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  • Articles  (2,605)
  • Industrial Chemistry  (2,578)
  • Calcification
  • 2020-2023  (9)
  • 1965-1969  (1,537)
  • 1955-1959  (1,059)
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  • Articles  (2,605)
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  • 1
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    Growth rates under low and high temperatures for Emiliania huxleyi in constant and fluctuating thermal environments (2020)
    Biological and Chemical Oceanography Data Management Office (BCO-DMO). Contact: bco-dmo-data@whoi.edu
    Details
    Publication Date: 2022-10-31
    Description: Dataset: Ehux growth rates under thermal variation
    Description: This dataset includes the growth rates under low and high temperatures for E. huxleyi in constant and fluctuating thermal environments. Global warming will be combined with predicted increases in thermal variability in the future surface ocean, but how temperature dynamics will affect phytoplankton biology and biogeochemistry is largely unknown. Here, we examine the responses of the globally important marine coccolithophore Emiliania huxleyi to thermal variations at two frequencies (1 d and 2 d) at low (18.5 °C) and high (25.5 °C) mean temperatures. Elevated temperature and thermal variation decreased growth, calcification and physiological rates, both individually and interactively. The 1 d thermal variation frequencies were less inhibitory than 2 d variations under high temperatures, indicating that high-frequency thermal fluctuations may reduce heat-induced mortality and mitigate some impacts of extreme high-temperature events. Cellular elemental composition and calcification was significantly affected by both thermal variation treatments relative to each other and to the constant temperature controls. The negative effects of thermal variation on E. huxleyi growth rate and physiology are especially pronounced at high temperatures. These responses of the key marine calcifier E. huxleyi to warmer, more variable temperature regimes have potentially large implications for ocean productivity and marine biogeochemical cycles under a future changing climate. For a complete list of measurements, refer to the full dataset description in the supplemental file 'Dataset_description.pdf'. The most current version of this dataset is available at: https://www.bco-dmo.org/dataset/782888
    Description: NSF Division of Ocean Sciences (NSF OCE) OCE-1538525
    Keywords: Thermal Performance Curves ; Growth Rates ; Emiliania huxleyi ; Climate change ; Calcification ; Elemental quotas
    Repository Name: Woods Hole Open Access Server
    Type: Dataset
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  • 2
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    Energy-dispersive X-ray spectroscopy (EDS) spectra and scanning electron microscope (SEM) images from phytoplankton Si utilization experiments during 8-day laboratory cultures in 2016 and 2017. (2021)
    Biological and Chemical Oceanography Data Management Office (BCO-DMO). Contact: bco-dmo-data@whoi.edu
    Details
    Publication Date: 2022-10-31
    Description: Dataset: Si Depletion Experiment: EDS and SEM
    Description: Energy-dispersive X-ray spectroscopy (EDS) spectra and scanning electron microscope (SEM) images from phytoplankton Si utilization experiments during 8-day laboratory cultures in 2016 and 2017. Coccolithophore Si utilization was assessed via Si drawdown from growth media. For a complete list of measurements, refer to the full dataset description in the supplemental file 'Dataset_description.pdf'. The most current version of this dataset is available at: https://www.bco-dmo.org/dataset/858840
    Description: NSF Division of Ocean Sciences (NSF OCE) OCE-1638838
    Keywords: Coccolithophore ; Silicon ; Energy dispersive spectroscopy ; Biomineralization ; Calcification ; SEM
    Repository Name: Woods Hole Open Access Server
    Type: Dataset
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  • 3
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    Average conditions and chemical fluxes during mussel bed experiments at the Bodega Marine Laboratory, University of California, Davis in 2017. (2022)
    Biological and Chemical Oceanography Data Management Office (BCO-DMO). Contact: bco-dmo-data@whoi.edu
    Details
    Publication Date: 2022-10-31
    Description: Dataset: Effects of mussels on seawater chemistry
    Description: This dataset represents average conditions and chemical fluxes during mussel bed experiments where chemistry (pH and O2) was measured at defined heights within and above the mussel bed. These data describe average conditions outside of the mussel bed during each profile sampled at the Bodega Marine Laboratory, University of California, Davis in 2017. For a complete list of measurements, refer to the full dataset description in the supplemental file 'Dataset_description.pdf'. The most current version of this dataset is available at: https://www.bco-dmo.org/dataset/869361
    Description: NSF Division of Ocean Sciences (NSF OCE) OCE-1636191
    Keywords: Mytilus californicus ; Mussel bed ; Biogenic habitat ; Foundation species ; Carbonate chemistry ; Chemical gradients ; Calcification ; Respiration ; Flow speed ; PH ; Oxygen
    Repository Name: Woods Hole Open Access Server
