Planktology (marine microplankton)

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Dr. Demetrio Boltovskoy (Director, Associate Professor FCEyN, UBA, Principal Investigator CONICET; Director of the Laboratory of Foraminífera of the MACN; demetrio@bg.fcen.uba.ar)
Dr. Viviana A. Alder (Staff Researcher of the Argentine Antarctic Institute and CONICET; viviana@bg.fcen.uba.ar)
Lic. Nancy M. Correa (Head of the Biology Department of the Argentine Naval Hydrographic Service)
Lic. Daniel Cataldo (Professional Technical Assistant, CONICET; Postgraduate student, UBA; daniel@bg.fcen.uba.ar)
Lic. Mariela Kogan (Postgraduate Student, CONICET; magu@teletel.com.ar; mkogan@inidep.edu.ar)
Lic. Valeria Marini (Postgraduate Student, ANPCYT; vmarini@bg.fcen.uba.ar)
Ms. Aurora Michiko Matsubara (Associate Technical Assistant CONICET, MACN)
Lic. Héctor Olguín (Teaching Assistant and postgraduate student, UBA; holguin@bg.fcen.uba.ar)
Lic. Gustavo Thompson (Teaching Assistant and postgraduate student, UBA; fellow CONICET; gustavo@bg.fcen.uba.ar)
Lic. Violeta Totah (Researcher , MACN)
Prof. Silvia Watanabe (Professional Technical Assistant, CONICET, MACN; watanabe@muanbe.gov.ar)

CONICET: Consejo Nacional de Investigaciones Científicas y Técnicas; FCEyN: Facultad de Ciencias Exactas y Naurales; MACN: Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; UBA: University of Buenos Aires

Laboratories 36 and 37 (Planktology), Facultad de Ciencias Exactas y Naturales, Ciudad Universitaria de Núñez, Pabellón 2, Piso 4; phone: 54-11-4576-3300, ext. 248; fax: 54-11-4576-3384
Laboratory of Foraminífera, Museo Argentino de Ciencias Naturales "Bernardino Rivadavia", Av. Angel Gallardo 470, 1405 Buenos Aires, Argentina (TE: 4982-6670).


Research interests

  • Distribution and ecology of marine microzooplankton
  • Horizontal and vertical distribution of microzooplankton in various oceanic areas (Southern Ocean, Southwestern and tropical Atlantic, north Pacific, Arctic Ocean). Relationships with water-masses. Biogeographic patterns, expatriation, seasonal cycles, trophic relationships, abundance and biomass. Vertical flux and sedimentation rates of fossilizable microzooplankton on the basis of sediment trap materials (easter tropical Atlantic); plankton-sediment traps-surface sediments similarities in species assemblages. Paleoclimatic interpretations of the fossil record. Holocene - latest Pleistocene pelagic paleoecology on the basis of species-specific radiolarian (polycystine) assemblages. The groups most intensively covered in these studies are polycystine radiolarians and tintinnids; heterotrophic dinoflagellates, naked ciliates, phaeodarians, cysts, silicoflagellates, pteropod molluscs, etc. are also covered in ecologically oriented surveys.

    D. Boltovskoy, V. Alder, S. Watanabe, M. Matsubara, H. Olguín, G. Thompson y N. Correa are involved in these studies, which are conducted in collaboration with several Argentine, American, European and Brazilian colleagues.


  • Systematics of selected microzooplanktonic groups
  • Antarctic tintinnids and polycystine radiolarians. Systematics, intraspecific variability, geographic specific distribution patterns, numerical taxonomy. V. Alder y G. Thompson: tintinnids; S. Watanabe, V. Totah, M. Matsubara: foraminifers; H. Olguín: diatoms; D. Boltovskoy: rads.


  • Ecology of invasive Asiatic bivalve molluscs (Corbicula fluminea, Limnoperna fortunei) in the Río de La Plata river and lower delta of the Paraná river
  • Abundance, feeding, reproduction and recruitment, survival, dispersion, and usefulness as a biological monitor of pollution by heavy metals and organic pesticides of invasive freshwater molluscs. Monthly samplings at several locations in the lower delta of the Paraná river and in the upper reaches of the Río de La Plata estuary are used for the assessment of growth patterns and recruitment, bioaccumulation of contaminants, fertility, etc. In addition, in situ growth of caged individuals at all locations is used as evidence of ambient fitness and potential effects of toxic materials on the biology of the mollusc. Control measures to curb growth of L. fortunei in industrial installations (D. Boltovskoy, D. Cataldo y N. Correa, M. Matsubara).



