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756 results for “Plankton”
FIGURE 3 in Eocene planktonic foraminifera from the north Eastern Desert, Egypt: Biostratigraphic, paleoenvironmental and sequence stratigraphy implications
FIGURE 3. Range chart of the identified planktonic species in section A.
Figure 1 in Tintinnina (Ciliophora) and Foraminifera in plankton of hypersaline Lagoon Bardawil (Egypt): spatial and temporal variability
Figure 1. Map of sampling stations in Lagoon Bardawil.
ULTRAMICROBACTERIA AND FILTERABLE BACTERIA IN THE PLANKTON OF LAKE BAIKAL
<p>In Lake Baikal, the number, diversity and structure of femtoplankton – bacteria passing through filters with a pore size of 0.2 μm were studied for the first time using a complex of methods. The bacterial abundance in the femtoplankton fraction was 7×10<sup>4</sup> cells/ml in the 0-50 m water layer as measured by epifluorescence microscopy, and their contribution to the total bacterial number reached an average of 4.4%. High throughput sequencing of 16S rRNA gene fragments revealed a significant genetic and taxonomic diversity of femtobacterioplankton in the pelagic and littoral zones of the lake. Dominant and minor phyla, orders, families, genera, and phylotypes of bacteria were identified in two fractions of the Lake Baikal bacterioplankton larger and smaller than 0.2 µm; the contribution of ultrasmall bacteria to the taxonomic composition of microbial communities in different parts of the lake was determined. Significant differences in the microbiomes of bacterioplankton and femtobacterioplankton fractions were revealed, and the peculiarities of ultramicrobacteria composition were described. The results showed an important role of ultrasmall bacteria in the Lake Baikal ecosystem. </p> <p><strong>This repository contains raw sequencing data from DNA metabarcoding and metadata with samples description for the current study.</strong></p>
AquaParadox: The Diversity of Planktonic Microorganisms
The collection of images and videos was originally developed as an outreach effort of a multi-partner research project called Aquaparadox (from Hutchinson__s __Paradox of the Plankton"). In the project we examined morphological, genetic and physiological diversity in common coastal protist morpho-species, that is morphologically-defined species. Subjects of study included a wide range of protists: 1) grazers of the sea - tintinnid ciliates, 2) autotrophs, that is __plant__ or phytoplankton forms- the dinoflagellate Ceratium and the small flagellate Micromonas and 3) the dinoflagellate parasite Syndiniales. The project was financed from 2008 through 2011 and involved 4 laboratories: The Microbial Ecology Group of the Laboratoire d__Océanographie de Villefranche (alas, a now defunct group), The Oceanic Plankton Group in Roscoff, The Microbial Diversity and Evolution Group of the University of Paris XI (Paris-Sud) and the Virtual Biology Laboratory of the University of Nice Sophia-Antipolis. Financial support was from the ANR and Pôle Mer PACA (France). <p></p>http://aquaparadox.obs-vlfr.fr/
Marine Planktonic Copepods: Marine Planktonic Copepods- test snapshot, Feb 24, 2021
Razouls C., de Bovée F., Kouwenberg J. et Desreumaux N., 2005-2018. - Diversity and Geographic Distribution of Marine Planktonic Copepods. Sorbonne Université, CNRS. Available at <p></p>http://copepodes.obs-banyuls.fr/en<p></p>
Marine Planktonic Copepods
Razouls C., de Bovée F., Kouwenberg J. et Desreumaux N., 2005-2018. - Diversity and Geographic Distribution of Marine Planktonic Copepods. Sorbonne Université, CNRS. Available at <p></p>http://copepodes.obs-banyuls.fr/en<p></p>Razouls C., de Bovée F., Kouwenberg J. et Desreumaux N., 2005-2018. - Diversity and Geographic Distribution of Marine Planktonic Copepods. Sorbonne Université, CNRS. Available at <p></p>http://copepodes.obs-banyuls.fr/en
Pathogen non-planktonic phases within the urinary tract impact early infection and resistance evolution - Data
<p>This upload contains data that is necessary to re-create the figures for the manuscript "<strong>Infection dynamics in the urinary tract - The importance of non-planktonic phases during early infection and resistance evolution</strong>" by Raatz et al. published in The ISME Journal (<a href="https://doi.org/10.1093/ismejo/wrae191">https://doi.org/10.1093/ismejo/wrae191</a>).</p> <p>This manuscript is available as a bioRxiv preprint at https://www.biorxiv.org/content/10.1101/2023.10.23.563535.</p> <p>The related upload with DOI 10.5281/zenodo.10025282 contains the scripts to compute this data set, as well as the scripts for plotting.</p> <p> </p>
