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  • 1
    Keywords: Ecology Mediterranean Sea ; Mediterranean Sea Environmental conditions ; Mediterranean Sea Research ; Aufsatzsammlung ; Mittelmeerraum ; Historische Umweltforschung ; Umweltgeologie
    Type of Medium: Book
    Pages: XV, 678 S. , Ill., graph. Darst., Kt.
    ISBN: 9789400767034
    RVK:
    Language: English
    Note: Literaturangaben
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  • 2
    Keywords: Life sciences ; Aquatic ecology ; Freshwater ; Life Sciences ; Oceanography ; Animal ecology ; Invertebrates ; Marine sciences ; Aquatic biology
    Description / Table of Contents: This volume presents a broad panorama of the current status of research of invertebrate animals considered belonging to the phylum Cnidaria, such as hydra, jellyfish, sea anemone, and coral. In this book the Cnidarians are traced from the Earth’s primordial oceans, to their response to the warming and acidifying oceans. Due to the role of corals in the carbon and calcium cycles, various aspects of cnidarian calcification are discussed. The relation of the Cnidaria with Mankind is approached, in accordance with the Editors’ philosophy of bridging the artificial schism between science, arts and Humanities. Cnidarians' encounters with humans result in a broad spectrum of medical emergencies that are reviewed. The final section of the volume is devoted to the role of Hydra and Medusa in mythology and art
    Type of Medium: Online Resource
    Pages: Online-Ressource (XX, 855 p. 288 illus., 182 illus. in color, online resource)
    ISBN: 9783319313054
    Series Statement: SpringerLink
    Language: English
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  • 3
    Online Resource
    Online Resource
    Dordrecht :Springer Netherlands,
    Keywords: Geology -- Mediterranean Sea. ; Mediterranean Sea. ; Electronic books.
    Description / Table of Contents: This richly illustrated book offers a multidisciplinary exploration of the Mediterranean Sea, from its geological birth to its myths, its place in biology and in the origins of Western human culture and its future in the changing global climate and economy.
    Type of Medium: Online Resource
    Pages: 1 online resource (673 pages)
    Edition: 1st ed.
    ISBN: 9789400767041
    DDC: 551.46138
    Language: English
    Note: Intro -- Preface -- Contents -- Contributors -- Part I: Geology, Chemical and Physical Oceanography -- 1: The Geological Origins and Paleoceanographic History of the Mediterranean Region: Tethys to Present -- Introduction -- A Brief Synthesis of the Geological Evolution of the Mediterranean Region -- Paleoecology of Tethyan Carbonate Platforms as Trackers of Its Geological Evolution and Associated Paleoceanographic Changes -- After the Mediterranean Closure -- The Anoxic Events (Sapropels) -- References -- 2: A Channeled Shelf Fan Initiated by Flooding of the Black Sea -- Introduction -- Prior Observations -- Shelf Fan Morphology -- Seismic Stratigraphy -- Litho- and Bio-Stratigraphy -- Methods -- New Results -- Survey Area 1-2 -- Survey Area 4 -- Survey Area 3 -- Transit Line -- Discussion -- Hypothesis to Be Evaluated for the Origin of the Shelf Fan -- Lowstand River Delta -- Construction Delayed After the Initial Mediterranean Connection -- Initiated with the Entry of Mediterranean Water Coincident with a Lowstand Lake -- Examples of Other Flooding Events -- Combination of Processes -- Conclusions -- References -- 3: Past, Present and Future Patterns of the Thermohaline Circulation and Characteristic Water Masses of the Mediterranean Sea -- Introduction -- Past and Present Status of the Thermohaline Circulation -- The Open Thermohaline Cell -- Atlantic Water -- Levantine Intermediate Water -- The Closed Thermohaline Cells -- Eastern Mediterranean Deep Water -- Western Mediterranean Deep Water -- Climate