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  • 1
    Keywords: Plant physiology. ; Forestry. ; Environment. ; Paleontology . ; Plant Physiology. ; Forestry. ; Environmental Sciences. ; Paleontology.
    Description / Table of Contents: PART I INTRODUCTION: 1. Isotope Dendrochronology: Historical Perspective -- 2. Dendrochronology: Fundamentals and Innovations -- 3. Anatomical, developmental and physiological bases of tree-ring formation in relation to environmental factors -- PART II METHODS: 4. Sample collection and preparation for annual and intra-annual tree-ring isotope chronologies -- 5. Stable isotope signatures of wood, its constituents and methods of cellulose extraction -- 6. Tree-Ring Stable Isotope Measurements: The Role of Quality Assurance and Quality Control to Ensure High Quality Data -- 7. Newer Developments in Tree-Ring Stable Isotope Methods -- PART III: ISOTOPIC FRACTIONATIONS FROM SOURCE TO WOOD: 8. Isotopes – terminology, definitions and properties -- 9. Carbon isotope effects in relation to CO2 assimilation by tree canopies -- 10. Environmental, physiological and biochemical processes determining the oxygen isotope ratio of tree-ring cellulose -- 11. The stable hydrogen isotopic signature: From source water to tree rings -- 12. Nitrogen isotopes in tree rings – Challenges and prospects -- 13. Postphotosynthetic fractionation in leaves, phloem and stem -- PART IV PHYSIOLOGICAL INTERPRETATIONS: 14. Environmental fingerprints in tree-ring stable isotopes: Limits and strengths in mirroring environmental impacts -- 15. Post-photosynthetic carbon, oxygen and hydrogen isotope signal transfer to tree rings – how timing of cell formations and turnover of stored carbohydrates affect intra-annual isotope variations -- 16. Probing tree physiology using the dual-isotope approach -- 17. Intrinsic water-use efficiency derived from stable carbon isotopes of tree-rings -- PART V: ENVIRONMENTAL FACTORS IMPACTING THE ISOTOPIC FRACTIONATION: 18. Spatial and temporal variations in plant source water: O and H isotope ratiosfrom precipitation to xylem water -- 19. Climate signals in stable isotope tree ring records -- 20. Stable isotopes in tree rings of Boreal Forests -- 21. Stable isotopes in tree rings of Mediterranean Forests -- 22. Stable isotopes in tree rings of Tropical forests -- 23. Forest Management and Tree-Ring Isotopes -- 24. Impact of increasing CO2, and air pollutants (NOx, SO2, O3) on the stable isotope ratios in tree rings -- 25. Insect and pathogen influences on tree-ring stable isotopes -- 26. Process-based ecophysiological models of tree-ring stable isotopes.
    Abstract: This Open Access volume highlights how tree ring stable isotopes have been used to address a range of environmental issues from paleoclimatology to forest management, and anthropogenic impacts on forest growth. It will further evaluate weaknesses and strengths of isotope applications in tree rings. In contrast to older tree ring studies, which predominantly applied a pure statistical approach this book will focus on physiological mechanisms that influence isotopic signals and reflect environmental impacts. Focusing on connections between physiological responses and drivers of isotope variation will also clarify why environmental impacts are not linearly reflected in isotope ratios and tree ring widths. This volume will be of interest to any researcher and educator who uses tree rings (and other organic matter proxies) to reconstruct paleoclimate as well as to understand contemporary functional processes and anthropogenic influences on native ecosystems. The use of stable isotopes in biogeochemical studies has expanded greatly in recent years, making this volume a valuable resource to a growing and vibrant community of researchers.
    Type of Medium: Online Resource
    Pages: XXI, 773 p. 106 illus., 76 illus. in color. , online resource.
    Edition: 1st ed. 2022.
    ISBN: 9783030926984
    Series Statement: Tree Physiology ; 8
    DDC: 571.2
    Language: English
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  • 2
    Monograph available for loan
    Monograph available for loan
    Amsterdam : Elsevier [u.a.]
    Call number: M 08.0417 ; M 08.0417(2.Ex.)
    In: Terrestrial ecology series
    Description / Table of Contents: Contents: 1: Ecological isotope archives; 2: Plant-based isotope data a indicators of ecological change; 3: Animal-based isotope data as indicators of ecological change; 4: Isotope composition of trace gasses, sediments and biomarkers as recorders of change; 5: Humans, isotopes and ecological change; 6: New challenges and frontiers: biodiversity, ecological change and stable isotope networks.
    Type of Medium: Monograph available for loan
    Pages: xviii, 417 S. , graph. Darst., Kt. , 26cm
    Edition: 1st ed.
