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Heterotrophic plasticity and resilience in bleached corals (2006)

Rodrigues, Lisa J. ; Palardy, James E. ; Grottoli, Andréa G.

[s.l.] : Nature Publishing Group

Nature 440 (2006), S. 1186-1189

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ISSN: 1476-4687

Source: Nature Archives 1869 - 2009

Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics

Notes: [Auszug] Mass coral bleaching events caused by elevated seawater temperatures have resulted in extensive coral mortality throughout the tropics over the past few decades. With continued global warming, bleaching events are predicted to increase in frequency and severity, causing up to 60% coral ...

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1038/nature04565

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(Table 1) Age determination of sediment core HLY0503-08JPC

Adler, Ruth E ; Polyak, Leonid ; Ortiz, Joseph D ; [et al.]

PANGAEA

In: Supplement to: Adler, Ruth E; Polyak, Leonid; Ortiz, Joseph D; Kaufman, Darrell S; Channell, James E T; Xuan, Chuang; Grottoli, Andréa G; Sellén, Emma; Crawford, Kevin Richard (2009): Sediment record from the western Arctic Ocean with an improved Late Quaternary age resolution: HOTRAX core HLY0503-8JPC, Mendeleev Ridge. Global and Planetary Change, 68(1-2), 18-29, https://doi.org/10.1016/j.gloplacha.2009.03.026

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Publication Date: 2023-06-27

Description: Sediment core HLY0503-8JPC raised by the HOTRAX'05 expedition from the Mendeleev Ridge was analyzed for multiple lithological, paleontological, and stable-isotopic proxies to reconstruct paleoceanographic conditions in the western Arctic Ocean during the Late Quaternary. The core, extensively sampled in the upper 5 m, reveals pronounced changes in sedimentary environments during the ca. 250 kyr interval encompassing Marine Isotopic Stages (MIS) 1 to 7. An estimated average resolution of 500 yr/sample, at least for the last glacial cycle including the last interglacial, provides more detail than seen in other sedimentary records from the western Arctic Ocean. The age control is provided by 14C and amino acid racemization measurements on planktonic foraminifers and correlations with the stratigraphy developed for the central Lomonosov Ridge and with glacial events at the Eurasian Arctic margin. Cyclic variations in lithology combined with foraminiferal abundance and stable-isotopic composition indicate profound changes in hydrographic and depositional environments between interglacial-type and glacial-type periods apparently reflecting a combination of 100-kyr and precessional time scales. This periodicity is complicated by abrupt iceberg- and/or meltwater-discharge events with variable (Laurentide vs. Eurasian) provenance. The proxy record from the interval identified as the last interglacial (MIS 5e), which may aid in understanding the future state of the Arctic Ocean, indicates low ice conditions and possibly enhanced stratification of the water column.

Keywords: Age, 14C AMS; Age, 14C calibrated; Age, dated; Age, dated standard deviation; Calendar age; Calendar age, standard deviation; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Healy; Healy-Oden Trans Arctic Expedition 2005 (HOTRAX05); HLY0503; HLY0503-08JPC; JPC; Jumbo Piston Core; Mendeleev Ridge, Arctic Ocean; Sample ID

Type: Dataset

Format: text/tab-separated-values, 88 data points

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Coral energy reserves and calcification in a high-CO2 world at two temperatures (2018)

Schoepf, Verena ; Grottoli, Andréa G ; Warner, Mark E ; [et al.]

PANGAEA

In: Supplement to: Schoepf, Verena; Grottoli, Andréa G; Warner, Mark E; Cai, Wei-Jun; Melman, Todd F; Hoadley, Kenneth D; Pettay, D Tye; Hu, Xinping; Li, Qian; Xu, Hui; Wang, Yujie; Matsui, Yohei; Baumann, Justin H (2013): Coral Energy Reserves and Calcification in a High-CO2 World at Two Temperatures. PLoS ONE, 8(10), e75049, https://doi.org/10.1371/journal.pone.0075049

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Publication Date: 2024-03-15

