Anderson, O. Roger (ora1)

O. Roger Anderson

Professor Emeritus of Natural Science
Senior Research Scientist (Adj.) Columbia University

Office Location:

950C Building 528

Office Hours:

M & W 6:00-7:30

Educational Background

Bachelor of Arts (Botany) Washington University, St. Louis (1959)
Master of Arts (Biological Education) Washington University (1961)
Doctorate (Biology and Education) Washington University (1964)

Scholarly Interests

Neurocognitive theory applied to science learning. Electron microscopic and physiological ecological studies of eukaryotic microbiota.

Selected Publications

A Description of Cochliopodium megatetrastylus n. sp. Isolated From a Freshwater Habitat. O. R. Anderson and Y. Tekle. Acta Protozoologica. 52: 55-64. 2013.

Progress in Application of the Neurosciences to an Understanding of Human Learning: The Challenge of Finding a Middle-ground Neuroeducational Theory.   O. R. Anderson. International Journal of Science and Mathematics Education. (DOI) 10.1007/s10763-013-9455-3. 2013.

Mind, Brain and the Organization of Knowledge for Effective Recall and Application. O. R. Anderson. LEARNing Landscapes (special issue on Brain, Mind and Learning). 5(1): 45-61. 2011.

The Reciprocal Relationships between High Latitude Climate Changes and the Ecology of Terrestrial Microbiota:  Emerging Theories, Models, and Empirical Evidence, Especially Related to Global Warming. O. R. Anderson in: Tundras: Vegetation, Wildlife and Climate Trends. Nova Science Publ. Chapter 2: 47-79. 2010.

The Role of amoeboid protists and the microbial community in moss-rich terrestrial ecosystems: Biogeochemical implications for the carbon budget and carbon cycle, especially at higher latitudes. O. R. Anderson. J. Eukaryot. Microbiol. 55:145-150. 2008.

Ultrastructure of Diplophrys parva, a New Small Freshwater Species, and a Revised Analysis of Labyrinthulea (Heterokonta). O. R. Anderson and T. Cavalier-Smith. Acta Protozoologica. 51: 291-304. 2012.

The Fate of Organic Sources of Carbon in Moss-rich Tundra Soil Microbial Communities: A Laboratory Experimental Study. O. R. Anderson, J. Eukaryot. Microbiol. 59: 564-570. 2012.

Arctic terrestrial microbial communities in a changing climate, their roles in, and responses to, changing atmospheric CO2 concentrations: A brief review of recent advances. O. R. Anderson, Env. Sci. & Ecol. 8 May 2015, p. 1-7.

Review: Marine and estuarine natural microbial biofilms: ecological and biogeochemical dimensions. O. R. Anderson. AIMS Microbiol. 2(3):304-331. 2016.

The Role of Heterotrophic Microbial Communities in Estuarine C Budgets and the Biogeochemical C Cycle with Implications for Global Warming: Research Opportunities and Challenges. O. R. Anderson, J. Eukaryot. Microbiol. 63:394-409. 2016.

Students’ perceptions of a blended learning experience in dental education.  S. Varthis and O. R. Anderson. Europ. J. Dental Educ. 2016; 1–7. doi:10.1111/eje.12253. 2018.

Evidence for Coupling of the Carbon and Phosphorus Biogeochemical Cycles in Freshwater Microbial Communities. O. R. Anderson. Frontiers, Mar. Biogeochem., DOI: 10.3389/fmars.2018.00020. 2018.

Ecophysiology and Adaptability of Terrestrial Ferns: Perspectives in a Changing Global Climate. O. R. Anderson.  In: Ferns: Ecology, Importance to Humans and Threats. Nowicki L., Kowalska A. (Eds.) Nova Scientific Publishers, pp. 1-55. 2018.

A Half-century of Research on Free-living Amoebae (1965-2017): Review of Biogeographic, Ecological and Physiological Studies. Acta Protozool. 57:1-28. 2018.

