cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.26008/1912/bco-dmo.893521.1
title: HPLC pigment concentrations from the Bermuda Atlantic Time-series Study (BATS) site from 1988-2022

description: Data presented here contain HPLC derived phytoplankton pigments and fluorometric chlorophyll-a from the BATS site for years 1988 to 2022.  Water samples are typically collected from 12 depths in the upper 250 meters of the water column, and then filtered under low vacuum through a 25mm GF/F filter. The filter is then flash frozen in liquid nitrogen and stored at -80 degrees C. Shoreside, analysis is performed on an HPLC using a method modified by Dr. R. Bidigare from the Wright et al. (1991) procedure.  This method identifies the pigments chlorophyll-c3, chlorophyll-c2, peridinin, 19’-butanoyloxyfucoxanthin, fucoxanthin, 19’-hexanoyloxyfucoxanthin, prasinoxanthin, diadinoxanthin, alloxanthin, diatoxanthin, lutein, zeaxanthin, chlorophyll-b, chlorophyll-a, divinyl chlorophyllide-a, alpha and beta carotene. Additionally, chlorophyll-a and phaeopigments are analyzed using a fluorometric assay.
DOI: 10.26008/1912/bco-dmo.893150.1
title: Aggregation kin versus nonkin experiments in marine bryozoans from shallow seagrass habitats in St. Teresa, Florida, USA in June 2017

description: This dataset is part of an integrated series of experiments to study how dispersal affects the density and relatedness of neighbors, and how the density and relatedness of neighbors in turn affect fitness. Spatial aggregation at settlement in groups of marine bryozoan larvae (composed of kin and nonkin) was empirically estimated in shallow (less than 2 meters) seagrass habitats near the Florida State University Coastal and Marine Laboratory (FSUCML) in St. Teresa, Florida, USA (29° 54' N, 84° 30' W). Larvae neither actively preferred nor avoided conspecifics or kin at settlement.
DOI: 10.26008/1912/bco-dmo.893158.1
title: Postsettlement performance in kin groups from shallow seagrass habitats in St. Teresa, Florida, USA in November and December 2017

description: This dataset is part of an integrated series of experiments to study how dispersal affects the density and relatedness of neighbors, and how the density and relatedness of neighbors in turn affect fitness. In a marine bryozoan, the effects of spreading sibling larvae were experimentally determined by manipulating the density and relatedness of settlers and measuring components of fitness in shallow (less than 2 meters) seagrass habitats near the Florida State University Coastal and Marine Laboratory (FSUCML) in St. Teresa, Florida, USA (29° 54' N, 84° 30' W). We found that settler density reduced maternal fitness when settler neighbors were siblings compared to when neighbors were unrelated or absent.
DOI: 10.26008/1912/bco-dmo.893092.1
title: Dispersal distance in a marine bryozoan in shallow seagrass habitats in St. Teresa, Florida, USA, between October and December 2017

description: This dataset is part of an integrated series of experiments to study how dispersal affects the density and relatedness of neighbors, and how the density and relatedness of neighbors in turn affect fitness. Dispersal kernels in a marine bryozoan were empirically estimated in shallow (less than 2 meters) seagrass habitats near the Florida State University Coastal and Marine Laboratory (FSUCML) in St. Teresa, Florida, USA (29° 54' N, 84° 30' W). Most larvae settled within approximately 1 meter of the maternal colony, although some could travel at least 10s of meters.
DOI: 10.26008/1912/bco-dmo.893115.1
title: Marine bryozoan aggregation experiments in shallow seagrass habitats in St. Teresa, Florida, USA in May 2017

description: This dataset is part of an integrated series of experiments to study how dispersal affects the density and relatedness of neighbors, and how the density and relatedness of neighbors in turn affect fitness. Spatial aggregation at settlement in a marine bryozoan was empirically estimated in shallow (less than 2 meters) seagrass habitats near the Florida State University Coastal and Marine Laboratory (FSUCML) in St. Teresa, Florida, USA (29 540 N; 84 300 W). Larvae neither actively preferred nor avoided conspecific settlement.
DOI: 10.15468/dl.b7ga3x
title: Occurrence Download

description: A dataset containing 172421 species occurrences available in GBIF matching the query:
{
 "DatasetKey" : [
 "is PIKE – Distribution, extinctions and introductions of freshwater fish in Sweden"
 ]
}

