Biodiversity & Conservation

, Volume 14, Issue 7, pp 1699–1718 | Cite as

Primary producers in a Pampean stream: temporal variation and structuring role

  • Adonis Giorgi
  • Claudia Feijoó
  • Guillermo Tell


Low current velocities, high nutrient levels, the lack of riparian forest vegetation, and the development of dense and rich macrophyte communities characterize Pampean streams. The objective of this study was to describe the main physical, chemical, and biological characteristics of a headwater Pampean stream as well as to analyze the role of macrophytes and phytobenthos. The study was conducted in a stream considered to be not much disturbed by human activities. Samples of water and organisms (macrophytes, benthic algae and invertebrates) were taken monthly for 14 months in two sampling stations, in fast flow and slow flow sites. Macrophyte biomass and diversity increased in spring and summer, and they decreased in autumn, when the plant community was greatly affected by an important flood. Phytobenthos biomass was lower in late summer, possibly due to the establishment of a dense cover of the floating macrophyte Lemna gibba L. Density of amphipods and gastropods greatly increases in spring and summer, jointly with the macrophyte development. Analysis of correlation showed that current velocity is the most important factor influencing macrophyte biomass and phytobenthos structure, while depth, nutrients, and herbivores are linked factors. Pampean streams could be considered systems dynamically fragile, because habitat heterogeneity is generated by aquatic vegetation, a substratum that varies along time.


