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  • 1
    Online Resource
    Online Resource
    Cham :Springer International Publishing AG,
    Keywords: Algal blooms. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (460 pages)
    Edition: 1st ed.
    ISBN: 9783319700694
    Series Statement: Ecological Studies ; v.232
    DDC: 363.738
    Language: English
    Note: Intro -- In Memoriam: Otto Ludwig Lange (1927-2017) -- Contents -- List of Abbreviations -- Part I: Introduction to Harmful Algal Blooms and the GEOHAB Programme -- Chapter 1: Introduction to the Global Ecology and Oceanography of Harmful Algal Blooms (GEOHAB) Synthesis -- References -- Chapter 2: Harmful Algal Blooms and the Importance of Understanding Their Ecology and Oceanography -- 2.1 Introduction -- 2.2 What Are Harmful Algal Blooms? -- 2.3 How Are HABs Harmful? -- 2.4 Where Do HABs Occur? -- 2.5 Why Are HABs Expanding? -- 2.6 Why the Need for Advancing Knowledge of HAB Ecology and Oceanography? -- 2.7 Conclusions and the Role of GEOHAB -- References -- Chapter 3: Establishment, Goals, and Legacy of the Global Ecology and Oceanography of Harmful Algal Blooms (GEOHAB) Programme -- 3.1 Introduction -- 3.2 History of GEOHAB -- 3.3 HABs in Upwelling Systems -- 3.4 HABs in Eutrophic Systems -- 3.5 HABs in Stratified Systems -- 3.6 HABs in Fjords and Coastal Embayments -- 3.7 HABs in Benthic Systems -- 3.8 GEOHAB Targeted, Regional, and National Research -- 3.9 Cross-Cutting and Framework Activities -- 3.10 GEOHAB Legacies -- References -- Part II: Global Changes and Harmful Algal Blooms -- Chapter 4: Changing Land-, Sea-, and Airscapes: Sources of Nutrient Pollution Affecting Habitat Suitability for Harmful Algae -- 4.1 Introduction -- 4.2 Land-Based Nutrient Pollution -- 4.3 Changing Seascapes -- 4.4 Coastal Typology and Anthropogenic Changes in Water Flow: Nutrient Retention Effects -- 4.5 Changing Airscapes -- 4.6 Eutrophication Potential and Global HAB Distribution -- 4.7 Future Projections: Millennium Ecosystem Assessment Scenarios -- 4.8 Future Projections: Global Ecosystem Modelling Approaches -- 4.9 Conclusions -- References -- Chapter 5: Harmful Algal Blooms in a Changing Ocean -- 5.1 Introduction. , 5.2 Direct Effects of Temperature on HABs -- 5.3 Direct Effects of Stratification on HABs -- 5.4 Altered Light Field Effects on HABs -- 5.5 Effects of Ocean Acidification on HABs -- 5.6 Effects of Nutrients on HABs -- 5.7 Grazer Effects on HABs -- 5.8 General Strategies to Accelerate Understanding of Climate Change Impacts on HABs -- References -- Part III: Adaptive Strategies and Harmful Algal Blooms -- Chapter 6: Nutrients and Harmful Algal Blooms: Dynamic Kinetics and Flexible Nutrition -- 6.1 Introduction -- 6.2 Limiting Nutrients -- 6.3 Optimal Nutrients -- 6.4 Dynamic Responses -- 6.5 Stoichiometry and Balancing Excess Nutrients -- 6.6 Mixotrophy -- 6.7 Conclusions -- References -- Chapter 7: Mixotrophy in Harmful Algal Blooms: By Whom, on Whom, When, Why, and What Next -- 7.1 Introduction -- 7.2 Mixotrophy Across the Spectrum of Nutrient Supply -- 7.3 Mixotrophs and Cellular Nutrient Stoichiometry -- 7.4 Mixotrophs and the Food Web -- 7.5 Inclusion of Mixotrophy in State-of-the-Art Ecosystem