 The dataset includes 172421 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0021485-251025141854904/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.26008/1912/bco-dmo.752931.1
title: Water chemistry data collected from a laboratory experiment to investigate the interactive effects of temperature and pCO2 conditions on the behavior of sand dollar larvae (Dendraster excentricus)

description: These water chemistry data were collected from a laboratory experiment designed to investigate the interactive effects of temperature and pCO2 conditions on the behavior of sand dollar larvae (Dendraster excentricus.
DOI: 10.26008/1912/bco-dmo.892564.1
title: Ramped pyrolysis oxidation (RPO) thermogram data of DOC from water samples collected during R/V Western Flyer Benthic-Pelagic Coupling expedition to Station M in the eastern Pacific Ocean in April 2018

description: The &gt;5000-year radiocarbon age (14C-age) of much of the 630±30 Pg C oceanic dissolved organic carbon (DOC) reservoir remains an enigma in the marine carbon cycle. The fact that DOC is significantly older than dissolved inorganic carbon (DIC) at every depth in the ocean forms the basis of our current framing of the marine DOC cycle where some component persists over multiple cycles of ocean mixing. As a result, 14C-depleted, aged DOC is hypothesized to be present as a uniform reservoir with a constant 14C signature and concentration throughout the water column. However, a key requirement of this model would be direct observations of DOC with similar 14C signatures in the surface and deep ocean. To address this data gap, we applied a thermal fractionation method to investigate DOC in water samples collected from a range of water column depths during the R/V Western Flyer cruise to Station M off the coast of central California in April 2018. This dataset presents thermogram data and evolved CO2 from ramped pyrolysis oxidation (RPO) procedures.
DOI: 10.26008/1912/bco-dmo.892660.1
title: Ramped pyrolysis oxidation (RPO) carbon isotope data from DOC in water samples collected during R/V Western Flyer Benthic-Pelagic Coupling expedition to Station M in the eastern Pacific Ocean in April 2018

description: The &gt;5000-year radiocarbon age (14C-age) of much of the 630±30 Pg C oceanic dissolved organic carbon (DOC) reservoir remains an enigma in the marine carbon cycle. The fact that DOC is significantly older than dissolved inorganic carbon (DIC) at every depth in the ocean forms the basis of our current framing of the marine DOC cycle where some component persists over multiple cycles of ocean mixing. As a result, 14C-depleted, aged DOC is hypothesized to be present as a uniform reservoir with a constant 14C signature and concentration throughout the water column. However, a key requirement of this model would be direct observations of DOC with similar 14C signatures in the surface and deep ocean. To address this data gap, we applied a thermal fractionation method to investigate DOC in water samples collected from a range of water column depths during the R/V Western Flyer cruise to Station M off the coast of central California in April 2018. This dataset presents carbon isotope data for both bulk samples and samples processed using ramped pyrolysis oxidation (RPO) procedures.
DOI: 10.26008/1912/bco-dmo.893182.1
title: Primary production determinations at the Bermuda Atlantic Time-series Study site (BATS) from 1988-2022

description: Data presented are primary production estimates at the Bermuda Atlantic Time-series Study (BATS) site in the Sargasso Sea from December 1988 (BATS Cruise 3) through December 2022 (BATS cruise 399). The rate of carbon fixation by autotrophs in seawater was determined by tracing the uptake of radioactive 14C from the inorganic form to the particulate organic form. Incubations were performed in situ at depths ranging from the surface to 140 meters from dusk to dawn. Seawater samples were collected prior to sunrise, separated into three light bottles and one dark bottle, and a radioactive 14C tracer added. The bottles were then deployed on an incubation array at their collection depths, and allowed to drift on the array for the full light day.  Samples were recovered after sunset and filtered for subsequent analysis on a liquid scintillation counter.
DOI: 10.26008/1912/bco-dmo.893500.1
title: Temperature and nutrient dependent phytoplankton growth and herbivorous protist grazing rates from the Long-term Plankton Time Series site in Narragansett Bay, RI in 2017