Current velocity Herbivores Macrophytes Phytobenthos Streams 


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  1. APHA (American Public Health Association) 1992. Standard Methods for the Examination of Water and Wastewater. APHAWashington D.C.Google Scholar
  2. Biggs, B.J., Kilroy, C., Lowe, R.L. 1998Periphyton development in three valley segments of a New Zealand grassland river: test of a habitat matrix conceptual model within a catchmentArchiv für Hydrobiologie143147177Google Scholar
  3. Borgnia, M., Galante, M.L., Cassini, M.H. 2000Diet of the coypu (nutriaMyocastor coypus) in agro-systems of Argentinean PampasJournal of Wildlife Management64354361Google Scholar
  4. Bowker, D.W., Denny, P. 1980The seasonal succession and distribution of epiphytic algae in the phyllosphere of Lemna minor LArchiv für Hydrobiologie903945Google Scholar
  5. Casset, M.A., Momo, F.R., Giorgi, A.D.N. 2001Dinámica poblacional de dos especies de anfípodos y su relación con la vegetación acuática en un microambiente de la cuenca del río Luján (Argentina)Ecología Austral.117985Google Scholar
  6. Champion, P.D., Tanner, C.C. 2000Seasonality of macrophytes and interaction with flow in a New Zealand lowland streamHydrobiologia441112CrossRefGoogle Scholar
  7. Claps, M.C. 1991Diatom communities on aquatic macrophytes of pampasic lotic environments (Argentina)Acta Hydrobiologica33195208Google Scholar
  8. Claps, M.C. 1996Structure and dynamics of epipelic algae from a plain river (Samborombon RiverBuenos Aires, Argentina)Archiv für Hydrobiologie137251263Google Scholar
  9. Connell, J.L., Slatyer, R.O. 1977Mechanisms of succession in natural communities and their role in community stability and organizationAmerican Naturalist11111191144CrossRefGoogle Scholar
  10. Cushing, C.E., Cummins, G.W., Minshall, G.W., Vannote, R.L. 1983Periphyton, chlorophyll-aand diatoms of the Middle Fork of the Salmon RiverIdahoHolartic Ecology6221227Google Scholar
  11. Dawson, F.H. 1988Water flow and the vegetation of running watersSymoens, J.J. eds. Vegetation of Inland WatersKluwer Academic PublishersDordrecht283309Google Scholar
  12. Diehl, S., Kornijów, R. 1998Influence of submerged macrophytes on trophic interactions among fish and macroinvertebratesJeppesen, E.Sondergaard, M.Sondergaard, M.Christoffersen, K. eds. The structuring role of submerged macrophytes in lakesSpringerNew York2446Google Scholar
  13. Dodds, W.K. 1991Factors associated with the dominance of the filamentous green alga Cladophora glomerataWater Research2513251332CrossRefGoogle Scholar
  14. Dodds, W.K., Biggs, B.J.F. 2002Water velocity attenuation by stream periphyton and macrophytes in relation to growth form and architectureJournal of North American Benthological Society21215Google Scholar
  15. Dodds, W.K., Gudder, D.A. 1992The ecology of CladophoraJ. Phycol.28415427CrossRefGoogle Scholar
  16. Feijoó, C., Giorgi, A., García, M.E., Momo, F. 1999Temporal and spatial variability in streams of a pampean basinHydrobiologia3944152CrossRefGoogle Scholar
  17. Fisher, S.G., Grimm, N.B. 1988Disturbance as a determinant of structure in a Sonoran Desert stream ecosystemVerhandlungen Internationale Vereinigung für Theoretische und Angewandte Limnologie2311831189Google Scholar
  18. Gallardo, J.M. 1977Reptiles de los alrededores de Buenos AiresEudebaBuenos AiresGoogle Scholar
  19. Gantes, H.P., Sánchez Caro, A. 2001Environmental heterogeneity and spatial distribution of macrophytes in plain streamsAquatic Botany70225236CrossRefGoogle Scholar
  20. Giorgi, A. 1998Factores reguladores del fitobentos en arroyos de llanuraUniversidad Nacional de La PlataLa PlataArgentinaPh.D. thesisGoogle Scholar
  21. Giorgi, A., Malacalza, L. 1994Biomass variation of phytobenthos in a plain streamVerh. Internat. Verein. Limnol.2518831887Google Scholar
  22. Giorgi, A., Feijoó, C., Calviño, P., Dutweiller, F. 1998Annual variation of periphyton biomass in two plain streams with different macrophyte abundanceVerhandlungen Internationale Vereinigung für Theoretische und Angewandte Limnologie2616981701Google Scholar
  23. Giorgi, A., Tiraboschi, B. 1999Evaluación experimental del efecto de dos grupos de macroinvertebrados (anfípodos y gasterópodos) sobre algas epífitasEcología Austral93544Google Scholar
  24. Goldberg, S., Cirera, I., Parella, M., Benítez, A., Bulos, L., Troncoso, A. 1995Caracterización climática y agroclimática de la Cuenca del Río LujánPrograma de Ecología AcuáticaUniversidad Nacional de LujánArgentina1319Resúmenes de la Jornada sobre la Cuenca del Río Luján, Luján, Argentina29 November 1995.Google Scholar
  25. Gordon, N.D., Mc Mahon, T.A., Finlayson, B.L. 1992Stream HydrologyJ. Wiley & SonsTorontoGoogle Scholar
  26. Guasch, H., Sabater, S. 1994Primary production on epilithic communities in undisturbed Mediterranean streamsVerhandlungen Internationale Vereinigung für Theoretische und Angewandte Limnologie2517611764Google Scholar