    Selected publications

    Marine plankton (books edited)

    Boltovskoy D. (Editor). 1981. Atlas del Zooplancton del Atlántico Sudoccidental y métodos de trabajo con el zooplancton marino. Publicación Especial del Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP), Mar del Plata, Argentina, pp. I-XXX + 1-938.

    Boltovskoy D. (Editor). 1999. South Atlantic Zooplankton. Backhuys Publishers, Leiden, pp. i-xvi + 1-1706. (ISBN 90-5782-035-8).


    Marine plankton (journal and book articles)

    Boltovskoy, D. 1971. Pterópodos thesosomados del Atlántico Sudoccidental. Malacologia, 11(1):121-140.

    Boltovskoy, D. 1974. Study of surface shell structures in Thecosomata (Pteropoda: Mollusca), by means of scanning electron microscopy. Marine Biology, 27(2):165-172.

    Boltovskoy, D. 1975. Some biometrical, ecological, morphological and distributional aspects of chaetognatha. Hydrobiologia, 46(4):515-534.

    Boltovskoy, D. 1975. Ecological aspects of zooplankton (Foraminifera, Pteropoda and Chaetognatha) of the Southwestern Atlantic Ocean. The Veliger, 18(2):203-216.

    Boltovskoy, D. 1979. Zooplankton of the south-western Atlantic. South African Journal of Science, 75(12):541-544.

    Boltovskoy, D., Riedel, W.R. 1980. Polycystine Radiolaria from the Southwestern Atlantic ocean plankton. Revista Española de Micropaleontología, 12(1):99-146.

    Boltovskoy, D. 1982. Variación latitudinal de la diversidad zooplanctónica en el Atlántico Sudoccidental. Physis, Secc. A, 41(100):1-6.

    Dadón, J.R., Boltovskoy, D. 1982. Zooplanktonic recurrent groups (Pteropoda, Euphausiacea and Chaetognatha) in the Southwestern Atlantic ocean. Physis, Secc. A, 41(100):63-83.

    Boltovskoy, D, Bender Kotzian, S., Pedrozo, F.L. 1983. Some new techniques for the preparation and illustration of Polycystina (Radiolaria). Micropaleontology, 29(4):382-390.

    Boltovskoy, D., Jankilevich, S.S. 1985. Radiolarian distribution in east equatorial Pacific plankton. Oceanologica Acta, 8(1):101-123.

    Boltovskoy, D. 1986. Biogeography of the Southwestern Atlantic: current problems and prospects. In: Pelagic biogeography, Proceedings of an International Conference, The Netherlands, 29 May - 5 June 1985. Edited by A.C. Pierrot-Bults, S. Van der Spoel, B.J. Zahuranec y R.K. Johnson, UNESCO Technical Papers in Marine Science, No. 49, UNESCO Press, pp. 14-24.

    Boltovskoy, D., Riedel, W.R. 1987. Polycystine Radiolaria of the California Current region: seasonal and geographic patterns. Marine Micropaleontology, 12(1):65-104.

    Boltovskoy, D. 1987. Sedimentary record of radiolarian biogeography in the equatorial to Antarctic western Pacific Ocean. Micropaleontology, 33(3):267-281.

    Boltovskoy, D. 1988. The range through method and first-last appearance data in paleontological surveys. Journal of Paleontology, 62(1):157-159.

    Boltovskoy, D., Alder, V.A. 1988. Estimates of microplanktonic biomass in Antarctic near-surface waters: the effects of wind. Polar Biology (Internacional, Alemania), 8(4):397-399.

    Boltovskoy, D. 1988. Equatorward sedimentary shadows of near-surface oceanographic patterns. Speculations in Science and Technology, 11(3):219-232.

    Boltovskoy, E., Boltovskoy, D. 1988. Cenozoic deep-sea benthic Foraminifera: turnovers and between-site correlations. Revue de Micropaléontologie, 31(2):67-84.

    Boltovskoy, D., Vrba, A. 1988. Classification and geographic distribution of Stylodictya - type radiolarians. Micropaleontology, 34(4):362-370.

    Boltovskoy, D., Vrba, A. 1989. Latitute-related shell patterns in Radiolaria: Botryostrobus auritus/australis morphotypes in the equatorial to Antarctic Pacific. Marine Micropaleontology, 13(4):309-323.