Curriculum Vita

Updated: February 2021

  • N.S.F.  OCE 75-14374   Biology of Planktonic Foraminifera: A Development of Culturing Techniques (Co-P.I.)    5/1/75 - 8/31/78     $52,700
  • N.S.F. OCE 78-25450  Field and Laboratory Studies of Planktonic Foraminifera.  (Co-P.I.)  12/15/78 - 5/31/82  $463,411
  • N.S.F. OCE 80-05131  Biology of Radiolaria: Ecology, Physiology & LIfe History.  (P.I.)  9/15/80 - 2/28/83   $148,643
  • N.S.F.  OCE 81-17715  Planktonic Foraminifera: Experimental Field and Laboratory Studies of Living Species for Paleo Environmental Calibration.  (Co-P.I./P.I.)  12/1/81 - 11/30/85  $591,629
  • N.S.F.  OCE 82-07495    Field and Experimental Studies of Radiolarian Biology  (P.I.)   9/1/82 - 2/28/85  $279,788
  • N.S.F.  OCE 84-08137   The Physiological Ecology of Radiolaria  (P.I.)  11/1/84 - 10/31/87  $330,000
  • N.S.F.  BSR 85-07102   Transmission Electron Microscope Facility for Fine Structural  and Marine Physiological Ecological Research  (P.I.)   7/15/85 - 6/30/86  $60,000
  • N.S.F.  Experimental and Field Studies of Radiolarian Ecology and Biogenic Opal Productivity  (P.I.)
    4/1/87 - 9/30/91   $269,463        
  • Howard Hughes Medical Foundation.  Research Experiences for Minority Secondary School Students (Collaboration  with Amer. Mus. Nat. Hist.)  1993-1996  $300,000
  • N.S.F.  EARTHVIEW (Computer Instructional Program, Constructivist  Learning) (Co.P.I.)  1994-1995  $206,000
  • Bristol Meyers Squibb CHEMOBILE Instrumentation in the Schools, Director   1994-1996   $100,000
  • Center for Environmental Research and Conservation (CERC)  Biosphere 2 Leaf Analyses (P.I.)  1996-1997  $6,000
  • N.S.F.  EARTHVIEW  EXPLORER   (Computer-based Global Processes Model) (Co.P.I.)  1996-1999   $980,000
  • Packard Foundation   EFFECTS OF CO2 FOR GROWTH ON PLANT PROPERTIES (Co.P.I.)  1999-2005   $159,600
  • N.S.F.  Science of Learning Center for the Study of Science Learning in Urban Educating Institutions [P.I.]   $150,000
  • Spencer Foundation Ph.D. Training Grant (Teachers College Award)  (P.I. with 3 Co.P.I.s)  2005-2007  $87,600
  • N.S. F. Autotrophic Respiration in A Changing Arctic Climate: Mechanistic Responses and Ecosystem Consequences (Co-PI)  2008-2010  $389,700
  • N.S.F. SGER: Reassessing the role of planktonic amoeboid protists in estuarine microbial food webs (Co-
    PI). 9/15/08 – 8/31/09 $64,040
  • N.S.F. The POlar Learning And Responding (POLAR) Climate Partnership (NSF 1043271) (PI, TC and Co-PI Earth Institute) 9/19/10 – 9/14/11 $503, 391
  1. Fellow: American Association for the Advancement of Science (AAAS).
  2. Fellow: Cushman Foundation for Foraminiferal Research (Washington, D. C.).
  3. Bermuda Biological Station Award for Marine Science Research (Marine Biomineralizing Protista) - 1979.
  4. Diatom Species:  Cocconeis Andersonii  (Reimer and Lee) named in honor of the      research contributions by O. R. Anderson to Protistology and symbiosis.
  5. Medal of the Paleontological Society of Japan, Sendai Japan - 1999
  6. Educational Press - 1997. Distinguished Achievement in Educational Publishing, 1997 EdPress Award for outstanding book: "Explore the World Using Protozoa."  O. R. Anderson and M. Druger (Eds.)  NSTA and Society of Protozoologists.
  7. Outstanding Teaching Award, Columbia Univ. T. C. Student Senate – June 2000.6.  Association for Science Teacher Education (AETS) and National Science Teacher (NSTA) award for outstanding science teacher education paper published in 2010.
  8. Award: Fifty Years of Distinguished Service as Professor of Natural Sciences. Columbia University, Teachers College – 12 April 2014.
  9. Cutting Edge Science (AAAS) Special Invited Lecturer on Radiolaria in a Changing Global Climate. AAAS Headquarters, Washington, D. C. May 1st, 2014.


