Satoshi; Langlois, Rebecca; LaRoche, Julie; Letelier, Ricardo M; Marañón, Emilio; McGillicuddy Jr, Dennis J; Moisander, Pia H; Moore, C Mark; Mouriño-Carballido, Beatriz; Mulholland, Margaret R; Needoba, Joseph A; Orcutt, Karen M; Poulton, Alex J; Rahav, Eyal; Raimbault, Patrick; Rees, Andrew; Riemann, Lasse; Shiozaki, Takuhei; Subramaniam, Ajit; Tyrrell, Toby; Turk-Kubo, Kendra A; Varela, Manuel; Villareal, Tracy A; Webb, Eric A; White, Angelicque E; Wu, Jingfeng; Zehr, Jonathan P (2012): Database of diazotrophs in global ocean: abundance, biomass and nitrogen fixation rates. Earth System Science Data, 4, 47-73, https://doi.org/10.5194/essd-4-47-2012
    Publikationsdatum: 2023-03-27
    Beschreibung: The MAREDAT atlas covers 11 types of plankton, ranging in size from bacteria to jellyfish. Together, these plankton groups determine the health and productivity of the global ocean and play a vital role in the global carbon cycle. Working within a uniform and consistent spatial and depth grid (map) of the global ocean, the researchers compiled thousands and tens of thousands of data points to identify regions of plankton abundance and scarcity as well as areas of data abundance and scarcity. At many of the grid points, the MAREDAT team accomplished the difficult conversion from abundance (numbers of organisms) to biomass (carbon mass of organisms). The MAREDAT atlas provides an unprecedented global data set for ecological and biochemical analysis and modeling as well as a clear mandate for compiling additional existing data and for focusing future data gathering efforts on key groups in key areas of the ocean. This is a gridded data product about diazotrophic organisms . There are 6 variables. Each variable is gridded on a dimension of 360 (longitude) * 180 (latitude) * 33 (depth) * 12 (month). The first group of 3 variables are: (1) number of biomass observations, (2) biomass, and (3) special nifH-gene-based biomass. The second group of 3 variables is same as the first group except that it only grids non-zero data. We have constructed a database on diazotrophic organisms in the global pelagic upper ocean by compiling more than 11,000 direct field measurements including 3 sub-databases: (1) nitrogen fixation rates, (2) cyanobacterial diazotroph abundances from cell counts and (3) cyanobacterial diazotroph abundances from qPCR assays targeting nifH genes. Biomass conversion factors are estimated based on cell sizes to convert abundance data to diazotrophic biomass. Data are assigned to 3 groups including Trichodesmium, unicellular diazotrophic cyanobacteria (group A, B and C when applicable) and heterocystous cyanobacteria (Richelia and Calothrix). Total nitrogen fixation rates and diazotrophic biomass are calculated by summing the values from all the groups. Some of nitrogen fixation rates are whole seawater measurements and are used as total nitrogen fixation rates. Both volumetric and depth-integrated values were reported. Depth-integrated values are also calculated for those vertical profiles with values at 3 or more depths.
    Schlagwort(e): MAREMIP; MARine Ecosystem Model Intercomparison Project
    Materialart: Dataset
    Format: application/zip, 1.7 MBytes
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 3
    Publikationsdatum: 2023-03-25
    Schlagwort(e): Acartia spp., carbon/nitrogen ratio; Acartia spp., δ13C; Acartia spp., δ15N; Calanus spp., carbon/nitrogen ratio; Calanus spp., δ13C; Calanus spp., δ15N; Centropages spp., carbon/nitrogen ratio; Centropages spp., δ13C; Centropages spp., δ15N; DATE/TIME; E2GI; Event label; Mass spectrometer Finnigan Delta Plus; NW-Spain; PLA; Plankton net; Sample amount, subset; Time of day
    Materialart: Dataset
    Format: text/tab-separated-values, 140 data points
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 4
    facet.materialart.