Transient Events -- Eastern Mediterranean Transient -- Western Mediterranean Transition -- The Mediterranean Outflow -- Long-Term Hydrological Changes -- Future Projections of the Thermohaline Circulation -- Implications of Thermohaline Circulation and Hydrological Changes on Mediterranean Marine Ecosystems -- Summary -- References. , 4: Past, Present and Future Patterns in the Nutrient Chemistry of the Eastern Mediterranean -- Introduction -- General and Mesoscale Circulation and Changes in the Circulation -- Description of the Present Distribution of Nutrients and Dissolved Oxygen and Changes Over the Past 25 years -- Description of Typical Vertical Profiles of Nutrients and Dissolved Oxygen -- Cross Basin Distribution and How They Have Changed with Time -- Dissolved and Particulate Organic Carbon and Nutrients -- Biogeochemical and Nutrient Cycling Processes -- Processes Related to the Unusually High N:P Ratio in the EMS -- Nitrate: Phosphate Ratio in the Deep Water -- The Eastern Mediterranean as a P Starved System -- Seasonal Changes in Primary Production and Nutrient Limitation -- Is the Nutrient Uptake in the Surface Waters Redfieldian? -- Nitrogen Fixation -- Physics Induced Bio-chemical Processes -- Use of Nutrient Budgets to Define Biogeochemical Processes -- Oceanic, Terrestrial and Atmospheric Nutrient Inputs -- Changes in External Nutrient Fluxes into the EMS with Time -- Changes in the Nutrient Supply from 1950 to 2000 -- What Was the Level of Nutrient Supply Prior to Anthropogenic Inputs? -- Possible Factors Which Will Influence Future Changes in Nutrient Distribution -- Future Circulation Changes That Might Affect Nutrient Distribution -- Is the EMS Particularly Vulnerable to Climate and Environmental Change? -- References -- 5: Marine Chemosynthesis in the Mediterranean Sea -- Introduction -- Modern Mediterranean Chemosynthetic Habitats -- Hydrothermal Vents -- Cold Seeps -- Historical Legacy of Chemosynthesis -- Threats to Mediterranean Chemosynthetic Habitats -- A Call for Protecting Chemosynthetic Habitats in the Mediterranean Past and Present -- MPAs for Extant Habitats -- Geosites -- References -- Part II: Ecology: Taxa and Trophic Levels. , 6: Microbial Components -- Introduction -- Main Groups and Trophic Roles of Microbial Plankton -- Fertilization Mechanisms in the Mediterranean -- Overview of Diversity of the Main Microbial Groups -- Phytoplankton -- Temporal Distribution and Vertical Organization of Phytoplankton Biomass -- Phytoplankton Composition -- Cyanobacteria -- Diatoms (Bacillariophyceae) -- Dinoflagellates (Dinophyceae) -- Prymnesiophyceae -- Other Groups -- Generalities on Phytoplankton Community Structure and Function -- The Seasonal Succession of Phytoplankton -- Harmful Algal Blooms in the Mediterranean -- Long-Term Temporal Variability -- Viruses and Heterotrophic Microbes -- Viruses -- Heterotrophic Prokaryotes -- Heterotrophic Pico- and Nanoflagellates -- Ciliates -- Microbial and Classical Food Webs. The Example of the Catalan Sea -- References -- 7: The Mediterranean Sea - Primary Productivity -- The Past - Paleoecology: Fossil Records -- The Mediterranean Sea Today: Ecology -- The Primary Producers in the Mediterranean Sea -- Spacial Aspect of Primary Production in the Mediterranean -- Seasonal Hydrodynamics of the Water Column and Nutrient Control -- Light Control -- Future Scenarios - Ecological Effects -- References -- 8: Autochthonous Seaweeds -- Introduction: What It Is Seaweed? -- How Many Different Seaweeds Are There in the Mediterranean Sea? -- The Origin of Seaweeds in the Mediterranean Sea -- Spatial Patterns of Seaweed Richness in the Mediterranean Sea -- Potential Effects of Climatic and Non- climatic Drivers on Mediterranean Seaweeds -- Temperature and Carbon Sink -- Ocean Acidification and Photosynthetic Metabolism -- UV Radiation -- Interactive Effect of Climate Change Variables: