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  • 1
    Online-Ressource
    Online-Ressource
    Cham :Springer International Publishing AG,
    Schlagwort(e): Sustainable urban development. ; City planning. ; Electronic books.
    Materialart: Online-Ressource
    Seiten: 1 online resource (402 pages)
    Ausgabe: 1st ed.
    ISBN: 9783319593241
    Serie: Future City Series ; v.10
    Sprache: Englisch
    Anmerkung: Intro -- Foreword -- Contents -- Contributors -- Introduction: Urban Transformations - Sustainable Urban Development Through Resource Efficiency, Quality of Life and Resilience -- Motivation -- Sustainability Through "Urban Transformations" -- Our Approach and Understanding of Urban Transformations -- Resource Efficiency -- Quality of Life -- Resilience -- Synopsis -- Purpose of the Volume -- References -- Part I: Conceptual Approaches of Sustainable Urban Transformations -- Outline -- Exploring the Extent, Selected Topics and Governance Modes of Urban Sustainability Transformations -- 1 Introduction -- 2 Extent of Urban Transformations: Transition Management and the Great Transformation -- 2.1 Transition Management -- 2.2 The Great Transformation -- 3 Topics of Urban Transformations -- 3.1 The Post-fossil City -- 3.2 The Resilient City -- 4 Goverance of Urban Transformations -- 4.1 Transformative Urban Governance - Illustrated by the WBGU Approach -- 4.2 Growth Machines and Urban Regimes - Illustrated by the Smart City Concept -- 5 Conclusion -- References -- Linking Transition Theories with Theories of Institutions - Implications for Sustainable Urban Infrastructures Between Flexibility and Stability -- 1 Introduction -- 2 Theoretical Concepts for the Transformation of Urban Infrastructures -- 2.1 Transforming Socio-Technical Systems -- 2.2 On the Steering of Socio-Technical Transformations -- 3 Socio-Technical Transformations as a Phenomenon of Institutional Change -- 3.1 The Importance of Institutions in the Urban Transformation Process -- 3.2 The Theory of Institutional Change -- 3.2.1 Mechanisms of Institutional Change -- 3.2.2 The Concept of Adaptive Efficiency -- 4 Transformation of Urban Infrastructure Systems: The Example of Urban Water Management. , 4.1 The Need for a Transformation of Urban Water Infrastructure Systems Towards Greater Sustainability -- 4.2 The Institutional Inertia in the Urban Water Sector as a Challenge -- 4.3 Starting Points for Steering Transformation in the Urban Water Sector -- 5 Conclusions -- References -- Efficiency-Equity-Trade-Off as a Challenge for Shaping Urban Transformations -- 1 Introduction -- 2 The Efficiency-Equity Trade-Offs - An Overview -- 2.1 Economics and the Idea of Efficiency and Trade-Offs -- 2.2 Social Sciences' Concepts of Environmental Justice -- 3 Efficiency and Equity in Urban Transformations: Two Empirical Examples -- 3.1 Flood Risk Management in England and the Urban-Rural Divide -- 3.2 Sustainable Infrastructure: Pricing Water Services and the Efficiency-Equity Trade-Off -- 4 Conclusion -- References -- On the Connection Between Urban Sustainability Transformations and Multiple Societal Crises -- 1 Introduction -- 2 Theoretical Perspectives: Connections Between Transformation and Crises -- 3 Connection Between Urban Sustainability Transformation and Multiple Crises, Based on Empirical Evidence from Various Arenas of Urban Development -- 3.1 Introduction to the Urban Context and Examples -- 3.2 Examples of Crises' Impacts on Urban Sustainable Development -- 3.2.1 Urban Water Infrastructure Crisis -- 3.2.2 Financial Crisis and Urban Austerity: Trade-Offs Between Environmental, Social, and Financial Sustainability -- 3.3 Cross-Case Assessment -- 4 Conclusion -- References -- How to Measure Progress Towards an Inclusive, Safe, Resilient and Sustainable City? Reflections on Applying the Indicators of Sustainable Development Goal 11 in Germany and India -- 1 Introduction -- 2 Aims and Approach -- 3 The Urban Dimension of the Sustainable Development Goals -- 4 Discussion -- 5 Outlook -- References -- Part II: Urban Resources and Governance -- Outline. , Sustainable Transformation of Urban Water Infrastructure in Amman, Jordan - Meeting Residential Water Demand in the Face of Deficient Public Supply and Alternative Private Water Markets -- 1 Introduction: Transforming Urban Water Infrastructure -- 2 Institutional Settings in Amman -- 3 Governance Challenges for Residential Water Supply -- 3.1 Sustainability Problems -- 3.2 Sustainable Urban Water Supply - The Economic Perspective -- 3.3 The Transformation Conundrum -- 3.3.1 Four Obstacles to Sustainably Transforming Amman's Water Supply Sector -- 3.3.2 Interdependencies Between the Four Obstacles -- 4 Governance Implications: Water Demand Policy Is Key -- 4.1 Overview: Governance Options for Sustainable Water Policy -- 4.2 Water Pricing -- 4.2.1 Effectiveness of Pricing -- 4.2.2 Pricing and Equity Considerations -- 4.2.3 Acceptance: The Willingness to Pay for Higher Quality -- 4.2.4 Political Feasibility -- 4.3 Fighting Illegal Abstractions -- 4.4 Funding Infrastructure Improvements: Curing Revenue Deficits -- 4.5 Implementation Strategy -- 5 Conclusion -- References -- The TEEB Approach Towards Sustainable Urban Transformations: Demonstrating and Capturing Ecosystem Service Values -- 1 Introduction -- 2 Urban Green and Its Services for Human Health and Well-Being -- 3 Demonstrating the Value of Urban Green -- 3.1 Which Values Are Covered by the Economic Approach? -- 3.2 Methodological Approaches to Demonstrating Values of Urban Green -- 4 Capturing Urban Green in Decision-Making -- 4.1 Delivering Information -- 4.2 Enhancing Cooperation and Creating New Alliances -- 4.3 Strengthening Ecosystem Service Perspectives in Urban and Land Use Planning -- 4.4 Providing Economic Incentives -- 5 Concluding Remarks -- References -- Green Infrastructure for Increased Resource Efficiency in Urban Water Management -- 1 Introduction -- 2 Graywater. , 3 Rainwater and Surface Runoff -- 4 Wastewater -- 5 Outlook -- References -- Sustainable Urban Water Governance - Main Aims, Challenges and Institutional Approaches in Germany and Beyond -- 1 Introduction -- 2 Seminal Challenges for Urban Water Infrastructure Development -- 2.1 Widespread Reinvestment Gaps and Obsolescence of Existing Waste Water Structures -- 2.2 Demographic Change (Shrinkage/Growth/Aging) -- 2.3 New and Stricter Environmental Standards -- 2.4 Increasing Risk of Urban Flash Floods as a Result of Land-Use Change and Climate Change -- 2.5 Increasingly Dry Summer Seasons and Drought Periods as a Result of Climate Change -- 2.6 Strong Call for More Energy and Resource Efficiency -- 2.7 Increasing and Highly Diverging Water Prices -- 2.8 The Liberalization Question -- 3 Towards Sustainability: Essential Aims and Requirements of Sustainable Water Infrastructure Development -- 4 Institutional Foundations for Sustainable Urban Water Infrastructure -- 4.1 State-Sponsored vs. Competitive Fulfilment of Infrastructure Tasks -- 4.2 The Regulatory Framework -- 4.3 Incentives -- 4.4 Organization -- 4.5 Planning -- 5 Conclusion -- References -- Transitioning the Heat Supply System - Challenges with Special Focus on Bioenergy in the Context of Urban Areas -- 1 Background and Challenges -- 2 Heat Supply in Urban Areas -- 3 Biogenic Urban Sources of Heat Supply -- 4 Criteria for Promising Supply Systems in Urban Areas for Heat from Biomass -- 5 Future Technologies for Heat from Biomass -- 5.1 Heating Technologies Based on Solid Biomass -- 5.2 Solid Biomass for Production Purposes -- 5.3 Heating Technologies Based on Gaseous Biofuels -- 6 Change Management - Integrating People and Processes -- 7 The Path Ahead for Biogenic Urban Heat Supply -- References. , From Shrinkage to Regrowth: The Nexus Between Urban Dynamics, Land Use Change and Ecosystem Service Provision -- 1 Introduction -- 2 Urban Shrinkage and Regrowth -- 2.1 The Nexus Between Urban Dynamics and Land Use Changes and the Provision of UES -- 2.2 Examples for the Interplay of Urban Dynamics, Land Use Changes, and the Provision of UES -- 2.2.1 Shrinkage -- 2.2.2 Regrowth -- 3 Which Challenges Can Be Identified from the Interplay of Urban Dynamics, Land Use Change, and UES Provision? -- 4 How Do Actors, Policies, and Governance Respond to These Challenges? -- 5 Conclusions -- References -- Potentials of Urban Brownfields for Improving the Quality of Urban Space -- 1 Urban Brownfields as Land Resources -- 2 The Potential Re-Use of Urban Brownfields -- 2.1 Revitalisation -- 2.2 Renaturation -- 2.3 Multifunctional Land Use Options -- 3 Potential Spaces for Regrowing Cities - The Case of Leipzig, Germany -- 4 Leeway in Decision-Making -- References -- Part III: Quality of Life and Ecosystem Services -- Outline -- Local Residential Quality from an Interdisciplinary Perspective: Combining Individual Perception and Micrometeorological Factors -- 1 Introduction -- 2 Conceptual Framework for Local Residential Quality (LRQ) -- 2.1 Social Science Perspective to Grasp the Individual Perception -- 2.2 Micrometeorological Factors Characterizing Local Exposure -- 2.3 Influences of Urban Landscape Features on Environmental Stressors -- 3 Methodological Design -- 3.1 The Case Study: Leipzig and Its Large Housing Estate Grünau -- 3.2 The Methods Used: Household Survey, Air Quality Measurements and Micrometeorological Simulations -- 4 Empirical Findings and Their Synopsis -- 4.1 Survey Findings -- 4.1.1 Estate Scale: Perceptions of Local Residential Quality -- 4.1.2 District Scale: Perceptions of Local Residential Quality -- 4.2 ENVI-met Model Findings. , 4.3 Synopsis of the Results and Discussion.
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  • 2
    Online-Ressource
    Online-Ressource
    Wiesbaden : Springer Fachmedien Wiesbaden GmbH
    Schlagwort(e): Electronic books
    Beschreibung / Inhaltsverzeichnis: Intro -- Was Sie in diesem essential finden können -- Vorwort -- Inhaltsverzeichnis -- Abkürzungsverzeichnis -- 1 Einleitung -- 2 Die Agenda 2030 und die Sustainable Development Goals -- 2.1 Entstehungsgeschichte -- 2.2 Ziele, Unterziele und Indikatoren -- 2.3 Umsetzungsinstrumente der Agenda 2030 -- 2.4 Widersprüche und Kritik -- 2.5 Stand der Umsetzung -- 3 Nachhaltige Stadtentwicklung und die Agenda 2030 -- 3.1 Die Lokalisierung der SDGs -- 3.2 Implementierung der SDGs in Städten -- 3.3 Monitoring und SDG-Indikatorensysteme -- 3.4 Internationale Beispiele zur Umsetzung der SDGs -- 3.5 Deutsche Städte und die SDGs -- 4 Perspektive für Forschung und Praxis -- 4.1 Transdisziplinäre Ansätze: Zusammenarbeit von Wissenschaft, Stadtverwaltungen, Zivilgesellschaft und Wirtschaft -- 4.2 Bedarf für transformative Forschung -- 5 Fazit: Das transformative Potenzial der SDGs -- Was Sie aus diesem essential mitnehmen können -- Literatur.
    Materialart: Online-Ressource
    Seiten: 1 online resource (60 pages)
    ISBN: 9783658339272
    Serie: Essentials Ser.
