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Datasets of project "European Project on Ocean Acidification"

Mostrando recursos 61 - 80 de 1.326

  1. Over-determined charbonate chemstry dataset from different kinds of manipulation (TA, DIC) and water types (natural and artificial seawater)

    Hoppe, Clara Jule Marie; Langer, Gerald; Rokitta, Sebastian D; Wolf-Gladrow, Dieter A; Rost, Bjoern
    The growing field of ocean acidification research is concerned with the investigation of organism responses to increasing pCO2 values. One important approach in this context is culture work using seawater with adjusted CO2 levels. As aqueous pCO2 is difficult to measure directly in small-scale experiments, it is generally calculated from two other measured parameters of the carbonate system (often AT, CT or pH). Unfortunately, the overall uncertainties of measured and subsequently calculated values are often unknown. Especially under high pCO2, this can become a severe problem with respect to the interpretation of physiological and ecological data. In the few datasets...

  2. Seawater carbonate chemistry and pteropod Limacina helicina antarctica shell dissolution during experiments, 2012

    Bednarsek, Nina; Tarling, Geraint A; Bakker, Dorothee C E; Fielding, Sophie; Cohen, Anne L; Kuzirian, Alan; McCorkle, Daniel C; Lézé, Bertrand; Montagna, Roberto
    Anthropogenic ocean acidification is likely to have negative effects on marine calcifying organisms, such as shelled pteropods, by promoting dissolution of aragonite shells. Study of shell dissolution requires an accurate and sensitive method for assessing shell damage. Shell dissolution was induced through incubations in CO2 enriched seawater for between 4 and 14 days. We describe a procedure that allows the level of dissolution to be assessed and classified into three main types: Type I with partial dissolution of the prismatic layer; Type II with exposure of underlying crossed-lamellar layer, and Type III, where crossed-lamellar layer shows signs of dissolution. Levels...

  3. Seawater carbonate chemistry and pteropod Limacina helicina antarctica shell dissolution during experiments, 2012

    Bednarsek, Nina; Tarling, Geraint A; Bakker, Dorothee C E; Fielding, Sophie; Cohen, Anne L; Kuzirian, Alan; McCorkle, Daniel C; Lézé, Bertrand; Montagna, Roberto
    Anthropogenic ocean acidification is likely to have negative effects on marine calcifying organisms, such as shelled pteropods, by promoting dissolution of aragonite shells. Study of shell dissolution requires an accurate and sensitive method for assessing shell damage. Shell dissolution was induced through incubations in CO2 enriched seawater for between 4 and 14 days. We describe a procedure that allows the level of dissolution to be assessed and classified into three main types: Type I with partial dissolution of the prismatic layer; Type II with exposure of underlying crossed-lamellar layer, and Type III, where crossed-lamellar layer shows signs of dissolution. Levels...

  4. Seawater carbonate chemistry and pteropod Limacina helicina antarctica shell dissolution during experiments, 2012

    Bednarsek, Nina; Tarling, Geraint A; Bakker, Dorothee C E; Fielding, Sophie; Cohen, Anne L; Kuzirian, Alan; McCorkle, Daniel C; Lézé, Bertrand; Montagna, Roberto
    Anthropogenic ocean acidification is likely to have negative effects on marine calcifying organisms, such as shelled pteropods, by promoting dissolution of aragonite shells. Study of shell dissolution requires an accurate and sensitive method for assessing shell damage. Shell dissolution was induced through incubations in CO2 enriched seawater for between 4 and 14 days. We describe a procedure that allows the level of dissolution to be assessed and classified into three main types: Type I with partial dissolution of the prismatic layer; Type II with exposure of underlying crossed-lamellar layer, and Type III, where crossed-lamellar layer shows signs of dissolution. Levels...

  5. Seawater carbonate chemistry and pteropod Limacina helicina antarctica shell dissolution during experiments, 2012

    Bednarsek, Nina; Tarling, Geraint A; Bakker, Dorothee C E; Fielding, Sophie; Cohen, Anne L; Kuzirian, Alan; McCorkle, Daniel C; Lézé, Bertrand; Montagna, Roberto
    Anthropogenic ocean acidification is likely to have negative effects on marine calcifying organisms, such as shelled pteropods, by promoting dissolution of aragonite shells. Study of shell dissolution requires an accurate and sensitive method for assessing shell damage. Shell dissolution was induced through incubations in CO2 enriched seawater for between 4 and 14 days. We describe a procedure that allows the level of dissolution to be assessed and classified into three main types: Type I with partial dissolution of the prismatic layer; Type II with exposure of underlying crossed-lamellar layer, and Type III, where crossed-lamellar layer shows signs of dissolution. Levels...