    Type: Dataset
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  • 4
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    Intracellular elemental quotas under low and high temperatures for E. huxleyi in constant and fluctuating thermal environments (2020)
    Biological and Chemical Oceanography Data Management Office (BCO-DMO). Contact: bco-dmo-data@whoi.edu
    Details
    Publication Date: 2022-10-31
    Description: Dataset: Ehux physiology under thermal variation
    Description: Intracellular elemental quotas under low and high temperatures for E. huxleyi in constant and fluctuating thermal environments. This dataset includes the growth rates under low and high temperatures for E. huxleyi in constant and fluctuating thermal environments. Global warming will be combined with predicted increases in thermal variability in the future surface ocean, but how temperature dynamics will affect phytoplankton biology and biogeochemistry is largely unknown. Here, we examine the responses of the globally important marine coccolithophore Emiliania huxleyi to thermal variations at two frequencies (1 d and 2 d) at low (18.5 °C) and high (25.5 °C) mean temperatures. Elevated temperature and thermal variation decreased growth, calcification and physiological rates, both individually and interactively. The 1 d thermal variation frequencies were less inhibitory than 2 d variations under high temperatures, indicating that high-frequency thermal fluctuations may reduce heat-induced mortality and mitigate some impacts of extreme high-temperature events. Cellular elemental composition and calcification was significantly affected by both thermal variation treatments relative to each other and to the constant temperature controls. The negative effects of thermal variation on E. huxleyi growth rate and physiology are especially pronounced at high temperatures. These responses of the key marine calcifier E. huxleyi to warmer, more variable temperature regimes have potentially large implications for ocean productivity and marine biogeochemical cycles under a future changing climate. For a complete list of measurements, refer to the full dataset description in the supplemental file 'Dataset_description.pdf'. The most current version of this dataset is available at: https://www.bco-dmo.org/dataset/782901
    Description: NSF Division of Ocean Sciences (NSF OCE) OCE-1538525
    Keywords: Thermal Performance Curves ; Growth Rates ; Emiliania huxleyi ; Climate change ; Calcification ; Elemental quotas
    Repository Name: Woods Hole Open Access Server
    Type: Dataset
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  • 5
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    Growth rates for Emiliania huxleyi thermal response curve across 12 temperatures from 8.5-28.6C (2020)
    Biological and Chemical Oceanography Data Management Office (BCO-DMO). Contact: bco-dmo-data@whoi.edu
    Details
    Publication Date: 2022-10-31
    Description: Dataset: Ehux growth rates for thermal response curve
    Description: This dataset presents growth rates for Emiliania huxleyi thermal response curve across 12 temperatures from 8.5-28.6C.Global warming will be combined with predicted increases in thermal variability in the future surface ocean, but how temperature dynamics will affect phytoplankton biology and biogeochemistry is largely unknown. Here, we examine the responses of the globally important marine coccolithophore Emiliania huxleyi to thermal variations at two frequencies (1 d and 2 d) at low (18.5 °C) and high (25.5 °C) mean temperatures. Elevated temperature and thermal variation decreased growth, calcification and physiological rates, both individually and interactively. The 1 d thermal variation frequencies were less inhibitory than 2 d variations under high temperatures, indicating that high-frequency thermal fluctuations may reduce heat-induced mortality and mitigate some impacts of extreme high-temperature events. Cellular elemental composition and calcification was significantly affected by both thermal variation treatments relative to each other and to the constant temperature controls. The negative effects of thermal variation on E. huxleyi growth rate and physiology are especially pronounced at high temperatures. These responses of the key marine calcifier E. huxleyi to warmer, more variable temperature regimes have potentially large implications for ocean productivity and marine biogeochemical cycles under a future changing climate. For a complete list of measurements, refer to the full dataset description in the supplemental file 'Dataset_description.pdf'. The most current version of this dataset is available at: https://www.bco-dmo.org/dataset/782911
    Description: NSF Division of Ocean Sciences (NSF OCE) OCE-1538525
    Keywords: Thermal Performance Curves ; Growth Rates ; Emiliania huxleyi ; Climate change ; Calcification ; Elemental quotas
    Repository Name: Woods Hole Open Access Server
    Type: Dataset
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  • 6
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    Elemental stoichiometry for Emiliania huxleyi across a range of 12 temperatures from 8.5-28.6C (2020)
    Biological and Chemical Oceanography Data Management Office (BCO-DMO). Contact: bco-dmo-data@whoi.edu
    Details