Temperature, UV Radiation and Acidification -- Sea Level Rise -- Future Research to Evaluate the Vulnerability of the Macrophytes to Climate Change. , Present Status of Mediterranean Seaweeds Communities and Its Relation to the Ecological Status of Coastal Waters -- References -- 9: Autochthonous Seagrasses -- Introduction -- Mediterranean Seagrass Species: Distribution, Biology and Ecology -- Posidonia oceanica (Linnaeus) Delile -- Cymodocea nodosa (Ucria) Ascherson -- Zostera marina Linnaeus -- Zostera noltii Hornemann -- Disturbances in Seagrass Meadows -- Anthropogenic Non-climatic Causes -- Mechanical Habitat Destruction -- Eutrophication -- Introduced Species -- Climate Change Potential Causes -- CO2 Increase and Acidification -- Temperature -- Sea Level Rise, Coastal Erosion and Climatic Extremes -- Interaction Between Non-climatic Anthropogenic and Climatic Drivers -- Management and Conservation of Mediterranean Seagrasses -- Protection and Management Measures -- Restoration Measures -- References -- 10: Alien Benthic Algae and Seagrasses in the Mediterranean Sea and Their Connection to Global Warming -- Alien Invasion in the Mediterranean -- Alien Algae and Seagrasses in the Mediterranean Sea -- Alien Seaweeds and Their Impact in the Israeli Mediterranean -- Halophila stipulacea - An Old-Timer Invasive Alien Seagrass in the Mediterranean -- Shellfish Transfer and Alien Seaweed Invasion: A Study Case from the Gulf of Lion -- Global Warming and Alien Seaweed Introduction in the Mediterranean -- How Should We Deal with the Alien Invasion in the Mediterranean Sea? -- References -- 11: The Zooplankton -- Introduction -- The Physical Framework for Zooplankton -- Driving Mechanisms for Plankton Production -- Seasonal Patterns -- Vertical Structure -- Near-Bottom Zooplanktonic Communities -- Horizontal Distribution Patterns at the Mesoscale -- Long-Term Changes -- The Time Series at Station Point B off Villefranche-sur-Mer -- The Time Series at Station Marechiara Off Naples. , The Time Series at the Baleares Station off Mallorca -- General Remarks -- Jellyfish Blooms and Changes in Fauna -- References -- 12: Zoobenthos -- Introduction -- Environmental Gradients -- Spatial Trends and Variability -- Zoobenthic Assemblages and Communities on Hard Substrata -- Supralittoral -- Mediolittoral -- Infralittoral -- Circalittoral -- Bathyal -- Zoobenthic Assemblages and Communities on Soft-Bottoms -- Infralittoral -- Circalittoral -- Deep-Sea -- Bathyal and Abyssal -- Cold Seeps -- Ecological Strategies -- Temporal Variability -- Plankton and Benthic-Pelagic Coupling -- Algae Dominated Communities and Sea-Grass Communities -- Vagile Fauna -- Animal-Dominated Communities -- Tendencies -- Directly Man-Induced Pressures -- Fishing Activity -- Nutrient Increase -- Harvesting -- Local Impacts -- Natural and/or Indirectly Man-Induced Pressures -- Increasing Temperature -- Ocean Acidification -- Easterly Wind-Storms -- Biological Invasions -- References -- 13: Foraminifera -- Introduction -- What Are Foraminifera? -- How Foraminifera Can Be Used in Applied Science -- Ecology of Benthic Foraminifera -- The Early Works on Mediterranean Foraminifera -- The Last 30 Years of Efforts in the Study of Benthic Foraminifera -- Problems in the Sampling Methodology -- The Hard vs. Soft Shelled Foraminifera Issue -- The Last Frontier in the Study of Foraminifera -- Concluding Remarks -- References -- 14: Mediterranean Corals Through Time: From Miocene to Present -- Introduction -- Mediterranean Coral Fauna in the Miocene -- Early-Middle Miocene -- Late Miocene -- Coral Responses to a Cooling Mediterranean: From the Pliocene to the Glacial Ages -- Pliocene -- Pleistocene -- Present Coral Fauna: NE Atlantic Relict -- Corals Other than Scleractinians -- Corals as Palaeoceanographic Archives -- Biodiversity of Tomorrow -- Discussion and Final Remarks. , References.