    Unbekannt
    PANGAEA
    In:  Supplement to: Bode, Antonio; Varela, Manuel; Prego, Ricardo; Rozada, Fernando; Santos, Martín D (2017): The relative effects of upwelling and river flow on the phytoplankton diversity patterns in the ria of A Coruña (NW Spain). Marine Biology, 164(4), 93, https://doi.org/10.1007/s00227-017-3126-9
    Publikationsdatum: 2023-01-13
    Beschreibung: Monthly observations of phytoplankton taxa along with water variables collected in surface waters of a salinity gradient near A Coruña during 2011 are provided. The gradient include stations in marine (A Coruña Bay), estuarine (Ria do Burgo) and freshwater environments (river Mero and Cecebre reservoir). Marine waters were incluenced by coastal upwelling and the river flow was controlled by freshwater discharges from the reservoir. Phytoplankton taxa were identified by microscope at the species level where possible. Water variables include: temperature, salinity, conductivity, dissolved inorganic nutrients (nitrate, nitrite, ammonium, phosphate, and silicate), chlorophylls (a, b and c), concentration of hmic and aminoacid-like dissolved substances, dissolved organic carbon and particulate carbon and nitrogen.
    Materialart: Dataset
    Format: application/zip, 2 datasets
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 5
    facet.materialart.
    Unbekannt
    PANGAEA
    In:  Supplement to: Bode, Antonio; Alvarez-Ossorio, María Teresa; Cunha, M Emilia; Garrido, Susana; Peleteiro, J Benito; Porteiro, Carmela; Valdés, Luis; Varela, Manuel (2007): Stable nitrogen isotope studies of the pelagic food web on the Atlantic shelf of the Iberian Peninsula. Progress in Oceanography, 74(2-3), 115-131, https://doi.org/10.1016/j.pocean.2007.04.005
    Publikationsdatum: 2023-01-13
    Beschreibung: The structure and variability of pelagic food webs along the north and northwestern shelf of the Iberian Peninsula were analysed using natural abundance of nitrogen stable isotopes of plankton and pelagic consumers. Plankton composition was mainly studied in size-fractionated samples, but also the isotopic signatures of three copepod species, as representative of primary consumers, were considered. Several fish species were included as planktivorous consumers, with special attention to sardine (Sardina pilchardus). Finally, top pelagic consumers were represented by the common dolphin (Delphinus delphis). The relationship between trophic position and body size implies large variability in the ratio of predator to prey sizes, likely because widespread omnivory and plankton consumption by relatively large predators. Planktivorous species share a common trophic position, suggesting potential competition for food, and low nitrogen isotope enrichment between prey and consumers suggest nutrient limitation and recycling at the base of the food web. Both experimental and field evidences indicate that the muscle of sardine integrates fish diet over seasonal periods and reflects the composition of plankton from large shelf areas. The low mobility of sardines during periods of low population size is consistent with differential isotopic signatures found in shelf zones characterised by upwelling nutrient inputs.
    Materialart: Dataset
    Format: application/zip, 2 datasets
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 6
    facet.materialart.
    Unbekannt
    PANGAEA
    In:  Supplement to: Bode, Antonio; Hernández-León, Santiago (2018): Trophic diversity of plankton in epipelagic and mesopelagic layers of the tropical and equatorial Atlantic determined with stable isotopes. Diversity, 10, 48, https://doi.org/10.3390/d10020048
    Publikationsdatum: 2023-01-13
    Beschreibung: Carbon and nitrogen elemental composition along with natural abundance of stable isotopes in seston and zooplankton specimens (〉200 µm) were measured in samples collected at 12 stations in the tropical and subtropical Atlantic. Seston samples were collected with Niskin bottles and zooplankton with a MOCNESS-1 net in the epipelagic (0-200 m), upper mesopelagic (200-500 m) and lower mesopelagic layers (500-800 m). Zooplankton specimens were representative of the main trophic guilds (herbivorous copepods, omnivorous-carnivorous copepods, large crustacean mesozooplankton and chaetognaths) according to the literature.