    ISBN: 9780123736277
    Series Statement: Terrestrial ecology series
    Location: Upper compact magazine
    Location: Upper compact magazine
    Branch Library: GFZ Library
    Branch Library: GFZ Library
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  • 3
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    PANGAEA
    In:  Supplement to: Schmid, Simone; Burkard, Reto; Frumau, K F A; Tobón, C; Bruijnzeel, L Adrian; Siegwolf, Rolf T E; Eugster, Werner (2011): Using eddy covariance and stable isotope mass balance techniques to estimate fog water contributions to a Costa Rican cloud forest during the dry season. Hydrological Processes, 25, 429-437, https://doi.org/10.1002/hyp.7739
    Publication Date: 2023-05-12
    Description: Fog deposition, precipitation, throughfall and stemflow were measured in a windward tropical montane cloud forest near Monteverde, Costa Rica, for a 65-day period during the dry season of 2003. Net fog deposition was measured directly using the eddy covariance (EC) method and it amounted to 1.2 ± 0.1 mm/day (mean ± standard error). Fog water deposition was 5–9% of incident rainfall for the entire period, which is at the low end of previously reported values. Stable isotope concentrations (d18O and d2H) were determined in a large number of samples of each water component. Mass balance-based estimates of fog deposition were 1.0 ± 0.3 and 5.0 ± 2.7 mm/day (mean ± SE) when d18O and d2H were used as tracer, respectively. Comparisons between direct fog deposition measurements and the results of the mass balance model using d18O as a tracer indicated that the latter might be a good tool to estimate fog deposition in the absence of direct measurement under many (but not all) conditions. At 506 mm, measured water inputs over the 65 days (fog plus rain) fell short by 46 mm compared to the canopy output of 552 mm (throughfall, stemflow and interception evaporation). This discrepancy is attributed to the underestimation of rainfall during conditions of high wind.
    Keywords: Conductivity; DATE/TIME; Date/time end; Duration; Electrode; FIESTA; Fog Interception for the Enhancement of Streamflows in Tropical Areas; Isotope ratio mass spectrometry; Monitoring station; MONS; Monte_Verde; Monte Verde, Costa Rica; pH; Rain gauge; Sample type; Throughfall; δ18O, water; δ Deuterium, water
    Type: Dataset
    Format: text/tab-separated-values, 3600 data points
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  • 4
    ISSN: 1520-6041
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1520-5827
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1520-5827
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of the American Chemical Society 112 (1990), S. 1105-1108 
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Bradford : Emerald
    Information, technology & people 13 (2000), S. 263-281 
    ISSN: 0959-3845
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Computer Science , Sociology
    Notes: Characterizations of users' experiences on the Web are beginning to appear. Recently released research suggests that Internet use may reduce psychological well-being, for instance by increasing loneliness and depression. Our current study implies that using the Internet may provoke enjoyable experiences through the flow state, which may in turn positively influence an individual's subjective well-being and improve a person's happiness, life satisfaction, and positive affect. By surveying 304 Web users through an open-ended questionnaire, this study captures a picture of Web users' flow experiences regarding their optimal situations on the Web. Results suggest that using the World Wide Web is an activity that facilitates flow, which generates an optimal, extremely enjoyable experience with total involvement and concentration. Symptoms and dimensions of flow states on the Web are reported directly from subjects' responses, such as merging of action and awareness, a loss of self-consciousness, the sense of time distortion, enjoyment, and telepresence.
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1365-2486
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Energy, Environment Protection, Nuclear Power Engineering , Geography
    Notes: We investigated the response of conifer trees in northern Eurasia to climate change and increasing CO2 over the last century by measuring the carbon isotope ratio in tree rings. Samples from Larix, Pinus and Picea trees growing at 26 high-latitude sites (59–71°N) from Norway to Eastern Siberia were analysed. When comparing the periods 1861–1890 and 1961–1990, the isotope discrimination and the ratio of the intercellular to ambient CO2 concentration (ci/ca) remained constant for trees growing in mild oceanic climate and under extremely cold and dry continental conditions. This shows a strong coordination of gas-exchange processes, consisting in a biochemical acclimation and a reduction of the stomatal conductance. The correlation for ci/ca between the two investigated periods was particularly strong for Larix (r2=0.90) and Pinus (r2=0.94), but less pronounced for Picea (r2=0.47). Constant ci/ca under increasing CO2 in the atmosphere resulted in improved intrinsic water-use efficiency (Wi), the amount of water loss at the leaf level per unit carbon gain. We found that 125 out of 126 trees showed increasing Wi from 1861 to 1890 to 1961 to 1990, with an average improvement of 19.2±0.9% (mean±SE). The adaptation in gas exchange and reduced transpiration of trees growing in this region must have had a strong impact on the water and energy budget, resulting in a drier and warmer surface air layer today than would exist without this vegetation–climate feedback.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of the American Water Resources Association 11 (1975), S. 0 
    ISSN: 1752-1688
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying , Geography
    Notes: : Land development projects that are presumed to have regional impact according to the Florida Land and Water Management Act of 1972 are forced to minimize adverse environmental impact through a detailed procedure called Application for Development Approval (ADA). In Southeast Florida, as part of this review process, the water-supply and flooding conflicts must be resolved with the regional water management agency, Central and South Florida Flood Control District (FCD). This paper discusses the efforts to resolve these two conflicts for a large proposed residential development in Broward County, Florida. The project, as envisioned by Leadership Housing, Inc., places 25,000 dwelling units on the 3,960-acre site. The project is located in a flood prone area of the Hillsboro Canal Basin and is at the northwest edge of the Biscayne Aquifer. Significant land modification is required to flood-proof the project. The water-supply conflict was resolved only when the FCD was assured that the ultimate water demand for the project was balanced by the natural recharge to the site. Significant water-resources studies were required to produce these conflict resolutions.
    Type of Medium: Electronic Resource
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