Modelling: The Rationale -- 7.6 Including Mixotrophy in State-of-the-Art Ecosystem Modelling: An Approach -- 7.7 Conclusions -- References -- Chapter 8: The Role of Life Cycle Characteristics in Harmful Algal Bloom Dynamics -- 8.1 Introduction -- 8.2 Dinoflagellates: Alexandrium fundyense and Pyrodinium bahamense -- 8.2.1 Life Cycle of Cyst-Forming Dinoflagellates -- 8.2.2 Bloom Dynamics -- 8.2.2.1 Major Study Areas -- 8.2.2.2 Cyst Distributions and Initiation of Planktonic Blooms -- 8.2.2.3 Bloom Development and Transport -- 8.2.2.4 Sexual Induction and Cyst Formation -- 8.3 Diatoms: Pseudo-nitzschia spp. -- 8.3.1 Life Cycle -- 8.3.2 Bloom Dynamics -- 8.3.3 Modelling of Life Cycle Transitions -- 8.4 Cyanobacteria: Nodularia spumigena -- 8.4.1 Life Cycle -- 8.4.2 Bloom Dynamics -- 8.4.3 Dispersal and Future Distribution -- 8.5 Synthesis and Recommendations. , References -- Part IV: Harmful Algal Blooms in Specific Habitats and Biomes -- Chapter 9: Key Questions and Recent Research Advances on Harmful Algal Blooms in Stratified Systems -- 9.1 Introduction -- 9.2 Key Questions 1: What Are the Turbulence Length Scales Relevant to Harmful Phytoplankton and the Formation of Thin Layers?... -- 9.3 Key Questions 2: What Are the Main Processes Controlling the Population Evolution of a Given Species, and How Does Their R... -- 9.3.1 Bloom Initiation -- 9.3.2 Bloom Maintenance -- 9.3.3 Bloom Decline and TL Erosion -- 9.4 Key Questions 3: How Can We Quantify Modifications in Turbulence by Phytoplankton Through Changes in the Viscosity of Its ... -- 9.5 Key Questions 4: What Nutritional Opportunities Do Thin Layers Provide to Phytoplankton, Especially to the Species Selecte... -- 9.6 Key Question 5: Are Allelopathy and ``Chemical Warfare´´ at Work In Situ Within TLs? -- 9.7 Conclusions and Next Steps -- References -- Chapter 10: Key Questions and Recent Research Advances on Harmful Algal Blooms in Fjords and Coastal Embayments -- 10.1 Introduction -- 10.2 Key Question 1: Are There Definable Adaptive Strategies for HAB Species in Confined and Semi-confined Systems? -- 10.3 Key Question 2: What Is the Importance of Life History Transitions and Cyst Distribution in Bloom Initiation and Maintena... -- 10.4 Key Question 3: How Do Physical Dispersion and Aggregation Processes Within a Semi-confined Basin Affect HAB Growth and D... -- 10.5 Key Question 4: What Is the Relative Contribution of Nutrient Flux and Supply Ratios to HAB Dynamics in Eutrophic Versus ... -- 10.6 Key Question 5: What Is the Importance of Spatial Scale and Retention Time in the Expression and Effects of Allelochemica... -- 10.7 Key Question 6: How Do Embayment Morphology, Bathymetry and Hydrodynamics Affect HAB Dynamics?. , 10.8 Key Question 7: Are the Effects of Human Activities (e.g. Aquaculture) and Global Climate Change on HAB Dynamics Magnifie... -- 10.9 Future Research Priorities -- References -- Chapter 11: Key Questions and Recent Research Advances on Harmful Algal Blooms in Eastern Boundary Upwelling Systems -- 11.1 Introduction -- 11.2 Key Question 1: Are There Definable Adaptive Strategies that Characterize HAB Species in Upwelling Systems? -- 11.3 Key Question 2: What Seeding Strategies Persist Within Upwelling