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27 results for “Deoxygenation”
Northeast Pacific deoxygenation and volcanism during the last deglaciation
<p><strong>File structure:</strong></p> <p><strong>Source data</strong></p> <ul> <li>Contains source data to main text and extended data figures. Data sources are identified within and listed below.</li> </ul> <p> </p> <p><strong>Computer codes</strong></p> <ul> <li><strong>Geochemical inversion</strong> –</li> </ul> <ul> <li>“Data for geochemical inversion.xlsx”: contains Gulf of Alaska sediment and volcanic/terrigenous endmember geochemical data used for data inversion.</li> <li>“geochemical inversion.r”: R script used to perform geochemical inversion.</li> <li>“GOA inversion fraction.csv”: Result of the geochemical inversion, including the volcanic and terrigenous fractions in each Gulf of Alaska sediment sample.</li> <li>“GOA inversion residual.csv”: Result of the geochemical inversion, including the residuals of each element.</li> <li><strong>cluster volcanic geochemical data </strong>– <ul> <li> “Database of volcanic geochemistry.xlsx”: compiled database of the geochemistry of volcanic endmember samples.</li> <li> “cluster.r”: R script used to perform cluster analysis on the volcanic samples.</li> <li> “Clustered volcanic data.csv”: the results of cluster analysis.</li> <li> “Dendroplot.r”: R script used to plot the dendrogram for the cluster analysis.</li> <li> “dendro 15 complete euclidean.pdf”: The dendrogram.</li> <li> “Volcanic endmembers.csv”: final geochemical volcanic endmembers based on the cluster analysis.</li> </ul> </li> </ul> <p> </p> <ul> <li><strong>Global volcanic eruption compilation –</strong></li> </ul> <ul> <li>“eruption.database.intcal20.xlsx”: This file includes the eruption database compiled by this study, as well as the previous compilation of Huybers and Langmuir 2009 EPSL (referred to as HL09).</li> <li>“eruption.ratio.R” and “volc.freq.R”: These are R scripts that compute the eruption frequency of glaciated and unglaciated volcanoes using the eruption database. “eruption.ratio.R”calls the function inside “volc.freq.R”.</li> <li>“Volcanic eruption summary.xlsx”: This file contains the outputs of the R scripts.</li> </ul> <p> </p> <ul> <li><strong>PISM sensitivity experiment – </strong></li> </ul> <ul> <li>“ciscyc.5km.epica.ts.10a.nc” and other netcdf files: The output of PISM sensitivity experiments, from <em>Seguinot. (2020). Cordilleran ice sheet glacial cycle simulations continuous variables [Data set]. Zenodo. <a href="https://doi.org/10.5281/zenodo.3606536">https://doi.org/10.5281/zenodo.3606536</a></em>. Click the link to see the documentation of these files.</li> <li>“temperature timeseries.xlsx”: the temperature forcing used in the sensitivity experiments.</li> <li>“PISM sensitivity.r”: R script used to analyse the PISM sensitivity experiments, including data binning, lag correlation and regression between ice sheeting response and temperature forcing.</li> <li>“PISM sensitivity.xlsx”: Output of the R script.</li> <li>“GOA.calibration.csv”: SST record from the Gulf of Alaska site 85JC/U1419, calibrated using bayspline.</li> <li>“GOA.Ensemble.csv”: 1000 ensemble output of the bayspline calibration.</li> <li>“predict ice volume SST.r”: R script used to predict the response of CIS ice volume to GOA SST forcing. The script will call the results of PISM sensitivity experiments in “PISM sensitivity.xlsx” and the GOA SST forcing in “GOA.calibration.csv” and “GOA.calibration.csv”.</li> <li>“PISM ice vol GOA SST.csv”: predicted PISM ice vol based on GOA SST forcing and taking into account all sensitivity experiments and the uncertainty in SST reconstruction.