Teaching Experience:
  • 1963 Washington University, Summer School
  • 1963 Washington University, Fall Semester
  • 1964 Washington University, Spring Semester
  • 1964-67 Assistant Professor of Natural Sciences
  • Columbia University, Teachers College
  • 1968-70 Associate Professor of Natural Sciences
  • Columbia University, Teachers College
  • 1971- Professor of Natural Sciences
  • Columbia University, Teachers College
  • 1992-1993 College Research Coordinator, Teachers College.
  • 1993- Faculty Member At Large. Graduate School of Arts and Sciences, Columbia Univ.
  • 1993-1996 Associate Director, Division of Instruction, T. C.

Consulting Experience:

  • Biological Consultant - New Jersey Colleges Board of Higher Education
  • Medical Education Consultant - Albert Einstein College of Medicine,Yeshiva University, New York
  • Biological Consultant - Benchmark Films, Briarcliff Manor, N. Y. and Boulton-Hawker Films, Ltd. Suffolk, England
  • Ph.D. Committee Member - Biology Dept. City University of New York
  • Biology, M.I.T.-Woods Hole Oceanographic Institute.
  • Advisor, Alternative Methods of Assessment: The Regents Exam., NYS. 1993-1996
  • Research Mentor, Minority Students in Precollege Educ. American Museum of Natural History, NYC. 1993-1995
  • Science Education Consultant, Division of Mathematics and Science of Montclair State University, Montclair, New Jersey. 1995-1996.
  • Chair of N.S.F. National Visiting Committee, Arizona State Univ. Ariz. Collaborative for Preparation of Teachers grant 1995-2000
  • Scientific Advisory Board, American Type Culture Collection. Manassas, VA. 2000-2004

  • Tenure Review Committee M.I.T./ W.H.O I. 2005

Research and Service Experience:

  • 1966-70 Res. Associate, Biological Oceanography Columbia Univ.
  • 1970-83 Sr. Research Associate, Biological Oceanography.
  • 1983- Sr. Research Scientist (new title) Biological Oceanography.
  • 1970-75 Editor Journal of Research in Science Teaching.
  • 1979, 84, 86. Visiting Research Professor, Tübingen Univ. F. R. G.
  • 1985- Editorial Board: Journal of Foraminiferal Research,International Advisory Board: Marine Microbial Food Webs, Villefranche, Sur Mer.
  • 1994- Editorial Board: Symbiosis (Journal)
  • 1988-2000 Associate Editor Journal of Protozoology/ Eukaryotic Microbiology.
  • 1990-91 Faculty Seminar, Somatosensory Study Group, College of Physicians and Surgeons, Columbia University.
  • 1991-1992 Chair, Faculty Executive Committee, Columbia Univ., TC.
  • 1992-1996 Member, International Committee of Sigma Xi Sci. Society
  • 1992- Advisory Panel, Summer Research Institute for Secondary School Teachers, College of Physicians and Surgeons.
  • 1992- Panel of Reviewers Science Education (Journal)
  • 1994-96 Associate Scientist in Education, American Museum of Natural History, NYC, (Honorary).
  • 1995-2000 Committee on Education and Outreach - Columbia University
American Association for the Advancement of Science (Fellow)
American Botanical Society
American Institute of Biological Sciences
American Microscopical Society
American Society of Limnology and Oceanography
Cushman Foundation for Foraminiferal Research (Fellow)
Freshwater Biological Institute (Cumbria, Great Britain)
National Association of Biology Teachers
National Association for Research in Science Teaching
New York Academy of Sciences
Sigma Xi Scientific  Society
Society of Protozoologists
The Oceanography Society (Charter Member)
The ultrastructure of protozoan cells. Lamont Geological Observatory of Columbia University, Mar. Biol. 1965.

The effects of retinol, alpha-tocopherol, and cholesterol on the structure of lipid bilayers. Columbia University School of Engineering, Feb. 21, 1967.

The structure and stability of mixed lipid bilayers. The Rockefeller University of New York, March 24, 1967.

Lipids in cell membrane structure and function. Fordham University, New York. Oct. 12, 1967.

The structure of natural and synthetic lipid bilayers. Barnard College-Columbia University, New York, March 14, 1968.

