Abstract
The difficulty in advancing in Ecology is due, in part, to the fact that this science uses a mainly qualitative language instead of a more formal or mathematical one. Therefore, many ecologists’ efforts are expended in controversies resulting from the vagueness of ecological concepts, for example: stability, equilibrium, ecosystem, community, and so on. When approaching the study of steady-state phytoplankton assemblage, the different interpretations of these concepts can paralyse fruitful discussion. In the following pages, there is an endeavour to both restrict and precise the meaning of some of the concepts related to this topic and to broaden the range of possibilities of steady-state in the field. It is argued here that, in order to test whether or not there is a steady-state assemblage, first of all a variable or descriptor of such assemblage should be chosen. It is also argued that a steady-state does not necessarily occur as the result of a competition process with a stable equilibrium end. Moreover, we suggest that some other processes and mechanisms could control the assemblage as a steady-state. Examples of steady-state phytoplankton assemblage observed in the field (perturbed and unperturbed situations), but probably not related to a competition system equilibrium, are shown: the alternate dominance of two species (Cryptomonas erosa and Limnothrix redekei) during seven unperturbed consecutive weeks in El Porcal Lake (a gravel pit in Central Spain); the co-dominance of five species (Planktothrix agardhii,Limnothrix redekei, Dictytosphaerium sp., Cyclotella meneghiniana and Cryptomonas erosa) over nine unperturbed weeks in the same lake; the dominance of different species in thirty one fluctuating sites of a wetland (La Safor, Mediterranean Spanish coast) and the persistence of some non-dominant species (Peridinium willei and Planktonema lauterbornii) over more than three weeks in the water column mixing period in Las Madres Lake (Central Spain).
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References
Álvarez-Cobelas, M. 1991. Optical limnology of a hypertrophic, gravel-pit lake. Int. Rev. ges. Hydrobiol. 76: 213–223.
Álvarez-Cobelas, M., A. Baltanás, J. L. Velasco, M. Valladolid, M. Izquierdo and E. Martín. 1993. Slow overturn in a gravel-pit lake. Int. Ver. theor. angewan. Limnol.: Verh. 25: 83–87.
Connell, J., 1978. Diversity in tropical rain forest and coral reefs. Science 199: 1304–1310.
Dodson, S. I., S. E. Arnott K. L. Cottingham 2000. The relationship in lake communities between primary productivity and species richness. Ecology 81: 2662–2679.
Drake, J., 1990. Communities as assembled structures: Do rules govern pattern? Trends in Ecol. Evol. 5: 159–164.
Harris, G. P., 1986. Phytoplankton Ecology. Chapman Hall, London. 384 pp.
Imboden, D. M. A. Lerman, 1978. Chemical models of Lakes. In Lerman, A. (eds.), Lakes: Chemestry, Geology, Physics. Springer, New York: 341–356.
Jeffries, M. D. Mills, 1990. Freshwater ecology. Belhaven Press, London. 285.
Keddy, P. A., 1989. Competition. Chapman Hall, London. 202 pp.
Keddy, P. A., 2000. Wetland Ecology. Cambridge University Press, Cambridge. 614 pp.
Keddy, P. E. Weiher, 1999. The scope and goals of research on assembly rules. In: Weiher, E. P. Keddy (eds), Ecological Assembly rules. Cambridge University Press, Cambridge. 418 pp.
Lampert W. U. Sommer, 1997. Limnoecology: the ecology of lakes and streams. Oxford University Press, New York.
Levins, R., 1979. Coexistence in a variable environment. Am. Nat. 114: 765–783.
Lund, J. W. G., C. Kipling E. D. Le Cren, 1958. The inverted microscope method of estimating algal numbers and the statistical basis of estimations by counting. Hydrobiologia 11: 143–170.
Morabito, G., A. Oggioni P. Panzani, 2003. Phytoplankton assemblage at equilibrium in large and deep subalpine lakes: a case study from Lago Maggiore (N. Italy). Hydrobiologia 502 ( Dev. Hydrobiol. 172 ): 37–48.
MacArthur, R. H. E. O. Wilson, 1967. The theory of island biogeography. Princeton University Press, Pricenton.
Mayr, E., 1982. The growth of biological thought. Harvard University Press, Cambridge. 382 pp.
Naselli-Flores, L., J. Padisák, M. T. Dokulil I. Chorus, 2003. Equilibrium/steady-state concept in phytoplankton ecology. Hydrobiologia 502 ( Dev. Hydrobiol. 172 ): 395–403.
Pahl-Wostl, C., 1995. The dynamic nature of ecosystems. John Wiley Sons, Chichester. 267 pp.
Patten, B. C. S. E. Jørgensen, 1995. Complex Ecology. Prentice Hall PTR, New Jersey. 705 pp.