</li> <li>“PISM ice vol GOA SST model.csv”: predicted PISM ice vol based on GOA SST forcing based on each sensitivity experiment and the uncertainty in SST reconstruction.</li> </ul> <p> </p> <p><strong>Please cite the following studies when using the data, in addition to citing the present study:</strong></p> <p><strong>GOA age model, IRD and MAR:</strong></p> <p>Walczak, M. H. et al. Phasing of millennial-scale climate variability in the Pacific and Atlantic Oceans. Science 370, 716–720 (2020).</p> <p>Velle, J. H. et al. High resolution inclination records from the Gulf of Alaska, IODP Expedition 341 Sites U1418 and U1419. Geophys. J. Int. 229, 345–358 (2022).</p> <p>Heaton, T. J. et al. Marine20—The Marine Radiocarbon Age Calibration Curve (0–55,000 cal BP). Radiocarbon 62, 779–820 (2020).</p> <p><strong>GOA SST: </strong></p> <p>Praetorius, S. K. et al. North Pacific deglacial hypoxic events linked to abrupt ocean warming. Nature 527, 362–366 (2015).</p> <p>Romero, O. E., LeVay, L. J., McClymont, E. L., Müller, J. & Cowan, E. A. Orbital and Suborbital-Scale Variations of Productivity and Sea Surface Conditions in the Gulf of Alaska During the Past 54,000 Years: Impact of Iron Fertilization by Icebergs and Meltwater. Paleoceanogr. Paleoclimatology 37, e2021PA004385 (2022).</p> <p>Tierney, J. E. & Tingley, M. P. BAYSPLINE: A New Calibration for the Alkenone Paleothermometer. Paleoceanogr. Paleoclimatology 33, 281–301 (2018).</p> <p><strong>GOA benthic foraminifera assemblage:</strong></p> <p>Belanger, C. L., Sharon, Du, J., Payne, C. R. & Mix, A. C. North Pacific deep-sea ecosystem responses reflect post-glacial switch to pulsed export productivity, deoxygenation, and destratification. Deep Sea Res. Part Oceanogr. Res. Pap. 164, 103341 (2020).</p> <p>Sharon, Belanger, C., Du, J. & Mix, A. Reconstructing Paleo-oxygenation for the Last 54,000 Years in the Gulf of Alaska Using Cross-validated Benthic Foraminiferal and Geochemical Records. Paleoceanogr. Paleoclimatology 36, e2020PA003986 (2021).</p> <p><strong>GOA productivity:</strong></p> <p>Romero, O. E., LeVay, L. J., McClymont, E. L., Müller, J. & Cowan, E. A. Orbital and Suborbital-Scale Variations of Productivity and Sea Surface Conditions in the Gulf of Alaska During the Past 54,000 Years: Impact of Iron Fertilization by Icebergs and Meltwater. Paleoceanogr. Paleoclimatology 37, e2021PA004385 (2022).</p> <p>Addison, J. A. et al. Productivity and sedimentary δ15N variability for the last 17,000 years along the northern Gulf of Alaska continental slope. Paleoceanography 27, PA1206 (2012).</p> <p><strong>GOA bulk sediment neodymium isotopes:</strong></p> <p>Du, J., Haley, B. A., Mix, A. C., Walczak, M. H. & Praetorius, S. K. Flushing of the deep Pacific Ocean and the deglacial rise of atmospheric CO 2 concentrations. Nat. Geosci. 11, 749–755 (2018).</p> <p><strong>GOA volcanic endmember data compilation:</strong></p> <p>Cameron, C. E., Snedigar, S. F. & Nye, C. J. Alaska Volcano Observatory geochemical database. DDS 8 http://www.dggs.alaska.gov/pubs/id/29120 (2014) doi:10.14509/29120.</p> <p>Sarbas, B., Jochum, K. P., Nohl, U. & Hofmann, A. W. GEOROC, the MPI geochemical rock database: a new tool for geochemists. Eos Trans. AGU 80, F1184 (1999).</p> <p><strong>Global and regional volcanic eruption data compilation:</strong></p> <p>Huybers, P. & Langmuir, C. Feedback between deglaciation, volcanism, and atmospheric CO2. Earth Planet. Sci. Lett. 286, 479–491 (2009).</p> <p>Global Volcanism Program, 2013. Volcanoes of the World, v. 4.8.7. 10.5479/si.GVP.VOTW4-2013. (2013).</p> <p>Bryson, R. U., Bryson, R. A. & Ruter, A. A calibrated radiocarbon database of late Quaternary volcanic eruptions. EEarth Discuss 1, 123–134 (2006).