  6. Iceland Sea time series for temperature, salinity, nutrients, oxygen, total carbon and pCO2, 1983-2011

    Olafsson, Jón

  7. Iceland Sea time series for temperature, salinity, nutrients, oxygen, total carbon and pCO2, 1983-2011

    Ólafsson, Jón

  8. U-Th, 14C and d11B results for Holocene North Atlantic deep sea corals (Lophelia pertusa), 2011

    Douville, Eric
    Sediment Core MD01-2454G SW Rockall BANK 747m water depth on Logatechev Mounds (Core was taken during Marion Dufresne Cruise Geosciences 2001 at 55°31'N and 15°39'W) ENAM corals from BoxCores of SW Rockall Bank and Porcupine Bank water depth 725 and 750m (Box cores ENAM 9915 and ENAM 9910 were taken from 725 m bsl on the Southwest Rockall Bank (55,32°N, 15,40°W), and ENAM 9828 from 745 m bsl on the Porcupine Bank (53,48°N, 13,54°W))

  9. U-Th, 14C and d11B results for Holocene North Atlantic deep sea corals (Lophelia pertusa), 2011

    Douville, Eric
    Sediment Core MD01-2454G SW Rockall BANK 747m water depth on Logatechev Mounds (Core was taken during Marion Dufresne Cruise Geosciences 2001 at 55°31'N and 15°39'W) ENAM corals from BoxCores of SW Rockall Bank and Porcupine Bank water depth 725 and 750m (Box cores ENAM 9915 and ENAM 9910 were taken from 725 m bsl on the Southwest Rockall Bank (55,32°N, 15,40°W), and ENAM 9828 from 745 m bsl on the Porcupine Bank (53,48°N, 13,54°W))

  10. North Atlantic surface seawater pH values measured on board of the "Pourquoi -Pas?" during the BoBECO Cruise (September -October 2011)

    Douville, Eric

  11. North Atlantic surface seawater pH values measured on board of the Pourquoi-Pas? during the BoBECO Cruise (September -October 2011)

    Douville, Eric

  12. Seawater carbonate chemistry and brown dottyback (Pseudochromis fuscus) movement and feeding behaviour during experiments, 2011

    Cripps, Ingrid L; Munday, Philip L; McCormick, Mark I
    Changes in olfactory-mediated behaviour caused by elevated CO2 levels in the ocean could affect recruitment to reef fish populations because larval fish become more vulnerable to predation. However, it is currently unclear how elevated CO2 will impact the other key part of the predator-prey interaction - the predators. We investigated the effects of elevated CO2 and reduced pH on olfactory preferences, activity levels and feeding behaviour of a common coral reef meso-predator, the brown dottyback (Pseudochromis fuscus). Predators were exposed to either current-day CO2 levels or one of two elevated CO2 levels (~600 µatm or ~950 µatm) that may occur...

  13. Seawater carbonate chemistry and brown dottyback (Pseudochromis fuscus) movement and feeding behaviour during experiments, 2011

    Cripps, Ingrid L; Munday, Philip L; McCormick, Mark I
    Changes in olfactory-mediated behaviour caused by elevated CO2 levels in the ocean could affect recruitment to reef fish populations because larval fish become more vulnerable to predation. However, it is currently unclear how elevated CO2 will impact the other key part of the predator-prey interaction - the predators. We investigated the effects of elevated CO2 and reduced pH on olfactory preferences, activity levels and feeding behaviour of a common coral reef meso-predator, the brown dottyback (Pseudochromis fuscus). Predators were exposed to either current-day CO2 levels or one of two elevated CO2 levels (~600 µatm or ~950 µatm) that may occur...

  14. Seawater carbonate chemistry and brown dottyback (Pseudochromis fuscus) movement and feeding behaviour during experiments, 2011

    Cripps, Ingrid L; Munday, Philip L; McCormick, Mark I
    Changes in olfactory-mediated behaviour caused by elevated CO2 levels in the ocean could affect recruitment to reef fish populations because larval fish become more vulnerable to predation. However, it is currently unclear how elevated CO2 will impact the other key part of the predator-prey interaction - the predators. We investigated the effects of elevated CO2 and reduced pH on olfactory preferences, activity levels and feeding behaviour of a common coral reef meso-predator, the brown dottyback (Pseudochromis fuscus). Predators were exposed to either current-day CO2 levels or one of two elevated CO2 levels (~600 µatm or ~950 µatm) that may occur...