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  • 4
    ISSN: 1432-234X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract  Spermatogenesis ultrastructure was studied in a simultaneous hermaphrodite population of the solitary coral Balanophyllia europaea. In this species, spermatogenesis takes place in spermatocysts located within gametogenetic mesenteries surrounded by a bilayered boundary. Spermatogonia and spermatocytes are large flagellate cells, densely packed at the outermost edges of the spermatocyst. Spermatids and sperm are loosely distributed near the centre of the spermatocyst. The cytoplasm of spermatogonia and primary spermatocytes often contains short lengths of free axonemes, probably derived from the reabsorption of a primitive flagellum. Maturing spermatids either contain long intracytoplasmic axonemes, that may be stages of the tail synthesis, or have a flagellum. The morphological features of the sperm of this hermaphroditic scleractinian, very similar to those observed in the sperm of gonochoric taxa, support the hypothesis that the hermaphroditism of this population is an adaptive condition.
    Type of Medium: Electronic Resource
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  • 5
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    In:  Supplement to: Wall, Marlene; Prada, Fiorella; Fietzke, Jan; Caroselli, Erik; Dubinsky, Zvy; Brizi, Leonardo; Fantazzini, Paola; Franzellitti, Silvia; Montagna, Paolo; Falini, Giuseppe; Goffredo, Stefano (2019): Linking Internal Carbonate Chemistry Regulation and Calcification in Corals Growing at a Mediterranean CO2 Vent. Frontiers in Marine Science, 6, https://doi.org/10.3389/fmars.2019.00699
    Publication Date: 2024-03-15
    Description: Corals exert a strong biological control over their calcification processes, but there is a lack of knowledge on their capability of long-term acclimatization to ocean acidification (OA). We used a dual geochemical proxy approach to estimate the calcifying fluid pH (pHcf) and carbonate chemistry of a Mediterranean coral (Balanophyllia europaea) naturally growing along a pH gradient (range: pHTS 8.07–7.74). The pHcf derived from skeletal boron isotopic composition (δ11B) was 0.3–0.6 units above seawater values and homogeneous along the gradient (mean +/- SEM: Site 1 = 8.39 +/- 0.03, Site 2 = 8.34 +/- 0.03, Site 3 = 8.34 +/- 0.02). Also carbonate ion concentration derived from B/Ca was homogeneous [mean +/- SEM (μmol /kg): Site 1 = 579 +/- 34, Site 2 = 541 +/- 27, Site 3 = 568 +/- 30] regardless of seawater pH. Furthermore, gross calcification rate (GCR, mass of CaCO3 deposited on the skeletal unit area per unit of time), estimated by a “bio-inorganic model” (IpHRAC), was homogeneous with decreasing pH. The homogeneous GCR, internal pH and carbonate chemistry confirm that the features of the “building blocks” – the fundamental structural components – produced by the biomineralization process were substantially unaffected by increased acidification. Furthermore, the pH up-regulation observed in this study could potentially explain the previous hypothesis that less “building blocks” are produced with increasing acidification ultimately leading to increased skeletal porosity and to reduced net calcification rate computed by including the total volume of the pore space. In fact, assuming that the available energy at the three sites is the same, this energy at the low pH sites could be partitioned among fewer calicoblastic cells that consume more energy given the larger difference between external and internal pH compared to the control, leading to the production of less building blocks (i.e., formation of pores inside the skeleton structure, determining increased porosity). However, we cannot exclude that also dissolution may play a role in increasing porosity. Thus, the ability of scleractinian corals to maintain elevated pHcf relative to ambient seawater might not always be sufficient to counteract declines in net calcification under OA scenarios.