  27. Guasch, H., Martí, E., Sabater, S. 1995Nutrient enrichment effects on biofilm metabolism in a Mediterranean streamFreshwater Biology33373383Google Scholar
  28. Hillebrand, H. 1983Development and dynamics of floating clusters of filamentous algaeWetzel, R.G. eds. Periphyton of freshwaters ecosystemsDr. W. Junk PublishersThe Hague.3139Google Scholar
  29. Madsen, J.D., Adams, M.S. 1988The seasonal biomass and productivity of the submerged macrophytes in a polluted Wisconsin streamFreshwater Biology204150Google Scholar
  30. Margalef, R. 1983LimnologíaOmegaBarcelonaGoogle Scholar
  31. Marker, A.F.H. 1976The benthic algae of some streams in southern EnglandJournal of Ecology64343358Google Scholar
  32. McCormick, P.V. 1994Evaluating the multiple mechanisms underlying herbivore-algal interactions in streamsHydrobiologia2914759CrossRefGoogle Scholar
  33. Meyer, J.L., Edwards, R.T. 1990Ecosystem metabolism and turnover of organic carbon along a blackwater river continuumEcology71668677Google Scholar
  34. Minshall, G.W., Cummins, K.W., Petersen, R.C., Cushing, C.E., Bruns, D.A., Sedell, J.R., Vannote, R.L. 1985Developments in stream Ecosystem TheoryCanadian Journal of Fisheries and Aquatic Sciences4210451054Google Scholar
  35. Morrás, H. 1993Fósforo total y materiales parentales de la región central de la República ArgentinaInstituto de Suelos, INTABuenos AiresGoogle Scholar
  36. Palermo, M.A. eds. 1984Fauna ArgentinaCentro Editor de América LatinaBuenos AiresGoogle Scholar
  37. Papadakis, J. 1980El sueloAlbatrosBuenos AiresGoogle Scholar
  38. Prahl, C., Jeppesen, E., Sand-Jensen, K., Moth-Iversen, T. 1991A continuous-flow system for measuring in vitro oxygen and nitrogen metabolism in separated stream communitiesFreshwater Biology26495506Google Scholar
  39. Sabater, S., Butturini, A., Muñoz, I., Romaní, A., Wray, J., Sabater, F. 1998Effects of removal of riparian vegetation on algae and heterotrophs in a Mediterranean streamJournal of Aquatic Ecosystems Stress Recovery6129140CrossRefGoogle Scholar
  40. Sala, J.M., González, N., Kruse, E. 1983Generalización hidrológica de la Provincia de Buenos AiresComité Nacional para el Programa Hidrológico InternacionalBuenos Aires, Argentina9741009Resúmenes Coloquio Internacional sobre Hidrología de Grandes Llanuras, OlavarríaArgentina11–20 April 1983.Google Scholar
  41. Sand-Jensen, K., Moller, J., Olesen, B.H. 1988Biomass regulation of microbenthic algae in Danish lowland streamsOikos53332340Google Scholar
  42. Sand-Jensen, K., Borg, D., Jeppesen, E. 1989aBiomass and oxygen dynamics of the epiphytic community in a Danish lowland streamFreshwater Biology22431443Google Scholar
  43. Sand-Jensen, K., Moller, J., Hald Olesen, B. 1989bBiomass regulation of microbenthic algae in Danish lowland streamsOikos53332340Google Scholar
  44. Solari, L.C., Claps, M.C. 1996Planktonic and benthic algae of a pampean river (Argentina): comparative analysisAnnals de Limnologie328995Google Scholar
  45. Steinman, A.D., McIntire, C.D. 1987Effects of irradiance on the community structure and biomass of algal assemblages in laboratory streamsCan. J. Fish. Aquat. Sci.4416401648Google Scholar
  46. Suárez, L., Vidal-Abarca, R. 2000Metabolism of a semi-arid stream of south east SpainVerhandlungen Internationale Vereinigung für Theoretische und Angewandte Limnologie27756761Google Scholar
  47. Suren, A.M. 1991Bryophytes as invertebrate habitat in two New Zealand alpine streamsFreshwater Biology26399418Google Scholar
  48. Vannote, R.L., Minshall, G.W., Cummings, K.W., Sedell, J.R., Cushing, C.E. 1980The river continuum conceptCanadian Journal of Fisheries and Aquatic Sciences37130137Google Scholar
  49. Westlake, D.F. 1973Aquatic macrophytes in riversA review. Polskie Archiwum Hydrobiologii203140Google Scholar
  50. Wetzel, R.G. eds. 1983Periphyton of freshwater ecosystemsDr. W. Junk PublishersThe HagueGoogle Scholar
  51. Wetzel, R.G., Likens, G.E. 1991Limnological analysesSpringer-VerlagNew YorkGoogle Scholar
  52. Wiley, M.J., Osborne, L.L., Larimore, R.W. 1990Longitudinal structure of an agricultural prairie system and its relationship to current stream ecosystem theoryCanadian Journal of Fisheries and Aquatic Sciences47373384Google Scholar
  53. Young, R.G., Huryn, A. 1996Interannual variation in discharge controls ecosystem metabolism along a grassland river continuumCanadian Journal of Fisheries and Aquatic Sciences5321992211CrossRefGoogle Scholar

Copyright information

© Springer 2005

Authors and Affiliations

  1. 1.Program de Investigación en Ecología AcuáticaDepartamento de Ciencias Básicas, Universidad Nacional de LujánLujánArgentina
  2. 2.CONICETArgentina
  3. 3.Lab. Limnología,Facultad de Ciencias Exactas y Naturales (UBA)Buenos AiresArgentina

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