cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.26008/1912/bco-dmo.984974.1
title: Dissolved organic carbon concentrations in seawater samples collected from Project &quot;DaVINCi&quot; incubations in the Gulf of Naples, Italy from April to May 2022

description: Dissolved organic carbon concentrations were measured in 0.2-micrometer-filtered seawater collected from nutrient amendment incubation experiments conducted on surface water collected at the Long-Term Ecological Monitoring Station, MareChiara, in the Gulf of Naples, Italy, between April 20 and May 19, 2022. These incubations were part of a field study on &quot;Diatom Virus Infection of Natural Communities&quot; (DaVINCi) and were aimed at understanding the role of silicon limitation in driving diatom viral infection and lysis.
DOI: 10.26008/1912/bco-dmo.962418.1
title: Vertical profiles and attenuation coefficients during intense blooms in the Lower York River Estuary between August 2021 and September 2022.

description: The dinoflagellates Margalefidinium polykrikoides and Alexandrium monilatum form intense summer blooms in the lower York River Estuary (LYRE), typically from late July through mid-September.  While surface concentrations of chlorophyll-a during these blooms are well-documented, we lack information on the vertical distribution of biomass in bloom patches.  Both species are known to vertically migrate and accumulate near the surface at midday.  We also lack direct measurements of light attenuation through intense bloom patches for comparison to attenuation through the background phytoplankton assemblage.  We conducted vertical profiles of water column structure, phytoplankton chlorophyll-a, and irradiance on five dates during these intense summer blooms in the LYRE.  Ten to twelve stations were occupied on each date spanning a wide range of bloom densities, including background stations outside of bloom patches.  Profiles were used to determine the vertical distribution of bloom biomass, while irradiance measurements were used to compute the vertical attenuation coefficient as a function of bloom chlorophyll-a biomass, determined from laboratory extraction of surface samples.
DOI: 10.26008/1912/bco-dmo.984553.1
title: Carbonate rock macrofauna collected by HOV Alvin during R/V Atlantis cruise AT50-24 at Sanak Seep Alaska from May 30 to June 6, 2024

description: Quantitative counts of macrofauna (identified to major taxa) inhabiting authigenic carbonates were conducted at Sanak Seep in the Aleutian Islands (53.74853°N, 162.5889°W) at 2020 meters depth. Rock samples were collected by the HOV Alvin submersible during the R/V Atlantis AT50-24 cruise (Chief Scientist Lisa Levin) at the methane seep site between May 30 and June 4, 2024. Samples were collected using HOV Alvin using the manipulator and were placed in isolated biobox compartments. Samples were preserved and the analyzed at the University of California-San Diego Scripps.
DOI: 10.26008/1912/bco-dmo.962330.1
title: Pelagic primary production and respiration in the York River Estuary sampled in 2018-2021.

description: We measured pelagic primary production and respiration in the York River Estuary (YRE), a tributary of Chesapeake Bay, over two annual cycles (2018-19) and during two late-summer periods (2020-21) characterized by intense blooms of the dinoflagellates Margalefidinium polykrikoides and Alexandrium monilatum. During 2018-19, water was collected bimonthly from channel stations along the axis of the YRE. During 2020 and 2021, water was collected approximately weekly at stations inside and outside of bloom patches (n=3 each) in late summer in the lower YRE. Water was incubated across the full range of surface irradiance at in situ temperatures in a light gradient box. Metabolic rates were computed as the change in dissolved oxygen over the course of the incubations (1-3 hours in the light; overnight in the dark) as measured with Hach luminescent dissolved oxygen sensors. Data were used to construct photosynthesis-irradiance (P-I) curves that were combined with hourly surface irradiance, light attenuation, and estuarine bathymetry to compute vertically-integrated, daily rates. This dataset includes measured turbidity, extracted chlorophyll-a, and measured salinity, which were used to compute the vertical attenuation coefficient, statistically-determined P-I parameters normalized to measured chlorophyll-a, and vertically-integrated, daily rates of gross primary production and respiration.
DOI: 10.26008/1912/bco-dmo.962507.1
title: Watershed concentrations of dissolved inorganic carbon, dissolved organic carbon, and particulate organic carbon in the York River Estuary sampled in 2019-2021.