    Publication Date: 2022-10-31
    Description: Dataset: Ehux elemental composition across thermal range
    Description: This dataset includes elemental stoichiometry for Emiliania huxleyi across a range of 12 temperatures from 8.5-28.6C. Global warming will be combined with predicted increases in thermal variability in the future surface ocean, but how temperature dynamics will affect phytoplankton biology and biogeochemistry is largely unknown. Here, we examine the responses of the globally important marine coccolithophore Emiliania huxleyi to thermal variations at two frequencies (1 d and 2 d) at low (18.5 °C) and high (25.5 °C) mean temperatures. Elevated temperature and thermal variation decreased growth, calcification and physiological rates, both individually and interactively. The 1 d thermal variation frequencies were less inhibitory than 2 d variations under high temperatures, indicating that high-frequency thermal fluctuations may reduce heat-induced mortality and mitigate some impacts of extreme high-temperature events. Cellular elemental composition and calcification was significantly affected by both thermal variation treatments relative to each other and to the constant temperature controls. The negative effects of thermal variation on E. huxleyi growth rate and physiology are especially pronounced at high temperatures. These responses of the key marine calcifier E. huxleyi to warmer, more variable temperature regimes have potentially large implications for ocean productivity and marine biogeochemical cycles under a future changing climate. For a complete list of measurements, refer to the full dataset description in the supplemental file 'Dataset_description.pdf'. The most current version of this dataset is available at: https://www.bco-dmo.org/dataset/782921
    Description: NSF Division of Ocean Sciences (NSF OCE) OCE-1538525
    Keywords: Thermal Performance Curves ; Growth Rates ; Emiliania huxleyi ; Climate change ; Calcification ; Elemental quotas
    Repository Name: Woods Hole Open Access Server
    Type: Dataset
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  • 7
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    Vertical profiles of chemistry within and above a mussel bed established in a laboratory flow tunnel at the Bodega Marine Laboratory, CA in 2017. (2022)
    Biological and Chemical Oceanography Data Management Office (BCO-DMO). Contact: bco-dmo-data@whoi.edu
    Details
    Publication Date: 2022-10-31
    Description: Dataset: Effects of mussels on seawater chemistry - vertical profiles
    Description: This dataset represents vertical profiles of chemistry within and above a mussel bed established in a laboratory flow tunnel at the Bodega Marine Laboratory, University of California, Davis in 2017. Alkalinity profiles using pH and O2 profiles were used to calculate calcification and respiration rates of mussel beds. For a complete list of measurements, refer to the full dataset description in the supplemental file 'Dataset_description.pdf'. The most current version of this dataset is available at: https://www.bco-dmo.org/dataset/866304
    Description: NSF Division of Ocean Sciences (NSF OCE) OCE-1636191
    Keywords: Mytilus californicus ; Mussel bed ; Biogenic habitat ; Foundation species ; Carbonate chemistry ; Chemical gradients ; Calcification ; Respiration ; Flow speed ; PH ; Oxygen
    Repository Name: Woods Hole Open Access Server
    Type: Dataset
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  • 8
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    Coral (Porites rus) calcification and chemistry data from outdoor flumes at the UCB Gump Research Station Moorea, French Polynesia in April and March of 2012 (2020)
    Biological and Chemical Oceanography Data Management Office (BCO-DMO). Contact: bco-dmo-data@whoi.edu
    Details
    Publication Date: 2022-10-31
    Description: Dataset: Comeau 2013: calcification and chemistry
    Description: Coral calcification and chemistry data from outdoor flumes at the UCB Gump Research Station Moorea, French Polynesia in April and March of 2012. These data were collected as part of a study to assess the effects of feeding and light intensity on the response of the coral Porites rus to ocean acidification. See Comeau et al. (2013) for details of this study. For a complete list of measurements, refer to the full dataset description in the supplemental file 'Dataset_description.pdf'. The most current version of this dataset is available at: https://www.bco-dmo.org/dataset/754661
    Description: NSF Division of Ocean Sciences (NSF OCE) OCE-0417412, NSF Division of Ocean Sciences (NSF OCE) OCE-1041270, NSF Division of Ocean Sciences (NSF OCE) OCE-1026851
    Keywords: Moorea Coral Reef LTER ; Coral reefs ; Calcification
    Repository Name: Woods Hole Open Access Server
    Type: Dataset
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  • 9
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    Observations and a model of net calcification declines in Palau's largest coral reef lagoon between 1992 and 2015 (2020)
    American Geophysical Union
    Details
    Publication Date: 2022-10-26
    Description: Author Posting. © American Geophysical Union, 2020. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research: Oceans 125(8), (2020): e2020JC016147, doi:10.1029/2020JC016147.
