Effects of Beroe cf ovata on gelatinous and other zooplankton along the Bulgarian Black Sea Coast

  • Lyudmilla Kamburska
Part of the Nato Science Series: IV: Earth and Environmental Sciences book series (NAIV, volume 35)


Our study revealed a high inter-annual variability of the mesozooplankton and of Mnemiopsis after the arrival of Beroe ovata. The period 1998–2001 can be considered as transitional, with the zooplankton still vulnerable to Mnemiopsis predation pressure and under adjustment to the new prey-predator couple Beroe-Mnemiopsis. Mnemiopsis decreased relatively compared to the period before Beroe(1994–1996), which could be attributed to control by B. cf ovata after 1998. Despite this inter-annual variability, the recent features of mesozooplankton performance, viz. species number, numerical abundance and biomass, show signs of recovery. These are widely believed to reflect a reduced top-down control by Mnemiopsis. Still, Mnemiopsis remains a key control on zooplankton growth, especially in summer, as illustrated by our PCA analysis.


Mnemiopsis Beroe Black Sea Bulgarian coast predator-prey relationship 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Buecher, E., 2001. Erratic fluctuations in abundance of medusoid and ctenophore populations in two systems, Ligurian Sea and Benguela ecosystem: some examples. CIESM Workshop Series “Gelatinous zooplankton outburst: theory and practice”, Naples, Italy, 29 August-1st September n.14, 63–66.Google Scholar
  2. Cameron, P., J. Berg & H. von Westernhagen, 1996. Biological effects monitoring of the North Sea emplying fish embryological data. Journal of Environmental Monitoring and Assessment 40: 107–124.Google Scholar
  3. Carpenter, S. R. & K. L. Cottingham, 1997. Resilience and restoration of lakes. Conservation Ecology 1, 2.Google Scholar
  4. GESAMP, 1997. Opportunistic settlers and the problem of the ctenophore Mnemiopsis leidyi invasion in the Black Sea. Reports and studies 58, pp.50.Google Scholar
  5. Gordina, A. D., E. V. Pavlova, E. I. Ovsyany, J. G. Wilson, R. B. Kemp & A. S. Romanov, 2002. Long-term changes in Sevastopol Bay (the Black Sea) with particular reference to Ichthyoplankton and zooplankton. Estuarine, Coastal and Shelf Sciences 52: 1–13.Google Scholar
  6. Finenko, G. A., B. E. Anninsky, Z. A. Romanova, G. I. Abolmasova & A. E. Kideys, 2001. Chemical composition, respiration and feeding rates of the new alien ctenophore, Beroe ovata in the Black Sea. Hydrobiologia 451: 177–186.CrossRefGoogle Scholar
  7. Finenko, G. E., Z. A. Romanova & G. I. Abolmasova, 2000. The ctenophore Beroe ovata is a new invader to the Black Sea. Ecologiya Morya 50: 19–22 (in Russian).Google Scholar
  8. Finenko, G. A., Z. A. Romanova, G. I. Abolmasova, B. E. Anninsky, L. S. Svetlichny, E. S. Hubareva, L. Bat & A. E. Kideys, 2003. Ingestion, growth and reproduction rates of the alien Beroe ovata and its impact on plankton community in Sevastopol Bay (the Black Sea). Journal of Plankton Research (in press).Google Scholar
  9. Fraser, H. F., 1962. The role of Ctenophores and salps in zooplankton production and standing crop. Rapports et Proces verbaux des Reunions du Conseil permanent International pour l’ Exploration de la Mer 153: 121–123.Google Scholar
  10. Kamburska, L., S. Moncheva, A. Konsulov, A. Krastev & K. Prodanov, 2002. The invasion of Beroe ovata in the Black Sea-why a warning for ecosystem concern? Oceanology, IO-BAS, v. 4 (in press).Google Scholar
  11. Kideys, E. A., 1994. Recent dramatic changes in the Black Sea ecosystem: the reason for the sharp decline in turkish Anchovy fisheries. Journal of Marine Systems 5:171–181.CrossRefGoogle Scholar