    Sprache: Deutsch
    Anmerkung: Description based on publisher supplied metadata and other sources
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 3
    Schlagwort(e): Forschungsbericht ; Soziale Software
    Materialart: Online-Ressource
    Seiten: Online-Ressource (PDF-Datei: 24 S., 1,60 MB) , Ill., graph. Darst.
    Ausgabe: Stand: April 2010
    Sprache: Deutsch
    Anmerkung: Auch als gedr. Ausg. erschienen. - Unterschiede zwischen dem gedruckten Dokument und der elektronischen Ressource können nicht ausgeschlossen werden , Systemvoraussetzungen: Acrobat reader.
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  • 4
    Publikationsdatum: 2023-04-05
    Beschreibung: Contrasting models predict two different climate change scenarios for the Southern Ocean (SO), forecasting either less or stronger vertical mixing of the water column. To investigate the responses of SO phytoplankton to these future conditions, we sampled a natural diatom dominated (63%) community from today's relatively moderately mixed Drake Passage waters with both low availabilities of iron (Fe) and light. The phytoplankton community was then incubated at these ambient open ocean conditions (low Fe and low light, moderate mixing treatment), representing a control treatment. In addition, the phytoplankton was grown under two future mixing scenarios based on current climate model predictions. Mixing was simulated by changes in light and Fe availabilities. The two future scenarios consisted of a low mixing scenario (low Fe and higher light, low mixing treatment) and a strong mixing scenario (high Fe and low light, strong mixing treatment). In addition, communities of each mixing scenario were exposed to ambient and low pH, the latter simulating ocean acidification (OA). The effects of the scenarios on particulate organic carbon (POC) production, trace metal to carbon ratios, photophysiology and the relative numerical contribution of diatoms and nanoflagellates were assessed. During the first growth phase, at ambient pH both future mixing scenarios promoted the numerical abundance of diatoms (~75%) relative to nanoflagellates. This positive effect, however, vanished in response to OA in the communities of both future mixing scenarios (~65%), with different effects for their productivity. At the end of the experiment, diatoms remained numerically the most abundant phytoplankton group across all treatments (~80%). In addition, POC production was increased in the two future mixing scenarios under OA. Overall, this study suggests a continued numerical dominance of diatoms as well as higher carbon fixation in response to both future mixing scenarios under OA, irrespective of different changes in light and Fe availability.
    Schlagwort(e): Carbon, organic, particulate, net production; Carbon, organic, particulate, net production, standard deviation; CO2; compiled data; diatoms; DrakePassage; Experiment/study setup; Experimental treatment; Growth phase; iron; Iron/Carbon ratio; Iron/Carbon ratio, standard deviation; Light; mixing; Multiple stressors; Ocean acidification; pH; Photochemical quantum yield; Photochemical quantum yield, standard deviation; Pigments, light harvesting/light protective ratio; Pigments, light harvesting/light protective ratio, standard deviation; Scenario; Southern Ocean
    Materialart: Dataset
    Format: text/tab-separated-values, 168 data points
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 5
    Publikationsdatum: 2023-04-05
    Beschreibung: Contrasting models predict two different climate change scenarios for the Southern Ocean (SO), forecasting either less or stronger vertical mixing of the water column. To investigate the responses of SO phytoplankton to these future conditions, we sampled a natural diatom dominated (63%) community from today's relatively moderately mixed Drake Passage waters with both low availabilities of iron (Fe) and light. The phytoplankton community was then incubated at these ambient open ocean conditions (low Fe and low light, moderate mixing treatment), representing a control treatment. In addition, the phytoplankton was grown under two future mixing scenarios based on current climate model predictions. Mixing was simulated by changes in light and Fe availabilities. The two future scenarios consisted of a low mixing scenario (low Fe and higher light, low mixing treatment) and a strong mixing scenario (high Fe and low light, strong mixing treatment). In addition, communities of each mixing scenario were exposed to ambient and low pH, the latter simulating ocean acidification (OA). The effects of the scenarios on particulate organic carbon (POC) production, trace metal to carbon ratios, photophysiology and the relative numerical contribution of diatoms and nanoflagellates were assessed. During the first growth phase, at ambient pH both future mixing scenarios promoted the numerical abundance of diatoms (~75%) relative to nanoflagellates. This positive effect, however, vanished in response to OA in the communities of both future mixing scenarios (~65%), with different effects for their productivity. At the end of the experiment, diatoms remained numerically the most abundant phytoplankton group across all treatments (~80%). In addition, POC production was increased in the two future mixing scenarios under OA. Overall, this study suggests a continued numerical dominance of diatoms as well as higher carbon fixation in response to both future mixing scenarios under OA, irrespective of different changes in light and Fe availability.