    Materialart: Dataset
    Format: application/zip, 2 datasets
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 7
    Publikationsdatum: 2023-01-30
    Beschreibung: Water-column integrated measurements of natural abundance of stable carbon and nitrogen isotopes in seston, sediment trap particles and in four plankton size-fractions (200-5000µm) in montlhy samples collected in a shelf station off A Coruña (NW Spain) between 2010 and 2011.
    Schlagwort(e): Carbon/Nitrogen ratio; DATE/TIME; E2CO_MI; E2CO_Multiple_Investigations; Galicia Margin; MULT; Multiple investigations; plankton; RADIALES; sediment trap; seRies temporAles De oceanografIA en eL norte de ESpaña; seston; Stable isotopes; Upwelling; δ13C; δ15N
    Materialart: Dataset
    Format: text/tab-separated-values, 429 data points
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 8
    Publikationsdatum: 2023-01-30
    Schlagwort(e): Atlantic; Calculated after Luo et al. (2012); Chlorophyll a as carbon; Date/Time of event; DEPTH, water; Event label; Hesperides_01a; Hesperides_02a; Hesperides_03a; Hesperides_04a; Hesperides_05a; Hesperides_06a; Hesperides_07a; Hesperides_08a; Hesperides_09a; Hesperides_10a; Hesperides_11a; Hesperides_12a; Hesperides_13a; Hesperides_14a; Hesperides_15a; Hesperides_16a; Hesperides_17a; Hesperides_18a; Hesperides_19a; Hesperides_20a; Hesperides_21a; Hesperides_22a; Hesperides_23a; Hesperides_24a; Hesperides_25a; Hesperides_26a; Hesperides_27a; Hesperides_28a; Hesperides_29a; Hesperides_30a; Hesperides_31a; Hesperides_32a; Hesperides_33a; Hesperides_34a; Hesperides_35a; Hesperides_36a; Hesperides_37a; Hesperides_38a; Hesperides_39a; Hesperides_40a; Hesperides_41a; Hesperides_42a; Latitude of event; Longitude of event; MAREDAT_Diazotrophs_Collection; Nitrate; Nitrogen Fixation (C2H2 Reduction); Nitrogen fixation rate, total; Nitrogen fixation rate, whole seawater; Phosphate; Salinity; Temperature, water
    Materialart: Dataset
    Format: text/tab-separated-values, 777 data points
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 9
    Publikationsdatum: 2023-02-12
    Schlagwort(e): Ammonium; BUCKET; Bucket water sampling; Carbon, organic, dissolved; Carbon, organic, particulate; Chlorophyll a; Chlorophyll b; Chlorophyll c; Conductivity, electrical; DATE/TIME; DEPTH, water; Event label; Humic acids; Latitude of event; Longitude of event; Nitrate; Nitrite; Nitrogen, organic, particulate; NW-Spain; Phosphate; RM1; RM10; RM2; RM3; RM4; RM5; RM8; RM9; Salinity; Silicate; Temperature, water; Tryptophan
    Materialart: Dataset
    Format: text/tab-separated-values, 1255 data points
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 10
    Publikationsdatum: 2023-02-12
    Schlagwort(e): Atlantic; Calculated after Luo et al. (2012); Chlorophyll total; Date/Time of event; DEPTH, water; Diazotrophs, total biomass as carbon; Event