Description: Rising atmospheric CO2 concentrations threaten coral reefs globally by causing ocean acidification (OA) and warming. Yet, the combined effects of elevated pCO2 and temperature on coral physiology and resilience remain poorly understood. While coral calcification and energy reserves are important health indicators, no studies to date have measured energy reserve pools (i.e., lipid, protein, and carbohydrate) together with calcification under OA conditions under different temperature scenarios. Four coral species, Acropora millepora, Montipora monasteriata, Pocillopora damicornis, Turbinaria reniformis, were reared under a total of six conditions for 3.5 weeks, representing three pCO2 levels (382, 607, 741 µatm), and two temperature regimes (26.5, 29.0°C) within each pCO2 level. After one month under experimental conditions, only A. millepora decreased calcification (-53%) in response to seawater pCO2 expected by the end of this century, whereas the other three species maintained calcification rates even when both pCO2 and temperature were elevated. Coral energy reserves showed mixed responses to elevated pCO2 and temperature, and were either unaffected or displayed nonlinear responses with both the lowest and highest concentrations often observed at the mid-pCO2 level of 607 µatm. Biweekly feeding may have helped corals maintain calcification rates and energy reserves under these conditions. Temperature often modulated the response of many aspects of coral physiology to OA, and both mitigated and worsened pCO2 effects. This demonstrates for the first time that coral energy reserves are generally not metabolized to sustain calcification under OA, which has important implications for coral health and bleaching resilience in a high-CO2 world. Overall, these findings suggest that some corals could be more resistant to simultaneously warming and acidifying oceans than previously expected.

Keywords: Acropora millepora; Alkalinity, total; Alkalinity, total, standard error; Animalia; Aragonite saturation state; Aragonite saturation state, standard error; Benthic animals; Benthos; Bicarbonate ion; Biomass; Biomass/Abundance/Elemental composition; Calcification/Dissolution; Calcification rate of calcium carbonate; Calcite saturation state; Calculated using CO2SYS; Calculated using seacarb after Nisumaa et al. (2010); Carbohydrates, soluble; Carbon, inorganic, dissolved; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Cell density; Chlorophyll a; Cnidaria; Colony number/ID; Containers and aquaria (20-1000 L or 〈 1 m**2); EXP; Experiment; Fiji; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Identification; Laboratory experiment; Lipids, soluble; Montipora monasteriata; Not applicable; OA-ICC; Ocean Acidification International Coordination Centre; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Partial pressure of carbon dioxide (water) at sea surface temperature (wet air), standard error; pH; pH, standard error; Pocillopora damicornis; Potentiometric titration; Protein/dry weight ratio; Salinity; Single species; Species; Temperature; Temperature, water; Temperature, water, standard error; Tropical; Turbinaria reniformis

Type: Dataset

Format: text/tab-separated-values, 4748 data points

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Physiological response to elevated temperature and pCO2 varies across four Pacific coral species: Understanding the unique host + symbiont response (2015)

Hoadley, Kenneth D ; Pettay, D Tye ; Grottoli, Andréa G ; [et al.]

PANGAEA

In: Supplement to: Hoadley, Kenneth D; Pettay, D Tye; Grottoli, Andréa G; Cai, Wei-Jun; Melman, Todd F; Schoepf, Verena; Hu, Xinping; Li, Qian; Xu, Hui; Wang, Yongchen; Matsui, Yohei; Baumann, Justin H; Warner, Mark E (2015): Physiological response to elevated temperature and pCO2 varies across four Pacific coral species: Understanding the unique host+symbiont response. Scientific Reports, 5, 18371, https://doi.org/10.1038/srep18371

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Publication Date: 2024-03-15

Description: The physiological response to individual and combined stressors of elevated temperature and pCO2 were measured over a 24-day period in four Pacific corals and their respective symbionts (Acropora millepora/Symbiodinium C21a, Pocillopora damicornis/Symbiodinium C1c-d-t, Montipora monasteriata/Symbiodinium C15, and Turbinaria reniformis/Symbiodinium trenchii). Multivariate analyses indicated that elevated temperature played a greater role in altering physiological response, with the greatest degree of change occurring within M. monasteriata and T. reniformis. Algal cellular volume, protein, and lipid content all increased for M. monasteriata. Likewise, S. trenchii volume and protein content in T. reniformis also increased with temperature. Despite decreases in maximal photochemical efficiency, few changes in biochemical composition (i.e. lipids, proteins, and carbohydrates) or cellular volume occurred at high temperature in the two thermally sensitive symbionts C21a and C1c-d-t. Intracellular carbonic anhydrase transcript abundance increased with temperature in A. millepora but not in P. damicornis, possibly reflecting differences in host mitigated carbon supply during thermal stress. Importantly, our results show that the host and symbiont response to climate change differs considerably across species and that greater physiological plasticity in response to elevated temperature may be an important strategy distinguishing thermally tolerant vs. thermally sensitive species.

