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  • 1
    Online Resource
    Online Resource
    Newark :John Wiley & Sons, Incorporated,
    Keywords: Toxic algae. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (699 pages)
    Edition: 1st ed.
    ISBN: 9781118994696
    Language: English
    Note: Harmful Algal Blooms: A Compendium Desk Reference -- Contents -- List of Contributors -- Acknowledgments -- Introduction -- Chapter 1: Causes of Harmful Algal Blooms -- 1.1 Introduction -- 1.2 ``Getting There´´: The Classic Perspective on Introduced Species and Links to Cultural Eutrophication -- 1.2.1 Introduced Species -- 1.2.2 Anthropogenically Introduced Nutrients -- 1.3 ``Being There´´: Blooms and Why They Succeed -- 1.3.1 Nutrient-Related HAB -- 1.3.2 Resource Ratios, Nutrient Stoichiometry, and Optimal Nutrient Ratios -- 1.3.3 Diversity in Use of Forms of Nitrogen -- 1.3.4 Toxicity -- 1.3.5 Mixotrophy: Use of ``Packaged´´ and Dissolved Particulate Nutrients -- 1.3.6 Other Adaptations -- 1.4 ``Staying There´´: Links to Physical Structure and Climate -- 1.4.1 Physical Structure: Large-Scale and Small-Scale Natural Hydrological Features -- 1.4.2 Physical Dynamics: Anthropogenic Hydrological Changes -- 1.4.3 Reinforcing Feedbacks -- 1.4.3.1 Trophic Disruptions -- 1.4.3.2 Biogeochemical Alterations -- 1.4.4 Climate Change -- 1.5 Conclusions -- Acknowledgments -- References -- Chapter 2: Detection and Surveillance of Harmful Algal Bloom Species and Toxins -- 2.1 Introduction -- 2.2 Organism Detection -- 2.2.1 Visual/Optical -- 2.2.1.1 Light Microscopy (LM)/Utermöhl's -- 2.2.1.2 Light Microscopy/Flow Cytometry -- 2.2.1.3 In Vivo Fluorometry -- 2.2.1.4 Spectral Absorbance/Spectroradiometry -- 2.2.2 Molecular -- 2.2.2.1 Whole Cell Format -- 2.2.2.1.1 Antibodies -- 2.2.2.1.2 FISH -- 2.2.2.1.3 Flow Cytometry with FISH, CARD FISH, and Solid-Phase Cytometry -- 2.2.2.1.4 CARD FISH on a Slide or in Suspension for Liquid Flow Cytometry -- 2.2.2.1.5 CARD FISH on a Filter or in Suspension for Solid-Phase Cytometry -- 2.2.2.2 Cell-Free Format -- 2.2.2.2.1 Sandwich Hybridization Assay (SHA). , 2.2.2.2.2 Microarrays (Slide-Based, Microelectrode-Based, Luminex, etc.) -- 2.2.2.2.3 Biosensors -- 2.2.2.2.4 qPCR -- 2.3 Toxin Detection -- 2.3.1 In Vivo Assays -- 2.3.1.1 Rat Bioassay -- 2.3.1.2 Mouse Bioassay -- 2.3.1.2.1 AOAC Mouse Bioassay for Paralytic Shellfish Toxins -- 2.3.1.2.2 APHA Mouse Bioassay for Neurotoxin Shellfish Poisons -- 2.3.1.2.3 Mouse Bioassay for Lipophilic Shellfish Toxins -- 2.3.1.2.4 Perspectives -- 2.3.2 In Vitro Assays -- 2.3.2.1 Functional Assays -- 2.3.2.1.1 Receptor Binding Assays -- 2.3.2.1.2 Enzyme Inhibition Assays -- 2.3.2.1.3 Cell-Based (Cytotoxicity) Assays (CBAs) -- 2.3.2.2 Structural Assays -- 2.3.2.2.1 Immunoassays -- 2.3.2.2.2 Molecularly Imprinted Polymers (MIPs) -- 2.3.2.2.3 Aptamers -- 2.3.2.3 Biosensors -- 2.3.3 Analytical Techniques -- 2.3.3.1 High-Performance Liquid Chromatography with Optical Detection (UV or FLD) -- 2.3.3.1.1 Domoic Acid -- 2.3.3.1.2 Paralytic Shellfish Toxins -- 2.3.3.1.3 Other Toxin Classes -- 2.3.3.2 Liquid Chromatography-Mass Spectrometry (LC-MS) and Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS) -- 2.3.3.2.1 Lipophilic Toxins -- 2.3.3.2.2 Paralytic Shellfish Toxins -- 2.3.3.2.3 Other Toxin Classes -- 2.3.3.3 Other Analytical Methods: Capillary Electrophoresis (CE), Matrix-Assisted Laser Desorption Ionization-Time of Flight (MALDI-TOF), and Laser Ablation Electrospray Ionization (LAESI) -- 2.3.3.4 Perspectives -- 2.4 Autonomous, In Situ Technologies -- 2.4.1 Environmental Sample Processor (McLane Research Laboratories) -- 2.4.2 Imaging Flow Cytobot (McLane Research Laboratories) -- 2.4.3 Optical Phytoplankton Discriminator (aka BreveBuster -- Mote Marine Laboratory) -- 2.4.4 CytoBuoy (CytoBuoy b.v.) -- 2.4.5 SPATT Passive Samplers -- 2.5 Conclusions and Future Prospects -- Disclaimer -- References and Further Reading. , Chapter 3: Modeling Marine Harmful Algal Blooms: Current Status and Future Prospects -- 3.1 Introduction -- 3.2 Building Models to Describe Ecological Events -- 3.3 Limitations to What Models Can Do, and Why -- 3.3.1 Building Models -- 3.3.2 Model Complexity -- 3.3.3 The Need for Data -- 3.3.4 Validating Models -- 3.4 Modeling T-HAB and ED-HAB Events -- 3.5 How Good Are Current HAB Models? -- 3.6 Future Modeling of T-HAB and ED-HAB: Managing Expectations -- 3.7 Improving Our Capabilities -- 3.7.1 Changes in the Biological-Modeling Interface -- Acknowledgments -- References -- Chapter 4: Harmful Algal Blooms and Shellfish -- 4.1 Introduction -- 4.2 Major Shellfish Poisonings -- 4.2.1 Paralytic Shellfish Poisoning (PSP) -- 4.2.2 Diarrheic Shellfish Poisoning (DSP) -- 4.2.3 Neurotoxic Shellfish Poisoning (NSP) -- 4.2.4 Amnesic Shellfish Poisoning (ASP) -- 4.2.5 Azaspiracid Shellfish Poisoning (AZP) -- 4.3 Other Toxins: Pectenotoxins (PTX) and Yessotoxins (YTX) -- 4.4 Emerging Shellfish Poisonings -- 4.5 Toxin Uptake, Accumulation, and Depuration -- 4.6 Shellfish Contamination in North America -- 4.6.1 Bivalves -- 4.6.1.1 Paralytic Shellfish Contamination -- 4.6.1.2 Diarrheic Shellfish Contamination -- 4.6.1.3 Neurotoxic Shellfish Contamination -- 4.6.1.4 Amnesic Shellfish Contamination -- 4.6.2 Gastropods -- 4.6.3 Crustaceans -- 4.7 Impacts on Shellfish -- 4.8 Conclusions and Perspectives -- References and Further Reading -- Chapter 5: Vulnerabilities of Marine Mammals to Harmful Algal Blooms -- 5.1 Introduction -- 5.2 Overview of Algal Toxins -- 5.2.1 Brevetoxins -- 5.2.2 Ciguatoxins -- 5.2.3 Diarrhetic Shellfish Poisoning Toxins -- 5.2.4 Domoic Acid -- 5.2.5 Paralytic Shellfish Toxins -- 5.2.6 Other Algal and Cyanobacterial Toxins -- 5.3 Impacts of Algal Toxins Specific to Marine Mammals. , 5.3.1 The Effects of Toxin Exposure Depend on Animal Physiology and Behavior -- 5.3.2 Emerging Issues: Non-acute and Multiple Toxin Exposure -- 5.3.3 Prospects for Managing Impacts of HAB -- 5.4 Considerations for the Evaluation of HAB Toxins in Marine Mammals -- 5.4.1 Sampling Marine Mammals for HAB Toxin Analysis -- 5.4.2 Priority Needs for Investigating HAB Toxin Involvement in Marine Mammal Morbidity and Mortality -- Abbreviations -- References and Further Reading -- Chapter 6: Interactions between Seabirds and Harmful Algal Blooms -- 6.1 Introduction -- 6.2 Historical