Seasonal variation of abundance of Ecballocystis pulvinata Bohlin in a stream of central-southern region of Parana State
Keywords:
macroalgae, seasonality, microhabitat, environmental distributionAbstract
The temporal dynamics of E. pulvinata and its relation to abiotic variables were evaluated monthly during January to December 2007 in a stream located in the central-southern part of Parana State (25º11’16”S - 51º21’25”W). The abundance of the population in terms of percentage cover was obtained by means of the quadrat technique and the following stream water variables were measured: current velocity, irradiance, depth, substrate type, temperature, oxygen saturation, conductivity, pH and turbidity. The abundance of E. pulvinata was considered high (X = 26.7%), with more development (22-46%) during autumn/winter. The low values (0-0.08) of niche width and the few associations with environmental variables shows that the population evaluated is a generalist with regards to the environment in which it occurs. Factors most strictly related were the water flow and the particle size of the substrate, which positively correlated to the seasonal pattern of the population investigated.Downloads
References
Bergey, E.A, Resh, V.H. 2006. Differential response of algae on small streambed substrates to floods. The American Midland Naturalist Journal, 155(2): 270-277.
Bohlin, K. 1897. Die Algen der Ersten Regnellschen Expedition, I. Protococcoideen. Bihang K. Svenska vetenskapsakademiens handlingar, Stockholm, 23(7):1-47.
Branco, C.C.Z. & Necchi, O.Jr. 1996. Distribution of stream macroalgae in the eastern atlantic rainforest of São Paulo State, southeastern Brazil. Hydrobiology, 333:139-150.
______. 1998. Microhabitat and morphometric variation of two Chaetophoracean (Chaetophorales, Chlorophyta) species in tropical streams of southeastern Brazil. Phycology Research, 46:169-174.
______. 2003. Temporal dynamics of two species of Chaetophoraceae (Chlorophyta) in tropical streams of Sno Paulo State, souteastern Brazil. Revista Brasileira de Botânica, 26:151-161.
Branco, C.C.Z., Krupek, R.A. & Peres, C.K. 2008. Seasonality of macroalgal communities in a subtropical drainage basin in Paraná State, Southern Brazil. Brazilian Journal of Biology, 68:631-637.
______. 2009. Ecological distribution of stream macroalgal communities from mid-western region of Paraná State, Southern Brazil: evidence of the importance of local scale variation. Brazilian Archives of Biology and Technology, 52:379-386.
Cattaneo, A., Kerimian, T., Roberge, M. & Marty, J. 1997. Periphyton distribution and abundance on substrata of different size along a gradient of stream trophy. Hydrobiology, 354(1-3):101-110.
Digby, P.G.N. & Kempton, R.A. 1987. Multivariate analysis of ecological communities. Chapman and Hall, London. 206 p.
Downes, B.J., Entwisle, T.J. & Reich, P. 2003. Effects of flow regulation on disturbance frequencies an inchannel bryophytes and macroalgae in some upland streams. River Research and Applications, 19(1):27-42.
Krebs, C.J. 1989. Ecological methodology. New York, Harper & Row. 654 p.
Krupek, R.A., Branco, C.C.Z. & Peres, C.K. 2008. Levantamento florístico das comunidades de macroalgas da bacia do Rio das Pedras, região centro-sul do estado do Paraná, sul do Brasil. Hoehnea, 35(2):189-208.
______. 2007. Distribuição ecológica das comunidades de macroalgas da bacia de drenagem do Rio das Pedras, região centro-sul do estado do Paraná, sul do Brasil. Revista Brasileira de Botânica, 30(2):173-182.
Necchi 0. Jr, 1997. Microhabitat and plant structure of Batrachospermum (Batrachospermales, Rhodophyta) populations in four streams of São Paulo State, southeastern Brazil. Phycological Research, 45:39-45.
Necchi, O. Jr., Branco, C.C.Z. & Branco, L.H.Z. 2000. Distribution of stream macroalgae in São Paulo State, southeastern Brazil. Algological Studies, 97:43-57.
Necchi, O.Jr, Spezamiglio, D.N., Branco, C.C.Z. & Branco, L.H.Z. 2002. Taxonomy and ecological distribuition of the genus Microspora (Microsporaceae, Chlorophyta) in lotic ecosystems of São Paulo State, southeastern Brazil. Algological Studies, 105:39-50.
Necchi, O.Jr., Branco C.C.Z. & Gomes, R..R.V. 1999 - Microhabitat and plant structure of Compsopogon coeruleus (Compsopogonaceae, Rhodophyta) populations in streams from Sao Paulo State, southeastern
Brazil. Cryptogamie Algologie, 20:75-87.
Necchi, O. Jr., Pascoaloto, D. 1993. Seasonal dynamics of macroalgal communities in the Preto River basin, São Paulo, southeastern Brazil. Archiv für Hydrobiologie, 129:231-252.
Necchi, O.Jr., Branco, L.H.Z. & Spezamiglio, D.N. 2008. Distribuição ecológica de comunidades de macroalgas de ambientes lóticos do Parque Nacional de Itatiaia (RJ, MG) Brasil. Revista Brasileira de Botânica, 31:135-145.
Peres, C.K., Branco, C.C.Z. & Krupek, R.A. 2008. Macroalgas de riachos da Serra da Prata, leste do estado do Paraná, sul do Brasil. Acta Botânica Brasilica, 22(2):333-344.
______. 2009. Distribuição ambiental e temporal das comunidades de macroalgas de riachos da Serra da Prata, Estado do Paraná, Sul do Brasil. Revista Brasileira de Botânica, 32(4):625-633.
Sheath, R.G. & Cole, K.M. 1992. Biogeography of stream macroalgae in North America. Journal of Phycology, 28:448-460.
Sokal, R.R. & Rohlf, F.J. 1981. Biometry. W.H. Freeman, New York. 859 p.
Stevenson, R.J., Bothwell, M.L. & Lowe, R.L. 1996. Algal ecology: freshwater benthic ecosystems. San Diego: Academic Press. 753 p.
Zar, J.H. 1999. Biostatistical Analysis, fourth edition. Prentice Hall. 663 p.
Vieira Júnior, J., Necchi, O.Jr., Branco, C.C.Z. & Branco, L.H.Z. 2002. Characeae (Chlorophyta) em ecossistemas lóticos do Estado de São Paulo, Brasil - 1: gênero Nitella. Hoehnea, 29:249-266.
______. 2003. Characeae (Chlorophyta) em ecossistemas lóticos do Estado de São Paulo, Brasil - 2: gênero Chara e distribuição ecológica. Hoehnea, 30:53-70.