  12. Kideys, E. A., A. V. Kovalev, G. Shulman, A. Gordina & F. Bingel, 2000. A review of zooplankton investiga-tions of the Black Sea over the last decade. Journal of Marine Systems 24: 355–375.CrossRefGoogle Scholar
  13. Kideys, A. E. & M. Moghim, 2003. Distribution of the alien ctenophore Mnemiopsis leidyi in the Caspian Sea in August 2001. Marine Biology 142: 163–171.Google Scholar
  14. Kideys, E. A., 2002. Fall and rise of the Black Sea ecosystem. Science 297: 1482–1483.PubMedCrossRefGoogle Scholar
  15. Konsulov, A. & L. Kamburska, 1998. Black Sea zooplankton structural dynamic and variability off the Bulgarian Black Sea coast during 1991–1995. NATO ASI Series, 2. Environment-vol.2/27, “Ecosystem Modeling as a Management Tool for the Black Sea, Symposium on Scientific Results”, L. Ivanov & T. Oguz (eds), v.1, (Kluwer Academic Publishers), 281–293.Google Scholar
  16. Konsulov, A. & L. Kamburska, 1998a. Ecological determination of the new Ctenophora-Beroe ovata invasion in the Black Sea, Oceanology, IO-BAS 2: 195–198Google Scholar
  17. Kremer, P., 2001. Opportunistic lifestyle of the gelatinous and abundant: what dives a species “the right stuff”? CIESM Workshop Series “Gelatinous zooplankton outburst: theory and practice”, Naples, Italy, 29August-1st September, n.14, 87–92.Google Scholar
  18. Malashev, V. I. & A. G. Archipov, 1992. The Ctenophore Mnemiopsis leidyi in the West Part of the Black Sea. Hydrobiologichkyi Zhurnal IBSS 28: 34–39.Google Scholar
  19. Mee, L., 1992. The Black Sea in crisis: A need for concerted international action. Ambio 21:278–286.Google Scholar
  20. Moncheva, S., Doncheva, V. & L. Kamburska, 2000. On the long-term response of harmful algal blooms to the evolution of eutrophication off the Bulgarian Black Sea coast: are the recent changes a sign of recovery of the ecosystem-the uncertainties. In: Proceedings of IX International conference on “Harmful Algal Blooms”, Hobart, Tasmania; G. M. Hallegraff et al., (eds), (UNESCO-IOC, Paris, 2001), pp. 177–182.Google Scholar
  21. Moncheva, S. & L. Kamburska, 2002. Plankton stowaways in the Black Sea-Impacts on biodiversity and ecosystem health. CIESM, 2002. Alien marine organisms introduced by ships in the Mediterranean and Black Seas. CIESM Workshop Monographs 20: 47–53.Google Scholar
  22. Mutlu, E., 1999. Distribution and abundance of ctenophores and their zooplankton food in the Black Sea. 2. Mnemiopsis leidyi. Marine Biology 135: 603–613.Google Scholar
  23. Nelson, T. C., 1925. On the occurrence and food habits of ctenophores in the New Jersey inland coastal waters. Biological Bulletin 48: 92–111.Google Scholar
  24. Niermann, U., A. E. Kideys, A. V. Kovalev, V. Melnikov & V. Belokopytov, 1999. Fluctuations of pelagic species of the open Black Sea during 1980–1995 and possible teleconnections. In: Environmental Degradation of the Black Sea: Challenges and Remedies, NATO ASI Series, 2. Environmental Security, v. 56, Besiktepe, S., Unluata, U. & A. Bologa, eds (Kluwer Academic Publishers), pp. 147–175.Google Scholar
  25. Oguz, T., H. W. Ducklow, J. E. Purcell & P. Malanotte-Rizzoli, 2001. Simulation of recent changes in the Black Sea pelagic food web structure due to top-down control by gelatinous carnivores. Journal of Geophysical Research 106: 4543–4564.CrossRefGoogle Scholar
  26. Petipa, T. S., 1959. On average weight of main forms of zooplankton. Studies of Sebastopol Biological Station 5, pp. 13.Google Scholar
  27. Prodanov, K., S. Moncheva, A. Konsulov, L. Kamburska, T. Konsulova & K. Dencheva, 2001. Recent Ecosystem Trends along the Bulgarian Black Sea Coast. Oceanology 10: 110–128.Google Scholar
