La Patagonia extrandina: análisis de la estructura y el funcionamiento de la vegetación a distintas escalas

Authors

  • José M. Paruelo IFEVA, Cátedra de Ecología, Departamento de Ecología, Facultad de Agronomía, UBA. Av. San Martín 4453, 1417 Buenos Aires, Argentina
  • Martín R. Aguiar IFEVA, Cátedra de Ecología, Departamento de Ecología, Facultad de Agronomía, UBA. Av. San Martín 4453, 1417 Buenos Aires, Argentina
  • Rodolfo A. Golluscio IFEVA, Cátedra de Ecología, Departamento de Ecología, Facultad de Agronomía, UBA. Av. San Martín 4453, 1417 Buenos Aires, Argentina
  • Rolando J.C. León IFEVA, Cátedra de Ecología, Departamento de Ecología, Facultad de Agronomía, UBA. Av. San Martín 4453, 1417 Buenos Aires, Argentina

Abstract

This paper summarizes part of the available information on the structure and functioning of the Patagonian steppe. This information is presented hierarchically, from the regional level, based oil remote sensing studies, to detailed analyses about the recruitment of seedlings in different microsites of the steppe. We stress the importance of a proper definition of the scale of different problems in Ecology. We propose the use of the present work in undergraduate courses of Ecology, to discuss, based on a real regional system, a series of concepts, such as resource assessment, levels of perception, remote sensing, gradient analysis, competintion, environment-vegetation relationships and energy flow.

References

Aguiar, M. R., J. M. Paruelo, R. A. Golluscio, R.J.C. León, S. E. Bu rkart y G. Pujol. 1988. The heterogeneity of the vegetation in arid and semiarid Patagonia: An analysis using AVHRR/NOAA satelite imagery. Annali di Botánica 4h: 103-1 14.

Aguiar, M.R., A. Soriano y O.E. Sala. 1992. Competition and facilitation in the recruitment of grass seedlings in Patagonia Functional Ecology 6:66-70.

Batista, W.B. 1988. Relating new information to a previous vegetation classification: a case of discriminant coordinates analysis. Vegetatio 75:153-158.

Bertiller, M.B., A.M. Beeskow y M.P. Irrisarri. 1981. Caracteres fisonómicos y florísticos de da vegetación del Chuhut I . Sierra San Bernardo. Contribución N 40. CONICET. Centro Nacional Patagónico

Bray, J.R. y J.T. Curtis. 1957. An ordination of the upland forest communities of Southern Wisconsm. Ecological Monographs 27:32-5-349.

Fernández A., R.J. y J.M. Paruelo. 1988. Root systems of two Patagonian shrubs: A quantitative description using a geometrical method. Journal of Range Management 41:220-223.

Fernández A., R.1., O.E. Sala y R.A. Golluscio. 1991. Woody and herbaceous aboveground production of a Patagonian steppe. Journal of Range Management 44:434-437.

Golluscio, R.A., R.J.C. León y S.B. Perelman. 1982. Caracterización fitosociológica de la estepa del oeste de Chubut: su relación con el gradiente ambiental. Boletín de la Sociedad Argentina de Botánica 21: 299-324.

León, R.I.C. y J.M. Facelh. 1981. Descripción de una coenoclina en el SW del Chubut. Revista de la Facultad de Agronomía (UBA) 2:163-171.

León, R.J.C. y M.R. Aguiar. 1985. El deterioro por uso pasturil en estepas herbáceas patagónicas. Phytocoenologia. 13:181-196.

Medán, D. y R.D. Tortosa. 1981. Nódulos actinomicorricos en especies argentinas de los géneros Kentrothammus, Trevoa (Rhamnaceae) y Coriaria (Coriariaceae). Boletín de la Sociedad Argentina de Botánica 20 (1-2):71-81.

Paruelo, J.M. 1991. Principales controles de las pérdidas de agua en la estepa patagónica. Tesis Magister Scientae. Escuela para Graduados. Facultad de Agronomía. UBA. 130 pp.

Paruelo, J.M., M.R. Aguiar, R.J.C. León, R.A. Golluscio y W.B. Batista. 1991. The use of satellite imagery in Quantitative Phytogeography: A case study of Patagonia (Argentina). in P.L. Nimis and T.J. Crovello (ed). Quantitative., Approaches to Phytogeography. Task in Vegetation Science 24. Kluwer Academic Publishers, pp 183-204.

Sala, O.E., R.A. Golluscio, W.K. Lauenroth y A. Soriano. 1989. Resource partitioning between shrubs and grasses in the Patagonian steppe. Oecologia 81:501-505.

Soriano, A. 1956. Los distritos florísticos de la Provincia Patagónica. Revista de Investigaciones Agropecuarias (INTA) 10:323- 347.

Soriano, A. y O.E. Sala. 1983. Ecological strategies in a Patagonian arid steppe. Vegetatio 56:9-15.

Soriano, A. y O.E. Sala. 1986. Emergence and survival of Bromus setifolius seedlings in different microsites of a Patagonian arid steppe. Israel Journal of Botany 35:91-100.

Soriano, A., R.A. Golluscio y E.H. Satorre. 1987. Spatial heterogeneity of the root systems of grasses in the patagonian grid steppe. Bulletin of the Torrey Botanical Club 114:103-108.

Soriano, A. y J.M. Paruelo. 1992. Biozones: vegetation units defined by functional characters identifables with the aid of satellite sensor images. Global Ecology and Biogeography Letters, 2:.

Downloads

Published

1992-12-01

How to Cite

Paruelo, J. M., Aguiar, M. R., Golluscio, R. A., & León, R. J. (1992). La Patagonia extrandina: análisis de la estructura y el funcionamiento de la vegetación a distintas escalas. Ecología Austral, 2(2), 123–136. Retrieved from https://ojs.ecologiaaustral.com.ar/index.php/Ecologia_Austral/article/view/1732

Issue

Vol. 2 No. 2 (1992)

Section

Teaching tools

License

Authors retain their rights as follows: 1) by granting the journal the right to its first publication, and 2) by registering the published article with a Creative Commons Attribution License (CC-BY 4.0), which allows authors and third parties to view and use it as long as they clearly mention its origin (citation or reference, including authorship and first publication in this journal). Authors can make other non-exclusive distribution agreements as long as they clearly indicate their origin and are encouraged to widely share and disseminate the published version of their work.