    Boltovskoy, D. 1989. Radiolarian record of the last 40,000 years in the western equatorial Pacific. Oceanologica Acta, 12(1):79-86.

    Boltovskoy, D., Alder, V.A., Spinelli, F. 1989. Summer Weddell Sea microplankton: assemblage structure, distribution and abundance, with special emphasis on the Tintinnina. Polar Biology, 9:447-456.

    Boltovskoy, E., Boltovskoy, D. 1989. Paleocene-Pleistocene benthic foraminiferal evidence of major paleoceanographic events in the eastern south Atlantic (DSDP Site 525, Walvis Ridge). Marine Micropaleontology, 14:283-316.

    Boltovskoy, D., Dinofrio, E., Alder, V.A. 1990. Environmental influence on intraspecific variability in Antarctic tintinnids: Cymatocylis affinis/convallaria in Weddell Sea waters. Journal of Plankton Research, 12(2):403-413.

    Alder, V.A., Boltovskoy, D. 1991. Microplanktonic distributional patterns west of the Antarctic Peninsula, with special emphasis on the tintinnids. Polar Biology, 11(2):103-112.

    Boltovskoy, D. 1991. Holocene-upper Pleistocene radiolarian biogeography and paleoecology of the equatorial Pacific. Palaeogeography, Palaeoclimatology, Palaeoecology, 86:227-241.

    Boltovskoy, D., Vivequin, S.M., Swanberg, N.R. 1991. Vertical distribution of tintinnids and associated microplankton in the upper layer of the Barents Sea. Sarsia, 76:141-151.

    Alder, V.A., Boltovskoy, D. 1991. The ecology and biogeography of tintinnid ciliates in the Atlantic Sector of the Southern Ocean. Marine Chemistry, 35(1-4):337-346.

    Boltovskoy, D., Alder, V.A. 1992. Microzooplankton and tintinnid species-specific assemblage structures: patterns of distribution and year-to-year variations in the Weddell Sea (Antarctica). Journal of Plankton Research, 14:1405-1423.

    Boltovskoy, D. 1992. Current and productivity patterns in the equatorial Pacific across the last glacial maximum based on radiolarian east-west and downcore faunal gradients. Micropaleontology, 38(4):1-18.

    Boltovskoy, D., Alder, V.A. 1992. Paleoecological implications of radiolarian distribution and standing stocks vs. accumulation rates in the Weddell Sea. The Antarctic Paleoenvironment: A Perspective on Global Change (J.P. Kennet & D.A. Warnke, eds.), Antarctic Research Series, 56:377-384, American Geophysical Union.

    Alder, V.A., Boltovskoy, D. 1993. The ecology of microzooplankton in the Weddell-Scotia confluence area: horizontal and vertical distribution patterns. Journal of Marine Research, 51(2):323-344.

    Boltovskoy, D., Alder, V.A., Abelmann, A. 1993. Radiolarian sedimentary imprint in Atlantic equatorial sediments: comparison with the yearly flux at 853 m. Marine Micropaleontology, 23(1):1-12.

    Boltovskoy, D., Alder, V.A., Abelmann, A. 1993. Annual flux of Radiolaria and other shelled plankters in the eastern equatorial Atlantic at 853 m: seasonal variations and Polycystine species-specific responses. Deep-Sea Research, 40(9):1863-1895.

    Boltovskoy, D. 1994. The sedimentary record of pelagic biogeography. Progress in Oceanography, 34:135-160.

    Kling, S.A., Boltovskoy, D. 1995. Radiolarian vertical distribution patterns across the southern California Current. Deep-Sea Research, 42(2):191-231.

    Lange, C.B., Boltovskoy, D. 1995. Trampas de sedimento. "Manual de métodos ficológicos" (K. Alveal, M.E. Ferrario, E.C. Oliveira, E. Zar, eds.), Universidad de Concepción, Concepción, Chile, pp. 93-118.

    Boltovskoy, D., Swanberg, N.R., Vivequin, S.M. 1995. Tintinnids and other microplankton from the Greenland Sea: abundance and distribution in the Marginal Ice Zone (May-June 1989). Marine Ecology (P.S.Z.N.), 16(2):1-15.

    Boltovskoy, D., Oberhaensli, H., Wefer, G. 1996. Radiolarian assemblages in the eastern tropical Atlantic: patterns in the plankton and in sediment trap samples. Journal of Marine Systems, 8(1/2):31-51.