label; Hesperides_01a; Hesperides_01b; Hesperides_01c; Hesperides_02a; Hesperides_02b; Hesperides_02c; Hesperides_02d; Hesperides_02e; Hesperides_03a; Hesperides_03b; Hesperides_03c; Hesperides_03d; Hesperides_04a; Hesperides_04b; Hesperides_04c; Hesperides_05a; Hesperides_05b; Hesperides_05c; Hesperides_05d; Hesperides_05e; Hesperides_05f; Hesperides_05g; Hesperides_06a; Hesperides_06b; Hesperides_06c; Hesperides_06d; Hesperides_07a; Hesperides_07b; Hesperides_07c; Hesperides_07d; Hesperides_07e; Hesperides_07f; Hesperides_08a; Hesperides_08b; Hesperides_08c; Hesperides_08d; Hesperides_08e; Hesperides_08f; Hesperides_09a; Hesperides_09b; Hesperides_09c; Hesperides_09d; Hesperides_09e; Hesperides_09f; Hesperides_10a; Hesperides_10b; Hesperides_10c; Hesperides_10d; Hesperides_10e; Hesperides_11a; Hesperides_11b; Hesperides_11c; Hesperides_11d; Hesperides_11e; Hesperides_11f; Hesperides_12a; Hesperides_12b; Hesperides_12c; Hesperides_12d; Hesperides_12e; Hesperides_13a; Hesperides_13b; Hesperides_13c; Hesperides_13d; Hesperides_13e; Hesperides_13f; Hesperides_14a; Hesperides_14b; Hesperides_14c; Hesperides_14d; Hesperides_14e; Hesperides_14f; Hesperides_15a; Hesperides_15b; Hesperides_15c; Hesperides_15d; Hesperides_16a; Hesperides_16b; Hesperides_16c; Hesperides_16d; Hesperides_16e; Hesperides_17a; Hesperides_17b; Hesperides_17c; Hesperides_18a; Hesperides_18b; Hesperides_18c; Hesperides_18d; Hesperides_18e; Hesperides_19a; Hesperides_19b; Hesperides_19c; Hesperides_20a; Hesperides_20b; Hesperides_21a; Hesperides_21b; Hesperides_22a; Hesperides_23a; Hesperides_23b; Hesperides_23c; Hesperides_23d; Hesperides_24a; Hesperides_24b; Hesperides_24c; Hesperides_24d; Hesperides_25a; Hesperides_25b; Hesperides_25c; Hesperides_25d; Hesperides_26a; Hesperides_26b; Hesperides_26c; Hesperides_26d; Hesperides_27a; Hesperides_27b; Hesperides_27c; Hesperides_27d; Hesperides_28a; Hesperides_28b; Hesperides_28c; Hesperides_28d; Hesperides_29a; Hesperides_29b; Hesperides_29c; Hesperides_29d; Hesperides_29e; Hesperides_29f; Hesperides_30a; Hesperides_30b; Hesperides_30c; Hesperides_30d; Hesperides_30e; Hesperides_30f; Hesperides_31a; Hesperides_31b; Hesperides_31c; Hesperides_31d; Hesperides_31e; Hesperides_31f; Hesperides_32a; Hesperides_32b; Hesperides_32c; Hesperides_32d; Hesperides_32e; Hesperides_32f; Hesperides_33a; Hesperides_33b; Hesperides_33c; Hesperides_33d; Hesperides_33e; Hesperides_33f; Hesperides_34a; Hesperides_34b; Hesperides_34c; Hesperides_34d; Hesperides_34e; Hesperides_34f; Hesperides_35a; Hesperides_35b; Hesperides_35c; Hesperides_35d; Hesperides_35e; Hesperides_35f; Hesperides_36a; Hesperides_36b; Hesperides_36c; Hesperides_36d; Hesperides_36e; Hesperides_36f; Hesperides_37a; Hesperides_37b; Hesperides_37c; Hesperides_37d; Hesperides_37e; Hesperides_37f; Hesperides_38a; Hesperides_38b; Hesperides_38c; Hesperides_38d; Hesperides_38e; Hesperides_38f; Hesperides_39a; Hesperides_39b; Hesperides_39c; Hesperides_39d; Hesperides_39e; Hesperides_40a; Hesperides_40b; Hesperides_40c; Hesperides_40d; Hesperides_40e; Hesperides_40f; Hesperides_41a; Hesperides_41b; Hesperides_41c; Hesperides_41d; Hesperides_41e; Hesperides_41f; Hesperides_42a; Hesperides_42b; Hesperides_42c; Latitude of event; Light microscope; Longitude of event; MAREDAT_Diazotrophs_Collection; Nitrate; Phosphate; Salinity; Temperature, water; Trichodesmium, biomass as carbon; Trichodesmium, carbon per trichome; Trichodesmium abundance, free trichomes; Trichodesmium abundance, total
    Materialart: Dataset
    Format: text/tab-separated-values, 1205 data points
    Standort Signatur Einschränkungen Verfügbarkeit
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