    Schlagwort(e): CO2; compiled data; diatoms; DrakePassage; Experimental treatment; Incubation duration; iron; Light; mixing; Multiple stressors; Nitrate; Nitrate, standard deviation; Ocean acidification; pH; Silicate; Silicate, standard deviation; Southern Ocean
    Materialart: Dataset
    Format: text/tab-separated-values, 343 data points
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  • 6
    Publikationsdatum: 2024-02-07
    Beschreibung: The data set was acquired during the PHYCOB cruise in the frame of the Eurofleets+ programme (https://www.eurofleets.eu/2021/10/22/phycob-an-international-oceanographic-expedition-into-the-western-black-sea-coordinated-by-the-alfred-wegner-institut-helmholtz-zentrum-fur-polar-und-meeresforschung-awi/) within the Regional call in the territorrial waters of Romania and Bulgaria in the Western Baltic Sea from 11th to 17th September 2021. The aim of the cruise was to assess the occurrence of potentially harmfal algae and their associated phycotoxins in the Black Sea and the accompanying environmental parameters. Sampling was performed by CTD casts and Rosette water sampling in addition to vertical phytoplankton net hauls from 30 m depth to surface. The determined parameters include the following: Quantitative phytoplankton cell counts in water samples, qulitative determination of toxigenic species next generation sequencing data in plankton net concentrates, monoclonanal cultures established from water sample isolates, phycotoxins in plankton net concentrates, inorganic nitruinets (nitrate/nitrite, phosphate, silicate) , vitamin B12, particulate organic carbon, particulate organic nitrogen, flowcytometry data, and CTD data (temperature, salinity, chlorophyll-a, oxygen, turbidity, radiance).
    Schlagwort(e): chlorophyll-a; CTD profile; HAB species; isolated strains; net tows; NOC; Nutrient data; phycotoxins; POC; vitamin B12
    Materialart: Dataset
    Format: application/zip, 8 datasets
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  • 7
    Publikationsdatum: 2024-02-07
    Beschreibung: Samples for biological and chemical parameters were collected at the surface (3m), pyrocline, and the deep chlorophyll a maximum using the CTD (Conductivity, Temperature, and Depth) rosette outfitted with Niskin bottles. Nitrite and nitrate (NO3-+NO2-) referred to as Nox, ortho-phosphate as phosphorus (o-PO43-) and silica (SiO2) were analysed using a QuAAtro39 Continuous Segmented Flow Analyzer. Size fractionated chlorophyll a was collected by filtering water through 0.2 µm and 2 µm polycarbonate filters and frozen on board to be analysed later in the lab using standard fluorometric techniques. Duplicate particulate organic carbon and nitrogen (POC and PON) samples were collected on pre- combusted GF/F glass fiber filters, and stored frozen at -20°C until subsequent analysis on anelemental analyser in the lab. Whole water samples were preserved with 10% buffered formalin (1 % v/v final) and analyzed by flow cytometry to assess picoplankton densities. Abundance of heterotrophic bacteria (stained with SYBR Green I), phycoerythrin-containing picocyanobacteria, and photosynthetic picoeukaryotes were quantified using a Beckson Dickson Accuri C6 Flowcytometer using fluorescence patterns and particle size from side angle light scatter.