    Boltovskoy, E., Boltovskoy, D., Correa, N. Brandini, F. 1996. Planktonic foraminifers from the Southwestern Atlantic (30 to 60°S): species-specific patterns in the upper 50 m. Marine Micropaleontology, 28:53-72.

    Anderson, R.O., Nigrini, N., Boltovskoy, D., Takahashi, K. 1995 (in press). Radiolaria. In: "An Illustrated Guide to the Protozoa" (Second Edition), J. Lee, editor.

    Boltovskoy, D., Uliana, E., Wefer, G. 1996. Seasonal variations in the flux of microplankton and radiolarian assemblage compositions in the northeastern tropical Atlantic at 2195 m. Limnology & Oceangraphy, 41(4):615-635.

    Olguín, H., C. Lange y F. Brandini. 1997. Distribución de las Diatomeas en el Atlántico Sudoccidental: Resultados Preliminares. Resúmenes expandidos VII Congreso Latinoamericano sobre Ciencias del Mar (COLACMAR). Santos, San Pablo, Brasil: 231-232

    Boltovskoy, D. 1998. Classification and Distribution of South Atlantic Recent Polycystine Radiolaria. Palaeontologia Electronica, 1(2): 116 pp., 2.5 MB. http://www-odp.tamu.edu/paleo/1998_2/boltovskoy/issue2.htm.

    Boltovskoy, D. 1998. Pelagic biogeography: background, gaps and trends. "Pelagic Biogeography ICoPB II" (IOC Wks. Rep. 142), (A.C. Pierrot-Bults, S. van del Spoel, eds.), pp. 53-64.

    Thompson, G.A., Alder, V.A., Boltovskoy, D., Brandini, F. 1999. Abundance and biogeography of tintinnids (Ciliophora) and associated microzooplankton in the Southwestern Atlantic Ocean. Journal of Plankton Research, 21(7):1265-1298.

    Boltovskoy, D., Gibbons, Mark J., Hutchings, L., Binet, D. 1999. General biological features of the South Atlantic. "South Atlantic Zooplankton" (D. Boltovskoy, ed.), Backhuys Publishers, Leiden, pp. 1-42. 5.

    Boltovskoy, D. 1999. Radiolaria Polycystina. "South Atlantic Zooplankton" (D. Boltovskoy, ed.), Backhuys Publishers, Leiden, pp. 149-212.

    Kling, S.A., Boltovskoy, D. Radiolaria Phaeodaria. 1999."South Atlantic Zooplankton" (D. Boltovskoy, ed.), Backhuys Publishers, Leiden, pp. 213-264.

    Bernstein, R., Kling, S.A., Boltovskoy, D. Acantharia. 1999."South Atlantic Zooplankton" (D. Boltovskoy, ed.), Backhuys Publishers, Leiden, pp. 75-147.

    Boltovskoy, E., Boltovskoy, D., Brandini, F. In press. Planktonic Foraminifera from Southwestern Atlantic epipelagic waters: abundance, distribution and year-to-year variations. Journal of the Marine Biological Association of the United Kingdom.

    Brandini, F., Boltovskoy, D., Piola, A., Kocmur, S., Röttgerns, R., Abreu, P.C. In press (June 2000). The effects of fronts on the distribution of nutrients and chlorophyll in the Southwestern Atlantic between 30 and 62°S. Deep Sea Research, 47(6):1015-1033.

    Boltovskoy, D. In press. Diversidad y biogeografía del zooplancton del Atlántico Sur. Anales de la Academia Nacional de Ciencias Exactas, Físicas y Naturales, Buenos Aires, Argentina.

    Boltovskoy, D. 1996. Calentamiento global, el océano y el plancton. Ciencia e Investigación (Buenos Aires), 47:4-15. Republished in 1997 in Interscientia, 2(1) [http://aix1.uottawa.ca/publications/interscientia/inter.3/clima/clima.html] (Popular article)

    Alder, V.A., Thompson, G.A. Spatial and temporal distribution of tintinnids (Protozoa, Ciliata) in relation to frontal systems and the general hydrologic dynamics of the Southern Ocean (SW Atlantic Sector; 50°-64°S, 65°-49°W). In press VII SCAR Symposium Proceeding.

    Bordino P., Thompson G., Iniguez M. 1999. Ecology and behaviour of the franciscana (Pontoporia blainvillei) in Bahia Anegada, Argentina. Journal of Cetacean Research and Management, 1(2), 213-222.

