cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.26008/1912/bco-dmo.887530.1
title: Diurnal gnathiid consumption in fish sampled from shallow reef sites in Caribbean waters from May 2017 to Sep 2021

description: Specialist species have evolved to fill narrow niches but are especially susceptible to environmental change. With sufficient functional redundancy, ecosystem services can persist without specialists. Grooming behaviors are common in both terrestrial and aquatic organisms. However, in aquatic systems there is a heavy reliance on intraspecific mutualisms where specialist species groom or &quot;clean&quot; parasites off of host fishes. 

Here, we sampled the gut contents of 709 fishes, representing 61 species and including both cleaner and non-cleaner fishes, to compare their consumption of gnathiid isopods, the most common fish ectoparasites. This dataset contains sample and collection metadata, including date, location, and method of sampling, as well as species, stage, length, and Gnathiid count for samples collected.

We found that cleaner fishes eat significantly more gnathiids, and eat them more frequently, compared to non-cleaner fishes. Our results highlight the importance of both dedicated and facultative cleaners as consumers of ectoparasites and show that their role cannot be supplanted by generalist consumers. Furthermore, we suggest that different cleaner species act as complementary rather than redundant specialists.
DOI: 10.26008/1912/bco-dmo.968956.1
title: Polysaccharide hydrolase activities from water samples collected at various sites under varying hydrostatic pressures in the Western North Atlantic aboard R/V Atlantic Explorer cruise AE2413 in May 2024

description: Heterotrophic bacteria and archaea (here: microbes) are critical drivers of the ocean’s biogeochemical cycles, active throughout the depth of the ocean. Their capabilities and limitations help determine the rates and locations at which carbon and nutrients are regenerated, as well as the extent to which organic matter is preserved (Hedges 1992). In the deep ocean, at bathy- and abyssopelagic depths (ca. 1000-6000m), these communities are dependent upon the sinking flux of particulate organic matter (POM) from the surface ocean (Bergauer et al. 2018). This dependence means that heterotrophic microbial communities must produce the extracellular enzymes required to solubilize and hydrolyze high molecular weight (HMW) POM to sizes substrates suitable for cellular uptake. A recent global-scale investigation of deep-sea microbes in fact found that the genetic potential for exported (extracellular) enzymes among bacteria in deep waters was far greater than for communities in surface or mesopelagic waters (Zhao et al. 2020). We have new evidence that a substantial fraction of bacteria in bottom water from the North Atlantic Ocean use a specialized set of extracellular enzymes to rapidly take up HMW polysaccharides (Giljan et al. 2021), a substrate processing mechanism that would not be detected with the low molecular weight substrates used in most prior studies of microbial activity in the deep ocean (Nagata et al. 2010).
 
Through our collaboration with the Danish Center for Hadal Research, we were able to use pressurization systems and in situ specialized equipment to investigate the effects of pressures characteristic of bathy- and abyssopelagic depths on microbial communities and their extracellular enzymes in the open North Atlantic Ocean.  
 
Here we present the measurement of polysaccharide hydrolase activities above that measured for killed controls from various sites under varying hydrostatic pressures in the Western North Atlantic aboard R/V Atlantic Explorer, cruise AE2413 in May 2024.
DOI: 10.26008/1912/bco-dmo.874728.1
title: CTD data from station N-1200 collected in August 2017 from a cruise aboard R/V Mediterranean Explorer

description: This dataset contains CTD (Conductivity, Temperature, Depth) from a cruise to station N-1200 to study the photic zone in the Eastern Mediterranean at high depth resolution. Data were collected on August 7, 2017 from the R/V Mediterranean Explorer.
DOI: 10.26008/1912/bco-dmo.874805.1
title: Nutrients and flow cytometry from station N-1200 collected in August 2017 from a cruise aboard R/V Mediterranean Explorer

description: This dataset contains nutrients and flow cytometry from station N-1200 collected in August 2017 from a cruise aboard R/V Mediterranean Explorer.
DOI: 10.26008/1912/bco-dmo.966570.1
title: Phytoplankton physiology and composition under temperature-nutrient multi-stressor incubation from July 2017 in Narragansett Bay, RI

