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  • PANGAEA  (232)
  • Elsevier  (3)
  • Dordrecht :Springer Netherlands,  (1)
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  • 1
    Online Resource
    Online Resource
    Dordrecht :Springer Netherlands,
    Keywords: Carbon sequestration. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (577 pages)
    Edition: 1st ed.
    ISBN: 9789400741591
    DDC: 577.144
    Language: English
    Note: Intro -- Recarbonization of the Biosphere -- Foreword -- Preface -- Editors Personal Profiles -- Contents -- Contributors -- Chapter 1: Terrestrial Biosphere as a Source and Sink of Atmospheric Carbon Dioxide -- 1.1 Introduction -- 1.2 Loss of Carbon from the Terrestrial Biosphere -- 1.3 Recarbonization of the Terrestrial Biosphere -- 1.4 Policy Implications -- 1.5 Conclusions -- References -- Chapter 2: Climate Change Mitigation by Managing the Terrestrial Biosphere -- 2.1 Introduction -- 2.2 Principal World Biomes -- 2.2.1 Low-Latitude Biomes -- 2.2.1.1 Tropical Forests -- 2.2.1.2 Tropical Savannas and Grasslands -- 2.2.1.3 Deserts and Semi-deserts -- 2.3 Mid-latitude Biomes -- 2.3.1 Temperate Grasslands and Shrublands -- 2.3.2 Temperate Forests -- 2.4 High Latitude Biomes -- 2.4.1 Boreal Forests -- 2.4.2 Tundra -- 2.4.3 Alpine Biome -- 2.5 Principal Soils and Their Carbon Pools -- 2.6 Anthromes -- 2.7 Terrestrial Biosphere as a Source of Carbon -- 2.8 Carbon Sequestration -- 2.9 Priority Land Uses and Biomes for Recarbonization of the Biosphere -- 2.9.1 Peatlands -- 2.9.2 Degraded Soils and Desertified Ecosystems -- 2.9.3 Agricultural Soils -- 2.9.4 Urban Ecosystems -- 2.10 Conclusions and Priorities -- References -- Chapter 3: Atmospheric Chemistry and Climate in the Anthropocene -- 3.1 Introduction -- 3.2 Changes in the Biosphere -- 3.3 Human Alterations of Global Biogeochemical Cycles -- 3.4 Atmospheric Chemistry -- 3.5 Climate in the Anthropocene -- 3.6 The Evidence of Climate Change -- 3.7 Mitigating Climate Change -- 3.7.1 Reductions in Anthropogenic Greenhouse Gas Emissions -- 3.7.2 Reductions in Greenhouse Gas Emissions from Energy Production -- 3.8 Climate Engineering -- 3.9 Summary -- References -- Chapter 4: Historic Changes in Terrestrial Carbon Storage -- 4.1 Introduction -- 4.1.1 The Global Carbon Budget 1850-2005. , 4.2 Direct Human Effects on De- and Re-carbonization -- 4.2.1 Losses Before 1850 -- 4.2.2 Losses Between 1850 and 2005 -- 4.2.2.1 Deforestation -- 4.2.2.2 Degradation -- 4.2.2.3 Reforestation and Management -- 4.3 Summary and Conclusions -- 4.3.1 The Past -- 4.3.2 The Future -- References -- Chapter 5: Soil Erosion and Soil Organic Carbon Storage on the Chinese Loess Plateau -- 5.1 Introduction -- 5.2 Study Area -- 5.3 Material and Methods -- 5.3.1 Soil-Sediment Sequence Analysis -- 5.3.2 Differential Global Positioning System Measurements -- 5.3.3 Map Analysis -- 5.3.4 Expert Interviews -- 5.3.5 Quantification of Water Erosion and Mass Balances -- 5.4 Results -- 5.4.1 Soil-Sediment Sequence Analysis -- 5.4.2 Results of the DGPS Measurements, Expert Interviews and Map Analysis -- 5.5 Discussion -- 5.5.1 Case Study Results -- 5.5.1.1 Soil-Sediment Sequence Analysis -- 5.5.1.2 DGPS Measurements, Map Analysis and Expert Interviews -- 5.6 