Planktonic foraminifera faunal data and derived sea-surface temperatures for the Marine Isotope Stage (MIS) 18 to MIS 28 interval of IODP Site U1387, Gulf of Cadiz
<p>Planktonic foraminifera faunal data and sea-surface temperature reconstructions for the early-middle Pleistocene interval between 750 and 1006 kilo years from IODP Site U1387 in the Gulf of Cadiz (southern Portuguese margin). This data was used to reconstruct the paleoecological and paleoclimatical changes at the southern Portuguese margin in Mega et al. (2025), The Early–Middle Pleistocene Transition in the Gulf of Cadiz (NE Atlantic) – an interplay between subtropical gyre and extremely cold surface waters. Clim. Past 21, 919-939, doi: 10.5194/cp-21-919-2025.</p> <p>The data is also available from the world data center Pangaea as a bundled data set:</p> <p>Voelker, Antje H L; Mega, Aline; Rodrigues, Teresa (2025): Planktonic foraminifera faunal data and sea-surface temperatures for the Marine Isotope Stage (MIS) 18 to MIS 28 interval of IODP Site 339-U1387, Gulf of Cadiz [dataset bundled publication]. PANGAEA, <a href="https://doi.org/10.1594/PANGAEA.974451" target="_blank" rel="nofollow noopener">https://doi.org/10.1594/PANGAEA.974451</a></p>
26,000+ machine-identified images of Modern planktonic foraminifera from 23 Atlantic coretops
<p>This dataset contains 26,663 images of Modern planktonic foraminifera taken as part of the Endless Forams (endlessforams.org) initiative that did not receive species labels assigned by human classifiers in Hsiang et al. (2019). These images were processed using AutoMorph (Hsiang et al. 2018) and assigned species labels using a deep learning classifier with a validation accuracy of 87.4% (Hsiang et al. 2019). The machine-assigned species labels for these images are available as part of the supplementary data associated with Hsiang & Hull (in prep., under screening at bioRxiv).</p> <p>The code associated with the generation of this dataset is available at https://github.com/palaeomachinist/foram-comm-ecol.</p> <p><strong>References</strong></p> <p>Hsiang AY, Brombacher A, Rilo MC, Mleneck-Vautravers MJ, Conn S, Lordsmith S, Jentzen A, Henehan MJ, Metcalfe B, Fenton I, Wade B, Fox L, Meilland J, Davis CV, Baranowski U, Groeneveld J, Edgar KM, Movellan A, Aze T, Dowsett H, Miller G, Rios N & Hull PM (2019) Endless Forams: >34,000 modern planktonic foraminiferal images for taxonomic training and automated species recognition using convolutional neural networks. <em>Paleoceanography and Paleoclimatology</em>. 34(7):1157-1177. (<a href="https://doi.org/10.1029/2019PA003612">https://doi.org/10.1029/2019PA003612</a>)</p> <p>Hsiang AY, Nelson K, Elder LE, Sibert EC, Kahanamoku SS, Burke JE, Kelly A, Liu Y, and Hull PM (2018) <em>AutoMorph</em>: Accelerating morphometrics with automated 2D and 3D image processing and shape extraction. <em>Methods in Ecology and Evolution. </em>9(3):605-612. (<a href="https://doi.org/10.1111/2041-210X.12915">https://doi.org/10.1111/2041-210X.12915)</a></p> <p>Hsiang AY & Hull PM. Automated community ecology using deep learning: a case study of planktonic foraminifera.</p>
Plankton community respiration and POC in the Kuroshio east of Taiwan
<p><span>This dataset contains data </span>collected from six shipboard measurements taken from the R/V <em>Ocean Researcher I</em> between April 2014 and November 2015, which covered the entire season: April, July, September, and November 2014 and March, June, September, and November 2015 in the Kuroshio, east of Taiwan described in the paper: "Chung-Chi Chen, Pei-Ji Meng, Chih-hao Hsieh, Sen Jan (2022). Plankton community respiration and particulate organic carbon in the Kuroshio, east of Taiwan. <em>Plants</em>".