description: These data include measurements of phytoplankton physiology and composition from a controlled multi-stressor incubation experiment conducted in July 2017. Whole phytoplankton communities were collected from the Narragansett Bay Long-Term Plankton Time Series site and incubated at the in-situ temperature (22 degrees Celsius) and at deviations from that temperature (±4 degrees Celsius) with both macronutrient amendments (N, P, Si addition) and unamended controls. Phytoplankton growth, abundance, size structure, and elemental composition, as well as microzooplankton grazing rates were measured throughout the incubations. These data improve our understanding of the phytoplankton community response to short-term changes in temperature or nutrients, providing valuable insight into the drivers of marine ecosystems.
DOI: 10.26008/1912/bco-dmo.968692.1
title: Flow cytometry data from a controlled multi-stressor incubation experiment conducted in July 2017 using phytoplankton communities from Narragansett Bay, RI

description: These data include measurements of phytoplankton physiology and composition from a controlled multi-stressor incubation experiment conducted in July 2017. Whole phytoplankton communities were collected from the Narragansett Bay Long-Term Plankton Time Series site and incubated at the in-situ temperature (22 degrees Celsius) and at deviations from that temperature (±4 degrees Celsius) with both macronutrient amendments (N, P, Si addition) and unamended controls. Phytoplankton growth, abundance, size structure, and elemental composition, as well as microzooplankton grazing rates were measured throughout the incubations. These data improve our understanding of the phytoplankton community response to short-term changes in temperature or nutrients, providing valuable insight into the drivers of marine ecosystems.
DOI: 10.26008/1912/bco-dmo.968732.1
title: TEP and CSP particles collected from Station ALOHA for HOT time series during R/V Kilo Moana cruises from Jan 2020 to Sep 2022

description: These data include transparent exopolymer particle (TEP) and Coomassie stainable particle (CSP) concentrations within the upper 350 meters collected on 15 cruises to Station ALOHA over the period of January 2020 through September 2022. Particle concentrations are measured spectrophotometrically using Alcian blue (TEP) and Coomassie blue (CSP) dyes and reported in the semi-quantitative concentration units of xanthan gum equivalents µg / L (TEP) and bovine albumen equivalents µg / L (CSP). Also included are total dissolved carbohydrate concentrations in µM C / L units on a subset of 9 cruises. These analyses are a contribution to the project, &quot;Collaborative Research: Transparent exopolymer and phytoplankton vertical migration as sources for preformed nitrate anomalies in the subtropical N. Pacific Ocean&quot; funded by the Chemical and Biological Oceanography Programs at NSF.
DOI: 10.26008/1912/bco-dmo.963175.1
title: Trace metal ratios from four coral skeletons from three coral species (Diploria labyrinthiformis, Pseudodiploria strigosa, Orbicella franksi) extracted from Hog Reef in Bermuda, collected in August of 2016.

description: These data include trace metal ratios from four coral skeletons from three coral species (Diploria labyrinthiformis, Pseudodiploria strigosa, Orbicella franksi) extracted from Hog Reef in Bermuda. The cores were collected in August of 2016 using small boats from the Bermuda Institute of Ocean Sciences (BIOS). Trace metal ratios were measured at intervals of 200 micrometer in each coral core ranging from the top to a core depth of 36305 to 79625 micrometer using LA-ICP-MS. Understanding seasonal, interannual, and long-term variations in trace metal ratios incorporated into coral skeletons has the potential to refine our understanding of environmental drivers of coral calcification. These data were collected by Dr. Andreas Andersson, Scripps Institution of Oceanography, University of California San Diego, and Dr. Travis Courtney, University of Puerto Rico, Mayagüez Campus.
DOI: 10.26008/1912/bco-dmo.964610.1
title: Acropora hyacinthus isotope data from coral samples collected at a north shore site in Mo’orea in May 2019