Nucleic acids and protein biosynthesis. New York City Nutrition Bureau, NY, April 26, 1968.

Some observations on structure in teacher communicated science content based on a biopsychological
theory of communication. Sigma Delta Epsilon Science Society, New York, Jan. 1970.

Cell membrane structure - some recent research. National Science Teachers Association. Atlantic City, New Jersey, May 8, 1970.

The organization of cell membrane lipids. Chemistry Dept., Queens College of the City University of New York. Feb. 8, 1971.

Vitamin A and membranes. Chemistry Dept., City College of the City University of New York, Oct. 19, 1971.

Studies on the role of lipids in cell membrane structure and stability. West Virginia University School of Medicine. May, 1975.

A fine structure study of the life cycle in a marine diatom: Amphora coffaeformis, its cytochemical and biochemical correlate. Bermuda Biological Station, Summer, 1975.

Fine structure and cytochemical changes during resting cell formation in Amphora coffaeformis. Columbia University, Graduate Faculties of Arts and Sciences, Spring, 1976.

The role of radiolarian ectoplasm in skeletal formation and symbiont-based nutrition. Tübingen Univ. F. R. G., Nov. 1977.

Fine structure and physiological studies on radiolarian nutrition, symbiosis, and reproduction. Bellairs Research Institute of McGill Univ., St. James Barbados, Aug.1979.

The ontogeny of spumellarian skeletons and the development of the "Cytokalymma" during skeletal deposition. Tübingen University, Tübingen, F.R.G., May 1979.

The fine structure of nassellarian radiolaria possessing fine network skeletons.  Symposium on Biology and Architecture. Univ. of Stuttgart. Institut für leichte Flachentragwerke, Stuttgart, F. R. G. July, 1979.

Fine structure and physiological studies of symbiosis, skeletogenesis, and reproduction in solitary and colonial radiolaria. Woods Hole Oceanographic Institute, Woods Hole, MA. Aug., 1979.

Fine structure and physiology of radiolaria. McGill University, Autumn. 1981.

Laboratory studies of the physiological ecology of radiolaria. Caribbean Marine Biological Institute, Curaçao, Dutch West Indies, l982.

Cellular physiology and ecology of radiolaria. Bermuda Biological Station for Research. Summer, 1983.

Fine structural and physiological studies of radiolaria. University of Texas, Dallas, Texas. May 1983.

Fine structure of radiolaria. Annual Meeting of the American Society of Petroleum Geologists. Dallas, TX, May, 1983.

The biology of radiolaria. Tübingen Univ., Tübingen, F. R. G. July 3, 1984.

Cellular specialization and skeletal development in radiolaria. Zoological Institute, Leningrad. Leningrad, Russia. Oct., 1984.

Biomineralization in radiolaria: Silica secretion and ontogenetic origins of form. Keynote Paper: International Conference on Biomineralization. Univ. of Birmingham, Birmingham, England. April, 1985.

The physiological ecology of radiolaria. Southampton Univ., Southampton, England. Spring semester, 1985.

The biology and mineralized products of radiolaria. University of London, London, England. Summer Sem., 1985.

Fine structure and physiology of radiolaria. Seventh International Congress of Protozoology. Nairobi, Kenya. July 1985.

Biomineralizing marine protozoa. National Science Teachers Association. Hartford, Conn. Oct., 1985.

The biology of radiolaria: A view from the present toward the past. British Micropaleontological Society, Special Session. London, England. July, 1986.

Biomineralization in Radiolaria and other Protista, Yale University. New Haven, Conn. March 3, 1989.

A model of Scientific Literacy, Columbia University. University Seminars. March 29, 1990.

An Hierarchical-Network Model of Information Processing Applied to Science Education Knowledge Acquisition. National Association for Research in Science Teaching. Athens GA. April, 1990.

Neurocognitive Models of Information Processing, College of Physicians and Surgeons, Columbia University, May 9, 1990.

Experimental and Laboratory Studies of the Physiological Ecology of Radiolaria. Society of Protozoologists Univ. of Maryland, College Park, MD. June, 1990.

The role of Protista in Marine Food Webs. National Association of Biology Teachers.
Autumn meeting. Houston, TX. 1990.