</p> <p>Watt, S. F. L., Pyle, D. M. & Mather, T. A. The volcanic response to deglaciation: Evidence from glaciated arcs and a reassessment of global eruption records. Earth-Sci. Rev. 122, 77–102 (2013).</p> <p>Crosweller, H. S. et al. Global database on large magnitude explosive volcanic eruptions (LaMEVE). J. Appl. Volcanol. 1, 4 (2012).</p> <p>Cameron, C. E., Snedigar, S. F. & Nye, C. J. Alaska Volcano Observatory geochemical database. DDS 8 http://www.dggs.alaska.gov/pubs/id/29120 (2014) doi:10.14509/29120.</p> <p>Praetorius, S. et al. Interaction between climate, volcanism, and isostatic rebound in Southeast Alaska during the last deglaciation. Earth Planet. Sci. Lett. 452, 79–89 (2016).</p> <p>Wilcox, P. S. et al. A new set of basaltic tephras from Southeast Alaska represent key stratigraphic markers for the late Pleistocene. Quat. Res. 92, 246–256 (2019).</p> <p>Davies, L. J., Jensen, B. J. L., Froese, D. G. & Wallace, K. L. Late Pleistocene and Holocene tephrostratigraphy of interior Alaska and Yukon: Key beds and chronologies over the past 30,000 years. Quat. Sci. Rev. 146, 28–53 (2016).</p> <p><strong>GIA models:</strong></p> <p>Roy, K. & Peltier, W. R. Relative sea level in the Western Mediterranean basin: A regional test of the ICE-7G_NA (VM7) model and a constraint on late Holocene Antarctic deglaciation. Quat. Sci. Rev. 183, 76–87 (2018).</p> <p>Lambeck, K., Purcell, A. & Zhao, S. The North American Late Wisconsin ice sheet and mantle viscosity from glacial rebound analyses. Quat. Sci. Rev. 158, 172–210 (2017).</p> <p><strong>PISM sensitivity experiments and temperature forcing:</strong></p> <p>Seguinot, J., Rogozhina, I., Stroeven, A. P., Margold, M. & Kleman, J. Numerical simulations of the Cordilleran ice sheet through the last glacial cycle. The Cryosphere 10, 639–664 (2016).</p> <p>Seguinot. (2020). Cordilleran ice sheet glacial cycle simulations continuous variables [Data set]. Zenodo. https://doi.org/10.5281/zenodo.3606536</p> <p>Dansgaard, W. et al. Evidence for general instability of past climate from a 250-kyr ice-core record. Nature 364, 218–220 (1993).</p> <p>Andersen, K. K. et al. High-resolution record of Northern Hemisphere climate extending into the last interglacial period. Nature 431, 147–151 (2004).</p> <p>Jouzel, J. et al. Orbital and Millennial Antarctic Climate Variability over the Past 800,000 Years. Science 317, 793–796 (2007).</p> <p>Petit, J. R. et al. Climate and atmospheric history of the past 420,000 years from the Vostok ice core, Antarctica. Nature 399, 429–436 (1999).</p> <p>Herbert, T. D. et al. Collapse of the California Current During Glacial Maxima Linked to Climate Change on Land. Science 293, 71–76 (2001).</p> <p><strong>Be10 data compilation:</strong></p> <p>Lesnek, A. J., Briner, J. P., Baichtal, J. F. & Lyles, A. S. New constraints on the last deglaciation of the Cordilleran Ice Sheet in coastal Southeast Alaska. Quat. Res. 96, 140–160 (2020).</p> <p>Haeussler, P. J. et al. Late Quaternary deglaciation of Prince William Sound, Alaska. Quat. Res. 1–20 (2021) doi:10.1017/qua.2021.33.</p> <p>Walcott, C. K., Briner, J. P., Baichtal, J. F., Lesnek, A. J. & Licciardi, J. M. Cosmogenic ages indicate no MIS 2 refugia in the Alexander Archipelago, Alaska. Geochronology 4, 191–211 (2022).</p> <p>Briner, J. P. et al. The last deglaciation of Alaska. Cuad. Investig. Geográfica 43, 429–448 (2017).</p> <p>Tulenko, J. P., Briner, J. P., Young, N. E. & Schaefer, J. M. Beryllium-10 chronology of early and late Wisconsinan moraines in the Revelation Mountains, Alaska: Insights into the forcing of Wisconsinan glaciation in Beringia. Quat. Sci. Rev. 197, 129–141 (2018).</p> <p>Menounos, B. et al. Cordilleran Ice Sheet mass loss preceded climate reversals near the Pleistocene Termination. Science 358, 781–784 (2017).