description: Heterotrophic feeding on plankton and particulate organic matter (POM) by tropical Scleractinian corals is known to aid in the resistance and recovery from thermally induced bleaching. However, the relative importance of heterotrophy in promoting bleaching resistance and recovery is likely to vary based on ecological context and the severity of heat stress. In 2019, the Pacific Island of Mo’orea experienced mass coral mortality during a widespread marine heatwave. Many Acropora hyacinthus colonies on the shallow reef slope (5 m) were resistant to bleaching, while colonies on the deeper fore reef (14 m) often bleached and subsequently recovered, despite similar thermal stress. The role of heterotrophy in this divergent bleaching response was investigated using fatty acid, isotopic, and elemental biomarkers. Multiple complementary lines of evidence, including feeding proxies, isotopic niche overlap, and putative POM fatty acid biomarkers, indicated that bleaching resistant colonies were likely consuming more POM than their bleached and recovered counterparts. Additionally, although visually recovered, host energetics in recovered colonies remained compromised and exhibited proportionally less mono- and polyunsaturated fatty acids and less relative nitrogen than resistant colonies. We show that corals that rely more on heterotrophic nutrient acquisition can better resist thermally induced bleaching. Our results also revealed the long-term energetic costs of bleaching even after visual recovery. Ultimately, these results underscore the vital role of coral nutrition in shaping coral bleaching response and recovery.

The dataset includes coral sample ids, tissue fraction type, sampling location, relative fatty acid abundances (C12.0–C22.6n3), total fatty acids per filter, isotope ratios of nitrogen (δ15N) and carbon (δ13C), coral depth, tagging month, bleaching status across three time points in 2019 (May, August, and October), colony surface area, and carbon-to-nitrogen ratio.
DOI: 10.26008/1912/bco-dmo.968636.1
title: TEP and CSP particle concentrations from samples collected from Station ALOHA to 31ºN in the North Pacific in June 2021 on the R/V Kilo Moana cruise KM2108

description: These data include transparent exopolymer particle (TEP) and Coomassie stainable particle (CSP) concentrations within the upper 500 meters collected on a 12-day June 2021 cruise aboard the R/V Kilo Moana (KM2108) that visited Station ALOHA to 31 N nominally along 158 W in the subtropical North Pacific. Particle concentrations are measured spectrophotometrically using Alcian blue (TEP) and Coomassie blue (CSP) dyes and reported in the semi-quantitative concentration units of xanthan gum equivalents µg / L (TEP) and bovine albumen equivalents µg / L (CSP). Also included are total dissolved carbohydrate concentrations in µM C units, salinity, temperature, as well as oxygen, nitrate, silicate, phosphate, ammonium, dissolved organic phosphorus, dissolved organic nitrogen concentrations in µM units. These analyses are a contribution to the project, &quot;Collaborative Research: Transparent exopolymer and phytoplankton vertical migration as sources for preformed nitrate anomalies in the subtropical N. Pacific Ocean&quot; funded by the Chemical and Biological Oceanography Programs at NSF.
DOI: 10.26008/1912/bco-dmo.3782.8
title: Discrete bottle samples collected at the Bermuda Atlantic Time-series Study (BATS) site in the Sargasso Sea from October 1988 through December 2024

description: Data presented here are discrete bottle samples from the Bermuda Atlantic Time-series Study (BATS) site located 80 km SE of Bermuda (31°40N, 64°10W) in the Sargasso Sea for October 1988 (cruise 10001) through December 2024 (cruise 10422). Measurements were collected from the core monthly BATS cruises and the near-biweekly (depending on ship availability) BATS Bloom cruises during February through April. The sample parameter list has been mostly consistent for the full time-series record and includes: salinity, dissolved oxygen, dissolved inorganic carbon, alkalinity, nutrients (nitrate + nitrite, nitrite, phosphate, silicate), particulate organics (carbon, nitrogen, phosphorous), particulate silicate, total organic carbon and nitrogen, total dissolved phosphorus, bacterial enumeration, and flow cytometry counts of picoplankton. The HPLC derived phytoplankton pigment data which are collected synoptically with many of the above parameters are reported in a separate dataset.
DOI: 10.26008/1912/bco-dmo.765141.6
title: Continuous Plankton Recorder phytoplankton and zooplankton occurrence and count data from The CPR Survey in the Western North Atlantic Ocean from 1958 to 2022

description: This dataset includes Continuous Plankton Recorder (CPR) phytoplankton and zooplankton abundance (occurrence and count) data from the Marine Biological Association of the UK, the CPR Survey, in the Western North Atlantic Ocean from 1958-2022 inclusive.
DOI: 10.26008/1912/bco-dmo.957607.1
title: Dissolved trace metal concentrations, nickel speciation, and pH in shipboard incubations conducted on FeOA project cruise SKQ202209S on the R/V Sikuliaq between June 4 2022 to July 1 2022 in the NE Pacific.