An Interdisciplinary Conceptual Framework and Taxonomy of Thanatological Perspectives. Thanatological Society, College of Physicians and Surgeons of Columbia Univ. Feb. 13, 1991.

A triphasic Model of the Teaching-Learning Environment Based on Constructivist Principles. National Association for Research in Science Teaching. Fontana, Wisconsin, April, 1991.

The Effects of Text Composition on Student Organization of Science Content using a Hierarchical-network Model of Analysis. National Association for Research in Science Teaching. Fontana, Wisconsin, April, 1991.

The Effects of Silicate Deficiency and Replenishment on the Growth and Fine Structure of the testate amoeba Netzelia tuberculata. North eastern Meeting of the Society of Protozoologists. Hamden Conn. May, 1991.

A Fine Structural Analysis of Developmental Stages During Transformation from Sclerotium to Plasmodium in Physarum polycephalum. Society of Protozoologists. Bozeman, Montana, June, 1991.

The Effects of Cycloheximide on the Development of Physarum polycephalum During Reversion from Sclerotium to Plasmodium.
Society of Protozoologists. University of British Columbia, VanCouver, B.C. July, 1992.
Planktonic Foraminifera. Northeastern Regional Meeting of Society of Protozoologists. Oneonta, New York, 1993.

The Effects of Heat Shock on Development of Plasmodia from Sclerotia in Physarum polycephalum. Northeastern Regional Meeting of Society of Protozoologists. Oneonta, New York, June, 1993.

Ecology of Radiolaria and Water Mass Indicator Properties. IX International Congress of Protozoology. Berlin, Germany, July 24-30, 1993.

The Cytoplasmic Origin and Secretion of Siliceous Structures in Sarcodine Protists. American Institute of Biological Sciences, Ames, Iowa. August 3, 1993.

Effects of Variations in Nutritional Carbon Sources on Microscopic Morphology, Growth, Carbohydrate Content, and Isocitrate Lyase Activity of Bleached Euglena gracilis. Society of Protozoologists, North Carolina State Univ., Raleigh , N.C. May 26, 1994.

Studies of Cellular Secretion: The Effects of Caffeine on the Growth and Silica Scale
Secretion of Assulina muscorum (Rhizopoda, Testacea)
Society of Protozoologists, Cincinnati, OH. June 25, 1994.

Annual Abundances and Growth Potential of Amoebae in the Hudson Estuary. Society of Protozoologists, University of Alabama. July, 1995.

Physiological Ecology of Larger Marine Sarcodines. Biosphere 2, Oracle, Arizona. Nov. 7, 1995.

Cognitive Network Theory in Undergraduate Chemistry Education. Columbia University Graduate Dept. of Chemistry. Spring, 1996.

Observations on the ecology of some marine amoebae deserving of attention. A. Rogerson, O. R. Anderson, & F. Hanna. British Section of the Society of Protozoologists. London, England. April 12, 1996.

The Physiological Ecology of Planktonic Sarcodines. Past-President's Address. O. R. Anderson. Society of Protozoologists. Tucson, AZ June 15, 1996.

Fine Structural Correlates of Elevated Carbon Dioxide Effects on Biosphere 2 Plants.
Lamont-Doherty Observatory and Biosphere 2 (teleconference) Seminar. Jan. 24, 1997.

Abundances and diversity of gymnamoebae associated with earthworm (Lumbricus terrestris) middens in a northeastern U. S. forest. O. R. Anderson, Midwestern section, Society of Protozoologists. Michigan State Univ. April 12, 1997.

Annual abundance and diversity of terrestrial gymnamoebae in surface soil of a grassy site in northeastern U.S.A. O. R. Anderson, Eastern section, Society of Protozoologists. May 21, 1997.

The Role of Cognitive Networks in Facilitating Science Learning: Implications for Teacher Education. A. E. T. S. Northeastern Regional Meeting. Syracuse University. Oct. 16, 1997.

EarthView Explorer: An Interactive Computer-based Learning Tool for Constructivist Learning of Science Using Real Data. N. S. T. A. Northeastern Meeting, Pittsburgh, PA. Oct. 30, 1997.

Viral Infection of the Brown Tide Alga Aureococcus anophagefferens. Northeaster Algal Symposium. Plymouth, MA. April 4, 1998.