  15. Seawater carbonate chemistry and brown dottyback (Pseudochromis fuscus) movement and feeding behaviour during experiments, 2011

    Cripps, Ingrid L; Munday, Philip L; McCormick, Mark I
    Changes in olfactory-mediated behaviour caused by elevated CO2 levels in the ocean could affect recruitment to reef fish populations because larval fish become more vulnerable to predation. However, it is currently unclear how elevated CO2 will impact the other key part of the predator-prey interaction - the predators. We investigated the effects of elevated CO2 and reduced pH on olfactory preferences, activity levels and feeding behaviour of a common coral reef meso-predator, the brown dottyback (Pseudochromis fuscus). Predators were exposed to either current-day CO2 levels or one of two elevated CO2 levels (~600 µatm or ~950 µatm) that may occur...

  16. Seawater carbonate chemistry and expression of hsp70, hsp90 and hsf1 in the reef coral Acropora digitifera during experiments, 2012

    Nakamura, Masoko; Morita, Masaya; Kurihara, Haruko; Mitarai, Satoshi
    Ocean acidification is an ongoing threat for marine organisms due to the increasing atmospheric CO2 concentration. Seawater acidification has a serious impact on physiologic processes in marine organisms at all life stages. On the other hand, potential tolerance to external pH changes has been reported in coral larvae. Information about the possible mechanisms underlying such tolerance responses, however, is scarce. In the present study, we examined the effects of acidified seawater on the larvae of Acropora digitifera at the molecular level. We targeted two heat shock proteins, Hsp70 and Hsp90, and a heat shock transcription factor, Hsf1, because of their...

  17. Seawater carbonate chemistry and expression of hsp70, hsp90 and hsf1 in the reef coral Acropora digitifera during experiments, 2012

    Nakamura, Masoko; Morita, Masaya; Kurihara, Haruko; Mitarai, Satoshi
    Ocean acidification is an ongoing threat for marine organisms due to the increasing atmospheric CO2 concentration. Seawater acidification has a serious impact on physiologic processes in marine organisms at all life stages. On the other hand, potential tolerance to external pH changes has been reported in coral larvae. Information about the possible mechanisms underlying such tolerance responses, however, is scarce. In the present study, we examined the effects of acidified seawater on the larvae of Acropora digitifera at the molecular level. We targeted two heat shock proteins, Hsp70 and Hsp90, and a heat shock transcription factor, Hsf1, because of their...

  18. Seawater carbonate chemistry and expression of hsp70, hsp90 and hsf1 in the reef coral Acropora digitifera during experiments, 2012

    Nakamura, Masoko; Morita, Masaya; Kurihara, Haruko; Mitarai, Satoshi
    Ocean acidification is an ongoing threat for marine organisms due to the increasing atmospheric CO2 concentration. Seawater acidification has a serious impact on physiologic processes in marine organisms at all life stages. On the other hand, potential tolerance to external pH changes has been reported in coral larvae. Information about the possible mechanisms underlying such tolerance responses, however, is scarce. In the present study, we examined the effects of acidified seawater on the larvae of Acropora digitifera at the molecular level. We targeted two heat shock proteins, Hsp70 and Hsp90, and a heat shock transcription factor, Hsf1, because of their...

  19. Seawater carbonate chemistry and expression of hsp70, hsp90 and hsf1 in the reef coral Acropora digitifera during experiments, 2012

    Nakamura, Masoko; Morita, Masaya; Kurihara, Haruko; Mitarai, Satoshi
    Ocean acidification is an ongoing threat for marine organisms due to the increasing atmospheric CO2 concentration. Seawater acidification has a serious impact on physiologic processes in marine organisms at all life stages. On the other hand, potential tolerance to external pH changes has been reported in coral larvae. Information about the possible mechanisms underlying such tolerance responses, however, is scarce. In the present study, we examined the effects of acidified seawater on the larvae of Acropora digitifera at the molecular level. We targeted two heat shock proteins, Hsp70 and Hsp90, and a heat shock transcription factor, Hsf1, because of their...

  20. Seawater carbonate chemistry and expression of hsp70, hsp90 and hsf1 in the reef coral Acropora digitifera during experiments, 2012

    Nakamura, Masoko; Morita, Masaya; Kurihara, Haruko; Mitarai, Satoshi
    Ocean acidification is an ongoing threat for marine organisms due to the increasing atmospheric CO2 concentration. Seawater acidification has a serious impact on physiologic processes in marine organisms at all life stages. On the other hand, potential tolerance to external pH changes has been reported in coral larvae. Information about the possible mechanisms underlying such tolerance responses, however, is scarce. In the present study, we examined the effects of acidified seawater on the larvae of Acropora digitifera at the molecular level. We targeted two heat shock proteins, Hsp70 and Hsp90, and a heat shock transcription factor, Hsf1, because of their...

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