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  • 1
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    Hydrography, biogeochemistry, microbial population, growth and substrate dynamics between subarctic and subantarctic waters in the Pacific Ocean during the cruises SO248 and SO254 with RV Sonne (2020)
    PANGAEA
    Details
    Publication Date: 2024-02-28
    Description: Data presented here were collected during the two cruises SO248 and SO254 with RV SONNE in the Pacific Ocean at 25 stations along a transect closely following 180° longitude E/W between 52.1°S southeast of New Zealand and 58.9°N in the Bering Sea. The first cruise SO248 was conducted from Auckland, New Zealand, to Dutch Harbor, USA (May 1st, 2016 - June 3rd, 2016) and the second (SO254) took place from January 26th, 2017 - February 27th, 2017 and started and ended in Auckland, New Zealand. The data comprises hydrographical, chemical, biogeochemical and biological parameters.
    Keywords: Acetone extraction, fluorescence determination; Amino acid, total dissolved free; Amino acid, total dissolved free uptake; Amino acid, total hydrolysable dissolved; Amino acids, dissolved combined; BacGeoPac; Bacteria; Bacteria, heterotrophic with relatively low DNA content; BD FACS ARIA3 Flow Cytometer, autofluorescence (AF); Bering Sea; biogeochemistry; Biogeographical province; Biogeographical province after Longhurst (2006); biogeography; Breakdown of fluorescent substrate analoga (Obayashi and Suzuki, 2005, Limnol Oceanogr; Balmonte et al ., 2018, Environ Microbiol); Calculated; Calculated; DCAA = THDAA - DFAA; after Lunau et al. (2006); Calculated from downwelling photosynthetically active radiation PAR Ed, integrated from 400 - 700 nm; Carbohydrates, dissolved, neutral free; Carbohydrates, dissolved, neutral free, uptake; Carbohydrates, total hydrolyzable; Carbon, organic, particulate; Carbon, organic, particulate/Nitrogen, organic, particulate ratio; CARD-FISH; Catalyzed reporter deposition fluorescence in situ hybridisation (CARD-FISH); Catalyzed reporter deposition fluorescence in situ hybridisation (CARD-FISH), % of the DAPI positive stained cells; Chlorophyll a; Combustion by FlashEA 1112 CHN-analyzer; Conductivity; CTD, Sea-Bird, SBE 911plus [SN: 09-1266]; CTD, SEA-BIRD SBE 911plus, SN 5828 / SN 4529; CTD/Rosette; CTD-RO; cyanobacteria; Cyanobacteria; Cyanobacteria, cell size, forward scatter; Cyanobacteria, cell size, side scatter; Cytophaga-Flavobacteria; Cytophaga-Flavobacteria, cells; DATE/TIME; Density, sigma-theta (0); Depth, relative; DEPTH, water; Depth of Secchi Disk; ELEVATION; Equatorial Pacific; Eukaryotes; Eukaryotes, cell size, forward scatter; Eukaryotes, cell size, relative; Eukaryotes, cell size, side scatter; Event label; Flagellates+algae; Flagellates+algae, cell size, forward scatter; Flagellates+algae, cell size, side scatter; Flow Cytometer, BD Biosciences, C6 [autofluorescence, calibration of the forward scatter (FSC)]; Flow Cytometer, BD Biosciences, C6 [autofluorescence (AF)]; Flow Cytometer, BD Biosciences, C6 [calibration of the forward scatter (FSC), only relative cell size due to calibration after Giebel et al. (2019)]; Flow Cytometer, BD Biosciences, C6 [SybrGreenI staining]; flow cytometry; Fluorescence, chlorophyll; Fluorescence determination; Fluorometer, WET Labs ECO AFL/FL; Forel-Ule index; Gammaproteobacteria; Gammaproteobacteria, cells; Generation time; heterotrophic prokaryotic production; High nucleic acid bacteria; High nucleic acid bacteria, cell size, forward scatter; High nucleic acid bacteria, cell size, relative; High nucleic acid bacteria, cell size, side scatter; High performance liquid chromatography (HPLC) using an Agilent 1200 HPLC device after an ortho-phthaldialdehyde precolumn derivatization (Lindroth and Mopper, 1979) with slight modifications as described by Lunau et al. (2006); High Performance Liquid Chromatography (HPLC) using anion-exchange columns by pulsed amperometric detection according to Mopper et al. (1992); HNA; HPLC after Lindroth and Mopper (1979) with slight modifications as described by Lunau et al. (2006); Hydrolysis rate, beta-Glucose; Hydrolysis rate, Leucine; Incorporation of 14C-leucine (Simon and Azam, 1989, http://www.int-res.com/articles/meps/51/m051p201.pdf; Simon et al. 2004, doi:10.4319/lo.2004.49.4.1035); Incorporation of 3H-acetate (Simon et al. 2007, doi:10.4319/lo.2007.52.1.0085); Incorporation of 3H-Amino acid mix (Simon et al. 2004, doi:10.4319/lo.2004.49.4.1035; 2007, doi:10.4319/lo.2007.52.1.0085); Incorporation of 3H-Glucose (Simon et al. 2004, doi:10.4319/lo.2004.49.4.1035; 2007, doi:10.4319/lo.2007.52.1.0085); LATITUDE; LNA; LONGITUDE; Low nucleic acid bacteria; Low nucleic acid bacteria, cell size, forward scatter; Low nucleic acid bacteria, cell size, relative; Low nucleic acid bacteria, cell size, side scatter; Microplankton; Microplankton, cell size, forward scatter; Microplankton, cell size, relative; Microplankton, cell size, side scatter; Mixed layer depth; Nanoplankton; Nanoplankton, cell size, forward scatter; Nanoplankton, cell