    Schlagwort(e): [RVSS]; Carbon, organic, particulate; Carbon/Nitrogen, molar ratio; chlorophyll-a; Chlorophyll a, size fraction 〈 2 µm; Chlorophyll a, size fraction 〉 2 µm; Chlorophyll a, total; CTD, Seabird; CTD profile; CTD-R; Cyanobacteria; DEPTH, water; Event label; HAB species; Heterotrophic prokaryotes; isolated strains; MULT; Multiple investigations; net tows; Nitrate and Nitrite; Nitrogen, organic, particulate; NOC; Nutrient data; Oxygen, dissolved; Phosphate; PHYCOB; PHYCOB_1; PHYCOB_10; PHYCOB_11; PHYCOB_12; PHYCOB_13; PHYCOB_14; PHYCOB_15; PHYCOB_16; PHYCOB_17; PHYCOB_18; PHYCOB_19; PHYCOB_2; PHYCOB_20; PHYCOB_21; PHYCOB_22; PHYCOB_23; PHYCOB_3; PHYCOB_4; PHYCOB_5; PHYCOB_6; PHYCOB_7; PHYCOB_8; PHYCOB_9; phycotoxins; Picoeukaryotes; POC; Rosette Vertical Sampling System; Salinity; Silicate; Temperature, water; Tübitak Marmara; vitamin B12; Vitamin B12
    Materialart: Dataset
    Format: text/tab-separated-values, 1129 data points
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  • 8
    facet.materialart.
    Unbekannt
    PANGAEA
    In:  Supplement to: Hattenrath-Lehmann, Theresa K; Smith, Juliette L; Wallace, Ryan B; Merlo, Lucas R; Koch, Florian; Mittelsdorf, Heidi; Goleski, Jennifer A; Anderson, Donald M; Gobler, Christopher J (2015): The effects of elevated CO2 on the growth and toxicity of field populations and cultures of the saxitoxin-producing dinoflagellate, Alexandrium fundyense. Limnology and Oceanography, 60(1), 198-214, https://doi.org/10.1002/lno.10012
    Publikationsdatum: 2024-03-15
    Beschreibung: The effects of coastal acidification on the growth and toxicity of the saxitoxin-producing dinoflagellate Alexandrium fundyense were examined in culture and ecosystem studies. In culture experiments, Alexandrium strains isolated from Northport Bay, New York, and the Bay of Fundy, Canada, grew significantly faster (16-190%; p 〈 0.05) when exposed to elevated levels of PCO2 ( 90-190 Pa=900-1900 µatm) compared to lower levels ( 40 Pa=400 µatm). Exposure to higher levels of PCO2 also resulted in significant increases (71-81%) in total cellular toxicity (fg saxitoxin equivalents/cell) in the Northport Bay strain, while no changes in toxicity were detected in the Bay of Fundy strain. The positive relationship between PCO2 enrichment and elevated growth was reproducible in natural populations from New York waters. Alexandrium densities were significantly and consistently enhanced when natural populations were incubated at 150 Pa PCO2 compared to 39 Pa. During natural Alexandrium blooms in Northport Bay, PCO2 concentrations increased over the course of a bloom to more than 170 Pa and were highest in regions with the greatest Alexandrium abundances, suggesting Alexandrium may further exacerbate acidification and/or be especially adapted to these acidi-fied conditions. The co-occurrence of Alexandrium blooms and elevated PCO2 represents a previously unrecognized, compounding environmental threat to coastal ecosystems. The ability of elevated PCO2 to enhance the growth and toxicity of Alexandrium indicates that acidification promoted by eutrophication or climate change can intensify these, and perhaps other, harmful algal blooms.