    Keywords: Acid-base regulation; Alkalinity, total; Animalia; Aragonite saturation state; Balanophyllia europaea; Benthic animals; Benthos; Bicarbonate ion; Boron/Calcium ratio; Boron/Calcium ratio, standard error; Calcification/Dissolution; Calcification rate of calcium carbonate; Calcifying fluid, aragonite saturation state; Calcifying fluid, carbonate ion; Calcifying fluid, carbonate ion, standard error; Calcifying fluid, dissolved inorganic carbon; Calcifying fluid, dissolved inorganic carbon, standard error; Calcifying fluid, pH; Calcifying fluid, pH, standard error; Calcite saturation state; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Cnidaria; CO2 vent; Coast and continental shelf; Field observation; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Gross calcification rate, relative; Gross calcification rate of calcium carbonate; Mediterranean Sea; Net calcification rate, relative; OA-ICC; Ocean Acidification International Coordination Centre; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); pH; pH change; pH change, standard error; Ratio; Ratio, standard error; Registration number of species; Salinity; Single species; Site; Species; Temperate; Temperature, water; Type; Uniform resource locator/link to reference; δ11B; δ11B, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 1459 data points
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  • 6
    Publication Date: 2024-03-15
    Description: Ocean acidification caused by shifts in ocean carbonate chemistry resulting from increased atmospheric CO2 concentrations is threatening many calcifying organisms, including corals. Here we assessed autotrophy vs heterotrophy shifts in the Mediterranean zooxanthellate scleractinian coral Balanophyllia europaea acclimatized to low pH/high pCO2 conditions at a CO2 vent off Panarea Island (Italy). Dinoflagellate endosymbiont densities were higher at lowest pH Sites where changes in the distribution of distinct haplotypes of a host-specific symbiont species, Philozoon balanophyllum, were observed. An increase in symbiont C/N ratios was observed at low pH, likely as a result of increased C fixation by higher symbiont cell densities. δ13C values of the symbionts and host tissue reached similar values at the lowest pH Site, suggesting an increased influence of autotrophy with increasing acidification. Host tissue δ15N values of 0‰ strongly suggest that diazotroph N2 fixation is occurring within the coral tissue/mucus at the low pH Sites, likely explaining the decrease in host tissue C/N ratios with acidification. Overall, our findings show an acclimatization of this coral-dinoflagellate mutualism through trophic adjustment and symbiont haplotype differences with increasing acidification, highlighting that some corals are capable of acclimatizing to ocean acidification predicted under end-of-century scenarios.
    Keywords: Alkalinity, total; Aragonite saturation state; Balanophyllia europaea; Benthos; Bicarbonate ion; Biomass/Abundance/Elemental composition; Calcite saturation state; Calculated using CO2SYS; Calculated using seacarb after Nisumaa et al. (2010); Carbon; Carbon, inorganic, dissolved; Carbon/Nitrogen ratio; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Category; Chlorophyll a; Chlorophyll a per cell; CO2 vent; Coast and continental shelf; Effective quantum yield; Entire community; Field observation; Fluorescence, maximum; Fluorescence, minimum; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Mediterranean Sea; Nitrogen; OA-ICC; Ocean Acidification International Coordination Centre; Other studied parameter or process; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); pH; Primary production/Photosynthesis; Rocky-shore community; Salinity; Site; Symbiont cell density; Temperate; Temperature, water; Time point, descriptive; Type; δ13C; δ15N
    Type: Dataset
    Format: text/tab-separated-values, 10150 data points
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  • 7
    Publication Date: 2024-03-15
    Keywords: Acetabularia acetabulum; Alkalinity, total; Alkalinity, total, standard deviation; Animalia; Aragonite saturation state; Aragonite saturation state, standard deviation; Balanophyllia europaea; Benthic animals; Benthos; Bicarbonate ion; Bicarbonate ion, standard deviation; Biomass/Abundance/Elemental composition; Calcite saturation state; Calcite saturation state, standard deviation; Calculated using CO2SYS; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard deviation; Carbonate ion; Carbonate ion, standard deviation; Carbonate system computation flag; Carbon dioxide; Chlorophyta; Chromista; Cnidaria; CO2 vent; Coast and continental shelf; Coverage; Elasticity; Elasticity, standard deviation; Field observation; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Hardness; Hardness, standard deviation; Lobophora variegata; Macroalgae; Mediterranean Sea; Minerals; Minerals, standard deviation; Mollusca; OA-ICC; Ocean Acidification International Coordination Centre; Ochrophyta; Other studied parameter or process; Padina pavonica; Partial pressure of carbon dioxide, standard deviation; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); pH; pH, standard deviation; Plantae; Position; Potentiometric; Potentiometric titration; Salinity; Salinity, standard deviation; Single species; Site; Species; Temperate; Temperature, water; Temperature, water, standard deviation; Texture; Vermetus triqueter
    Type: Dataset
    Format: text/tab-separated-values, 15968 data points
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  • 8
    Publication Date: 2024-03-15
    Description: This study investigates the effects of long-term exposure to OA on skeletal parameters of four tropical zooxanthellate corals naturally living at CO2 seeps and adjacent control sites from two locations (Dobu and Upa Upasina) in the Papua New Guinea underwater volcanic vent system. The seeps are characterized by seawater pH values ranging from 8.0 to about 7.7. The skeletal porosity of Galaxea fascicularis, Acropora millepora, massive Porites, and Pocillopora damicornis was higher (up to ~ 40%, depending on the species) at the seep sites compared to the control sites. Pocillopora damicornis also showed a decrease of micro-density (up to 7%). Thus, further investigations conducted on this species showed an increase of the volume fraction of the larger pores (up to 7%), a decrease of the intraskeletal organic matrix content (up to 15%), and an increase of the intraskeletal water content (up to 59%) at the seep sites. The organic matrix related strain and crystallite size did not vary between seep and control sites. This multi-species study showed a common phenotypic response among different zooxanthellate corals subjected to the same environmental pressures, leading to the development of a more porous skeletal phenotype under OA.