description: This dataset includes the concentrations of total dissolved trace metals (manganese, iron, added iron-57, nickel, copper, zinc), of labile dissolved nickel, and pH measured in samples collected from phytoplankton shipboard incubation experiments conducted on the FeOA cruise SKQ202209S on R/V Sikuliaq in the NE Pacific from June to July 2022. 
This project investigates the effects of ocean acidification on the associations between iron and organic ligands in seawater and on iron bioavailability to marine phytoplankton communities. The project used a combination of shipboard incubation experiments and depth profiles to characterize iron speciation and cycling across coastal upwelling, oligotrophic open ocean, and iron-limited subarctic oceanographic regimes in the NE Pacific. Surface seawater was incubated at pH of 8.1, 7.6, and 7.1 with natural iron and with dissolved iron amendments in order to investigate interactions between pH and iron bioavailability across the different regimes. Understanding how pH influences iron and its relationship with ligands provides important information for assessing the impacts of ocean acidification on primary production and biogeochemical processes.
DOI: 10.26008/1912/bco-dmo.964473.1
title: Whitespotted eagle ray (Aetobatus narinari) tagging and biologging data in Harrington Sound, Bermuda in October of 2022

description: The following dataset includes information from whitespotted eagle rays (Aetobatus narinari) collected in Harrington Sound and Flatts Inlet, Bermuda, for tagging experiments to examine retention and behavior of individual animals fitted with CATS-CAM biologging tags. Rays were spotted visually from a moving vessel and collected via a knotted seine net by encircling the animal and entangling it. Rays were brought aboard for measurements, photographs and tagging (Passive Integrated Transponder and CATS-CAM) and kept in a small plastic pool with ambient seawater. Once procedures were complete, rays were released on site, or brought to the Bermuda Aquarium for further examination.
DOI: 10.26008/1912/bco-dmo.948396.2
title: Dark DIC Fixation Rates collected from CliOMZ AT50-10 in the Eastern Pacific Ocean from May to June 2023 (CliOMZ project)

description: These data include dark dissolved inorganic carbon (DIC) fixation rates measured on R/V Atlantis (CliOMZ AT50-10 expedition) from Golfito, Costa Rica to San Diego, USA in May-June 2023.  We aimed at quantifying dark DIC fixation rates associated with nitrification by specifically inhibiting ammonia-oxidizing microorganisms. Instruments used were a CTD profiler and a scintillation counter (Perkin-Elmer Tri-Carb 2910 TR).
DOI: 10.26008/1912/bco-dmo.956085.1
title: Peptidase and glucosidase activities from mesocosm and bulk water incubations from waters taken aboard the R/V Endeavor in the Western North Atlantic during the research cruise EN683 in May and June, 2022.

description: This dataset includes the measurements of leucine aminopeptidase, glucosidase, and endo-acting (mid-chain cleaving) peptidase activities from bulk and mesocosm incubations from waters taken aboard the R/V Endeavor in the Western North Atlantic during the research cruise EN683 (2022-05-24 to 2022-06-12). Waters for bulk incubation were taken at three sites and various depths, mesocosm incubations were taken at two sites and two depths. 
                 
This research tested the hypothesis that the mechanism of polysaccharide processing is related to the cost to a cell of producing the enzymes required for its hydrolysis, and the probability that a cell will receive sufficient return on investment for producing the enzymes. Our conceptual model suggests that external (extracellular) hydrolysis is favored when organic matter is abundant, or when enzyme production costs can be shared (e.g., on particles, in biofilms); selfish uptake (hydrolysis without production of low molecular weight products in the environment) would be a better strategy when high molecular weight (HMW) organic matter is scarce, and particularly when the HMW organic matter is very complex. 

Seawater was sampled from four depths at our initial station, and the deep chlorophyll maximum and bottom water from two subsequent stations differing in typical extent of primary productivity. 