description: Using a microcosm approach, we investigated the effect of simultaneous manipulation of temperature and nutrient availability on a coastal plankton community. The dataset presented shows phytoplankton growth and herbivorous protists grazing rates measured under three different temperatures (in situ, Δ+3, Δ-3) and two nutrient regimes (nutrient repleted and nutrient depleted). The data provided served for the production of Figure 6 and Figure 7 of Franzè et al., 2023 (see related publications, doi.org/10.1002/lno.12289).
DOI: 10.26008/1912/bco-dmo.893414.1
title: Herbivorous protist abundances under simultaneous manipulation of temperature and nutrients from the Long-term Plankton Time Series site in Narragansett Bay, RI in 2017

description: Using a microcosm approach, we investigated the effect of simultaneous manipulation of temperature and nutrient availability on a natural plankton community. The dataset presented shows the abundances of several herbivorous protists morphospecies in the initial community (day0) and after 10 days of incubation under modified temperature and nutrient conditions. The data provided served for the production of Figure 1 of Franzè et al., 2023 (doi.org/10.1002/lno.12289).
DOI: 10.26008/1912/bco-dmo.893487.1
title: Total dissolved cobalt and labile dissolved cobalt distributions measured by shipboard voltammetry in the Amundsen Sea, Ross Sea, and Terra Nova Bay during the CICLOPS expedition on RVIB Nathaniel B. Palmer (NBP1801) from Dec 2017 to Feb 2018

description: Cobalt (Co) is often a scarce but essential micronutrient for marine plankton in the Southern Ocean and coastal Antarctic seas where dissolved cobalt (dCo) concentrations can be extremely low. This dataset presents total dCo and labile dCo distributions measured via shipboard voltammetry in the Amundsen Sea, Ross Sea, and Terra Nova Bay during the CICLOPS (Cobalamin and Iron Co-Limitation of Phytoplankton Species) expedition on RVIB Nathaniel B. Palmer (NBP1801). The resulting profiles indicate that a significantly smaller dCo inventory was observed during the 2017/2018 CICLOPS expedition compared to the 2005/2006 CORSAC expeditions to the Ross Sea over a decade earlier. The dCo inventory loss (~10–20 pM) was present in both the surface and deep ocean and can be attributed to the loss of labile dCo, resulting in the near-100% strong ligand-bound complexation of dCo in the photic zone. This perturbation of the Southern Ocean cobalt biogeochemical cycle could signal changes in the nutrient limitation regimes, phytoplankton bloom composition, and carbon sequestration sink of the Southern Ocean.
DOI: 10.26008/1912/bco-dmo.892997.1
title: Nutrient concentrations and stable isotope values for groundwater in nearshore shelf waters off Charleston, SC from June 2018 to August 2019

description: Nutrient concentrations and stable isotope values for groundwater were measured on selected dates from 7 June 2018 to 10 August 2019 in nearshore shelf waters off Charleston, SC. The survey area was located in the region of 32° 42’ N, 79° 50’ W and 32° 51’ N, 79° 09’ W. Sediment core samples were analyzed by HPLC. These data were used to map nutrient concentrations and assess inputs of groundwater effects on benthic microalgae. Results may be of interest to others conducting research projects off Charleston, SC. 

Data were collected and interpreted by Jay Pinckney at the University of South Carolina, Columbia, SC.
DOI: 10.26008/1912/bco-dmo.893293.1
title: Depth profiles in the euphotic zone of nitrate, silicate, and phosphate concentrations and profiles of silicic acid uptake rates from EXPORTS cruise DY131 in the North Atlantic during May 2021

description: This dataset includes depth profiles in the euphotic zone of nutrient (nitrate, silicate, phosphate) concentrations and profiles of silicic acid uptake rates from seawater samples collected on EXPORTS cruise DY131 during May 2021.

This research focuses on the vertical export of the carbon associated with a major group of phytoplankton, the diatoms in the North Atlantic near the Porcupine Abyssal Plain. The major objective is to understand how diatom community composition and the prevailing nutrient conditions create taxonomic differences in metabolic state that combine to direct diatom taxa to different carbon export pathways. The focus is on diatoms, given their large contribution to global marine primary productivity and carbon export which translates into a significant contribution to the biogeochemical cycling of carbon (C), nitrogen (N), phosphorus (P), iron (Fe) and silicon (Si). It is hypothesized that the type and degree of diatom physiological stress are vital aspects of ecosystem state that drive export. To test this hypothesis, combined investigator expertise in phytoplankton physiology, genomics, and trace element chemistry is used to assess the rates of nutrient use and the genetic composition and response of diatom communities, with measurements of silicon and iron stress to evaluate stress as a predictor of the path of diatom carbon export.