Pollingher, U., 1988. Freshwater armored dinoflagellates: growth, reproduction strategies, and population dynamics. In Sandgren C. D. (ed.), Growth and Reproductive Strategies of Freshwater Phytoplankton. Cambridge Uni. Press, Cambridge: 134–174.
Putman, R. J. Community Ecology. Chapman Hall, London. 178 pp.
Reynolds, C., 1980. Phytoplankton assemblages and their periodicity in stratifying lake system. Hol. Ecol. 3: 141–159
Reynolds, C., 1984. The ecology of freshwater phytoplankton. Cambridge University Press, Cambridge. 384 pp.
Reynolds, C., 1998. The state of freshwater ecology. Freshwat. Biol. 39: 741–753.
Reynolds, C. S., V. Huszar, C. Kruk, L. Naselli-Flores S. Melo, 2002. Towards a functional classification of the freshwater phytoplankton. J. Plankton Res. 24: 417–428.
Rodrigo, M. A., C. Rojo X. Armengol, 2003. Plankton biodiversity in a landscape of shallow water bodies (Mediterranean coast, Spain). Hydrobiologia 506–509 (in press).
Rojo, C. M. Alvarez, 1992. Taxonomy and ecology of phytoplankton in a hypertrophic, gravel-pit lake. I. Cyanophyceae. Archiv für Protistenkunde 142: 77–90.
Rojo, C. M. Alvarez, 1993a. Taxonomy and ecology of phytoplankton in a hypertrophic, gravel-pit lake. II. Cryptophyceae, Euglenophyceae. Nova Hedwigia 57: 47–63.
Rojo, C. M. Alvarez, 1993b. Population dynamics of Planktothrix agardhii, Limnothrix redekei, Oscillatoria lanceaeformis and Pseudoanabaena limnetica (Cyanophyceae) in a hypertrophic shallow lake. Hydrobiologia 275 /276: 165–171.
Rojo, C. M. Alvarez, 1993c. Hypertrophic phytoplankton and the intermediate disturbance hypothesis. Hydrobiologia 249: 43–57
Rojo, C. M. Alvarez, 1994. Taxonomy and ecology of phytoplankton in a shallow, hypertrophic lake. III. Diatomophyceae. Archiv für Hydrobiol. Algol. Stud. 72: 53–70.
Rojo, C. M. Alvarez, 1995a. Taxonomy and ecology of phytoplankton in a shallow, hypertrophic lake. IV. Chlorophyceae, Chlorococcales. Archiv für Hydrobiol. Algol. Stud. 77: 7–35.
Rojo, C. M. Alvarez, 1995b. Taxonomy and ecology of phytoplankton in a shallow, hypertrophic lake. V. Chlorophyceae, Volvocales. Archiv für Hydrobiol. Algol. Stud. 79: 19–37.
Rojo, C., K. Kiss, M. Álvarez-Cobelas M. A. Rodrigo, 1999. Population dynamics of Cyclotella ocellata (Bacillariophyceae): endogenous and exogenous factors. Archiv für Hydrobiol. 145: 479–495.
Rojo, C. M. Álvarez-Cobelas, 2001. Phytoplankton structure and dynamics at a daily temporal scale: response to the thermal overturn. Archiv für Hydrobiol. 151: 549–569.
Rott, E., 1981. Some results from phytoplankton counting intercal- ibrations. Schweizerische Zeitschrift für Hydrol. 43: 34–62.
Salmaso, N., 2003. Life strategies, dominance patterns and mechanisms promoting species coexistence in phytoplankton communities along complex environmental gradients. Hydrobiologia 502 ( Dev. Hydrobiol. 172 ): 13–36.
Scheffer, M., S. Reinaldi, J. Huisman F. J. Weissing, 2003. Why plankton communities have no equilibrium: solutions to the paradox. Hydrobiologia 491: 9–18.
Sommer, U., 1985. Comparison between steady-state and non-steady state competition: experiments with natural phytoplankton Limnol. Oceanogr. 30: 335–346
Sommer, U., J. Padisák, C. S. Reynolds P. Juhász-Nagy, 1993. Hutchinson’s heritage: The diversity-disturbance relationship in phytoplankton. Hydrobiologia 249: 1–7.
Stoyneva, M. P., 2003. Steady-state phytoplankton assemblages in shallow Bulgarian wetlands. Hydrobiologia 502 ( Dev. Hydrobiol. 172 ): 169–176.
Tilman, D., 1982. Resource competition and community structure. Princeton University Press, Princeton. 296 pp.
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Rojo, C., Álvarez-Cobelas, M. (2003). Are there steady-state phytoplankton assemblages in the field?. In: Naselli-Flores, L., Padisák, J., Dokulil, M.T. (eds) Phytoplankton and Equilibrium Concept: The Ecology of Steady-State Assemblages. Developments in Hydrobiology, vol 172. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-2666-5_2
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DOI: https://doi.org/10.1007/978-94-017-2666-5_2
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