</p> <p><span>The main results of this study included seven figures, which show: 1). The sampling stations; 2). Typical depth profile contour plots of temperature, nitrate, chlorophyll a and particulate organic carbon within 250 m water depth along the KTV1 transect in September 2015; 3). Temporal and spatial variations of the mean values of nitrate and phosphate across the KTV1 transect of the Kuroshio; 4). Temporal and spatial variations of the mean values of chlorophyll a, particulate organic carbon, and plankton community respiration across the KTV1 transect of the Kuroshio; 5). Relationships between the concentration of plankton community respiration vs. particulate organic carbon, chlorophyll a, heterotrophic bacterioplankton, and all picophytoplankton; 6). Relationships between the concentration of particulate organic carbon vs. chlorophyll a and picophytoplankton for all pooled data; and 7). Temporal and spatial variations of the mean values of picophytoplankton in terms of abundance and biomass across the KTV1 transect of the Kuroshio.</span></p>
Environmental niche overlap in sibling planktonic species calanus finmarchicus and c. glacialis in Arctic fjords
<p><span>Knowledge of the environmental preferences of the key planktonic species, such as Calanus copepods in the Arctic, is crucial to understand ecosystem function and its future under climate change. Here we assessed the environmental conditions influencing the development stages of Atlantic C. finmarchicus and Arctic C. glacialis, and quantified the extent to which their niches overlap by incorporating multiple environmental data. We based our analysis on a three-year seasonal collection of zooplankton by sediment traps, located on moorings in two contrasting Svalbard fjords: the Arctic Rijpfjorden, and the Atlantic-influenced Kongsfjorden. Despite large differences in water temperature between the fjords, local realized niches of the sibling Calanus species overlapped almost perfectly. The exception was the earliest copepodites of C. glacialis in Rijpfjorden, which probably utilized the local ice algal bloom in spring. However, during periods with no sea ice, like in Kongsfjorden, the siblings of both Calanus species showed high synchronization in the population structure. Interestingly, differences in temperature preferences of C. finmarchicus and C. glacialis were much higher between the studied fjords than between the species. Our analysis confirmed the high plasticity of Calanus copepods and their </span><span>abilities to adapt to highly variable environmental settings, not only on an interannual basis, but also </span><span>in a climate warming context</span><span>, indicating some resilience in the Calanus community.</span></p>
Planktonic foraminifera count, shell weight and size data from sediment traps in the Fram Strait, HAUSGARTEN observatory (TDLT 2014), 2014 - 2015
<p>Counts, shell weight and shell size data of planktonic foraminifera from two depths of the sediment Trap TDLT 2014 in the HAUSGARTEN observatory in the eastern Fram Strait. Comparison of the count data done in the context of this study with count data conducted after the initial retrieval of the trapped material indicate high deviation. It is likely that the samples were affected by dissolution during the storage between retrieval (2015) and analysis (2020/2021), therefore both counts and weight and size data might not be representative.<br> <br> This data is supplement to the dissertation from Tell (2023).</p>
Planktonic foraminifera count, shell weight and size data from plankton nets from the Fram Strait (PS93.1)
<p>Planktonic foraminifera shells retrieved from different stations in the western Fram Strait (Campaign PS93.1), sampling up to 5 depth intervals at each stations. Foraminifera shells were identified to the species level after Brummer and Kucera (2022) and counted. By colouring from rose Bengal, they were divided into cytoplasm-bearing and empty shells. The average shell weight per species and shell type was measured per sample, and the individual shell size (different size parameters) for all shells.</p> <p>This data is supplement to the dissertation from Tell (2023). Part of the data is published in relation to Tell et al., 2023 on PANGAEA (https://doi.pangaea.de/10.1594/PANGAEA.941250), and species counts were also conducted and published by Greco et al. (2022), data likewise available on PANGAEA (<a href="https://doi.org/10.1594/PANGAEA.942033">https://doi.org/10.1594/PANGAEA.942033</a>).</p>
Dataset for: Do marine planktonic ciliates follow Bergmann's rule?