</p> <p>Dulfer, H. E., Margold, M., Engel, Z., Braucher, R. & Team, A. Using 10Be dating to determine when the Cordilleran Ice Sheet stopped flowing over the Canadian Rocky Mountains. Quat. Res. 102, 222–233 (2021).</p> <p>Lesnek, A. J., Briner, J. P., Lindqvist, C., Baichtal, J. F. & Heaton, T. H. Deglaciation of the Pacific coastal corridor directly preceded the human colonization of the Americas. Sci. Adv. 4, eaar5040 (2018).</p> <p>Tulenko, J. P., Briner, J. P., Young, N. E. & Schaefer, J. M. The last deglaciation of Alaska and a new benchmark 10Be moraine chronology from the western Alaska Range. Quat. Sci. Rev. 287, 107549 (2022).</p>
Data and scripts used in "Atlantic Equatorial Undercurrent intensification counteracting warming induced deoxygenation"
<p>This file contains data and scripts for "Atlantic Equatorial Undercurrent intensification counteracting warming induced deoxygenation“.</p> <p>Data:</p> <ul> <li>Physical oceanography (CTD) during Meteor cruise M158</li> <li>ADCP current measurements (38 and 75 kHz) during Meteor cruise M158</li> <li>wind products (ASCAT, CCMP, JRA55do, QuikSCAT)</li> <li>Data of the mean 23W ship section between 5S-14N</li> <li>Velocity data from moored ADCP at 23W, 0N</li> <li>Velocity data from 25 individual ship sections along 23W</li> </ul> <p>For the scripts leading to Figures 1 to 3 see subdirectories:</p> <ul> <li>figure01/</li> <li>figure02/</li> <li>figure03/</li> </ul> <p>For further information on executable scripts and available data, please see the "Readme.txt" documents in the different subdirectories.</p> <p> </p>
Data from 'Deoxygenation lowers thermal threshold of coral bleaching.'
<p>Increasing exposure to deoxygenation as a result of climate warming and localised pollution is emerging as an important contributing factor for widespread coral bleaching and mortality. Some corals have been observed to thrive under multiple extreme conditions including very low O<sub>2</sub> levels and high temperatures yet the combined effects of heating and deoxygenation on coral bleaching susceptibility remain unknown. Here, we incorporated deoxygenated seawater into short-term heat assays (CBASS) to show that deoxygenation can lower the thermal limit of an <em>Acropora</em> coral species. </p> <p>Data files provided:</p> <p>'CBASS_deoxy_ref_transcriptome.fasta' contains the reference transcriptome assembled <em>de novo</em> using SOAPdenovo-Trans using non-bleached samples of the CBASS assay (i.e., 30°C and 33°C) and then filtered to keep only reads ≥ 500 bp in length (20,115 contigs).</p> <p>'CBASS_deoxy_BIS_photos_Initial_and_poststress.pdf' contains images of coral fragments alongside a colour reference chart for estimating bleaching index scores (BIS) before experiment starts (initial) and post 6hr stress phase. Sample IDs are denoted as: H0/HH = normoxia/deoxygenation treatment, 30/33/36/39 = temperature in °C, T1 = time point 1, R1/2/3/4 = replicate 1/2/3/4.</p> <p>'CBASS_deoxy_SymPortal_output_files.zip' contains all SymPortal (https://symportal.org) output files.</p>
Widespread deoxygenation of temperate lakes: companion dataset 1980 - 2017
Lake surface temperatures are steadily increasing. DO responds to temperature through multiple mechanisms, suggesting that DO in lakes should be responding to changing water temperatures. To determine whether and how DO is changing in temperate lakes, we collected and analyzed 22,983 temperature and dissolved oxygen profiles from approximately 400 mostly temperate zone lakes. Here, we present resulting derived statistics from this analysis. These statistics include mean summer epilimnetic temperature and DO, hypolimnetic temperature and DO, Secchi depth, chlorophyll a, as well as select meteorological variables such as mean summer air temperature and wind speed.