description: We measured the concentrations of dissolved inorganic carbon (DIC), dissolved organic carbon (DOC), and particulate organic carbon (POC) at four stations in the Pamunkey and Mattaponi Rivers, the main freshwater sources to the York River Estuary (YRE), approximately monthly from April 2019 to December 2019, and on selected dates during 2020 and 2021 to capture a wide range of discharge conditions.  Sampling locations included the USGS non-tidal gauging stations above the fall line on each river, and a station in the tidal fresh region of each river, approximately halfway between the gauges and the confluence of the two rivers at the head of the YRE.  Samples were collected to assess variation in each carbon species with freshwater discharge, changes in concentrations in the tidal fresh zone of the estuary, and carbon loading to the YRE.
DOI: 10.26008/1912/bco-dmo.984699.1
title: C and N stable isotope data for invertebrates collected by HOV Alvin during R/V Atlantis cruise AT50-24 at Sanak Seep Alaska from May 16 to June 5, 2024

description: This dataset provides C and N stable isotope data for invertebrates collected by HOV Alvin in May-June 2024 during R/V Atlantis cruise AT50-24 at methane seeps on the Aleutian margin off Alaska. There are also POM data for surface and near-bottom water samples collected by CTD. δ13C and δ15N measurements were made on 0.2-4 mg dry-weight samples combusted using an elemental analyzer interfaced to a continuous flow isotope ratio mass spectrometer at the Stable Isotope Facility at the University of California, Davis (SIF-UCD).
DOI: 10.26008/1912/bco-dmo.904195.2
title: Environmental temperature data collected at Cerro Mundo Bay, San Cristobal, Galapagos from 2022-2024 (Galapagos 2021 project)

description: Increased standing macroalgal biomass in upwelling zones is generally assumed to be the result of higher nutrient flux due to upwelled waters, However, other factors can strongly impact macroalgal communities. For example, herbivory and temperature, via their effects on primary producers and the metabolic demands of consumers, can also influence macroalgal biomass and productivity, respectively. Although there is a fair number of studies looking at the interactive effects of herbivores and nutrients in both tropical and temperate regions, there is a lack of studies looking at these effects in tropical or subtropical upwelling regions. The purpose of this study was to measure the effects that herbivores, temperature, and nutrient availability have on standing macroalgal biomass. We manipulated nutrient availability and herbivory in six field experiments during contrasting productivity and thermal regimes (cool-upwelling and warm, non-upwelling season) on a subtidal nearshore rocky reef. 

Here, we present a set of temperature (°C) data collected at Cerro Mundo Bay, San Cristobal, Galapagos from September 2022 to August 2024. The environmental temperature was recorded every 10 minutes using a HOBO Water Temperature pro V2 Data Logger (Onset®) attached to the seafloor at a 10 meters depth mark.
DOI: 10.26008/1912/bco-dmo.959971.1
title: Energy reserve and stable isotope data from 3 species of Australian coral exposed to increased temperature and nutrients treatment in 2008

description: In this project, we tested the effects of elevated temperature and moderate nutrients for 21 days during the winter on Montipora monasteriata, Acropora muricata, and Pocillopora damicornis in a fully factorial experiment with two seawater temperatures (average winter temperature of 20°C and projected winter temperature later this century of 24°C) and two nutrient levels (ambient nutrients at 1.28 μmol L-1 NO3- and 0.14 μmol L-1 PO4-3, and moderate nutrients at 5.44 μmol L-1 NO3- and 0.36 μmol L-1 PO4-3). 

This dataset includes coral and endosymbiont tissue δ15N, δ13C, coral energy reserves (protein, lipid, carbohydrates), and temperature data. The experiment was conducted in collaboration with Dr. Kenneth Anthony at the University of Queensland at Heron Island, Australia. These data were collected by Dr. Stephen Levas at The Ohio State University and The University of Wisconsin - Whitewater.
DOI: 10.26008/1912/bco-dmo.969228.1
title: Metagenome profiles of common emergent Caribbean sponges collected from temporary artificial reef in the Florida Keys, USA in Jan 2022

description: Sponges are prevalent on Caribbean coral reefs and are important filter-feeders that can influence seawater nutrient composition. This study examined the metagenome profiles of sponge species that were also used for examination of nutrient processing. The metagenome profiles (BioProject PRJNA1256488) showed convergence in several nitrogen pathways (e.g., dissimilatory, assimilatory nitrate reduction, denitrification) but differences in the taxonomic composition of those pathways. Additional analysis of the metagenome profiles is ongoing. Included in this dataset are accession information, collection metadata, and sample preparation data for common emergent Caribbean sponges collected from temporary artificial reef in the Florida Keys in January 2022.
DOI: 10.26008/1912/bco-dmo.970532.1
title: Peroxide quantification in Thalassia testudinum tissue and response to pathogenic Labyrinthula in seagrass collected February 2024 in Tampa Bay, Florida

