cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.1594/pangaea.945678
title: Seawater carbonate chemistry and survivorship, fecundity, and development of four Tigriopus californicus populations from San Juan Island

description: Intertidal zones are highly dynamic and harsh habitats: organisms that persist there must face many stressors, including drastic changes in seawater pH, which can be strongly influenced by biological processes. Coastal ecosystems are heterogeneous in space and time, and populations can be exposed to distinct selective pressures and evolve different capacities for acclimation to changes in pH. Tigriopus californicus is a harpacticoid copepod found in high-shore rock pools on the west coast of North America. It is a model system for studying population dynamics in diverse environments, but little is known about its responses to changes in seawater pH. I quantified the effects of pH on the survivorship, fecundity, and development of four T. californicus populations from San Juan Island, Washington, across three generations. For all populations and generations, copepod cultures had lower survivorship and delayed development under extended exposure to higher pH treatments (pH 7.5 and pH 8.0), whereas cultures maintained in lower pH (7.0) displayed stable population growth over time. Reciprocal transplants between treatments demonstrated that these pH effects were reversible. Life histories were distinct between populations, and there were differences in the magnitudes of pH effects on development and culture growth that persisted through multiple generations. These results suggest that T. californicus might not have the generalist physiology that might be expected of an intertidal species, and it could be adapted to lower average pH conditions than those that occur in adjacent open waters.
description: In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2021) was used to compute a complete and consistent set of carbonate system variables, as described by Nisumaa et al. (2010). In this dataset the original values were archived in addition with the recalculated parameters (see related PI). The date of carbonate chemistry calculation by seacarb is 2022-06-20.
DOI: 10.1594/pangaea.761768
title: Seawater carbonate chemistry and calcification rate of colonies of Stylophora pistillata, 1998

description: The carbonate chemistry of seawater is usually not considered to be an important factor influencing calcium-carbonate-precipitation by corals because surface seawater is supersaturated with respect to aragonite. Recent reports, however, suggest that it could play a major role in the evolution and biogeography of recent corals. We investigated the calcification rates of five colonies of the zooxanthellate coral Stylophora pistillata in synthetic seawater using the alkalinity anomaly technique. Changes in aragonite saturation from 98% to 585% were obtained by manipulating the calcium concentration. The results show a nonlinear increase in calcification rate as a function of aragonite saturation level. Calcification increases nearly 3-fold when aragonite saturation increases from 98% to 390%, i.e., close to the typical present saturation state of tropical seawater. There is no further increase of calcification at saturation values above this threshold. Preliminary data suggest that another coral species, Acropora sp., displays a similar behaviour. These experimental results suggest: (1) that the rate of calcification does not change significantly within the range of saturation levels corresponding to the last glacial-interglacial cycle, and (2) that it may decrease significantly in the future as a result of the decrease in the saturation level due to anthropogenic release of CO2 into the atmosphere. Experimental studies that control environmental conditions and seawater composition provide unique opportunities to unravel the response of corals to global environmental changes.
description: In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Lavigne and Gattuso, 2011) was used to compute a complete and consistent set of carbonate system variables, as described by Nisumaa et al. (2010). In this dataset the original values were archived in addition with the recalculated parameters (see related PI).
description: Supplement to: Gattuso, Jean-Pierre; Frankignoulle, Michel; Bourge, I; Romaine, S; Buddemeier, Robert W (1998): Effect of calcium carbonate saturation of seawater on coral calcification. Global and Planetary Change, 18, 37-46
DOI: 10.15468/dl.dhdc5b
title: Occurrence Download

description: A dataset containing 1476 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Pandalidae",
 "Geometry POLYGON((170 20, 170 50, 120 50, 120 20, 170 20))",
 "HasCoordinate is true"
 ]
}