Soil Erosion Rates and the Soil Carbon Balance on the Chinese Loess Plateau -- 5.7 Conclusions -- References -- Chapter 6: Methane Emissions from China's Natural Wetlands: Measurements, Temporal Variations and Influencing Factors -- 6.1 Introduction -- 6.2 Wetland Area and Changes in China -- 6.3 Methane Emissions from China's Wetlands -- 6.3.1 Peatlands -- 6.3.2 Coastal Wetlands -- 6.3.3 Lakes -- 6.3.4 Reservoirs -- 6.3.5 Geographical Variation in Methane Emissions -- 6.4 Temporal Variation in Methane Emissions -- 6.4.1 Diel Variation -- 6.4.2 Seasonal Variation -- 6.4.3 Inter-annual Variation -- 6.5 Environmental Variables and Their Effects on Methane Emissions -- 6.5.1 Solar Radiation -- 6.5.2 Temperature -- 6.5.3 Hydrology -- 6.5.4 Vegetation -- 6.5.5 Other Factors -- 6.6 Regional and National Estimates of Methane Emission -- 6.7 Conclusions and Outlook -- References. , Chapter 7: Accounting More Precisely for Peat and Other Soil Carbon Resources -- 7.1 Introduction -- 7.2 Peat Formation -- 7.3 Ecological Characteristics of Peatlands and Other Ecosystems Rich in Soil C -- 7.4 Predominant Soils of Peatlands and Other Ecosystems Rich in Soil C -- 7.5 Distribution of Peatland and Hydromorphic Soils -- 7.6 Differences Between Wetland and Non Wetland Soils -- 7.6.1 A Case Study South Africa -- 7.7 Global Soil Carbon Hot Spots: Potential Sources for Atmospheric CO 2 -- 7.8 Peatland Conversion to Agricultural Use -- 7.9 Interaction with the Climate System -- 7.10 Climate Change and the C Cycle in Peatlands -- 7.11 Distribution of Soil Carbon Resources -- 7.12 Peat Extraction -- 7.13 Peat Restoration -- 7.14 Feedbacks to Climate Change -- 7.15 Remote Sensing Possibilities to Capture Peat- and Wetland More Precisely -- 7.16 Conclusions -- References -- Chapter 8: Permafrost - Physical Aspects, Carbon Cycling, Databases and Uncertainties -- 8.1 Permafrost: A Phenomenon of Global Significance -- 8.2 Permafrost: Definition, Distribution and History -- 8.3 Physical Factors Affecting the Permafrost Thermal Regime -- 8.3.1 Permafrost Temperatures -- 8.3.2 Active Layer Dynamics -- 8.3.3 Land Cover -- 8.3.4 Surface Energy Balance -- 8.4 Carbon Stocks and Carbon Mobilization -- 8.4.1 Carbon Stocks of Soils and Deeper Permafrost -- 8.4.2 Carbon Mobilization -- 8.4.3 Arctic Coasts, Subsea Permafrost, and Gas Hydrates -- 8.5 Modeling Permafrost and Carbon Cycling Under a Changing Climate -- 8.5.1 Modeling Permafrost and Implementing Physical Permafrost Processes in Global Models -- 8.5.2 Permafrost-Atmosphere Feedback Through a Modified Surface Energy Balance -- 8.5.3 Modeling the Permafrost-Carbon Feedback -- 8.6 Conclusions and Recommendations -- References -- Chapter 9: Carbon Sequestration in Temperate Forests -- 9.1 Introduction. , 9.2 Soils of Temperate Forests -- 9.3 Impact of Fire on Ecosystem Carbon Pool -- 9.4 Factors Affecting Carbon Sequestration in Forest Ecosystems -- 9.5 Temperate Forests and the Missing/Unidentified Carbon Sink -- 9.6 Climate Change and Carbon Storage in Temperate Forests -- 9.7 Potential of Temperate Forests to Recarbonization of the Biosphere -- 9.8 Conclusions -- References -- Chapter 10: Decarbonization of the Atmosphere: Role of the Boreal Forest Under Changing Climate -- 10.1 Introduction -- 10.1.1 