size, relative; Nanoplankton, cell size, side scatter; Nitrate; Nitrite; Nitrogen, organic, particulate; Nitrogen oxide; North Pacific Ocean; Ökologie, Physiologie und Molekularbiologie der Roseobacter-Gruppe: Aufbruch zu einem systembiologischen Verständnis einer global wichtigen Gruppe mariner Bakterien; Oxygen; Oxygen optode, Aanderaa, type 4831F; Pacific Ocean; Phosphate; Picoplankton; Picoplankton, cell size, forward scatter; Picoplankton, cell size, relative; Picoplankton, cell size, side scatter; Polaribacter; Polaribacter, cells; Pori Bac NewZ; Pressure, water; Prochlorococcus; Prochlorococcus, cell size, forward scatter; Prochlorococcus, cell size, side scatter; Prokaryotes, cell size, forward scatter; Prokaryotes, cell size, relative; Prokaryotes, growth rate; Prokaryotes, heterotroph; Prokaryotes, heterotroph, biomass production in mass protein; Prokaryotes, heterotroph, carbon production; Prokaryotes, heterotroph, cell size, side scatter; Prokaryotes, heterotroph, nitrogen production; Prokaryotes, heterotroph, protein production; Roseobacter; Roseobacter, cells; Roseobacter clade affiliated cluster, Planktomarina temperata; Roseobacter clade affiliated cluster, Planktomarina temperata, cells; RV Sonne; Salinity; SAR11; SAR11, cells; Silicate; SO248; SO248_10-2a; SO248_1-1; SO248_11-1; SO248_12-1; SO248_13-3; SO248_14-3; SO248_15-1; SO248_16-2; SO248_17-4; SO248_18-3; SO248_19-1; SO248_2-1; SO248_3-1; SO248_4-3; SO248_5-1; SO248_6-2; SO248_7-1; SO248_8-4; SO248_9-6; SO254; SO254_11-1; SO254_32-1; SO254_38-1; SO254_47-1; SO254_61-1; SO254_65-1; Sonne_2; Sound velocity in water; South Pacific Ocean; Station label; Synechococcus; Synechococcus, cell size, forward scatter; Synechococcus, cell size, side scatter; Temperature, water; Temperature, water, potential; TRR51; Turbidity (Nephelometric turbidity unit); Turnover rate, acetate; Turnover rate, amino acids, dissolved, free; Turnover rate, glucose
    Type: Dataset
    Format: text/tab-separated-values, 19990 data points
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    DATA PANGAEA
  • 2
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    Microbial growth and organic matter cycling in the Pacific Ocean along a latitudinal transect between subarctic and subantarctic waters (2021)
    In:  EPIC3Frontiers in Marine Science, 8, pp. 764383, ISSN: 2296-7745
    Details
    Publication Date: 2021-12-14
    Description: The Pacific Ocean constitutes about half of the global oceans and thus microbial processes in this ocean have a large impact on global elemental cycles. Despite several intensely studied regions large areas are still greatly understudied regarding microbial activities, organic matter cycling and biogeography. Refined information about these features is most important to better understand the significance of this ocean for global biogeochemical and elemental cycles. Therefore we investigated a suite of microbial and geochemical variables along a transect from the subantarctic to the subarctic Pacific in the upper 200 m of the water column. The aim was to quantify rates of organic matter processing, identify potential controlling factors and prokaryotic key players. The assessed variables included abundance of heterotrophic prokaryotes and cyanobacteria, heterotrophic prokaryotic production (HPP), turnover rate constants of amino acids, glucose, and acetate, leucine aminopeptidase and β-glucosidase activities, and the composition of the bacterial community by fluorescence in situ hybridization (FISH). The additional quantification of nitrate, dissolved amino acids and carbohydrates, chlorophyll a, particulate organic carbon and nitrogen (POC, PON) provided a rich environmental context. The oligotrophic gyres exhibited the lowest prokaryotic abundances, rates of HPP and substrate turnover. Low nucleic acid prokaryotes dominated in these gyres, whereas in temperate and subpolar regions further north and south, high nucleic acid prokaryotes dominated. Turnover rate constants of glucose and acetate, as well as leucine aminopeptidase activity, increased from (sub)tropical toward the subpolar regions. In contrast, HPP and bulk growth rates were highest near the equatorial upwelling and lowest in the central gyres and subpolar regions. The SAR11 clade, the Roseobacter group and Flavobacteria constituted the majority of the prokaryotic communities. Vertical profiles of the biogeochemical and microbial variables markedly differed among the different regions and showed close covariations of the microbial variables and chlorophyll a, POC and PON. The results show that hydrographic, microbial, and biogeochemical properties exhibited distinct patterns reflecting the biogeographic provinces along the transect. The microbial variables assessed contribute to a better and refined understanding of the scales of microbial organic matter processing in large areas of the epipelagic Pacific beyond its well-studied regions.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , peerRev
    Format: application/pdf
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