 The dataset includes 1476 records from 29 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0015878-241107131044228/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.1594/pangaea.907954
title: Seawater carbonate chemistry and titanium dioxide nanoparticles (nTiO2) in edible bivalve mollusks

description: Large amounts of anthropogenic CO2 in the atmosphere are taken up by the ocean, which leads to 'ocean acidification' (OA). In addition, the increasing application of nanoparticles inevitably leads to their increased release into the aquatic environment. However, the impact of OA on the bioaccumulation of nanoparticles in marine organisms still remains unknown. This study investigated the effects of OA on the bioaccumulation of a model nanoparticle, titanium dioxide nanoparticles (nTiO2), in three edible bivalves. All species tested accumulated significantly greater amount of nTiO2 in pCO2-acidified seawater. Furthermore, the potential health threats of realistic nTiO2 quantities accumulated in bivalves under future OA scenarios were evaluated with a mouse assay, which revealed evident organ edema and alterations in hematologic indices and blood chemistry values under future OA scenario (pH at 7.4). Overall, this study suggests that OA would enhance the accumulation of nTiO2 in edible bivalves and may therefore increase the health risk for seafood consumers.
description: In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2019) was used to compute a complete and consistent set of carbonate system variables, as described by Nisumaa et al. (2010). In this dataset the original values were archived in addition with the recalculated parameters (see related PI). The date of carbonate chemistry calculation by seacarb is 2019-10-24.
description: Supplement to: Shi, Wei; Han, Yu; Guo, Cheng; Su, Wenhao; Zhao, Xinguo; Zha, Shanjie; Wang, Yichen; Liu, Guangxu (2019): Ocean acidification increases the accumulation of titanium dioxide nanoparticles (nTiO2) in edible bivalve mollusks and poses a potential threat to seafood safety. Scientific Reports, 9(1)
DOI: 10.1594/pangaea.946161
title: Seawater carbonate chemistry and shell extension of Atlanta ariejansseni

description: Shelled holoplanktonic gastropods are among the most vulnerable calcifiers to ocean acidification. They inhabit the pelagic environment and build thin and transparent shells of aragonite, a metastable form of calcium carbonate. While shelled pteropods have received considerable attention and are widely regarded as bioindicators of ocean acidification, atlantids have been much less studied. In the open ocean, atlantids are uniquely positioned to address the effects of ocean acidification at distinct trophic levels. From juvenile to adult, they undergo dramatic metamorphosis. As adults they are predatory, feeding primarily on shelled pteropods, copepods and other zooplankton, while as juveniles they feed on algae. Here we investigated the transcriptome and the impact of a three-day CO2 exposure on the gene expression of adults of the atlantid Atlanta ariejansseni and compared these to results previously obtained from juveniles. Individuals were sampled in the Southern Subtropical Convergence Zone (Atlantic Ocean) and exposed to ocean chemistry simulating past (~mid-1960s), present (ambient) and future (2050) conditions. In adults we found that the changes in seawater chemistry had significantly affected the expression of genes involved in biomineralization and the immune response, although there were no significant differences in shell growth between the three conditions. In contrast, juveniles experienced substantial changes in shell growth and a broader transcriptomic response. In adults, 1170 genes had the same direction of expression in the past and future treatments when compared to the ambient. Overall, this type of response was more common in adults (8.6% of all the genes) than in juveniles (3.9%), whereas a linear response with decreasing pH was more common in juveniles (7.7%) than in adults (4.5%). Taken together, these results suggest that juveniles are more sensitive to increased acidification than adults. However, experimental limitations including short incubation times, one carboy used for each treatment and two replicates for transcriptome analysis, require us to be cautious about these conclusions. We show that distinct transcriptome profiles characterize the two life stages, with less than 50% of shared transcripts. This study provides an initial framework to understand how ocean acidification may affect the molecular and calcification responses of adult and juvenile atlantids.
description: In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2021) was used to compute a complete and consistent set of carbonate system variables, as described by Nisumaa et al. (2010). In this dataset the original values were archived in addition with the recalculated parameters (see related PI). The date of carbonate chemistry calculation by seacarb is 2022-10-21.
DOI: 10.1594/pangaea.946236
title: Seawater carbonate chemistry and net calcification rates of cold-water coralline algae Clathromorphum compactum and Clathromorphum nereostratum