    Description: Net ecosystem calcification (NEC) rates of Palau's largest lagoon and barrier reef system between 1992 and 2015 are estimated from sparse total alkalinity (TA) and salinity measurements and a tidal exchange model in which surface lagoon water transported offshore on the ebb tide is replaced by saltier (denser) ocean water that sinks to the bottom after entering the lagoon on the flood tide. Observed lagoon salinities are accurately reproduced by the model with no adjustable parameters. To accurately reproduce observed lagoon TA, NEC for the lagoon‐barrier reef system was 70 mmols m−2 day−1 from 1992 to 1998, 35 mmols m−2 day−1 from 1999 to 2012, and 25 mmols m−2 day−1 from 2013 to 2015. This indicates that Palau's largest lagoon and barrier reef system has not recovered, as of 2015, from the 50% decline in NEC in 1998 caused by the loss of coral cover following a severe bleaching event. The cause of the further decline in NEC in 2012–2013 is unclear. Lagoon residence times vary from 8 days during spring tides to 14 days during neap tides and drive substantial spring‐neap variations in lagoon TA (~25% of the mean salinity‐normalized ocean‐lagoon TA difference). Sparse measurements that do not resolve these spring‐neap variations can exhibit apparent long‐term variations in alkalinity that are not due to changes in NEC.
    Description: This work was partially supported by NSF award 1220529 to A.L.C., S.J.L., and K.E.F.S and NSF award 1737311 to A.L.C. and the Oceanography Department, Texas A&M University K.E.F.S.
    Description: 2021-01-06
    Keywords: Coral reef ; Calcification ; Bleaching ; Residence time ; Net ecosystem calcification ; Palau
    Repository Name: Woods Hole Open Access Server
    Type: Article
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  • 10
    Electronic Resource
    Electronic Resource
    Calcium binding by a lipid extract ofBacterionema matruchotii (1968)
    Springer
    Calcified tissue international 2 (1968), S. 296-298 
    Details
    ISSN: 1432-0827
    Keywords: Calcium ; Lipid ; Bacteria ; Calcification
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine , Physics
    Description / Table of Contents: Résumé On a fait ce travail pour determiner si le facteur responsable pour la liaison de calcium par un calcifableBacterionema matruchotii est dans la fraction lipide de la cellule. Des cellules congelees et sechees ont ete extraites par le chloroform-methanol. La fraction de chloroform-methanol, les cellules extraites et les cellules non traitees ont ete examinees pour la liaison de calcium. La fraction du chloroform-methanol et les cellules non traitees avaient la liaison de calcium. Les cellules extraites n'en avaient pas.
    Abstract: Zusammenfassung Diese Arbeit wurde durchgeführt um festzustellen, ob sich der Faktor für die Calcium-bindung, durch das calcifizierendeBacterionema matruchotii, in der Lipoidfraktion befindet. Die lyophiilisierten Zellen wurden mit Chloroform-Methanol extrahiert. Die Chloroform-Methanol-Fraktion, die extrahierten Zellen, sowie die nicht behandelten Zellen wurden auf eine Calciumbindung hin untersucht. Die Chloroform-Methanol-Fraktion und die nicht behandelten Zellen demonstrierten eine Calciumbindung. Die extrahierten Zellen hingegen nicht.
    Notes: Abstract This work was done to determine whether the factor responsible for calcium binding by a calcifiableBacterionema matruchotii is in the lipid fraction of the cell. Freeze-dried cells were extracted with chloroform-methanol. The chloroform-methanol fraction, the extracted cells and untreated cells were examined for calcium binding. The chloroform-methanol fraction and the untreated cells bound calcium. The extracted cells did not.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02279217
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