Efectos de la remoción de la biomasa aérea de las especies más abundantes sobre la estructura de un mallín patagónico

Authors

  • Estela Raffaele Universidad Nacional del Comahue, Centro Regional Universitario Bariloche, C. C. 1336, Bariloche, Río Negro, Argentina

Abstract

I analyzed the effect of the removal of the aerial biomass of the most abundant species on the plant community structure of a flooded meadow, located in NW Patagonia. The experimental treatments consisted of: (i) the removal of the aerial biomass of the dominant species; (ii) the removal of the aerial biomass of the dominant and the co-dominat species. The following hypothesis was tested: the dominant and the co-dominat species limit the presence and abundance of other species; as a result, species diversity and/orspeciesrichness would increase afterspeciesremovals. Significant differencesin species responses were observed only in two species, one year after the removals of species were performed. No significant differences in species diversity and species richness were observed. It is suggested that the removed species have a higher reposition rate of removed tissues than the rate of occupance of the open space by the other species.

References

Aarssen, L.W. y G.A. Epp. 1990. Neighbour manipulations in natural vegetation: a review. J. of Veg. Science1:13- 30.

Abdul-Fatih, H.A. y F.A. Bazzaz. 1979. The biology of Ambrosia trifida L. 1. Influence ofspeciesremoval on the organization of the plant community. New Phytol. 83:813-816.

Allen, E.B. y R.T.T. Forman. 1976. Plant species removal of old- field community structure and stability. Ecology 57:1233-1243.

Armesto, J. y S.T. A. Pickett.1985. Experiments on disturbance in old-field plant communities: impact on species richness and abundance. Ecology 66:230-240.

Armesto, J. y S.T.A. Pickett. 1986. Removal experiments to test mechanisms of plant succession in old-fields. Vegetatio 66:85-93.

Bazzaz, F.A. 1983. Characteristics of populations in relation to disturbance in natural and man-modified ecosystems. In Mooney, H.A. y M. Godron (Eds.), Disturbances and Ecosystems. pp: 259-277. Springer-Verlag, Berlin.

Connell, J.H. 1978. Diversity in tropical rain forest and coral reefs. Science 199:1302-1310.

Correa, M.N. 1969. Flora Patagónica. Tomo VIII, parte II. Colección Cientifica INTA, Buenos Aires.

Fowler, N. 1981. Competition and coexistence in a North Carolina grassland. II. The effects of experimental removal of species. J. Ecol. 69:843-854.

Gurevitch, J. y S.T. Chester. 1986. Analysis of Repeated measures Experiments. Ecology 67: 251-255.

Gurevitch, J. y R.S. Unnasch. 1989. Experimental removal of a dominant species attwo levels of soil fertility. J. Bot. 67:3470-3477.

Hils, M.H. y J.L. Vankat. 1982. Species removal from first year old-field plant community. Ecology 63:705-711.

Leck, M.A. 1989. Wetland seed banks. p. 283-305. En The Ecology of seed banks. M.A. Leck, V.T. Parker y R.L. Simpson (Eds.). Academic Press, San Diego.

Lubchenco, J. 1978. Plant species diversity in a marine intertidal community: importance of herbivore food preference and algal competitive abilities. Am. Nat. 112:23-39.

Mead, R. 1988. The design of experiments. Statistical principles for practical application. Cambridge Univ. Press. 627 pp.

Muñoz, E.M. y A.F. Garay. 1985. Caracterización climática de la Provincia de Rio Negro. INTA Bariloche.

Mueller-Dombois, D. y H. Ellenberg. 1974. Aims and Methods of Vegetation Ecology. J Wiley and Sons NY 450 pp.

Paine, R.T. 1966.Food webs complexity and species diversity. Am. Nat. 100:65-75.

Pickett, S.T.A. y P.S. White. 1985. The Ecology of Natural Disturbance and Patch Dynamics, Ac. Press, N.Y.

Pinder, J.E. 1975. Effects of species removal on an old-field plant community. Ecology 56:747-751.

Raffaele, E. 1993.Estructura y Dinámica de la vegetación de un mallín de altura en el N.O. Patagónico sometido a distintos tipos de perturbaciones. Tesis Doctoral UNLP.

Raffaele, E. 1995. Relationship between seed and spore banks and vegetation of a mountain flood meadow (mallin) in Patagonia, Argentina. Wetlands (en prensa).

Silander, J.A. y J. Antonovics. 1982. Analysis of interespecific interactions in a coastal plant community: a perturbation approach. Nature 298:557-560.

Sousa, W.P. 1979a. Experimentalinvestigations of disturbances and ecological successionsin a rocky intertidal algal community. Ecol. Monogr. 49:227-254.

Sousa, W.P. 1980. The responses of a plant community disturbance: the importance of successional age and species life histories. Oecologia 45:72-81.

Veblen, T.T. y D.H. Ashton. 1978. Catastrophic influences on the vegetation of the Valdivian Andes, Chile. Vegetatio 36:149-167.

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Published

1995-12-01

How to Cite

Raffaele, E. (1995). Efectos de la remoción de la biomasa aérea de las especies más abundantes sobre la estructura de un mallín patagónico. Ecología Austral, 5(2), 143–148. Retrieved from https://ojs.ecologiaaustral.com.ar/index.php/Ecologia_Austral/article/view/1675

Issue

Vol. 5 No. 2 (1995)

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Articles

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