Transgenerational exposure to deoxygenation and warming disrupts mate detection in Gammarus locusta
<p class="s4"><span class="s9">Ocean deoxygenation and warming have been shown to pose a growing threat to the health of marine organisms and ecosystems. Yet, the potential for acclimation and adaptation remains poorly understood. The aim of this study was to evaluate the effects of transgenerational exposure to reduced oxygen availability and elevated seawater temperature on the chemosensory-dependent mating mechanisms of male amphipods </span><span class="s10"><em>Gammarus</em> <em>locusta</em></span><span class="s9">. Three subsequent generations were exposed to four experimental treatments for 30 days: i) present-day scenario, ii) warming; iii) deoxygenation; and iv) warming+deoxygenation. After exposure, the number of individuals that reached adulthood was gauged, and adult males from F<sub>0</sub> and F<sub>1</sub> were subjected to behavioral trials to assess their capacity of long-distance female cue detection through quantification of response time, first direction of movement, activity rate, and proportion of time spent in female scent cues. Ocean-warming-induced mortality and reduced oxygen availability had adverse effects on each of the investigated behavioral traits, which were amplified when combined with elevated temperature. Still, when compared to F<sub>0</sub>, the F<sub>1</sub> generation demonstrated more adaptability (i.e., higher activity rate and preference for female odors) to the combination of the two stressors, suggesting positive carry-over effects. Nevertheless, full recovery to control levels was not observed. Altogether, this study indicates that future scenarios of ocean deoxygenation and warming have the potential to disrupt chemosensory-dependent mate detection in amphipods, but also suggests possible behavioral adaptations. We call for greater research efforts on long-term impacts of ocean change on the behavioral and physiological processes of benthic coastal communities.</span></p>
"LARVAL FISH HABITATS AND DEOXYGENATION IN THE NORTHERN LIMIT OF THE OXYGEN MINIMUM ZONE OFF MEXICO"
<p>Dataset associated with the submitted publication - "LARVAL FISH HABITATS AND DEOXYGENATION IN THE NORTHERN LIMIT OF THE OXYGEN MINIMUM ZONE OFF MEXICO"</p> <p>Created: 10/10/2019 by Victor M. Godínez (CICESE). Ver. 1.0</p> <p>Authors: Laura Sánchez-Velasco, Victor M. Godínez, Erick D. Ruvalcaba-Aroche, Amaru Márquez-Artavia, Emilio Beier, Eric D. Barton and S. Patricia A. Jiménez-Rosenberg.<br> Project_info: This data base has been obtained during the project funded by the financial support of SEP-CONACyT (contracts 2014-236864, L. Sanchez-Velasco) and Fronteras de la Ciencia-CONACyT (contracts 2015-2-280, L. Sanchez-Velasco).<br> License: The authors appreciate that users of these data: 1) Contact Laura Sánchez-Velasco (lsvelasc@gmail.com) to follow the uses of the data, and 2) Include the requested acknowledgment (cite using the DOI of this dataset) in any presentations or publications.</p> <p>Variables:<br> five structures for the four surveys (Survey_Feb2010, Survey_Apr2012, Survey_Jun2015, Survey_Mar2016, Survey_Oct2017) with the following variables:<br> Name Units<br> ___________ ________<br> 'Latitude' 'degrees'<br> 'Longitude' 'degrees'<br> 'XX' 'Distance (km)'<br> 'YY' 'Distance (m)'<br> 'Pressure' 'decibars'<br> 'Temperature' 'conservative temperature (oC)' <br> 'Salinity' 'Absolute Salinity (g/Kg)'<br> 'Oxigen' 'dissolved oxygen (mL/L)'<br> 'Fluorescence' '(mg/m^3)'<br> 'xlar' 'Distance (km)' <br> 'ylar' 'Distance (m)'<br> 'Bb' 'Bregmaceros bathymaster (Larvae/10m^2)'<br> 'Bp' 'Benthosema panamense (Larvae/10m^2)'<br> 'Dl' 'Diogenichthys laternatus (Larvae/10m^2)'<br> 'Asp' 'Auxis spp (Larvae/10m^2)'</p> <p><br> One structures for the oldest data with the following variables:<br> Name Units<br> ___________ ________<br> 'Latitude' 'degrees'<br> 'Longitude' 'degrees'<br> 'Time' 'absolute julian day'<br> 'Pressure' 'decibars'<br> 'Temperature' 'conservative temperature (oC)' <br> 'Salinity' 'Absolute Salinity (g/Kg)'<br> 'Oxigen' 'dissolved oxygen (mL/L)</p>