  28. Purcell J. E., T. A. Shiganova, M. B. Decker & E. D. Houde, 2001. The ctenophore Mnemiopsis in native and exotic habitats: U.S. estuaries versus the Black Sea basin. Hydrobiologia 451: 145–176.Google Scholar
  29. Reeve, M., M. Syms & P. Kremer, 1989. Growth dynamics of a Ctenophore (Mnemiopsis) in relation to variable food supply. I. Carbon biomass, feeding, eggs production, growth and assimilation effi ciency. Journal of Plankton Research 11: 535–552.Google Scholar
  30. Seravin, L. N., T. A. Shiganova & N. E. Luppova, 2002. Investigation History of Comb Jelly Beroe Ovata (Ctenophora, Atentaculata, Beroida) and Certain Structural Properties of Its Black Sea Representative, Zoologichetskyi Zhurnal 81: 1193–1201.Google Scholar
  31. Shiganova, T. A., 1997. Mnemiopsis leidyi abundance in the Black Sea and its impact on the pelagic community. NATO ASI Series, 2. Environment-vol.2/27, “Ecosystem Modeling as a Management Tool for the Black Sea, Symposium on Scientific Results”, L. Ivanov & T. Oguz (eds), v. 1, (Kluwer Academic Publishers), 117–129.Google Scholar
  32. Shiganova, T. A., Y. V. Bulgakova, S. P. Volovik, Z. A. Mirzoyan & A. I. Dudkin, 2001. The new invader Beroe ovata Mayer 1912 and its effect on the ecosystem in the north eastern Black Sea. Hydrobiologia 451: 187–197.CrossRefGoogle Scholar
  33. Shiganova, T. A., Z. A. Mirzoyan, E. A. Studenikina, S. P. Volovik, I. Siokou-Frangou, S. Zervoudaki, E. D. Christou, A. Y. Skirta & H. J. Dumont, 2001a. Population development of the invader ctenophore Mnemiopsis leidyi, in the Black Sea and other seas of the Mediterranean basin. Marine Biology 139: 431–445.Google Scholar
  34. Shiganova, T. A., A. M. Kamakin, O. P. Zhukova, V. B. Ushitsev, A. B. Dulimov & E. I. Musaeva, 2001b. The invader into the Caspian Sea Ctenophore Mnemiopsis and its initial effect on the pelagic ecosystem. Oceanology (Russia) 41: 517–524.Google Scholar
  35. Stanners, D. & P. Boudreau, 1995. Europe’s environment: the Dobris assessment. European Environment Agency Task Force. Newsletter 5, ISBN 92-826-5409-5; ECU: 55.Luxembourg: Office for official publications of the EC.Google Scholar
  36. Swanberg, N., 1970. The feeding behavior of Beroe ovata. Marine Biology 24: 69–76.Google Scholar
  37. Vinogradov, M. E, E. A. Shushkina, E. I. Musaeva & P. Y. Sorokin, 1989. Ctenophore Mnemiopsis leidyi (A. Agassiz) (Ctenophora: Lobata)-New settlers in the Black Sea. Oceanology, Institute of Oceanology 29: 293–299, Moskva.Google Scholar
  38. Vinogradov, M. E. & N. Tumantseva, 1993. Intergovermental Oceanographic Commission, no. 3, UNESCO, (Paris), 80–91.Google Scholar
  39. Vinogradov, M. E, E. A. Shushkina & S. V. Vostokov, 2001. Gelatinous macroplankton (Jellyfi sh Aurelia aurita, ctenophores Mnemiopsis leidyi and Beroe ovata) in the Black Sea ecosystem (Important aspects for the Caspian Sea modern ecology). Abstracts, Caspian Environmental Programme (CEP) Mnemiopsis Advisory Group First Workshop, Baku, December, 2001.Google Scholar
  40. Weisse, T. & M. T. Gomoio, 2000. Biomass and size structure of the scyphomedusa Aurelia aurita in the northwestern Black Sea during spring and summer. Journal of Plankton Research 22: 223–239.CrossRefGoogle Scholar
  41. Zaitzev, Y. & V. Mamaev, 1997. Biological diversity in the Black Sea-A study of change and decline/GEF, Black Sea Environmental series, vol. 3, pp. 208.Google Scholar
  42. Zaitzev, Y., 1992. Recent changes in the trophic structure of the Black Sea. Fisheries Oceanography 1: 180–189.Google Scholar

Copyright information

© Kluwer Academic Publishers 2004

Authors and Affiliations

  • Lyudmilla Kamburska
    • 1
  1. 1.Institute of OceanologyBASVarnaBulgaria

Personalised recommendations