Interactions between HAB and Seabirds -- 6.2.1 Paralytic Shellfish Poisoning (PSP) -- 6.2.2 Neurotoxic Shellfish Poisoning (NSP) -- 6.2.3 Amnesic Shellfish Poisoning -- 6.2.4 Akashiwo sanguinea -- 6.2.5 Diarrheic Shellfish Poisoning (DSP) -- 6.2.6 CyanoHAB -- 6.3 Improved Monitoring and Establishment of Causality -- 6.3.1 Coordinating Monitoring and Pathology to Confirm Relationships between HAB and Seabird Mortality -- 6.3.2 Seabirds as Biological Indicators -- 6.4 Implications for Conservation -- References -- Chapter 7: Food Web and Ecosystem Impacts of Harmful Algae -- 7.1 Introduction -- 7.2 Approaches, Pitfalls, Progress, and Goals -- 7.3 High-Biomass Algal Blooms -- 7.4 Emerging Recognition of the Roles of Allelochemicals -- 7.4.1 Microalgae -- 7.4.2 Thalloid Macroalgae -- 7.4.3 Filamentous Mat-Forming Macroalgae -- 7.5 Toxigenic Algae in Aquatic Food Webs -- 7.5.1 Toxic Microcystis aeruginosa Blooms across North America -- 7.5.2 Toxic Prymnesium parvum Blooms and Fish Communities in Two Texas Rivers -- 7.5.3 Toxic Pseudo-nitzschia Blooms in Coastal Upwelling Areas -- 7.5.4 Toxic Alexandrium Blooms in the Northeast -- 7.5.5 Toxic Karenia brevis Blooms along the Florida Coast -- 7.6 Ecosystem-Disruptive Algal Blooms -- 7.7 Future Directions. , Appendix A: Scientific Names for Organisms Listed by Common Name in This Chapter, Also Indicating Species Affected by Karenia brevis (Kb) -- References and Further Reading -- Chapter 8: Assessing the Economic Consequences of Harmful Algal Blooms: A Summary of Existing Literature, Research Methods, Data, and Information Gaps -- 8.1 Introduction -- 8.2 Overview -- 8.3 Research Methodologies -- 8.4 Sources and Types of Data -- 8.5 Spatial and Temporal Scopes -- 8.6 Nature of the Hazard -- 8.7 Current Research Gaps -- 8.8 Conclusion -- Acknowledgments -- References and Further Reading -- Chapter 9: Public Health and Epidemiology -- 9.1 Introduction -- 9.2 What Is Public Health and Epidemiology? -- 9.3 HAB and Human Illness -- 9.3.1 Paralytic Shellfish Poisoning (PSP) -- 9.3.1.1 Exposure -- 9.3.1.2 Clinical Symptoms -- 9.3.1.3 Treatment -- 9.3.2 Amnesic Shellfish Poisoning (ASP) -- 9.3.2.1 Exposure -- 9.3.2.2 Clinical Syndrome -- 9.3.2.3 Treatment -- 9.3.3 Neurotoxic Shellfish Poisoning (NSP) -- 9.3.3.1 Exposure -- 9.3.3.2 Clinical Illness -- 9.3.3.3 Treatment -- 9.3.4 Brevetoxin Inhalation Syndrome (BIS) -- 9.3.4.1 Exposure -- 9.3.4.2 Clinical Illness -- 9.3.4.3 Treatment -- 9.3.5 Diarrhetic Shellfish Poisoning (DSP) -- 9.3.5.1 Exposure -- 9.3.5.2 Clinical Syndrome -- 9.3.5.3 Treatment -- 9.3.6 Ciguatera Fish Poisoning (CFP) -- 9.3.6.1 Exposure -- 9.3.6.2 Clinical Illness -- 9.3.6.3 Treatment -- 9.3.7 Azaspiracid Shellfish Poisoning (AZP) -- 9.3.7.1 Exposure -- 9.3.7.2 Clinical Syndrome -- 9.3.7.3 Treatment -- 9.3.8 Toxic Cyanobacteria -- 9.3.8.1 Exposure -- 9.3.8.2 Clinical Syndromes -- 9.3.8.3 Treatment -- 9.4 The HAB Manager's Role in Preventing HAB-Related Illnesses -- 9.4.1 HAB Management Exemplars -- 9.4.2 The Native American Perspective from Washington State, USA: Domoic Acid and Paralytic Shellfish Toxins -- 9.4.2.1 Background. , 9.4.2.2 Tribal Capacity and Inclusion.