description: This dataset presents results of peroxide assays and concentrations of hydrogen peroxide from seagrass tissue. While seagrass serve as a vital foundation species in many coastal ecosystems, investigations of marine host-pathogen interactions continue to be underexplored and provide insights into the biological factors leading to seagrass die-offs. Infection of the marine subtropical seagrass Thalassia testudinum (Banks ex König) by pathogenic Labyrinthula sp. was found to induce alterations to the host’s oxidative metabolism over the early stages of infection (monitored over a 72-hr time course). In planta hydrogen peroxide levels provided supporting evidence of a coordinated hypersensitive response in the host plant following infection by the etiological agent of seagrass wasting disease, pathogenic Labyrinthula sp.
DOI: 10.26008/1912/bco-dmo.982183.1
title: Prey Engulfment as the Dominant Pathway of Methylmercury Uptake in a Heterotrophic Dinoflagellate Experiment

description: These data include all relevant analyses from methylmercury (MeHg) uptake experiments utilizing the heterotrophic dinoflagellate Oxyrrhis marina (urn:lsid:marinespecies.org:taxname:109902), varying salinity, temperature, and dissolved organic matter (DOM) source – including heat-killed O. marina. The goal of these experiments was to determine whether uptake from the dissolved phase or prey engulfment would contribute more to cellular MeHg accumulation. All experimental treatments were triplicated and had a control with no added MeHg.
 
These studies support the following hypotheses: MeHg uptake is higher in the presence of phytoplankton prey, uptake is significantly lower at a low salinity (11 compared to 17 and 34), and temperature (at 12, 15, and 22°C) has no effect on MeHg uptake.
DOI: 10.26008/1912/bco-dmo.982223.1
title: Dissolved radium from STING I Cruise AE2305 on R/V Atlantic Explorer and STING II Cruise EN704 on R/V Endeavor and U.S. Geological Survey small boat surveys in the Gulf of Mexico from Feb to Jul 2023

description: Activities of dissolved radium (Ra-223, Ra-224, Ra-226, Ra-228), Th-228, and Ac-227, collected on two cruises in the Gulf of Mexico. STING I cruise AE2305 on R/V Atlantic Explorer was deployed from February to March 2023. STING II consisted of EN704 on R/V Endeavor and U.S. Geological Survey small boat surveys and took place from June to July 2023. This project investigates how boundary sources, including rivers and submarine groundwater discharge, deliver important nutrients and metals to the coastal ecosystems of the West Florida Shelf. Here, dissolved radium and parent isotopes have been measured to trace boundary sources of nutrients and metals entering the West Florida Shelf.
DOI: 10.26008/1912/bco-dmo.923159.1
title: Semi-quantitative cell proteome of marine Synechococcus WH8102 using DIA-MS, interactive nutrient-temperature responses in stable chemostat bioreactors from laboratory experiments conducted in 2019 at the University of California, Irvine

description: This proteomic data set was prepared to determine how the distribution of protein-based traits contribute to cellular elemental stoichiometry of a globally-abundant, surface ocean phytoplankton in response to nutrient stress under variable temperature conditions. Cellular proteins are from laboratory chemostat cultures of marine Synechococcus isolate WH8102 (clade III). Proteins were extracted from cells grown under stable, steady-state conditions in a low-phosphorus medium (N:P=80) and a low-nitrate medium (N:P=1.7) across 3 temperatures of 20, 24, and 28°C (for a total of 6 chemostat cultures) at a white light density of 125 µmol quanta-1 m-2 s-1 on a 12-hour-light:12-hour-dark diel cycle, at a continuous dilution rate of 0.18 d-1, in fall of 2019. Cells and proteins were collected at 5 mid-light-period time points on non-consecutive days to yield a total of 30 samples. Culture work was performed at the University of California, Irvine by Adam Martiny's group. Proteins were analyzed with data-independent acquisition mass spectrometry proteomics methods by Mak Saito's group at the Woods Hole Oceanographic Institution. Data are exclusive peak area intensities of proteins with 2 or more representative peptides, normalized with Scaffold (2.2.1) DIA proteome software. Peptides were analyzed using a Michrom Advance HPLC system coupled to a Q-Exactive mass spectrometer (Thermo Scientific instrument version 2.8) with a Michrom Advance CaptiveSpray source, using the constant injection concentration of 1 µg/µL to allow uniformity across the dataset. Data with more details are published in Garcia et al. (2024) Proteome trait regulation of marine Synechococcus elemental stoichiometry under global change (DOI:10.1093/ismejo/wrae046).
DOI: 10.26008/1912/bco-dmo.964215.1
title: Carbon isotope values of porewaterdissolved organic matter (DOM) samples from California margin sediments sampled in 2019 onboard the R/V Oceanus and in 2020 onboard the R/V Sikuliaq