Regions and Are They Consistent Among Regions? -- 11.4 Key Question 3: How Do Small-Scale Physical Processes Affect HAB Growth and Dispersion in Upwelling Systems? -- 11.5 Key Question 4: How Do Nutrient Supply Type and Ratios Determine HAB Population Dynamics in Upwelling Systems? -- 11.6 Key Question 5: What Is the Role of Genetic Predisposition Versus Environmental Conditions in Toxin Production in Differe... -- 11.7 Key Question 6: How Does Coastal Morphology and Bathymetry Affect HAB Dynamics in Upwelling Systems? -- 11.8 Key Question 7: What Is the Relative Importance of Cross-Shelf and Along-Shore Advection for HABs in Different Upwelling ... -- 11.9 Key Question 8: Are Climate Indicators Predictive of HAB Events in Upwelling Systems? -- 11.10 HAB Prediction -- 11.11 Conclusions -- References -- Chapter 12: Key Questions and Recent Research Advances on Harmful Algal Blooms in Relation to Nutrients and Eutrophication -- 12.1 Introduction -- 12.2 Key Question 1: Are There Clusters or Specific Types of HAB Species that Are Indicative of Global HAB Increases? -- 12.3 Key Question 2: To What Extent Do Residence Time and Other Physical Processes Impact the Relationship Between Nutrient Lo... -- 12.4 Key Question 3: How Do Feedbacks and Interactions Between Nutrients and the Planktonic, Microbial Food Web Impact HABs an. , 12.5 Key Question 4.0: Do Anthropogenic Alterations of the Food Web, Including Overfishing and Aquaculture Activities, Synergi... -- 12.6 Key Question 5: How Do Anthropogenic Changes in Land Use, Agricultural Use of Fertilizer, NOx Emissions from Vehicles, an... -- 12.7 Key Question 6: How Do the Stoichiometry and Quality of These Nutrient Sources Regulate the Biological Response, Includin... -- 12.8 Key Question 7: Do Climate Change and Climate Variability Have Impacts on Ecosystems that Augment the Impacts of Eutrophi... -- 12.9 Conclusions -- References -- Chapter 13: Key Questions and Recent Research Advances on Harmful Algal Blooms in Benthic Systems -- 13.1 Introduction -- 13.2 Key Question 1: What Is the Biogeography and Biodiversity of BHABs and the Relationships Among Distributions of BHAB Spec... -- 13.2.1 Gambierdiscus -- 13.2.2 Ostreopsis -- 13.3 Key Question 2: What Are the Relationships Between Eutrophication and Nutrient Transformation Pathways and BHAB Populatio... -- 13.3.1 Gambierdiscus -- 13.3.2 Ostreopsis -- 13.4 Key Question 3: Are There Particular Characteristics and Adaptations of BHAB Species That Determine When and Where They O... -- 13.4.1 Gambierdiscus -- 13.4.2 Ostreopsis -- 13.5 Key Question 4: Are There Mechanisms Underlying BHAB Population and Community Dynamics Across Ecosystem Types That Are Re... -- 13.6 Key Question 5: What New Observation and Modelling Approaches Are Available to Help in the Detection and Prediction of BH... -- 13.7 BHAB Toxins -- 13.7.1 Gambierdiscus -- 13.7.2 Ostreopsis -- 13.8 Impacts on Human Health -- 13.8.1 Health Disorders Associated with Gambierdiscus Outbreaks -- 13.8.2 Health Disorders Associated with Ostreopsis Outbreaks -- 13.9 Summary and Recommendations -- References -- Part V: Spotlight on Harmful Algal Blooms in Asia -- Chapter 14: Overview of Harmful Algal Blooms in Asia. , 14.1 Introduction.