Simulation data for "Artificial Downwelling/Upwelling Could Mitigate Deoxygenation in the Western Subarctic North Pacific "
<p>Uvic model results used in the paper "Artificial Downwelling/Upwelling Could Mitigate Deoxygenation in the Western Subarctic North Pacific " to creat all figures and tables. Netcdf files with prefix "tsi" are annual global averaged output for all 2D and 3D variables used in the UVic model; Mat files with prefix "tavg" are annual results of selected tracers; Mat files with prefix "tbt" are annual results of oxygen tracer balance terms. Note that the raw model output ncfiles can be obtained by contacting cbxiao@zju.edu.cn.</p> <p>Code modified to simulate AD and AU is also available in "modified UVic code.rar".</p>
Declining bivalve species and functional diversity along a coastal eutrophication-deoxygenation gradient in the northern Gulf of Mexico
Open the record for dataset details and reuse information.
Transgenerational exposure to deoxygenation and warming disrupts mate detection in Gammarus locusta
Open the record for dataset details and reuse information.
Cyclic voltammograms of the HRP-AuNCs/SWCNTs/CFUME (A), HRP/SWCNTs/CFUME (B), SWCNTs/CFUME (C), HRP-AuNCs/CFUME (D), HRP/CFUME (E) and CFUME (F) in 0.01 M pH 7.0 deoxygenated PBS in the absence of H2O2 (a) and presence of 0.01 mM (b) and 0.03 mM (c). Scan rate =100 mV/s.
<p>In order to explore the electrocatalytic activity of HRP on the modified electrode, its response to the reduction of H<sub>2</sub>O<sub>2</sub> was studied. As shown in F.S2, with the addition of H<sub>2</sub>O<sub>2</sub>, the electrochemical behavior of HRP-AuNCs immobilized electrode changes dramatically. The reduction peak current increases obviously, while the oxidation peak current decreases with increasing the concentration of H<sub>2</sub>O<sub>2</sub> (F.S2 A), showing a typical electrocatalytic reduction process of H<sub>2</sub>O<sub>2</sub>. However, no similar cathodic peak corresponding to the reduction of H<sub>2</sub>O<sub>2</sub> can be observed at HRP/MWCNTs/CFUME (B), MWCNTs/CFUME (C), HRP-AuNCs/CFUME (D), HRP/CFUME (E) and bare CFUME (F). These results indicate AuNCs synthesized in HRP can effectively promote electron transfer between enzyme and electrode, which can give the ideal performance for reduction based H<sub>2</sub>O<sub>2</sub> detection.</p>
Acceleration of warming, deoxygenation and acidification in the Arabian Gulf driven by weakening of summer winds
<p>This archive contains netCDF files corresponding to datasets used in the Geophysical Research Letters paper titled<br>"Acceleration of warming, deoxygenation and acidification in the Arabian Gulf driven by weakening of summer winds" by Zouhair Lachkar, Michael Mehari, Francesco Paparella and John A. Burt.</p> <p>The data is in standard netCDF file format, which is readily readable using standard netCDF tools. Variables, dimensions and units are described in the netcdfs metadata.</p>
Data for Recovery from microplastic-induced marine deoxygenation may take centuries
<p>Data to accompany the revised manuscript Recovery from microplastic-induced marine deoxygenation may take centuries by K. Kvale and A. Oschlies</p>
Recent Deoxygenation of Patagonian Fjord Subsurface Waters Connected to the Peru–Chile Undercurrent and Equatorial Subsurface Water Variability