    Schlagwort(e): Alexandrium fundyense; Alkalinity, total; Alkalinity, total, standard deviation; Aragonite saturation state; Bicarbonate ion; Bottles or small containers/Aquaria (〈20 L); Calcite saturation state; Calculated using CO2SYS; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard deviation; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Cell density; Chromista; Coulometric titration; Date; Event label; EXP; Experiment; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Growth/Morphology; Growth rate; Immunology/Self-protection; Incubation duration; Infrared spectrometric; Laboratory experiment; Laboratory strains; Myzozoa; North Atlantic; Northport_Harbor; 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); Pelagos; pH; pH, standard deviation; Phosphate; Phytoplankton; Potentiometric; Salinity; Silicate; Single species; Species; Strain; Temperature, water; Toxicity, cellular; Treatment
    Materialart: Dataset
    Format: text/tab-separated-values, 2149 data points
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 9
    Publikationsdatum: 2024-02-28
    Beschreibung: The dataset shows the orginal data based on which grazing rates of micro- and nanozooplankton and the growth rates of their prey, in austral autumn (April) close to the Antarctic Peninsula in the SO, were calculated in Böckmann et al. (2024). The data was measured by dilution experiments. Besides the, in such experiments classically investigated chlorophyll a, particulate organic carbon, particulate organic nitrogen, abundances of picoplankton and nanoplankton as well as bacterial abundances were measured at three stations in the Bransfield Strait, Drake Passage and Scotia Sea. Samples were taken during PS112 from a depth of 25 meters, using a polyethylene line connected to an ALMATEC membrane pump, by careful (laminar flow, 3-6 liters per minute, bubble free bottle filling) and trace metal clean techniques, successfully used since 2014. The data was collected to investigate the importance that nano- and microzooplankton grazers have for the carbon cycle in the Southern Ocean.
    Schlagwort(e): Ammonium; ANT-XXXIII/3; Bacteria, high DNA; Bacteria, low DNA; Carbon, organic, particulate; Carbon, organic, particulate fractionated; Chlorophyll a; Continuous flow autoanalyzer, Alliance Instruments, Evolution III; Date/time end, experiment; Date/time start, experiment; Diatoms; dilution experiment; Dinoflagellates; Drake Passage; Elemental analyzer, HEKAtech, Euro Vector CHNS-O; Event label; Experimental treatment; Flow cytometer, BD Biosciences, BD Accuri C6; grazing rates; growth rates; In situ pump; Inverted light microscopy, Zeiss, Axio Observer D1; ISP; Laboratory experiment; Laboratory fluorometer, Turner, Trilogy; microzooplankton; Nanoeukaryotes; Nanoflagellates; nanozooplankton; Nitrate; Nitrite; Nitrogen, organic, particulate; Nitrogen, organic, particulate fractionated; Phosphate; Picoeukaryotes, fractionated; Polarstern; Population Shift and Ecosystem Response – Krill vs. Salps; POSER; PS112; PS112_106-1; PS112_26-1; PS112_61-3; Replicate; Sample code/label; Scotia Sea; Silicate; Southern Ocean; Type of study; WAP
    Materialart: Dataset
    Format: text/tab-separated-values, 953 data points
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 10
    Publikationsdatum: 2024-02-15
    Beschreibung: Dataset 1 shows the dissolved iron (dFe) values of an iron release experiment performed in the Southern Ocean at the tip of the Western Antarctic Peninsula. Krill and salp fecal pellets (FP) were incubated in filtered seawater (FSW) and seawater with phytoplankton (SWP). After 48 hours of incubation the dFe concentrations were measured. Numbers marked in red have been recognized as outliers (due to contamination or analytic error) and have been excluded from statistical analysis. Dataset 2 shows the uptake of iron into Southern Ocean phytoplankton cells from the pre-incubated water. The uptake was measured using the radiotracer 55Fe into two size classes of plankton (0.2-2µm and 〉2µm). Total dFe uptake is the sum of the two size classes. Lines marked in orange have been excluded from statistical analysis because respective dissolved iron concentrations were not reliable. The data for both datasets was collected between 04/11/2018 and 04/14/2018 (campaign PS112) at the Western Antarctic Peninsula (60° 44.455 S 54° 30.477 W) from a depth of 25 m. The data was collected in order to compare the bioavailability of iron from salp and krill FP to a Southern Ocean plankton community. All sampling steps were performed in trace metal clean ways.
    Schlagwort(e): fecal pellet; iron release; iron uptake; krill; Salp; Southern Ocean
    Materialart: Dataset
    Format: application/zip, 2 datasets
    Standort Signatur Einschränkungen Verfügbarkeit
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