description: Ocean acidification and warming are expected to disproportionately affect high-latitude calcifying species, such as crustose coralline algae. Clathromorphum nereostratum and Clathromorphum compactum are the primary builders of carbonate-hardgrounds in the Aleutians Islands of Alaska and North Atlantic shelf, respectively, providing habitat and settlement substrates for a large number of species. We exposed wild-collected specimens to 12 pCO2/T treatments (344–3322 μatm; 6.38–12.40°C) for 4 months in a factorially crossed, replicated laboratory experiment. Impacts of pCO2/T on algal calcification were quantified from linear extension and buoyant weight. Here we show that, despite belonging to the same genus, C. nereostratum exhibited greater sensitivity to thermal stress, while C. compactum exhibited greater sensitivity to pH stress. Furthermore, multivariate models of algal calcification derived from the experiment indicate that both C. nereostratum and C. compactum will commence net dissolution as early as 2120 and 2200 AD, respectively. Our results therefore indicate that near-term climate change may lead to substantial degradation of these species and loss of the critical hardground habitats that they form.
description: In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2021) was used to compute a complete and consistent set of carbonate system variables, as described by Nisumaa et al. (2010). In this dataset the original values were archived in addition with the recalculated parameters (see related PI). The date of carbonate chemistry calculation by seacarb is 2022-07-12.
DOI: 10.1594/pangaea.873827
title: Measurements of microbial processes, dissolution, water and porewater chemistry during experiments on two coral reef sediments: Magnetic Island oxygen fluxes

description: In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2016) was used to compute a complete and consistent set of carbonate system variables, as described by Nisumaa et al. (2010). In this dataset the original values were archived in addition with the recalculated parameters (see related PI). The date of carbonate chemistry calculation is 2017-03-22.
DOI: 10.1594/pangaea.962593
title: Physical oceanographic profiles of seven CTD casts from Gulf of Ancud into Comau Fjord in 2016

description: In September 2016, CTD measurements were carried out along the Comau Fjord, Chile, from the head of the fjord to the mouth of the fjord. CTD measurements were taken at a total of 6 stations from the surface to the bottom of the fjord and temperature, salinity, fluorescence, density, oxygen and pH per meter of water depth were recorded.
DOI: 10.1594/pangaea.962898
title: Measured values of Li/Mg, Mg/Ca, Sr/Ca, Ba/Ca, U/Ca and Sr-U for coral and coralline algae paleothermometer calibrations

description: A comprehensive georeferenced database of measured values of Li/Mg, Mg/Ca, Sr/Ca, Ba/Ca, U/Ca and Sr-U in coral and coralline algae compiled from the scientific literature (1950-2021; http://www.webofknowledge.com, accessed 2022-09-30).
DOI: 10.1594/pangaea.962909
title: Measured values of Ba/Ca in coral and coralline algae for seawater barium calibrations

description: A comprehensive georeferenced database of measured values of Ba/Ca in coral and coralline algae compiled from the scientific literature (1950-2021; http://www.webofknowledge.com, accessed 2022-09-30).
DOI: 10.1594/pangaea.963471
title: Seawater carbonate chemistry and oyster holobiont response to acidification and hypoxia

description: The data set is composed of data measured from an experiment involving exposing oyster holobiont to acidification and hypoxia. We aimed to understand the physiological trade-offs involved in oysters based on their exposure to stressful environments and how the microbial community associated with the oysters will also respond. We also measure changes in nutrient processing capability of the holobiont by measuring changes in nutrient concentrations.
description: In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2022) was used to compute a complete and consistent set of carbonate system variables, as described by Nisumaa et al. (2010). In this dataset the original values were archived in addition with the recalculated parameters (see related PI). The date of carbonate chemistry calculation by seacarb is 2023-09-06.
DOI: 10.1594/pangaea.963548
title: Seawater carbonate chemistry and growth retardation of Pacific oyster Crassostrea gigas