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  • 2
    Keywords: Life sciences ; Life Sciences ; Geobiology ; Aquatic ecology ; Marine sciences ; Freshwater ; Life sciences ; Geobiology ; Aquatic ecology ; Marine sciences ; Freshwater
    Description / Table of Contents: Preface to Global Ecology and Oceanography of Harmful Algal BlooHarmful algal Blooms and the Importance of Understanding their Ecology and Oceanography -- Establishment, Goals, and Legacy of the Global Ecology and Oceanography of Harmful Algal Blooms (GEOHAB) Program -- Changing Land, Sea- and Airscapes: Sources of Nutrient Pollution Affecting Habitat Suitability for Harmful Algae -- Harmful Algal Blooms in a Changing Ocean -- Nutrients and HABs: Dynamic Kinetics and Flexible Nutrition -- Mixotrophy in HABs: by Whom, on Whom, When, Why, and What Next -- The Role of Life Cycle Characteristics in Harmful Algal Bloom Dynamics -- Key Questions and Recent Research Advances on Harmful Algal Blooms in Stratified Systems -- Key Questions and Recent Research Advances on Harmful Algal Blooms in Fjords and Coastal Embayments -- Key Questions and Recent Research Advances on Harmful Algal Blooms in Eastern Boundary Upwelling Systems -- Key Questions and Recent Research Advances on Harmful Algal Blooms in Relation to Nutrients and Eutrophication -- Key Questions and Recent Research Advances on Harmful Algal Blooms in Benthic Systems -- Overview of Harmful Algal Blooms in Asia -- Harmful Algal Blooms in the Coastal Waters of China -- Green Tides of the Yellow Sea: Massive Free-floating Blooms of Ulva prolifera -- Ecological Drivers of Green Noctiluca Blooms in Two Monsoonally Driven Ecosystems -- Advancements and Continuing Challenges of Emerging Technologies and Tools for Detecting Harmful Algal Blooms, Their Antecedent Conditions and Toxins, and Applications in Predictive Models -- Recent Advances in Modelling of Harmful Algal Blooms -- Emerging HAB Research Issues in Freshwater Environments -- Mitigation and Control of HABs -- GlobalHAB: Fostering International Coordination on Harmful Algal Bloom Research in Aquatic Systems.
    Type of Medium: Online Resource
    Pages: Online-Ressource (XVI, 461 p. 71 illus., 60 illus. in color, online resource)
    ISBN: 9783319700694
    Series Statement: Ecological Studies, Analysis and Synthesis 232
    RVK:
    Language: English
    Note: Includes bibliographical references and index
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  • 3
    ISSN: 1365-2427
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: 1. The response of phytoplankton to the installation of an artificial destratification system in North Pine Dam, Brisbane (Australia) was investigated over an 18 year period (1984–2002); 11 years before and 7 years after installation.2. An overall increase in phytoplankton abundance was revealed for some groups (in particular, diatoms, cyanobacteria and chlorophytes), but not for others (chlorophytes). Changes in the abundance of chlorophyte functional groups was attributed to eutrophication.3. A strong spatial gradient in phytoplankton abundance and chlorophyll a was observed, with low abundance in the downstream regions affected by the destratification system which was likely because of light limitation induced by vertical mixing. The upstream region acted as a surrogate for the unaltered state of the reservoir, particularly as an indicator of eutrophication without direct influence from the destratification system. Despite the continuous trend in eutrophication of the reservoir, there has been a definite decrease in the rate of eutrophication (approximately 30%) since the installation of the destratification system at the downstream locations.4. Correlations of the dominant cyanobacteria Cylindrospermopsis raciborskii with other genera changed after destratification, indicating that prior to destratification the dominance of Cylindrospermopsis was because of its ability to compete for phosphorus, whereas after destratification its dominance was because of its ability to compete for light.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1365-2109
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: The contribution of epiphytes associated with physical substrates to the nutritional requirements of post-larval shrimp, Penaeus esculentus Haswell, was determined in high-density rearing systems (3000, 6000 and 11 000 m−3). Stable isotope signatures of epiphytes on polyethylene mesh substrate, AquaMats™ and tank walls were compared with shrimp signatures. Two methods were used: the determination of carbon and nitrogen natural abundance ratios; and 15N-nitrogen enrichment ratios after the addition of 15N-ammonium to tanks. Using the natural abundance technique and a simple mixing model, epiphytes were found to contribute substantially to the carbon requirements of post-larval shrimp (39–53%). This was despite the addition of formulated feed at satiation levels. There was no indication of a reduced contribution of carbon from epiphytes to shrimp nutrition at higher shrimp densities. The lack of a difference in the 15N/14N ratios of the two food sources meant that mixing models could not be used to calculate the contribution of nitrogen from epiphytes vs. artificial feed to shrimp nutrition. Using the 15N-nitrogenenrichment method, the amount of nitrogen contributed by epiphytes to shrimp nutrition over 24 h could be determined. This method showed that nitrogen from epiphytes was assimilated by shrimp. 15N-enrichment methods provided a more accurate alternative to natural abundance techniques, particularly when the stable isotope signals ofthe food sources are similar. This experiment hasshown the benefits in providing substrates for P.esculentus in high-density rearing systems to provide an additional food source for shrimp.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1365-2109
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Stable isotope analysis was used to determine the sources of dietary nitrogen (N) and carbon (C) for shrimp during the rearing phase in extensive rice-shrimp ponds in My Xuyen and Gia Rai districts, Vietnam. Farm-made feed was added as a food source in shrimp ponds in My Xuyen district, and based on stable isotope analyses, was generally a poor dietary source. The commercial formulated feed used in Gia Rai also appeared to contribute little directly to the nutritional needs of the shrimp. In contrast, the natural biota in all ponds appeared to contribute substantially. In particular, biota from beam trawls and benthic organic matter were the most likely sources of nutrition in My Xuyen ponds, while benthic organic matter was the main source in Gia Rai ponds. δ15N ratios in the natural biota in My Xuyen farms decreased over the growing season, suggesting increased N fixation in the case of the benthic organic matter reaching values as low as 1‰. This suggests N-limitation in the ponds and that natural biota become increasingly dependent on N fixed by algae and/or other microorganisms. There is the potential to promote the growth of the plankton and hence, the other natural biota, by the judicious addition of fertilizer.