<p>The dataset included the time series of Conservative Temperature, Absolute Salinity, Dissolved oxygen, and marine current published in this manuscript.</p>
Data from: Ocean deoxygenation caused non-linear responses in the structure and functioning of benthic ecosystems
<p><span>The O<sub>2 </sub>content of the global ocean has been declining progressively over the past decades, mainly because of human activities and global warming. Nevertheless, how long-term deoxygenation affects macrobenthic communities, sediment biogeochemistry and their mutual feedback remains poorly understood. Here, we evaluate the response of the benthic assemblages and biogeochemical functioning to decreasing O<sub>2 </sub>concentrations along the persistent bottom-water dissolved O<sub>2</sub> gradient of the Estuary and Gulf of St. Lawrence (QC, Canada). We report several of non-linear biodiversity and functional responses to decreasing O<sub>2</sub> concentrations, and identify an O<sub>2</sub> threshold that occurs at approximately at 63 µM. Below this threshold, macrobenthic community assemblages change, and bioturbation rates drastically decrease to near zero. Consequently, the sequence of electron acceptors used to metabolize the sedimentary organic matter is squeezed towards the sediment surface while reduced compounds accumulate closer (as much as 0.5 to 2.5 cm depending on the compound) to the sediment-water interface. Our results illustrate the capacity of bioturbating species to compensate for the biogeochemical consequences of hypoxia and can help to predict future changes in benthic ecosystems.</span></p>
Slow Chest Compression on Dynamic Hyperinflation, Dyspnea and Peripheral Muscle Deoxygenation in Patients With COPD
ClinicalTrials.gov study NCT02746536. IPD Sharing: YES. Countries: 1. Publications: 8.
Prioritization of Cerebral Deoxygenation in Severe Traumatic Brain Injury and Mortality Benefit.
ClinicalTrials.gov study NCT06306950. IPD Sharing: NO. Countries: 1. Publications: 7.
Data from: Ocean deoxygenation caused non-linear responses in the structure and functioning of benthic ecosystems
Open the record for dataset details and reuse information.
Eutrophication and deoxygenation drive high methane emissions from a brackish coastal system
<p>Data presented in the article "<span>Eutrophication and deoxygenation drive high methane emissions from a brackish coastal system </span>".</p>
Machine learning algorithm reveals surface deoxygenation in the Agulhas Current due to warming
<p>This file contains ML – random forest constructed oxygen in the Agulhas Current.</p>
N2O production under deoxygenation and warming in Chesapeake Bay
<p>The dataset - "N2O production under deoxygenation and warming in Chesapeake Bay" presents measurements of N2O production rates under experimentally manipulated oxygen and temperature changes in Chesapeake Bay - the largest estuary in the United States. The sampling stations and biogeochemical properties of the sampling stations are also included in the dataset.</p> <p>Obervations of N2O concentrations from previous studies and from this study have been compiled into the dataset called "N2O concentration observations in Chesapeake Bay".</p> <p>Please refer to the paper below for details: </p> <p>Tang, W., Da, F., Tracey, J. C., Intrator, N., Kunes, M. A., Lee, J. A., ... & Ward, B. B. (2024). Nutrient management offsets the effect of deoxygenation and warming on nitrous oxide emissions in a large US estuary. <em>Science Advances</em>, <em>10</em>(51), eadq5014. <a href="https://doi.org/10.1126/sciadv.adq5014">DOI: 10.1126/sciadv.adq5014</a></p>
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Annotated Behaviour and Observability Dataset (ABODe)
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