    Volpedo, A.V., G. Thompson. (1998) 1996. Diferencias en el crecimiento de las sagittae de Prionotus nudigula Ginsburg, 1950 (Pisces: Triglidae) en relacion al sexo. Bol. Inst. Esp. Oceanogr., 12(1):3-16


    Limnology, molluscs

    Boltovskoy, D., Vélez, G. 1983/1984. A simple and inexpensive device for rigging light-and-dark bottle castings. Acta Hydrobiologica, 25/26(1):117-119.

    Boltovskoy, D., Pedrozo, F.L., Battistoni, P.A. 1984. The effects of wind and diel vertical migrations on the distribution of freshwater zooplankton. Studies on Neotropical Fauna and Environment, 19(3):137-154.

    Boltovskoy, D., Pedrozo, F.L., Mazzoni, H.E., Díaz, M. 1985. Effects of net, pump and bottle sampling on the abundance estimates of planktonic Rotifera. Journal of Plankton Research, 7(2):295-302.

    Boltovskoy, D., Mazzoni, H.E. 1988. The effects of sampling gear and environmental conditions on the abundance estimates of zooplankton. Revue d'Hydrobiologie Tropicale, 21(1):21-34.

    Boltovskoy, D., Izaguirre, I., Correa, N. 1995. Feeding selectivity of Corbicula fluminea (Bivalvia) on natural phytoplankton. Hydrobiologia, 312:171-182.

    Olguín, H. F. y P. E. Domínguez. 1995. Corrientes, turbulencia y distribución de las algas dominantes en el Sector Poniente del Embalse Peñuelas (Valparaíso, Chile). An. Mus. Hist. Nat. Valpso. 23: 5 - 20.

    Boltovskoy, D., Correa, N., Cataldo, D., Stripeikis, J., Tudino, M. 1997. Environmental stress on Corbicula fluminea (Bivalvia) in the Paraná river delta (Argentina): complex pollution-related disruption of population structures. Archiv für Hydrobiologie, 138(4):483-507.

    Cataldo, D., Boltovskoy, D. 1998. Population dynamics of Corbicula fluminea (Bivalvia) in the Paraná river delta (Argentina). Hydrobiologia, 380(1/2):153-163.

    de Cabo, L., S. Arreghini, A. Puig y H. F. Olguín. 1998. Caracterización fisicoquímica y del plancton del Bajo Delta del Río Paraná. Rev. Mus. Arg. Cs. Nats., Ser. Hidrobiol., VIII (1): 1 - 14

    de Cabo, L., A. Puig, S. Arreghini, H. F. Olguín, R. Seoane & I. Obertello. 1999. Physicochemical parameters and plankton in the Lower Delta of the Paraná River in relation with flow. Manaus 99. Hydrological and Geochemical Processes in Large Scale River Basins: 1 - 7.

    Boltovskoy, D., Cataldo, D. 1999. Population dynamics of Limnoperna fortunei, an invasive fouling mollusc, in the lower Paraná river (Argentina). Biofouling, 14(3):255-263.

    Cataldo, D., Boltovskoy, D. In press. Yearly reproductive activity of Limnoperna fortunei (Bivalvia) as inferred from the occurrence of its larvae in the plankton of the lower Paraná river and the Río de la Plata estuary (Argentina). Aquatic Ecology.

    Cataldo, D., Colombo, J.C., Boltovskoy, D., Bilos, C., Landoni, P. In press. Environmental toxicity assessment in the Paraná river delta (Argentina): simultaneous evaluation of selected pollutants and mortality rates of Corbicula fluminea (Bivalvia) juveniles. Environmental Pollution.

    Correa, N., Boltovskoy, D. 1998. Las invasiones biológicas. Componente ignorado del cambio global. Ciencia e Investigación, 51(1/2):4-14. (Popular article)

    Castañé, P. M., C. R. Loez, H. Olguín, A. Puig, M. G. Rovedatti, M. L. Topalián y A. Salibián. 1998. Caracterización y variación espacial de parámetros fisicoquímicos y del plancton en un río urbano contaminado. Rev. Int. Contam. Ambient. 14 (2): 69 - 77.

    Olguín, H., Salibián, A. and Puig, A. 2000 Comparative sensitivity of Scenedesmus acutus and Chlorella pyrenoidosa as sentinel organisms for aquatic ecotoxicity assessment: studies on a highly polluted urban river. Enviromental Toxicology 15 (1): 14-22.

    UPDATED: April 2000

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