Regeneración de Celtis tala y su relación con el pastoreo, la cobertura herbácea y arbórea en el NE de la provincia de Buenos Aires, Argentina

Authors

  • Marcelo F. Arturi Laboratorio de Investigaciones de Sistemas Ecológicos y Ambientales, Facultad de Ciencias Agrarias y Forestales. UNLP. Diagonal 113 Nro 469 (1900) La Plata, Argentina

Abstract

Seedling and sapling densities were assessed in three, 5-m wide, contiguous areas: forest, forest edge and adjacent grassland, 20 km SE from Magdalena city (35o11 ‘S, 57o17’W). Sapling density was low at the forest edge (0.03 ± 0.007plant/m2) and 0 in the forest and the grassland. Grazing had no effect on density and mean height. Sapling occurrence war negatively related to the cover of the same species. 98% ofsaplings were under othertree species (Scutia buxifolia Reiss) and tended to occur atlow grass cover. Mean seedling density was lower under C. tala 3.0 ± 0.3 plant/m2 than under S. buxifolia (8.1 ± 1.2 plant/m2) cover. No differences among forest, forest edge, and grassland were found. Seedling density was larger under S. buxifolia and was unrelated with herbaceous cover. Differences in sapling density among forest, forest edge, and grassland were due to differences in seedling mortality and could not be explained by differences in seed availability and germination. The results suggest that the forest- grasssland limit is stable at ecological time scale.

References

Bazzaz, F.A. 1979. The physiological ecology of plant succession. Ann. Rev. Ecol. Syst. 10: 351-371.

Belsky A.J. 1994.Influence of trees on savanna productivity: test of shade nutrients, and tree-grass competition. Ecology 75: 922-932.

Borchert, M.I., F.W. Davis, J. Michaelis y L.D. Oyler. 1989. Interactions of factors affecting seedling recruitment of Blue Oak (Quercus douglasii) in California. Ecology 70: 389-404.

Cabrera, A.L. y E. Zardini. 1978. Manual de la flora de los alrededores de Buenos Aires. ACME, Buenos Aires 715 pp.

DeSteven, D. 1991.Experiments on mechanisms of tree establisment in old field succesio: seedling emergence. Ecology 72: 1066-1075.

León, R., S. Burkart y C. Movía. 1979.Relevamiento fitosociológico del pastizal del Norte de la Depresión del Salado. INTA, Serie Fitogeográfica 17:1-88.

Facelli, J.M. y R.J.C. León. 1986.El establecimiento espontáneo de árboles en la Pampa, un enfoque experimental. Phytocoenología 14: 263-274.

Fidalgo, F., O. Colado y F.O. De Francesco. 1973. Sobre ingresiones marinas en los partidos de Castelli, Chascomús y Magdalena (Provincia de Buenos Aires). Act. V Cong. Geol. Arg.lll:227-247.

Goya, J., L. Placci, M. Arturi y A. brown. 1992. Distribución y características estructurales de los talares de la Reserva de Biosfera “Parque Costero del Sur”. Revista de la Facultad de Agronomía, La Plata 68: 53-64.

Maguire, D.A. y R.T. Forman. 1983.Herb cover effects on tree seedling pattern in amature Hemlock-Hardwood forest. Ecology 64:1367-1380.

Morello, J. 1970. Modelo dé relaciones entre pastizales y leñosas colonizadoras del Chaco Argentino. IDIA 237: 31-52.

Nambiar, E. K. y Sands R. 1992. Effects of compaction and simulated root channels in the subsoil on root development, wateruptake and growth of radiata pine. Tree Physiol. 10: 297-306.

Nambiar, E. K. y Sands R. 1993. Competition for water and nutrients. Can. J. For. Res. 23: 1955-1968.

Parodi, L. 1940. Distribución geográfica de los talares de la Pcia de Buenos Aires. Darwiniana 4:33-56.

Parodi, L. 1942. ¿Por qué no existen bosques naturales en la llanura bonariense si los áboles crecen en ella cuando se los cultiva? Rev. Cent. Est. Agronomía 30: 387-390.

Ribichich, A.M. 1996. Celtis tala Planchon (Ulmaceae s. 1.) seedling establishment on contrasting soils and microdisturbances: A greenhouse trial concerning adults ’field distribution pattern. Flora 191: 321-327.

Sánchez, R.O., J.A. Ferrer, O.A. Duymovich y M.A. Hurtado. 1976.Estudio pedológico integral de los Partidos de Magdalena y Brandsen (Provincia de Buenos Aires). Anales del LEMIT Serie II N° 310, 1

Siegel, S. 1956. Non parametric statistic for behavioral sciences. Me Graw-Hill, New York, 312 pp.

Tang, Z.C. y T.T. Kozlowski. 1982.Some physiological and morphologial responses of Quercus macrocarpa seedlings to flooding. Can. J. For. Res. 12: 196-202.

Vervoorst, F. 1967.Las comunidades vegetales de la depresión del salado. Serie Fitogeográfica 7.La vegetación de la República Argentina. SEAGN-INTA Bs As 259 pp.

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Published

1997-06-01

How to Cite

Arturi, M. F. (1997). Regeneración de Celtis tala y su relación con el pastoreo, la cobertura herbácea y arbórea en el NE de la provincia de Buenos Aires, Argentina. Ecología Austral, 7(1), 003–012. Retrieved from https://ojs.ecologiaaustral.com.ar/index.php/Ecologia_Austral/article/view/1644

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Vol. 7 No. 1 (1997)

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Articles

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