Climate -- 10.1.2 Landscape and Plant Species -- 10.2 Carbon Balance of the Boreal Forest -- 10.2.1 Carbon Stocks -- 10.2.2 Carbon Fluxes -- 10.3 Carbon Balance of Boreal Peatlands -- 10.3.1 Forestation of Peatlands -- 10.4 Global Change and the Boreal Forest -- 10.4.1 Interaction with Climate Change -- 10.4.2 Effects of Disturbance -- 10.4.3 Land Use Change -- 10.5 Increasing C Sequestration in the Boreal Forest -- 10.5.1 Management -- 10.6 Conclusions -- References -- Chapter 11: Recarbonization of the Humid Tropics -- 11.1 Introduction -- 11.1.1 Humid Tropical Forest -- 11.2 Current State of Knowledge of C Stocks and Fluxes in the Humid Tropics -- 11.2.1 C Pools -- 11.2.2 C Fluxes -- 11.3 Options for Recarbonizing the Humid Tropics -- 11.3.1 Protecting Existing Forest by Reducing Deforestation -- 11.3.2 Reducing Forest Degradation Through Reduced Impact Logging -- 11.3.3 Forest Rehabilitation Through Accelerated Natural Regeneration -- 11.3.4 Converting Degraded Non-forest Lands to Forests -- 11.3.4.1 Agroforestry -- 11.3.4.2 Monocultures in Short Rotations -- 11.3.4.3 Polycultures in Long Rotations -- 11.3.4.4 Restoration Plantings -- 11.3.5 Recarbonization Options Discussed -- 11.4 Recarbonizing Policies Under United Nations Framework Convention on Climate Change (UNFCCC) -- 11.5 Concluding Remarks -- References. , Chapter 12: Carbon Cycling in the Amazon -- 12.1 Introduction -- 12.2 The Brazilian Amazon General Characterization -- 12.3 Scenarios of Soil Carbon Sequestration in the Amazon -- 12.3.1 Primary Forest (Avoided Deforestation) -- 12.3.2 Conversion of Forest to Well Managed Pasture -- 12.3.3 Conversion from Degraded to Well Managed Pasture -- 12.3.4 Conversion from Degraded Pasture to Secondary Forest (Abandonment) and Existing Secondary Forest -- 12.3.5 Conversion from Degraded Pasture to Agroforestry -- 12.4 Potential of Soil and Biomass Carbon Sequestration in the Brazilian Amazon -- 12.5 Conclusions -- References -- Chapter 13: Grassland Soil Organic Carbon Stocks: Status, Opportunities, Vulnerability -- 13.1 Introduction -- 13.2 Background -- 13.2.1 Grasslands Cover Broad Areas, Contribute Substantially to Livelihoods, and Are Vulnerable -- 13.2.2 Grasslands Are Intensively Used and Degradation Is Widespread -- 13.3 Opportunities for Greenhouse Gas Mitigation in Grasslands -- 13.3.1 Carbon Sequestration in Grasslands -- 13.3.2 Reduced Carbon Emissions Through Reduced Grassland Degradation -- 13.3.3 Practices That Sequester Carbon in Grasslands Often Enhance Productivity -- 13.3.4 Practices That Sequester Carbon in Grasslands Can Enhance Adaptation to Climate Change -- 13.4 Challenges to Greenhouse Gas Mitigation Through Grassland Management -- 13.4.1 Challenges to Developing Workable Policies and Incentives -- 13.4.2 Demonstrating Additionality Is a Formidable Challenge -- 13.4.3 Carbon Sequestered in Grassland Systems Is Subject to Reversals -- 13.4.4 Well-Intentioned Policies Do Not Necessarily Lead to Good Practices -- 13.4.5 Land Tenure and Governance Issues Complicate Policy Implementation -- 13.4.6 Systems for Documenting Carbon Stocks Changes Have Not Been Agreed Upon -- 13.4.6.1 Practice-Based Estimates of Soil Carbon Sequestration. , 13.4.6.2 Combining Measurement with Mechanistic Modeling.