description: We evaluated the recovery capacity of a model calcifier, the Pacific oyster Crassostrea gigas. We exposed juveniles to 15 pH conditions between 6.4 and 7.8 for 14 days. Oyster growth was retarded below pH 7.1 while shells were corroded at pH 6.5. We then placed the oysters under ambient pH &gt; 7.8 for 42 days. The oysters from each pH condition were briefly dried with absorbent paper and the total wet body weight was measured with a Mettler precision balance (Mettler-Toledo) during the exposure period on days 6, 10 and 14, and then during the ambient pH period on days 4, 7, 9, 11, 14, 18, 22, 28, 36 and 42.
description: In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2022) was used to compute a complete and consistent set of carbonate system variables, as described by Nisumaa et al. (2010). In this dataset the original values were archived in addition with the recalculated parameters (see related PI). The date of carbonate chemistry calculation by seacarb is 2023-09-06.
DOI: 10.1594/pangaea.963552
title: Seawater carbonate chemistry and reproductive success of bull kelp (Nereocystis luetkeana, Phaeophyceae, Laminariales)

description: To determine the effects of changing temperatures and carbonate levels on Northern California's bull kelp populations, we collected sporophylls from mature bull kelp individuals in Point Arena, CA. At the Bodega Marine Laboratory, we released spores from field-collected bull kelp, and cultured microscopic gametophytes in a common garden experiment with a fully factorial design crossing modern conditions (11.63 ± 0.54°C and pH 7.93 ± 0.26) with observed extreme climate conditions (15.56 ± 0.83°C and 7.64 ± 0.32 pH). In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2022) was used to compute a complete and consistent set of carbonate system variables, as described by Nisumaa et al. (2010). In this dataset the original values were archived in addition with the recalculated parameters (see related PI). The date of carbonate chemistry calculation by seacarb is 2023-09-06.
DOI: 10.1594/pangaea.933580
title: Seawater carbonate chemistry and the physiological performance of the chlorophyte Dunaliella tertiolecta

description: The effects of increased CO2 and irradiance on the physiological performance of the chlorophyte Dunaliella tertiolecta were studied at different PAR and UVR (UVA+UVB) irradiances, simulating the solar radiation at different depths, under present (390 ppmv, LC) and predicted CO2 levels for the year 2100 (1000 ppmv, HC). Elevated CO2 resulted in higher optimum and effective quantum yields (Fv/Fm and Phi PSII, respectively), electron transport rates (ETR) and specific growth rates (µ). Cell stress was alleviated in HC respect to LC as evidenced by a decrease in reactive oxygen species (ROS) accumulation. DNA damage showed a 42-fold increase in cyclobutane-pyrimidine dimers (CPDs) formation under the highest irradiance (1100 µmol quanta/m**2/s) in LC with respect to the lowest irradiance (200 µmol quanta/m**2/s). Photolyase (CII-PCD-PL) gene expression was upregulated under HC resulting in a drastic decrease in CPDs accumulation to only 25% with respect to LC. Proliferating cell nuclear antigen (PCNA) accumulation was always higher in HC and the accumulation pattern indicated its involvement in repair or growth depending on the irradiance dose. The repressor of silencing (ROS1) was only marginally involved in the response, suggesting that photoreactivation was the most relevant mechanism to overcome UVR damage. Our results demonstrate that future scenarios of global change result in alleviation of irradiance stress by CO2–induced photoprotection in D. tertiolecta.
description: In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2021) was used to compute a complete and consistent set of carbonate system variables, as described by Nisumaa et al. (2010). In this dataset the original values were archived in addition with the recalculated parameters (see related PI). The date of carbonate chemistry calculation by seacarb is 2021-07-06.
DOI: 10.1594/pangaea.964032
title: Seawater carbonate chemistry at CO2 vents and ambient pH sites along the coast of Ischia (Italy), in 2010 and 2019