<p>This is a dataset used for the paper entitled "Do marine planktonic ciliates follow Bergmann's rule?" by Liu et al. This dataset includes the mean cell-size of ciliate community obtained from 282 samples from 154 stations covered from 20°S to 65°N. It also contains the biomass of ciliate community, the corresponding environmental parameters including seawater temperature and Chlorophyll <em>a</em> concentration (Chla), and the proxy for phytoplankton (prey) size estimated by two methods (see paper for details). </p>
3D images of fossil planktonic foraminifera from the western Pacific Ocean: a database concerning two biostratigraphic events during the Early Pleistocene
<p>Here we present planktonic foraminifera X-ray images dataset during 1.72-2.15 million years ago using Microfocus X-ray CT (MXCT) and Projection X-ray Microscopy (PXM) technologies in a sedimentary core ODP Hole 1115B (9 11'S, 151 34E, water depth 1149 m) in the Solomon Sea. The species Globigeerinoideseela fistuolsa, Trilobatus sacculifer, and Pulleniatina spp. tests were hand-picked and gently cleaned for X-ray images. In total, there are 20 individuals with 20 images are presented in this dataset.-</p>
Supplementary materials for: Use and detection of a vitamin B1 degradation product yields new views of the marine B1 cycle and plankton metabolite exchange
<p>Vitamin B1 (thiamin) is a vital nutrient for most cells in nature including marine plankton. Early and recent experiments show that B1 degradation products instead of B1 can support the growth of marine bacterioplankton and phytoplankton. However, the use and occurrence of some degradation products remain uninvestigated – namely N-formyl-4-amino-5-aminomethyl-2-methylpyrimidine (FAMP) – which has been a focus of plant oxidative stress research. We investigated the relevance of FAMP in the ocean. Experiments and global ocean meta-omic data indicate that eukaryotic phytoplankton, including picoeukaryotes and harmful algal bloom species, use FAMP while bacterioplankton appear more likely to use deformylated FAMP, 4-amino-5-aminomethyl-2-methylpyrimidine (AmMP). Measurements of FAMP in seawater and biomass revealed that it occurs at picomolar concentrations in the surface ocean, heterotrophic bacterial cultures produce FAMP in the dark – indicating non-photodegradation of B1 by cells, and B1-requiring (auxotrophic) picoeukaryotic phytoplankton produce intracellular FAMP. Our results require an expansion of thinking about vitamin degradation in the sea, but also the marine B1 cycle – where it is now crucial to consider a new B1-related compound pool (FAMP) – as well as generation (dark degradation – likely via oxidation), turnover (plankton uptake), and exchange of the compound within networks of plankton.</p>
Data for: A size-based perspective on the decoupling between compositional and functional changes in planktonic communities
<p><span>Recent studies have shown a decoupling in the way community composition and functions respond to environmental changes</span><span>. A common pattern observed is that aggregated functions at the community level are more stable than community composition, which is likely the result of functional compensatory dynamics driven by interspecific differences in response to environmental change. However, the mechanisms by which these patterns emerge remain largely unexplored. Here, we investigated in a mesocosm experiment for four weeks the compositional and functional responses of edible phytoplankton (<64µm) and cladoceran zooplankton communities to climate warming (</span><span>a constant increase of +3.5°C plus heat wave</span><span>) and eutrophication (nutrient additions) from a size-based perspective. Our results show that warming increases small-sized taxa and decreases large-sized taxa within both phytoplankton and zooplankton community composition. We found that such opposite responses of different-sized taxa contributed to the stability of planktonic community functions and thereby resulted in a decoupling between compositional and functional changes. We also found that nutrient additions increased the abundance of all-sized algal taxa, while phytoplankton community function remained stable. Nutrient additions did not alter the zooplankton community, neither compositionally nor functionally. Under the combined stress of warming and nutrient additions, the compositional and functional responses of planktonic communities were mainly driven by warming. In a broader perspective, our findings reveal a size-dependent compensation mechanism and suggest that functional stability relies on compensatory effects among different-sized taxa, and it is therefore important that communities host a large range of taxa differing in size to withstand an increasingly more variable environment in the future.</span></p>
Input/Output files for 800-kyr planktonic 𝜹18O stack for the West Pacific Warm Pool
<p>Input and output files for an 11 core, planktonic d18O West Pacific Warm Pool stack constructed using alignment software BIGMACS.</p>
Data from: Bridging the extant and fossil record of planktonic foraminifera: implications for the Globigerina lineage
<p>Dataset for the biometric study on picked specimens of the planktonic foraminifer <em>Globigerina falconensis</em>. The individuals span the biozones M4 to PT1 from various locations worldwide. All specimens come from cored drill samples from IODP Site U1482, ODP Site 590, Meteor M32. Extra 33 samples are from a geological outcrop located in Siena Basin (Italy). All these data have been used for the paper entitled: Bridging the extant and fossil record of planktonic foraminifera: implications for the <em>Globigerina</em> lineage. </p>
Recovery of planktonic invertebrate communities in restored and created tidal marshes along the northern Gulf of Mexico
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Allen Brain Atlas
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DANDI Archive for NWB datasets
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International Brain Laboratory public data
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OpenNeuro
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