    Type of Medium: Electronic Resource
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  • 6
    Publication Date: 2017-01-20
    Description: There have been many individual phytoplankton datasets collected across Australia since the mid 1900s, but most are unavailable to the research community. We have searched archives, contacted researchers, and scanned the primary and grey literature to collate 3,621,847 records of marine phytoplankton species from Australian waters from 1844 to the present. Many of these are small datasets collected for local questions, but combined they provide over 170 years of data on phytoplankton communities in Australian waters. Units and taxonomy have been standardised, obviously erroneous data removed, and all metadata included. We have lodged this dataset with the Australian Ocean Data Network (http://portal.aodn.org.au/) allowing public access. The Australian Phytoplankton Database will be invaluable for global change studies, as it allows analysis of ecological indicators of climate change and eutrophication (e.g., changes in distribution; diatom:dinoflagellate ratios). In addition, the standardised conversion of abundance records to biomass provides modellers with quantifiable data to initialise and validate ecosystem models of lower marine trophic levels.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
    Format: application/pdf
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  • 7
    Publication Date: 2022-05-26
    Description: Author Posting. © Elsevier B.V., 2008. This is the author's version of the work. It is posted here by permission of Elsevier B.V. for personal use, not for redistribution. The definitive version was published in Marine Pollution Bulletin 56 (2008): 1049-1056, doi:10.1016/j.marpolbul.2008.03.010.
    Description: The proposed plan for enrichment of the Sulu Sea, Philippines, a region of rich marine biodiversity, with thousands of tonnes of urea in order to stimulate algal blooms and sequester carbon is flawed for multiple reasons. Urea is preferentially used as a nitrogen source by some cyanobacteria and dinoflagellates, many of which are neutrally or positively buoyant. Biological pumps to the deep sea are classically leaky, and the inefficient burial of new biomass makes the estimation of a net loss of carbon from the atmosphere questionable at best. The potential for growth of toxic dinoflagellates is also high, as many grow well on urea and some even increase their toxicity when grown on urea. Many toxic dinoflagellates form cysts which can settle to the sediment and germinate in subsequent years, forming new blooms even without further fertilization. If large-scale blooms do occur, it is likely that they will contribute to hypoxia in the bottom waters upon decomposition. Lastly, urea production requires fossil fuel usage, further limiting the potential for net carbon sequestration. The environmental and economic impacts are potentially great and need to be rigorously assessed.
    Description: This paper was developed under the Global Ecology and Oceanography of Harmful Algal Blooms (GEOHAB) core research project on HABs and Eutrophication and the GEOHAB regional focus on HABs in Asia. GEOHAB is supported by the International Oceanographic Commission (IOC) of UNESCO and by the Scientific Committee on Oceanic Research (SCOR), which are, in turn, supported by multiple agencies, including NSF and NOAA of the USA.
    Keywords: Urea dumping ; Ocean fertilization ; Carbon credits ; Sulu Sea ; Carbon sequestration ; Harmful algae ; Toxic dinoflagellates ; Cyanobacteria ; Hypoxia
    Repository Name: Woods Hole Open Access Server
    Type: Preprint
    Format: application/pdf
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