We incubated mesocosms of seawater from the deep chlorophyll maximum and from bottom water from two stations differing in typical extent of primary productivity. Organic matter availability was amended by adding high molecular weight organic matter (dissolved and particulate) from diatoms, or by adding the polysaccharide fucoidan, or by adding the polysaccharide arabinogalactan.  Amendments were performed in triplicate mesocosms, while one mesocosm was left unamended for a total of ten mesocosms from each depth and station tested 

These data help test this model because they provide information about the activities of exo-acting glucosidases and an exo-acting peptidase, plus endo-acting peptidases, all of which are used to hydrolyze high molecular weight organic matter. Activities of these enzymes differed by station as well as by depth
DOI: 10.26008/1912/bco-dmo.964174.1
title: Targeted metabolomics data from coral and sea anemone larvae exposed to normoxic or hypoxic conditions in lab and field experiments performed in USA and Bermuda during 2023-2024

description: These data arose from larvae of the sea anemone Nematostella vectensis and corals Galaxea fascicularis and Porites astreoides exposed to normoxic (i.e., control) or hypoxic conditions. Larvae were sampled in groups of 20-30 and these samples were processed for targeted metabolomics at the University of Pennsylvania Metabolomics Core. The dataset contains the species from which metabolomics data originate, experimental treatment (normoxia or hypoxia), experiment metadata, and abundance of each metabolite in each sample.
DOI: 10.26008/1912/bco-dmo.963428.1
title: SRA accession and collection metadata for sediments samples collected at two Chesapeake Bay stations from Mar 2017 to Aug 2018

description: To examine the seasonality of sulfur oxidizers in surface sediments in seasonality oxygen stressed sediments of the Chesapeake Bay, surface sediments (0-0.5 cm depth) were collected on 10 occasions spanning all seasons over the course of two years by gravity coring at a pair of stations with differing summer bottom water oxygen concentrations. Samples were collected from March of 2017 to August of 2018. One station was located in the central channel which experiences severe summer hypoxia (CB4.3C) and one station was located on an adjacent shoal where bottom waters are better ventilated (CB4.3W; station names associated with Chesapeake Bay Water Quality Monitoring Program). At both stations, the waters are mesohaline and the sediments are fine grained. The study was designed to enable a description of the seasonality of benthic microbial communities at paired locations with contrasting degrees of bioturbation.
This dataset includes collection metadata, Sequence Read Archive (SRA) and BioSample accessions under BioProject PRJNA613483 at The National Center for Biotechnology Information and are associated with BCO-DMO datasets, all listed under related datasets. The SRA project title is “Chesapeake Bay Surface Sediment Seasonal Study”.
DOI: 10.26008/1912/bco-dmo.963432.1
title: SRA accession and experiment metadata for Chesapeake Bay sediment incubation in 2019

description: Surficial sediment obtained from mesohaline zone of Chesapeake Bay were homogenized and incubated in sediment core liners for 64 days in aerated aquaria. Cable bacteria were allowed to grow unimpeded in a subset of cores. Downward growth of cable bacteria was inhibited by a barrier filter embedded at 0.5 cm in a subset of cores. Sediment cores were destructively sampled and sectioned at 0.5 cm depth increments at 6 times points over the approximately 2 months.

This dataset includes Sequence Read Archive (SRA) and BioSample accessions under BioProject PRJNA833464, accessions SAMN27993143 to SAMN27993196 and sampling metadata. These data were published in Liau et al. (2022).
DOI: 10.26008/1912/bco-dmo.964167.1
title: Physiological measurements from sea anemones exposed to normoxic or hypoxic conditions from lab experiments performed in Philadelphia, PA, USA in 2024

description: This dataset contains data from physiological measurements of a lab population of Nematostella vectensis sea anemones exposed to normoxic (i.e., control) or hypoxic conditions. Metrics measured pertain to adult metabolic performance (e.g., dry weights, aerboic respiraton rates) and reproductive physiology (e.g., fecundity, egg sizes, sperm mitochondrial membrane potential). Measurements were also made in larvae produced from experimental adults, including larval respiration and development rates.
DOI: 10.26008/1912/bco-dmo.960511.1
title: Carbonate rock species composition from samples collected by HOV Alvin during R/V Atlantis cruises AT37-13 and AT42-03 and ROV SuBastian during R/V Falkor cruise FK190106 at Pacific margin of Costa Rica from 2017 to 2019

description: This dataset is a matrix of individuals counts of species by sample of carbonate rocks collected by HOV Alvin during R/V Atlantis cruise AT37-13 (2017) and AT42-03 (2018) and ROV SuBastian during R/V Falkor cruise FK190106 (2019) at the Quepos Landslide, Mound 12, and Jaco Scar methane seeps in the Pacific margin of Costa Rica. It includes cruise, dive, collection, and sample information, as well as the description of seep location and activity level and description of treatment (in situ, colonization, or transplant).