description: Carbon isotopic values (radiocarbon and 13C) are reported for dissolved and particulate carbon collected from the sediments retrieved from Santa Barbara Basin (SBB), Catalina Basin (CAT), Station D (StaD), and Station K (StaK). SBB and CAT, located in the California Borderland, were sampled in June 2019 onboard the R/V Oceanus. StaD and StaK, located in the upper slope offshore central California, were sampled in Dec 2020 onboard the R/V Sikuliaq. The isotope dataset includes radiocarbon and 13C values of: porewater dissolved organic carbon (DOC), porewater dissolved inorganic carbon (DIC), sediment particulate organic carbon (POC), sediment particulate total carbon, sediment particulate total nitrogen, bottom water DOC, bottom water DIC. Sediment samples were retrieved using multi-cores and gravity cores operated by the Oregon State University Marine Rock and Sediment Sampling Group. Porewater samples were extracted from the sediment within hours of core retrieval in a refrigerated van.
DOI: 10.26008/1912/bco-dmo.983803.1
title: Sulfur, carbon, and iron biogeochemistry of biomass, below ground material, and dissolved organic matter from three mangrove ecosystems in the Caribbean and Florida collected over two field seasons in 2022 and 2024

description: Here we provide data on the sulfur, carbon, and iron biogeochemistry of biomass, below ground material, and dissolved organic matter from three mangrove ecosystems in the Caribbean and Florida collected over two field seasons in 2022 and 2024. We provide elemental concentrations (organic C/N/S, Fe, pyrite) and isotopic compositions (δ13C, δ34S) of biomass, below ground material, and dissolved organic matter. Data will be useful for those interested in assessing organic matter sulfurization and pyrite formation in blue carbon ecosystems such as mangroves. Data will also be informative for researchers investigating organic and inorganic sulfur cycling. Samples were collected by Lena Capece and Morgan Raven, data were interpreted by Lena Capece and Morgan Raven.
DOI: 10.26008/1912/bco-dmo.964221.1
title: 1H NMR spectra of whole porewater dissolved organic matter (DOM) samples from California margin sediments sampled in 2020 onboard the R/V Sikuliaq

description: 1H NMR spectra of whole dissolved organic matter (DOM) samples are reported for StaD and StaK, located in the upper slope offshore central California. Sediment and porewater sampling were done in Dec 2020 onboard the R/V Sikuliaq. Sediment samples were retrieved using multi-cores and gravity cores operated by the Oregon State University Marine Rock and Sediment Sampling Group. Porewater samples were extracted from the sediment within hours of core retrieval in a refrigerated van. Rhizon samplers were used to collect porewater from multicores, whereas centrifugation was used for porewater collection from gravity cores. Upon collection, porewater samples were immediately poisoned with mercuric chloride and flame-sealed in glass ampules under a stream of ultra-high-purity nitrogen gas and refrigerated until analysis. Reported here are 1H NMR spectra of whole DOM samples, UV-irradiated deionized water blanks collected on the ship, and UV-irradiated deionized water pulled through Rhizon samplers (all 0.2-micron filtered).
DOI: 10.26008/1912/bco-dmo.982197.1
title: Data-assimilating ocean thorium cycle model output associated with results paper Xu & Weber, 2025

description: Here we present output from the data-assimilating ocean thorium cycle model published by Xu and Weber (2025) in Global Biogeochemical Cycles. (https://doi.org/10.1029/2024GB008485). The model predicts the oceanic distributions of thorium-230 and thorium-232 by simulating inputs from radiogenic sources and lithogenic sources (dust and sediment dissolution), and internal cycling by scavenging onto a range of particle types. The model assimilates data from the GEOTRACES IDP2021 archive to optimize uncertain parameters. Full code for the model and all input fields needed to run it can be accessed at the Zenodo repository (https://doi.org/10.5281/zenodo.10139433). This file contains the 3-dimensional thorium-230 and 232 fields from the fully-optimized model and the two-dimensional source fields for thorium-232 inputs to the ocean from dust and sediments. A matlab code is also provided to read the model output and plot the model thorium-232 budget to replicate a figure from Xu and Weber (2025).
DOI: 10.26008/1912/bco-dmo.887892.1
title: Damselfish energetics from multiple shallow reef sites in the Caribbean between June 2016-2019