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    The @journal of eukaryotic microbiology 44 (1997), S. 0 
    ISSN: 1550-7408
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: . The toxic dinoflagellate, Pfiesteria piscicida, was recently implicated as the causative agent for about 50% of the major fish kills occurring over a three-year period in the Albemarle-Pamlico Estuarine System of the southeastern USA. Transformations between life-history stages of this dinoflagellate are controlled by the availability of fresh fish secretions or fish tissues, and secondarily influenced by the availability of alternate prey including bacteria, algae, microfauna, and mammalian tissues. Toxic zoospores of P. piscicida subdue fish by excreting lethal neurotoxins that narcotize the prey, disrupt its osmoregulatory system, and attack its nervous system. While prey are dying, the zoospores feed upon bits of fish tissue and complete the sexual phase of the dinoflagellate life cycle. Other stages in the complex life cycle of P. piscidia include cryptic forms of filose, rhizopodial, and lobose amoebae that can form within minutes from toxic zoospores, gametes, or planozygotes. These cryptic amoebae feed upon fish carcasses and other prey and, thus far, have proven less vulnerable to microbial predators than flagellated life-history stages. Lobose amoebae that develop from toxic zoospores and planozygotes during colder periods have also shown ambush behavior toward live fish. In the presence of abundant flagellated algal prey, amoeboid stages produce nontoxic zoospores that can become toxic and form gametes when they detect what is presumed to be a threshold level of a stimulatory substance(s) derived from live fish. The diverse amoeboid stages of this fish “ambush-predator” and at least one other Pfiesteria-like species are ubiquitous and abundant in brackish waters along the western Atlantic and Gulf Coasts, indicating a need to re-evaluate the role of dinoflagellates in the microbial food webs of turbid nutrient-enriched estuaries.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 358 (1992), S. 407-410 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The alga, which represents a new family, genus and species within the order Dinamoebales (K. Steidinger, personal com-munication), was inadvertently discovered by fish pathologists5 who observed sudden death of cultured tilapia (Oreochromis aureus and O. mossambica) several days after their ...