The EXPORTS field campaign in the North Atlantic sampled a retentive eddy over nearly a month. At the beginning of the cruise, nitrate was abundant while silicic acid was nearly undetectable. Such low dissolved Si concentrations significantly limit diatom silicification resulting in diatoms with reduced mineral ballast and low Si:C and Si:N ratios that would reduce sinking rates and competition for Si can alter diatom taxonomic composition. Both factors can the path cells follow through the food web ultimately altering diatom carbon export.

Within each ecosystem state examined in the EXPORTS program, nutrient biogeochemistry, diatom and phytoplankton community structure, and global diatom gene expression patterns (metatranscriptomics) are characterized in the ocean. Nutrient amendment experiments with tracer addition (14C, 32Si) are used to quantify the level of Si, N, and Fe stress being experienced by the phytoplankton and to contextualize taxa-specific metatranscriptome responses for resolving gene expression profiles in the in situ communities.
DOI: 10.26008/1912/bco-dmo.893324.1
title: Results from nutrient limitation assessments quantifying the level of Si, N, and Fe stress being experienced by phytoplankton in samples collected on EXPORTS cruise DY131 in the North Atlantic during May 2021

description: This dataset includes data from the nutrient amendment experiments. In these experiments, tracer additions (14C, 32Si) were used to quantify the level of Si, N, and Fe stress being experienced by the phytoplankton and to contextualize taxa-specific metatranscriptome responses for resolving gene expression profiles in the in situ communities. Seawater samples were collected on EXPORTS cruise DY131 during May 2021. 

This research focuses on the vertical export of the carbon associated with a major group of phytoplankton, the diatoms in the North Atlantic near the Porcupine Abyssal Plain. The major objective is to understand how diatom community composition and the prevailing nutrient conditions create taxonomic differences in metabolic state that combine to direct diatom taxa to different carbon export pathways. The focus is on diatoms, given their large contribution to global marine primary productivity and carbon export which translates into a significant contribution to the biogeochemical cycling of carbon (C), nitrogen (N), phosphorus (P), iron (Fe) and silicon (Si). It is hypothesized that the type and degree of diatom physiological stress are vital aspects of ecosystem state that drive export. To test this hypothesis, combined investigator expertise in phytoplankton physiology, genomics, and trace element chemistry is used to assess the rates of nutrient use and the genetic composition and response of diatom communities, with measurements of silicon and iron stress to evaluate stress as a predictor of the path of diatom carbon export.

The EXPORTS field campaign in the North Atlantic sampled a retentive eddy over nearly a month. At the beginning of the cruise, nitrate was abundant while silicic acid was nearly undetectable. Such low dissolved Si concentrations significantly limit diatom silicification resulting in diatoms with reduced mineral ballast and low Si:C and Si:N ratios that would reduce sinking rates and competition for Si can alter diatom taxonomic composition. Both factors can the path cells follow through the food web ultimately altering diatom carbon export.

Within each ecosystem state examined in the EXPORTS program, nutrient biogeochemistry, diatom and phytoplankton community structure, and global diatom gene expression patterns (metatranscriptomics) are characterized in the ocean. Nutrient amendment experiments with tracer addition (14C, 32Si) are used to quantify the level of Si, N, and Fe stress being experienced by the phytoplankton and to contextualize taxa-specific metatranscriptome responses for resolving gene expression profiles in the in situ communities.
DOI: 10.26008/1912/bco-dmo.881861.1
title: Zooplankton biomass measured from net tows conducted during ongoing monthly cruises, from April 1994 to March 2022, at the Bermuda Atlantic Time-series Study (BATS) site in the Sargasso Sea

description: This dataset includes measurements of zooplankton biomass from net tows conducted during ongoing monthly cruises, from April 1994 to March 2022, at the Bermuda Atlantic Time-series Study (BATS) site (31° 40' N 64° 10'W) in the Sargasso Sea. Mesozooplankton were collected by oblique tows using a rectangular frame net with 202 micrometer (µm) mesh. Samples from tows were immediately split on board for subsequent wet and dry weight measurments.
DOI: 10.26008/1912/bco-dmo.892576.1
title: Benthic microalgal photopigment concentrations from nearshore shelf waters off Charleston, SC from June 2018 to August 2021

