Advertisement

Hydrobiologia

, Volume 299, Issue 3, pp 219–230 | Cite as

Distribution of stream macroalgae in the northwest region of São Paulo State, southeastern Brazil

  • Orlando NecchiJr
  • Ciro C. Z. Branco
  • Rita C. G. Simão
  • Luis H. Z. Branco
Article

Abstract

Forty-four stream segments were sampled from May to October in 1992 and 1993 in the northwest region of São Paulo State, southeastern Brazil (19°45′–21°25′S, 49°05′–51°30′S). Thirty-six macroalgal subgeneric taxa were found and Chlorophyta was the dominant algal group (47% species), followed by Cyanophyta (33.5%), Rhodophyta (14%) and Chrysophyta (5.5%). The most widespread species wereStigeoclonium helveticum (25% sites),Batrachospermum delicatulum andCompsopogon coeruleus (20.5%). Distribution was patchy, with species number per sampling site ranging from 0 to six (3.1 ± 1.7) and correlated positively with species abundance. Species cover ranged from 0 to 61% of the stream bottom (19.1 ± 19.7%). Most sites (57%) were dominated by one or two macroalgae species. No significant difference was found between the frequency distribution of variables measured for streams and for total macroalgae, but the most widespread species differed for most parameters and occurred over wider ranges of environmental conditions. Mean species number and abundance were close to values found in distinct regions or biomes of North America. Higher conductance and lower oxygen values, as well as rocky substrata, generally constituted the most favourable combination of conditions for the development of macroalgae in the region. The pattern of strong dominance of few species was considered to be typical for stream macroalgal communities in general.

Key words

Brazil distribution macroalgae periphyton river stream 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Biggs, B. J. F., 1990. Periphyton communities and their environments in New Zealand rivers. New Zeal. J. mar. Freshwat. Res. 24: 367–386.Google Scholar
  2. Biggs, B. J. F. & G. M. Price, 1987. A survey of filamentous algal proliferations in New Zealand rivers. New Zeal. J. mar. Freshwat. Res. 21: 175–191.Google Scholar
  3. DeNicola, D. M., K. D. Hoagland, S. C. Roemer, 1992. Influences of canopy cover on spectral irradiance and periphyton assemblages in a prairie stream. J.N. Am. Benthol. Soc. 11: 391–404.Google Scholar
  4. Digby, P. G. N. & R. A. Kempton, 1987. Multivariate analysis of ecological communities. Chapman and Hall, London, 206 pp.Google Scholar
  5. Entwisle, T. J., 1989. Macroalgae in the Yarra River basin: flora and distribution. Proc. r. Soc. Victoria 101: 1–76.Google Scholar
  6. Johansson, C., 1982. Attached algal vegetation in running waters of Jämtland, Sweden. Acta phytogeogr. suec. 71: 1–83.Google Scholar
  7. Kawecka, B., 1980. Sessile algae in European mountain streams 1. The ecological characteristics of communities. Acta hydrobiol. 22: 361–420.Google Scholar
  8. Krebs, C. J., 1989. Ecological methodology. Harper & Row, New York, 654 pp.Google Scholar
  9. Lehninger, A. L., 1975. Biochemistry, 2nd edn. Worth Publ., New York, 770 pp.Google Scholar
  10. Maitland, P. S., 1990. Biology of fresh waters, 2nd edn. Blackie, Glasgow, 276 pp.Google Scholar
  11. Necchi, O., Jr, 1991. Macroalgae of a stream in southeastern Brazil: composition, seasonal dynamics and relation to physical and chemical variables. Hydrobiologia 213: 241–250.Google Scholar
  12. Necchi, O., Jr & D. Pascoaloto, 1993. Seasonal dynamics of macroalgal communities in the Preto River basin, São Paulo, southeastern Brazil. Arch. Hydrobiol.: 129: 231–252.Google Scholar
  13. Necchi, O., Jr, D. Pascoaloto & L. H. Z. Branco, 1993. Distribution of macroalgae in a tropical river basin from southeastern Brazil. Arch. Hydrobiol.: 129: 459–471.Google Scholar
  14. Podani, J., 1989. SYN-TAX III-PC, computer programs for data analysis in Ecology and Systematics, User's Manual. ICEM, Trieste, 127 pp.Google Scholar
  15. Ryan, B. F., B. L. Joiner & T. A. Ryan, 1985. Minitab Handbook, 2nd edn. Duxbury Press, Boston, 374 pp.Google Scholar
  16. Sheath, R. G. & J. M. Burkholder, 1985. Characteristics of softwater streams in Rhode Island II. Composition and seasonal dynamics of macroalgal communities. Hydrobiologia 128: 109–118.Google Scholar
  17. Sheath, R. G. & K. M. Cole, 1992. Biogeography of stream macroalgae in North America. J. Phycol. 28: 448–460.Google Scholar
  18. Sheath, R. G., J. A. Hambrook & C. A. Nerone, 1988 The benthic macro-algae of Georgian Bay and their drainage basin. Hydrobiologia 163: 141–148.Google Scholar
  19. Sheath, R..G., P. B. Hamilton, J. A. Hambrook & K. M. Cole, 1989. Stream macroalgae of the eastern boreal forest region of North America. Can. J. But. 67: 3353–3362.Google Scholar
  20. Sheath, R. G., M. O. Morison, J. E. Korch, D. Kaczmarczyk & K. M. Cole, 1986. Distribution of stream macroalgae in southcentral Alaska. Hydrobiologia 135: 259–269.Google Scholar
  21. Sokal, R. R. & F. J. Rohlf, 1981. Biometry. W. H. Freeman, New York, 859 pp.Google Scholar
  22. Whittaker, R. H., 1975. Communities and ecosystems. Macmilan, New York: 87–94.Google Scholar
  23. Whitton, B. A., 1984. Ecology of European Rivers. Blackwell Sci. Publ., Oxford, 644 pp.Google Scholar
  24. Whitton, B. A., E. Rott & G. Friedrich, 1991. Use of algae for monitoring rivers. Inst. But. Univ. Innsbruck, Innsbruck, 193 pp.Google Scholar

Copyright information

© Kluwer Academic Publishers 1995

Authors and Affiliations

  • Orlando NecchiJr
    • 1
  • Ciro C. Z. Branco
    • 1
  • Rita C. G. Simão
    • 1
  • Luis H. Z. Branco
    • 1
  1. 1.Depto. BotânicaIBILCE-UNESPSão José do Rio Preto, SPBrazil

Personalised recommendations