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1573-5117
    Keywords: Benthic ; macroalgae ; macrophytes ; niche pre-emption ; riparian shading ; stream
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The seasonal distribution and abundance of benthic macrophytes were characterized from second- and third-order segments of a stream flowing over granite flatrock in the southeastern United States. Eighteen genera were identified over two annual cycles including macroalgae (60% of the total), angiosperms (30%), and bryophytes (10%). Light availability as affected by riparian shading was a major factor influencing community structure. Based on strong agreement among two-way indicator species analysis, detrended correspondence analysis and cluster analysis, we identified four communities characteristic of distinct light regimes and seasons. In shaded sites the red alga Lemanea australis was dominant during cool seasons, and the aquatic moss Fontinalis sp. was dominant during warm seasons. By contrast, in open sites L. australis and the angiosperm Podostemum ceratophyllum were co-dominant during cool seasons, and P. ceratophyllum was also dominant in warm seasons. The prolific macrophyte communities followed a pattern of broad seasonal maxima for dominant species along with rapid fluctuations in ephemerals. The community dynamics suggest that competitive interactions control space partitioning among macrophytes on the granite flatrock.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1573-5117
    Keywords: Rhode Island ; streams ; lotic ; riparian shading
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Thirteen physical and chemical characteristics of five softwater streams in Rhode Island, U.S.A. were examined biweekly to monthly for seventeen months. One first-order, two second-order and two third-order streams were included in the study. The mean annual temperature ranged from 9.4 °C in the spring-fed headwater stream to 14 °C in an open, third-order stream, with seasonal fluctuations of 14.5 ° to 28.0 °C. The heavily shaded first-order stream generally received less than 30% incident light at its surface throughout the year. By contrast, the other streams either were unshaded or were associated with distinct periodicity of incident light quantity due to seasonality of the tree canopy. The mean annual current velocity ranged from 22 to 100 cm s−1 among the streams, pH ranged from 3.7 to 6.4, and specific conductance was generally less than 50 µS cm−1. The first-order stream was associated with lowest mean annual temperature, current velocity, light penetration and nitrate, as well as relatively high and constant silica concentrations. Temperature was negatively correlated with current speed in second- and third-order streams, and temperature was also negatively correlated with light in shaded streams. There was a general pattern in all streams for decreasing pH following precipitation events. Concentrations of total phophorus, nitrate-nitrogen, ammonium-nitrogen and silica were among the lowest reported for lotic systems.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1573-5117
    Keywords: Rhode Island ; streams ; lotic ; macroalgae
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Forty stream segments in Rhode Island, U.S.A., were examined seasonally from June 1979 to March 1982. Thirty-nine species of macroalgae were collected, respresenting 25 genera. The composition of the lotic flora was 54% green algae, 31% red algae, 5% blue-green algae, 5% xanthophytes, 3% chrysophytes and 3% diatoms. The majority of these taxa (85%) were filamentous. From a biweekly examination of five stream segments, macroalgal communities could be grouped according to light regime. Species in unshaded streams exhibited little seasonality, whereas in streams shaded by one or more layers of riparian canopy, maxima in species numbers and abundance occurred during colder seasons. The most widespread and abundant species were the blue-green alga Phormidium retzii, the green alga Draparnaldia acuta, and the diatom Eunotia pectinalis. P. retzii and E. pectinalis were aseasonal annuals, while D. acuta was primarily a winter-spring form. It appears that pH is a major factor affecting broad geographic distribution patterns of stream macroalgae, whereas the light regime established by overhanging canopy is an important factor which influences localized abundance and seasonality of lotic macroalgal communities. Niche pre-emption appears to be a common mode of resource space division among stream macroalgae in Rhode Island. E. pectinalis is the strongly developed dominant in this drainage system.
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1573-5117
    Keywords: Rhode Island ; streams ; macrophytes ; macroalgae ; watershed ; drainage ; basin
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The Wood River watershed, a small well-defined drainage basin in Rhode Island was monitored seasonally for all macrophytic vegetation and various physical variables. Twenty-four segments, 20 m in length were sampled. Mean stream depth, width and current velocity increased by 3 to 8 fold from 1st- to 4th-order segments. Light penetration was positively correlated with the above variables (p 〈 0.05) and increased by 11 fold from the headwaters to the mouth during September when the riparian canopy was maximum. 74 subgeneric taxa of macrophytes were collected in the Wood River basin, 36% algae, 13% bryophytes, 4% vascular cryptograms and 45% angiosperms. The highest diversity occurred in the 4th-order segments throughout the year. Species numbers were positively correlated with depth, width and light penetration (p 〈 0.05). Vascular plants dominated all orders, but their proportion doubled from 1st- to 4th-order streams. Macrophyte cover was twice as high in the 4th-order segments in June and September as in the other orders. Macrophyte abundance was positively correlated to light penetration and negatively correlated to the ratio of nonvascular: vascular plants (p 〈 0.05). Two distinct clusters were found for the predominant species. The first cluster contained mostly large angiosperms, which were rooted in sediments, while the second cluster was composed of small epilithic algae and bryophytes. The moss, Fontinalis antipyretica, was the most frequent species, occurring in 51% of the samples and in all 4 orders throughout the year.
    Type of Medium: Electronic Resource
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  • 8
    Publication Date: 2022-05-25
    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 Harmful Algae 8 (2008): 39-53, doi:10.1016/j.hal.2008.08.017.