Keywords: Acropora millepora; Alkalinity, total; Alkalinity, total, standard error; Animalia; Aragonite saturation state; Aragonite saturation state, standard error; Benthic animals; Benthos; Bicarbonate ion; Biomass/Abundance/Elemental composition; Calcite saturation state; Calculated using CO2SYS; Calculated using seacarb after Nisumaa et al. (2010); Carbohydrates; Carbohydrates, per cell; Carbon, inorganic, dissolved; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Cell biovolume; Cnidaria; Coast and continental shelf; Containers and aquaria (20-1000 L or 〈 1 m**2); EXP; Experiment; Fiji; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Gene expression (incl. proteomics); Gene name; Gross photosynthesis/respiration ratio; Group; Growth/Morphology; Laboratory experiment; Light enhanced dark respiration, oxygen; Lipid content; Lipids per cell; Maximum photochemical quantum yield of photosystem II; Montipora monasteriata; mRNA gene expression, relative; North Pacific; OA-ICC; Ocean Acidification International Coordination Centre; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Partial pressure of carbon dioxide (water) at sea surface temperature (wet air), standard error; pH; pH, standard error; Pocillopora damicornis; Potentiometric; Potentiometric titration; Primary production/Photosynthesis; Protein per cell; Proteins; Registration number of species; Respiration; Salinity; Single species; Species; Symbiont cell density; Temperature; Temperature, water; Temperature, water, standard error; Treatment; Tropical; Turbinaria reniformis; Type; Uniform resource locator/link to reference

Type: Dataset

Format: text/tab-separated-values, 21425 data points

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Seawater carbonate chemistry and coral physiology in 22-month mesocosm experiment (2023)

Price, James T ; McLachlan, Rowan H ; Jury, Christopher P ; [et al.]

PANGAEA

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Publication Date: 2024-03-15

Description: This dataset includes physiological parameters of three Hawaiian coral species (Porites compressa, Porites lobata, and Montipora capitata) over 22-month mesocosm experiment. The corals were exposed to one of four treatments: control, ocean acidification, ocean warming, or combined future ocean conditions.

Keywords: Alkalinity, total; Alkalinity, total, standard deviation; Animalia; Aragonite saturation state; Aragonite saturation state, standard deviation; Behaviour; Benthic animals; Benthos; Bicarbonate ion; Bicarbonate ion, standard deviation; Biomass; Biomass/Abundance/Elemental composition; Calcification/Dissolution; Calcification rate of calcium carbonate; Calcite saturation state; Calcite saturation state, standard deviation; Calculated using CO2SYS; Calculated using seacarb after Nisumaa et al. (2010); Calculated using seacarb after Orr et al. (2018); Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard deviation; Carbonate ion; Carbonate ion, standard deviation; Carbonate system computation flag; Carbon dioxide; Carbon dioxide, standard deviation; Cnidaria; Coast and continental shelf; Code; Containers and aquaria (20-1000 L or 〈 1 m**2); Contribution; Entire community; EXP; Experiment; Feeding rate; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Fugacity of carbon dioxide in seawater, standard deviation; Gross photosynthesis rate, oxygen; Haleiwa; Identification; Laboratory experiment; Lipid content; Lipids; Lipids, per unit dry mass; MokuoLoe_OA; Montipora capitata; Mortality/Survival; Net photosynthesis rate, oxygen; North Pacific; OA-ICC; Ocean Acidification International Coordination Centre; Partial pressure of carbon dioxide, standard deviation; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); pH; pH, standard deviation; Porites compressa; Porites lobata; Potentiometric titration; Primary production/Photosynthesis; Protein per surface area; Proteins; Proteins, per unit dry mass; Respiration; Respiration rate, oxygen; Rocky-shore community; Salinity; Salinity, standard deviation; Sampan_Channel; Single species; Site; Species, unique identification; Species, unique identification (Semantic URI); Species, unique identification (URI); Spectrophotometric; Symbiodiniaceae; Symbiodiniaceae, per dry mass; Temperature; Temperature, water; Temperature, water, standard deviation; Total organic carbon, flux; Total organic carbon, per dry mass, flux; Treatment; Tropical; Type of study; Waimanalo; Whiteness

Type: Dataset

Format: text/tab-separated-values, 16188 data points

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