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  • 2
    Publication Date: 2019-09-23
    Description: Three new metabolites, 5-hydroxy-3,7-dimethoxyflavone-4′-O-β-glucopyranoside (1), 2β,19-epoxy-3β,14β-dihydroxy-19-methoxy-5α-card-20(22)-enolide (4) and β-anhydroepidigitoxigenin-3β-O-glucopyranoside (5), along with two known compounds, uzarigenine (2) and β-anhydroepidigitoxigenin (3), were isolated from Calotropis procera (Asclepiadaceae). The structure elucidation was accomplished mainly by nuclear magnetic resonance (NMR) spectroscopic and mass spectrometric methods. To examine putative antimicrobial or cytotoxic activities, various bioassays were performed. Uzarigenine (2) demonstrated moderate cytotoxicity.
    Type: Article , PeerReviewed
    Format: text
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  • 3
    Publication Date: 2022-01-13
    Description: Borates are the third most important component of total alkalinity (AT) in the oxic waters. Their concentrations are a function of the dissociation constant of boric acid and total boron (TB) concentration. The latter is approximated from salinity (S) as boron behave conservatively in the seawater. The linear dependencies between TB and S developed for the open ocean contain no intercept suggesting that river water contains no boron. Based on the historical data and our own measurements we identified a TB vs. S relationship specific for the Baltic Sea: TB [μmol kg−1] = 10.838 ∗ S + 13.821. In the series of the sensitivity tests we analysed what effect can have this anomaly on the determination of borate alkalinity (AB) and on the calculations within the CO2 system performed with AT as an input variable. Due to the high pKa for boric acid the influence of TB anomaly on AB exists only for pH 〉 8. The highest deviation in AB appears at low salinities. When salinity increases the effect becomes smaller and at salinities 〉 14, due to lower slope in TB vs. S dependency in the Baltic than in the open ocean, the effect on AB turns to negative and decreases further with the S increase. These uncertainties in AB influence calculations of pCO2 (CO2 partial pressure) and pH, when CT (total CO2 concentration) and AT are used as input parameters (the combination used in biogeochemical models). For pCO2 the discrepancies in calculations are not very much dependent on the AT. The highest are observed for low salinities and pH of 8.2–8.4, however they do not exceed 10 μatm. This relatively low influence of TB anomaly on pCO2 calculations is a result of the high distance on the pH scale between high pCO2 conditions (low pH) and the highest AB anomaly (high pH). In case of pH calculations the highest influence of TB anomaly is observed for the low AT and low S waters. For three different AT considered in our study the highest pH errors (up to 0.05 pH unit) were observed for AT = 500 μmol kg−1, while the lowest (up to 0.01 pH unit) were observed for highly buffered waters (AT = 3000 μmol kg−1). Irrespective of the AT the highest errors were found for low CT simulating low pCO2 (and thus high pH) conditions. This is due to the high pKa for boric acid that shifts the effects of the TB anomaly to high pH values. Although the observed discrepancies in pH and pCO2 calculations due to TB anomaly manifest themselves only at the specific environmental conditions the use of experimentally obtained TB vs. S dependency will increase the accuracy of the CO2 system calculations for the Baltic Sea and likely for other brackish systems.