    Description: Coastal waters of the United States (U.S.) are subject to many of the major harmful algal bloom (HAB) poisoning syndromes and impacts. These include paralytic shellfish poisoning (PSP), neurotoxic shellfish poisoning (NSP), amnesic shellfish poisoning (ASP), ciguatera fish poisoning (CFP) and various other HAB phenomena such as fish kills, loss of submerged vegetation, shellfish mortalities, and widespread marine mammal mortalities. Here, the occurrences of selected HABs in a selected set of regions are described in terms of their relationship to eutrophication, illustrating a range of responses. Evidence suggestive of changes in the frequency, extent or magnitude of HABs in these areas is explored in the context of the nutrient sources underlying those blooms, both natural and anthropogenic. In some regions of the U.S., the linkages between HABs and eutrophication are clear and well documented, whereas in others, information is limited, thereby highlighting important areas for further research.
    Description: Support was provided through the Woods Hole Center for Oceans and Human Health (to DMA), National Science Foundation (NSF) grants OCE-9808173 and OCE-0430724 (to DMA), OCE-0234587 (to WPC), OCE04-32479 (to MLP), OCE-0138544 (to RMK), OCE-9981617 (to PMG); National Institute of Environmental Health Sciences (NIEHS) grants P50ES012742-01 (to DMA) and P50ES012740 (to MLP); NOAA Grants NA96OP0099 (to DMA), NA16OP1450 (to VLT), NA96P00084 (to GAV and CAH), NA160C2936 and NA108H-C (to RMK), NA860P0493 and NA04NOS4780241 (to PMG), NA04NOS4780239-02 (to RMK), NA06NOS4780245 (to DWT). Support was also provided from the West Coast Center for Oceans and Human Health (to VLT and WPC), USEPA Grant CR826792-01-0 (to GAV and CAH), and the State of Florida Grant S7701617826 (to GAV and CAH).
    Keywords: Harmful algal blooms ; HABs ; Red tides ; Eutrophication ; Nutrients ; Nitrogen ; Phosphorus
    Repository Name: Woods Hole Open Access Server
    Type: Preprint
    Format: application/pdf
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  • 9
    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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  • 10
    Publication Date: 2022-05-26
    Description: © The Author(s), 2016. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Protist 167 (2016): 106–120, doi:10.1016/j.protis.2016.01.003.
    Description: Arranging organisms into functional groups aids ecological research by grouping organisms (irrespective of phylogenetic origin) that interact with environmental factors in similar ways. Planktonic protists traditionally have been split between photoautotrophic “phytoplankton” and phagotrophic “microzooplankton”. However, there is a growing recognition of the importance of mixotrophy in euphotic aquatic systems, where many protists often combine photoautotrophic and phagotrophic modes of nutrition. Such organisms do not align with the traditional dichotomy of phytoplankton and microzooplankton. To reflect this understanding, we propose a new functional grouping of planktonic protists in an eco-physiological context: (i) phagoheterotrophs lacking phototrophic capacity, (ii) photoautotrophs lacking phagotrophic capacity, (iii) constitutive mixotrophs (CMs) as phagotrophs with an inherent capacity for phototrophy, and (iv) non-constitutive mixotrophs (NCMs) that acquire their phototrophic capacity by ingesting specific (SNCM) or general non-specific (GNCM) prey. For the first time, we incorporate these functional groups within a foodweb structure and show, using model outputs, that there is scope for significant changes in trophic dynamics depending on the protist functional type description. Accordingly, to better reflect the role of mixotrophy, we recommend that as important tools for explanatory and predictive research, aquatic food-web and biogeochemical models need to redefine the protist groups within their frameworks.
    Description: This work was funded by grants to KJF and AM from the Leverhulme Trust (International Network Grant F00391 V) and NERC (UK) through its iMARNET programme NE/K001345/1.
    Keywords: Plankton functional types (PFTs) ; Phagotroph ; Phototroph ; Mixotroph ; Phytoplankton ; Microzooplankton
    Repository Name: Woods Hole Open Access Server
    Type: Article
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