description: Benthic microalgal photopigment concentrations were measured on selected dates from 7 June 2018 to 10 August 2021 in nearshore shelf waters off Charleston, SC. The survey area was located in the region of 32° 42’ N, 79° 50’ W and 32° 51’ N, 79° 09’ W. Sediment core samples were analyzed by HPLC. These data were used to map the benthic microalgal biomass and assess inputs of groundwater effects on benthic microalgae. Results may be of interest to others conducting research projects off Charleston, SC. Data were collected and interpreted by Jay Pinckney at the University of South Carolina, Columbia, SC.
DOI: 10.26008/1912/bco-dmo.869963.2
title: Water column nitrate plus nitrite d15N measurements from seawater collected in November 2019 and November 2020 in the Western Tropical South Pacific

description: Here we present nitrate plus nitrite isotopic data from the TONGA research cruises to the Western Tropical South Pacific in 2019 and a reoccupation in 2020. These data were collected along a transect focusing on the impacts on biological productivity and the biological carbon pump from shallow hydrothermal sources of trace elements. Notably, these data show that the subsurface nitrate plus nitrite isotopes were low, 2 to 3 per mil, in the vicinity of the hydrothermal vents. While subsurface nitrate plus nitrite isotopes were low higher, 4 to 7 per mil, at stations further from the vents.
DOI: 10.26008/1912/bco-dmo.892867.1
title: Wavelength- and temperature-dependent apparent quantum yields (AQYs) for the photochemical production of acrylate in seawater

description: This dataset includes wavelength- and temperature-dependent apparent quantum yields (AQYs) for the photochemical production of acrylate in 0.2-micrometer (µm) filtered seawater samples collected from coastal Rhode Island (USA), the Sargasso Sea, and two sites in the Pacific Ocean off the island of Mo'orea (French Polynesia). These data were determined using (1) a monochromatic irradiation system and (2) a Shimadzu high-performance liquid chromatography system with a UV-Vis absorbance detector. 

This dataset was collected by Dr. Lei Xue under the supervision of Dr. David Kieber at the State University of New York, College of Environmental Science and Forestry. These data were used to construct a global model of the depth-dependent photochemical production of acrylate in seawater. This work is part of a larger study to understand the role of photochemistry in the turnover of dissolved organic matter in the oceans.
DOI: 10.26008/1912/bco-dmo.892971.1
title: Seawater microbial communities within coral reef seawater change over six years in response to disturbance

description: Reefs on the southern shore of St. John, United States Virgin Islands (USVI) were targeted for 11 opportunistic sampling events over six years from June 2016 to June 2022. The reefs included (from west to east) Dittlif, Cocoloba, Joels Shoal, Europa, Yawzi, Tektite, Booby Rock, and Ram Head, all of which are within the bounds of Virgin Islands National Park, except for Dittlif. Reef collections included surveys for benthic composition, small volumes of seawater for inorganic and organic nutrients and microbial abundances, larger volumes for microbial biomass and chlorophyll, and CTD casts for temperature and salinity. All collections occurred during daylight hours. Dates of seawater sampling events included June 10-12, 2016, October 28-29, 2016, March 25-28, 2017, July 26-30, 2017, November 27-30, 2017, April 11-13, 2018, November 5-9, 2018, August 6-10, 2020, January 17-24, 2021, October 20-25, 2021, and June 24-29, 2022. 

These sampling points surround two major stressors to St. John, USVI reefs: two category 5 hurricanes, Irma and Maria, which affected the reefs in September, 2017, and stony coral tissue loss disease, a multi-species disease outbreak that began emerging around St. John, USVI between January-June, 2020. As of August 2020, the disease just began affecting all reefs in the study area, except Europa and Cocoloba. All reefs were impacted by the next sampling in January 2021. To better understand how seawater microorganisms reflect changes in the underlying reef habitat, we sought to 1) identify the changes to the benthic reef habitat over a six year time period with the hypothesis that reefs would become more algal-dominant, 2) examine the changes in the overlying seawater nutrients, cell counts, and temperature, and 3) investigate the concurrent changes in specific microbial groups during that time period.