    Type: Article , PeerReviewed
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  • 4
    Publication Date: 2017-08-18
    Description: Two newly designed underway systems for the measurement of CO2 partial pressure (pCO2) in seawater and the atmosphere are described. Results of an intercomparison experiment carried out in the North Sea are presented. A remarkable agreement between the two simultaneously measured (pCO2) data sets was observed even though the spatial variability in surface pCO2 was high. The average difference of all l -min averages of the seawater pCO2 was as low as 0.15 μatm with a standard deviation of 1.2 μatm indicating that no systematic difference is present. A closer examination of the profiles shows that differences tend to be highest during maxima of the pCO2 gradient (up to 14 μatm/min). The time constants of both systems were estimated from laboratory experiments to 45 s, respectively, 75 s thus quantitatively underlining their capability of a fast response to pCO2 changes
    Type: Article , PeerReviewed
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  • 5
    Publication Date: 2023-03-14
    Keywords: Alkalinity, total; Carbon, total; Carbon dioxide, partial pressure; CT; DATE/TIME; DEPTH, water; Discretely sampled from water stream of Underway-Equilibrator-System; LATITUDE; LONGITUDE; OC16/11; OC16/11-track; Oceania; Oxygen; Oxygen saturation; pH; Salinity; Temperature, water; Underway cruise track measurements; Underway-Equilibrator-System
    Type: Dataset
    Format: text/tab-separated-values, 286 data points
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  • 6
    Publication Date: 2023-05-12
    Keywords: ANT-X/1a; Carbon dioxide in the Atlantic Ocean; CARINA; CT; DATE/TIME; DEPTH, water; Fugacity of carbon dioxide (air, 100% humidity); Fugacity of carbon dioxide in seawater; LATITUDE; LONGITUDE; NDIR-based seawater-air equilibration technique; Polarstern; PS20; PS20/1a-track; Salinity; Temperature, water; Thermosalinograph; TSG; Underway cruise track measurements; Volume fraction of carbon dioxide in dry air
    Type: Dataset
    Format: text/tab-separated-values, 2482 data points
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  • 7
    Publication Date: 2023-05-12
    Keywords: ARK-IX/1a; Carbon dioxide in the Atlantic Ocean; CARINA; CT; DATE/TIME; DEPTH, water; Fugacity of carbon dioxide (air, 100% humidity); Fugacity of carbon dioxide in seawater; LATITUDE; LONGITUDE; NDIR-based seawater-air equilibration technique; Polarstern; Pressure, atmospheric; PS24; PS24/1a-track; Salinity; Ship based meteorological sensor; Temperature, water; Thermosalinograph; TSG; Underway cruise track measurements; Volume fraction of carbon dioxide in dry air
    Type: Dataset
    Format: text/tab-separated-values, 5395 data points
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  • 8
    Publication Date: 2023-01-13
    Keywords: Carbon dioxide, partial pressure; CT; DATE/TIME; DEPTH, water; LATITUDE; LONGITUDE; OC16/11; OC16/11-track; Oceania; Salinity; Temperature, water; Underway cruise track measurements; Underway-Equilibrator-System
    Type: Dataset
    Format: text/tab-separated-values, 10134 data points
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  • 9
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    PANGAEA
    In:  Leibniz Institute for Baltic Sea Research, Warnemünde
    Publication Date: 2023-06-10
    Keywords: 06AQ19930228-track; ARK-IX/1a; CT; DATE/TIME; Depth, bathymetric, interpolated/gridded; DEPTH, water; extracted from the 2-Minute Gridded Global Relief Data (ETOPO2); extracted from the NCEP/NCAR 40-Year Reanalysis Project; extracted from the World Ocean Atlas 2005; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); LATITUDE; LONGITUDE; Polarstern; Pressure, atmospheric; Pressure, atmospheric, interpolated; PS24; Recomputed after SOCAT (Pfeil et al., 2013); Salinity; Salinity, interpolated; SOCAT; Surface Ocean CO2 Atlas Project; Temperature, water; Underway cruise track measurements
    Type: Dataset
    Format: text/tab-separated-values, 10622 data points
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  • 10
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    PANGAEA
    In:  Leibniz Institute for Baltic Sea Research, Warnemünde
    Publication Date: 2023-06-10
    Keywords: 06AQ19911114-track; ANT-X/1a; CT; DATE/TIME; Depth, bathymetric, interpolated/gridded; DEPTH, water; extracted from the 2-Minute Gridded Global Relief Data (ETOPO2); extracted from the NCEP/NCAR 40-Year Reanalysis Project; extracted from the World Ocean Atlas 2005; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); LATITUDE; LONGITUDE; Polarstern; Pressure, atmospheric, interpolated; PS20; Recomputed after SOCAT (Pfeil et al., 2013); Salinity; Salinity, interpolated; SOCAT; Surface Ocean CO2 Atlas Project; Temperature, water; Underway cruise track measurements
    Type: Dataset
    Format: text/tab-separated-values, 5738 data points
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