description: We present measured and estimated seawater physiochemical parameters at CO2 vents and ambient pH sites along the coast of Ischia (Italy) across water depths from 1 m to 40 m. We characterized the physical and chemical parameters in four CO2 venting sites (vent 1 to vent 4) and reference sites with ambient pH with no venting activity (two reference sites for each CO2 vent). SeaFETTM Ocean pH sensors (Satlantic) were deployed to quantify variation in pH at the CO2 vents and their corresponding ambient pH sites at the same depths where benthic surveys were performed from May to October 2019. Before deployment, the SeaFETs were calibrated with ambient pH water. The mean offset between calibration samples and calibrated SeaFET pH was ± 0.006 units (n= 44 water samples), indicating a high-quality pH dataset. The pH sensors were deployed in the recently discovered CO2 vents (Vent 2, Vent 3, Vent 4) and one of the corresponding reference areas with no visible vent activity during the same period (ambient 2a, ambient 3a, ambient 4a). The pH and seawater physicochemical parameters for vent 1 and their corresponding ambient sites (site Castello Aragonese) are also included here. This data from the Castello Aragonese site was originally reported by Kroeker et al., 2011. Discrete water samples were collected using Niskin bottles at the vent and reference areas with ambient pH to measure: i) the carbonate system parameters during the pH sensor deployment, and ii) the dissolved inorganic nutrients. Salinity was measured using a CTD (CTD Sea-Bird Electronics SBE 19 Plus Seacat). Discrete water samples for total alkalinity (AT) were collected within 0.25 m of the pH sensors using standard operating protocols. Precision of the AT measurements of CRMs was &lt; 2 μmol kg-1 from nominal values. AT and pHT along with in situ temperature and depth were used to determine the remaining carbonate system parameters for each sampling period using the R package seacarb v3.2.12 (Gattuso et al., 2023).
DOI: 10.1594/pangaea.963705
title: Seawater carbonate chemistry and exoskeletal properties in post-terminal-molt female snow crab Chionoecetes opilio

description: We examined the effect of long-term (2 year) exposure to decreased seawater pH (7.8 and 7.5, PCO2 ~ 760 and 1550 µatm, respectively) on exoskeletal properties in post-terminal-molt female Chionoecetes opilio. Since the effects of OA vary among body regions in decapods, exoskeletal properties (microhardness, thickness, and elemental composition) were measured in five body regions: the carapace, both claws, and both third walking legs.
description: In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2022) was used to compute a complete and consistent set of carbonate system variables, as described by Nisumaa et al. (2010). In this dataset the original values were archived in addition with the recalculated parameters (see related PI). The date of carbonate chemistry calculation by seacarb is 2023-10-12.
DOI: 10.1594/pangaea.963472
title: Seawater carbonate chemistry and survival, development, and growth of larval crown-of-thorns starfish, Acanthaster sp

description: We examined whether warming, acidification, and different food availability regimes interacted to affect the survival, development, and growth of larval crown-of-thorns starfish, Acanthaster sp. (CoTS). Larvae were reared in all combinations of two temperatures (26, 30 °C), two pH levels (pH 8.0, 7.6), and three food regimes ('low' ration: 1,000 cells mL-1; 'switch' ration: 1,000 cells mL-1 until day 11, followed by 50,000 cells mL-1; and 'high' ration: 50 000 cells mL-1).
description: In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2022) was used to compute a complete and consistent set of carbonate system variables, as described by Nisumaa et al. (2010). In this dataset the original values were archived in addition with the recalculated parameters (see related PI). The date of carbonate chemistry calculation by seacarb is 2023-09-06.