Ideational Networks and Student Knowledge of Evolution -- A Flow Map Analysis.
National Association for Research in Science Teaching. San Diego, CA. April 22, 1998.

Effects of Oil Pollution on Gymnamoebae Populations in a Northeastern Salt Marsh Habitat. Society of Protozoologists Annual Meeting. August, 1998, Flagstaff, Az.

Neurocognitive Bases for Constructivism in Education: A neurobiological, cognitive and cultural perspective. International Conference on Education and Thinking. March, 1999, Ponce, Puerto Rico.

Secondary School Students’ Preferences and Gender Differences in Evaluating Laboratory Learning Experiences in a Museum School. Annual Meeting of the National Association for Research in Science Teaching. March, 1999, Boston, MA.

Algae as Model Systems in Evolutionary Studies of Plant-hormonal Interactions, The Case of Coleochaete (Chlorophyta): Experimental Culture and Fine Structural Studies. Northeastern Algal Symposium. March, 1999, Plymouth, MA.

Ecology of Terrestrial Gymnamoeabae: A four-year study including the El Niño winter of 1997-1998. Society of Protozoologists. Raleigh, N. C. May 26-29, 1999.

Fine structural evidence for revision of the taxonomy of skeletonless colonial radiolaria, with reinstatement of the genus Collophidium. O. R. Anderson, M. Gastrich and L. Amaral Zettler. North Eastern Section Meeting of the Society of Protozoologists. Hofstra Univ., Long Island, NY. June, 1999.

A Comparative Study of Salt Marsh Gymnamoebae in Oil Polluted and Normal Environments. O. R. Anderson, et al. American Society of Microbiologists. Chicago, Ill. June, 1999.

The Influence of Instructional Video materials on Student Acquisition of Biological Concepts. M. Gostev and O. R. Anderson. Mathematics/Science Educational and Technology Annual Meeting. San Diego, California, Feb, 5-8, 2000.

Domain Specific and General Dimensions of the Nature of Science: Issues Pertinent to Assessment in Science Education. O. R. Anderson. National Association for Research in Science Teaching. New Orleans, LA, April, 2000.

Presence and Enumeration of Viral-like Particles in Aureococcus anophogefferens during a brown-tide bloom in Barnegat Bay, N. J. M. D. Gastrich and O. R. Anderson Society of Protozoologists and American Society of Parasitologists. San Juan, Puerto Rico. June, 2000.

Major Protistan Composition of a Brown Tide Bloom in Barnegat Bay, N. J. During the Summer of 1999. O. R. Anderson and M. D. Gastrich. Society of Protozoologists and American Society of Parasitologists. San Juan, Puerto Rico. June, 2000.

Leaf respiration in sweetgum: direct and indirect effects of elevated CO2, D. Tissue, J. Lewis, K. Griffin, O. R. Anderson. ESA Meetings. August 2000.

Plant Growth in Elevated CO2 Alters Mitochondrial Number and Chloroplast Fine Structure. K. Griffin, O. R. Anderson, et al. Ewing Symposium. Palisades, NY 10964. October 26, 2000.

The Columbia Earth View Explorer Computer-based Learning System: Implications for Curriculum Design and Teacher Education. O. R. Anderson. Association for the Education of Teachers in Science, NE Section. Syracuse University, Syracuse, NY. October 27, 2000.

Brown Tide Assessment Project in Barnegat Bay, NJ and the Presence of Viral-like Particles in Natural Populations of Aureococcus anophagefferens. M. Gastrich, O. R. Anderson, E. Cosper. Symposium on Harmful Marine Algae in the U. S. Woods Hole, MA. December, 2000.

Sarcodines: Niches, Survival Strategies and other Biotic Themes within a Polyphyletic Group. O. R. Anderson. American Type Culture Collection Laboratories, Manassas, VA. May 3, 2001.

A Laboratory Study of Abundances, Small-scale Patchiness, and Diversity of Gymnamoebae in Soils of Varying Organic Content. O. R. Anderson. The Soil Ecology Society Conference, Callaway Gardens, Pine Mountain, GA. May 20-23, 2001.