description: Food webs are a complex array of trophic interactions. With a heavy emphasis on &quot;classic&quot; predator-prey interactions, most studies of trophic dynamics completely omitted parasitic interactions. However, recent work has shown that parasites contribute significantly to many aspects of trophic structure. In the current study, I have estimated the biomass transfer by parasites and predators from members of the genus Stegastes from multiple sites in the Caribbean. These results show that most of the parasite-driven biomass transfer comes from ectoparasitic gnathiid isopods. Moreover, I have found that predation rates are high for juveniles and decrease as they become adults, while the opposite is true for parasitism. Despite this, more biomass is being transferred from adults than younger stages via both predation and parasitism. I also show that in coral reef ecosystems, parasitism can transfer more biomass than predation for adult Stegastes. These results highlight the contribution of parasites to energy flow in coral reef environments and suggest that they must be considered in future food web studies.
DOI: 10.26008/1912/bco-dmo.962986.2
title: Water column dissolved and total dissolvable metal concentrations from Hawaii Ocean Timeseries (HOT) R/V Kilo Moana cruises at station ALOHA, North Pacific Subtropical Gyre, from December 2020 to November 2023

description: We collected and analyzed water samples for dissolved and total dissolvable trace metal concentration on Hawaii Ocean Time-series (HOT) cruises between December 2020 and November 2023. All samples were collected at Station ALOHA. Samples were collected using a trace metal rosette. Approx. 12 depth samples were collected for each cruise within the upper 350 m of the water column. 
 
Dissolved metal measurements reflect samples filtered through a 0.2 micron filter. Total dissolvable metal measurements represent unfiltered samples. Both sample types were acidified for &gt; 2 months after collection and metals were extracted via chelating resin (Nobias PA-1) and analyzed by inductively coupled plasma mass spectrometry at the University of Hawaii at Manoa using a Thermo Scientific iCAP-TQ mass spectrometer. 
 
This dataset is part of a larger study focused on the cycling of trace metals in the North Pacific Subtropical Gyre, and is embedded within the HOT program.
DOI: 10.26008/1912/bco-dmo.969488.1
title: Routine metabolic rate (RMR) and critical partial pressure (Pcrit) measurements of Salpa fusiformis collected aboard R/V Atlantic Explorer cruise AE2306 in the Sargasso Sea in March 2023

description: These data include the effect of temperature and oxygen partial pressure on the aerobic metabolism of Salpa fusiformis collected during a Bermuda Atlantic Time-series Study cruise (AE2306) in the Sargasso Sea from in March of 2023 aboard the R/V Atlantic Explorer. A Pryoscience Firesting optode and oxygen sensor spots were used to collect routine metabolic rate (RMR) and critical oxygen partial pressure (Pcrit). Understanding the drivers of metabolic sensitivity is critical as climate change is shifting the distributions of temperature- and oxygen-limited organisms. Given salps’ key role in carbon cycling, it’s crucial to understand how these changes affect them across different temperature and oxygen concentrations.
DOI: 10.26008/1912/bco-dmo.908217.1
title: Porewater geochemistry from sediment pushcores collected by ROV Doc Ricketts from Southern California Seeps in May 2021

description: This dataset provides geochemical data (major ions) for porewaters from sediment pushcores collected by a remotely-operated vehicle (ROV) deployed from the R/V Western Flyer in May 2021 (WF05-21) at the Del Mar and Santa Monica Seeps and in Newport Canyon, California, USA. Cores were sectioned into 1-3 centimeter (cm) horizons, and porewater was extracted shipboard using an argon-pressurized squeezer. Porewater samples were frozen at sea and thawed just before analysis. This dataset reports concentrations of fluoride, acetate, formate, chloride, bromide, nitrate, sulfate, thiosulfate, and phosphate anions and lithium, sodium, potassium, magnesium, and calcium cations. Measurements were made using the Thermo Dual Dionex Integrion HPIC ion chromatography system with either a 250-millimeter (mm) Dionex IonPac AS19-4um column (anions) or a 250 mm Dionex IonPac CS16-4um column (cations), in the Resnick Water and Environment Laboratory at the California Institute of Technology (Caltech).