    Keywords: Acropora millepora; Alkalinity, total; Alkalinity, total, standard deviation; Animalia; Aragonite saturation state; Benthic animals; Benthos; Bicarbonate ion; Calcite saturation state; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard deviation; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Cnidaria; CO2 vent; Coast and continental shelf; Density; Density, standard deviation; Field observation; Fraction; Fraction, standard deviation; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Galaxea fascicularis; Growth/Morphology; Location; OA-ICC; Ocean Acidification International Coordination Centre; Organic matrix; Organic matrix, standard deviation; Other studied parameter or process; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); pH; pH, standard deviation; Pocillopora damicornis; Porites sp.; Porosity; Porosity, standard deviation; Registration number of species; Replicates; Salinity; Salinity, standard deviation; Single species; Site; South Pacific; Species; Temperature, water; Temperature, water, standard deviation; Tropical; Type; Uniform resource locator/link to reference; Water; Water, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 772 data points
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  • 9
    Publication Date: 2022-01-31
    Description: Corals exert a strong biological control over their calcification processes, but there is a lack of knowledge on their capability of long-term acclimatization to ocean acidification (OA). We used a dual geochemical proxy approach to estimate the calcifying fluid pH (pHcf) and carbonate chemistry of a Mediterranean coral (Balanophyllia europaea) naturally growing along a pH gradient (range: pHTS 8.07–7.74). The pHcf derived from skeletal boron isotopic composition (δ11B) was 0.3–0.6 units above seawater values and homogeneous along the gradient (mean ± SEM: Site 1 = 8.39 ± 0.03, Site 2 = 8.34 ± 0.03, Site 3 = 8.34 ± 0.02). Also carbonate ion concentration derived from B/Ca was homogeneous [mean ± SEM (μmol kg–1): Site 1 = 579 ± 34, Site 2 = 541 ± 27, Site 3 = 568 ± 30] regardless of seawater pH. Furthermore, gross calcification rate (GCR, mass of CaCO3 deposited on the skeletal unit area per unit of time), estimated by a “bio-inorganic model” (IpHRAC), was homogeneous with decreasing pH. The homogeneous GCR, internal pH and carbonate chemistry confirm that the features of the “building blocks” – the fundamental structural components – produced by the biomineralization process were substantially unaffected by increased acidification. Furthermore, the pH up-regulation observed in this study could potentially explain the previous hypothesis that less “building blocks” are produced with increasing acidification ultimately leading to increased skeletal porosity and to reduced net calcification rate computed by including the total volume of the pore space. In fact, assuming that the available energy at the three sites is the same, this energy at the low pH sites could be partitioned among fewer calicoblastic cells that consume more energy given the larger difference between external and internal pH compared to the control, leading to the production of less building blocks (i.e., formation of pores inside the skeleton structure, determining increased porosity). However, we cannot exclude that also dissolution may play a role in increasing porosity. Thus, the ability of scleractinian corals to maintain elevated pHcf relative to ambient seawater might not always be sufficient to counteract declines in net calcification under OA scenarios.
    Type: Article , PeerReviewed , info:eu-repo/semantics/article
    Format: text
    Format: text
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