Abundances of Protozoa in Soil of Laboratory-grown Wheat Plants Cultivated under Low and High Atmospheric CO2 Concentrations. O. R. Anderson & K. L. Griffin. Eastern Section Meeting, Society of Protozoologists, Bryant College, Smithfield, RI. June 9-10, 2001.

Laboratory and Field-based Studies of Abundances, Small-scale Patchiness, and Diversity of Gymnamoebae in Soils of Varying Porosity and Organic Content. O. R. Anderson. Eastern Section Meeting, Society of Protozoologists, Bryant College, Smithfield, RI. June 9-10, 2001.

Amoeboid Protist Communities: Assessing Patterns in Space and Time – Implications for Biocomplexity. O. Roger Anderson. Meadowlands Environmental Research Institute, Rutgers University, New Jersey, Oct. 19, 2001.

An Analysis of the Protistan Composition of Brown Tide Communities during Algal Blooms in Barnegat Bay, N.J., 1999-2001. O. Roger Anderson and M. D. Gastrich. New England Algal Symposium Annual Meeting. University of New Hampshire, Durham, N. H. April 19-21, 2002.

A Biocomplexity Model of Protistan Communities in Soils and Marsh Substrata with an Emphasis on the Sarcodines. Society of Protozoologists, Eastern Section Annual Meeting. Montgomery College, Rockville, MD. May 7-9, 2002.

Biotic Complexity, Niche Theory, and the Role of Stress in Eukaryotic Microbial Community Structure - A Focus on Amoeboid Protists. Society of Protozoologists, Eastern Section Annual Meeting. University of Maryland, Baltimore, June 6—8, 2003.

Experimental Studies of the Relative Effects of Leaf Litter from Four Hardwood Trees on Protozoan Community Productivity. Annual Meeting of the Society of Protozoologists. Bryant College, Rhode Island. June 2-6, 2004.

Analysis of a virus-like particle associated with the lysis of the brown tide forming alga, Aureococcums anophagefferens. Rowe, J M ; Dunlap, J R ; Gobler, C J ; Gastrich, M D ; Anderson, O R ; Wilhelm, S W. American Society of Limnology and Oceanography. Santiago de Compostela, Spain. June 19-24, 2005.

Environmental and biological factors influencing the ability of viruses to lyse the harmful brown tide pelagophyte, Aureococcus anophagefferens. Gobler, C J ; Pererya, P ; Gastrich, M ; Anderson, O R ; Wilhelm, S W. American Society of Limnology and Oceanography. Santiago de Compostela, Spain. June 19-24, 2005.

Laboratory Microcosm Studies of Abundance and Diversity of Protists in Response to Salinity Changes Simulating Tidal Forcing at A Location Within the Critical Salinity Zone (ca. 8 ppt) of the Hudson Estuary. O.
R, Anderson. Society of Protozoologists, Northeastern Section Meeting. Virginia Medical College of Virginia (Virginia Commonwealth University). June 3-5, 2005.

A Method for Estimating Volume-based Carbon Content Of Amoebae: Application to the Fractional Analysis of Carbon in Amoebae within Some Aquatic and Terrestrial Communities. Society of Protozoologists, Northeastern Section Meeting. Russell-Sage College. New York June 6-8, 2006.

The Role of amoeboid protists and the microbial community in moss-rich terrestrial ecosystems: Biogeochemical implications for the carbon budget and carbon cycle, especially at higher latitudes. International Society of Protistologists, Annual Meeting, Kingston, R. I. August, 2007.

Microbial communities associated with the rhizosphere of the invasive fern Thelypteris novaboracensis (L.) widely distributed in eastern N. America from N. E. Canada to southeastern U. S. A.: Issues in Above Ground – Below Ground Coupling. Joint Meeting: International Society of Protistologists and International Society for
Experimental Protistology, Halifax, N. S. July 2008.

Field and Laboratory Studies of Encysted and Trophic stages of Naked Amoebae: Including a Perspective on Population Life Cycle Dynamics. International Society of Protistologists. Roger Williams University, Rhode Island. Spring, 2009.

Resistance to Protist Grazing: A Driving Force in the Evolution of Legionella pneumophila. W. Wang, S. P. Faucher, K. Bi, O. R. Anderson, F. Amaro and H. Shuman. American Society for Microbiology. New Orleans, May, 2011.

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