Artículo

Estamos trabajando para incorporar este artículo al repositorio
Consulte el artículo en la página del editor
Consulte la política de Acceso Abierto del editor

Abstract:

The present paper describes vegetation heterogeneity at contrasting spatial scales in order to analyse patterns of floristic diversity and vegetation - environment relations in the Flooding Pampa grasslands of Argentina. The overall grassland flora contains a large proportion of exotic species, which are mostly annual forbs. At a regional scale, there is a latitudinal turnover in relative abundance of major grass tribes, and C3 grasses become increasingly common in grasslands at higher latitudes. The principal gradients in overall vegetation composition were associated with landscape-level changes in topography and soil chemistry. Both native and exotic species richness increased with topographic elevation, and markedly decreased in flood-prone habitats with acidic or saline soils. In remnants of tussock grassland, the predominant physiognomy of the Pampas in pre-settlement times, the presence of the tall native grass Paspalum quadrifarium is a strong determinant of local community structure, reducing the percentage of exotic species. Heterogeneity analysis at the community scale revealed a fine-grained species packing that was in sharp contrast with spatial mosaics observed in other grasslands under livestock grazing. At this scale, spatial variation in floristic composition correlated with changes in various soil parameters, but not with subtle differences in topographic relief. The studied grasslands possess some unique features that contribute towards a better understanding of how current vegetation heterogeneity is controlled by historical, environmental and management factors. © 2005 Società Botanica Italiana.

Registro:

Documento: Artículo
Título:Floristic heterogeneity of Flooding Pampa grasslands: A multi-scale analysis
Autor:Chaneton, E.J.; Perelman, S.B.; León, R.J.C.
Filiación:IFEVA-CONICET, Departamento de Recursos Naturales Y Ambiente, Universidad de Buenos Aires, Argentina
Cátedra de Ecología, Facultad de Agronomía, UBA, Av. San Martín 4453, 1417 Buenos Aires, Argentina
Palabras clave:Exotics; Grazing; Plant community types; Spatial scales; Species richness; Paspalum; Paspalum quadrifarium; Poaceae
Año:2005
Volumen:139
Número:3
Página de inicio:245
Página de fin:254
DOI: http://dx.doi.org/10.1080/11263500500340714
Título revista:Plant Biosystems
Título revista abreviado:Plant Biosyst.
ISSN:11263504
CODEN:GBOIA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_11263504_v139_n3_p245_Chaneton

Referencias:

  • Adler, P.B., Raff, D.A., Lauenroth, W.K., The effect of grazing on the spatial heterogeneity of vegetation (2001) Oecologia, 128, pp. 465-479
  • Alconada, M., Ansin, O.E., Lavado, R.S., Deregibus, V.A., Rubio, G., Gutierrez Boem, F.H., Effect of retention of run-off water and grazing on soil and on vegetation of a temperate humid grassland (1993) Agric Water Manag, 23, pp. 233-246
  • Allen, T.F.H., Starr, T.B., (1982) Hierarchy: Perspectives for Ecological Complexity, , Chicago, London: University of Chicago Press
  • Allen, T.F.H., Hoekstra, T.W., Role of heterogeneity in scaling of ecological systems (1991) Ecological Heterogeneity, pp. 47-68. , Kolasa J, Pickett, STA. editors, New York: Springer
  • Belsky, A.J., Small scale pattern in grassland communities in the Serengeti National Park, Tanzania (1983) Vegetatio, 55, pp. 141-151
  • Cabrera, A.L., (1963) Flora de la Provincia de Buenos Aires, , Buenos Aires: Instituto Nacional de Tecnología Agropecuaria
  • Cabrera, A.L., Zardini, E.M., (1978) Manual de la Flora de Los Alrededores de Buenos Aires, , Buenos Aires: Acme
  • Chaneton, E.J., (1995) Heterogeneidad Espacial de la Vegetacion en Diferentes Escalas:influencia de Las Condiciones Ambientales Y del Pastoreo en Pastizales de la Pampa Deprimida, , MSc Thesis. Buenos Aires: Facultad de Agronomía, Universidad de Buenos Aires
  • Chaneton, E.J., Facelli, J.M., Disturbance effects on plant community diversity: Spatial scales and dominance hierarchies (1991) Vegetatio, 93, pp. 143-155
  • Chaneton, E.J., Facelli, J.M., León, R.J.C., Floristic changes induced by flooding on grazed and ungrazed lowland grasslands in Argentina (1988) J Range Manage, 41, pp. 495-499
  • Chaneton, E.J., Lavado, R.S., Soil nutrients and salinity after long-term grazing exclusion in a Flooding Pampa grassland (1996) J Range Manage, 49, pp. 182-187
  • Chaneton, E.J., Perelman, S.B., Omacini, M., León, R.J.C., Grazing, environmental heterogeneity, and alien plant invasions in temperate pampa grasslands (2002) Biol Inv, 4, pp. 7-24
  • Darwin, C., (1839) Journal of Researches into the Geology and Natural History of the Various Countries Visited by the H.M.S. Beagle, , London: Henry Colburn
  • Facelli, J.M., León, R.J.C., Deregibus, V.A., Community structure in grazed and ungrazed grassland sites in the Flooding Pampa, Argentina (1989) Am Midl Nat, 121, pp. 125-133
  • Gauch Jr., H.G., (1982) Multivariate Analysis in Community Ecology, , Cambridge: Cambridge University Press
  • Ghersa, C.M., Martinez-Ghersa, M.A., León, R.J.C., Cambios en el paisaje pampeano y sus efectos sobre los sistemas de soporte de la vida (1998) Hacia Una Agricultura Productiva Y Sostenible en la Pampa, pp. 38-71. , Solbrig OT, Vainesman L. editors, Buenos Aires: Banco de la Nacion y Orientación Gráfica Ed
  • Grace, J.B., The factors controlling species density in herbaceous plant communities: An assessment (1999) Perspect Plant Ecol Evol System, 2, pp. 1-28
  • Hauman, L., (1928) Modifications de la Flore Argentine Sous l'Action de la Civilisation, , Academie Royale de Belgique. Collection in-4, Deuxieme Serie, t. IX, Bruxelles
  • Hudson, W.H., (1892) The Naturalist in la Plata, , London: Chapman and Hall
  • Jongman, R.H.G., Ter Braak, C.J.F., Van Tongeren, O.F.R., (1987) Data Analysis in Community and Landscape Ecology, , Wageningen: Pudoc
  • Keddy, P.A., Assembly and response rules: Two goals for predictive community ecology (1992) J Veg Sci, 3, pp. 157-164
  • Laterra, P., Vignolo, O.R., Linares, M.P., Giaquinta, A., Maceira, N., Cumulative effects of fire on tussock pampa grassland (2003) J Veg Sci, 14, pp. 43-54
  • Lavado, R.S., Taboada, M.A., Water, salt and sodium dynamics in a natraquoll in Argentina (1988) Catena, 15, pp. 577-594
  • León, R.J.C., Rusch, G.M., Oesterheld, M., Pastizales pampeanos - Impacto agropecuario (1984) Phytocoenologia, 12, pp. 201-218
  • Levin, S.A., The problem of pattern and scale in ecology (1992) Ecology, 73, pp. 1943-1967
  • Lonsdale, W.M., Global patterns of plant invasions and the concept of invasibility (1999) Ecology, 80, pp. 1522-1536
  • Mack, R.N., Simberloff, D., Lonsdale, W.M., Evans, H., Clout, M., Bazzaz, F.A., Biotic invasions: Causes, epidemiology, global consequences, and control (2000) Ecol Appl, 10, pp. 689-710
  • Magurran, A.E., (1988) Ecological Diversity and its Measurement, , Princeton, NJ, USA: Princeton University Press
  • McCune, B., Mefford, M.J., (1999) Multivariate Analysis of Ecological Data, , Gleneden Beach, Oregon, USA: MjM Software
  • Mueller-Dombois, D., Ellemberg, H., (1974) Aims and Methods of Vegetation Ecology, , New York: John Wiley & Sons
  • Olff, H., Ritchie, M.E., Effects of herbivores on grassland plant diversity (1998) Trends Ecol Evol, 13, pp. 261-265
  • Palmer, M.W., Putting things in even better order: The advantages of canonical correspondence analysis (1993) Ecology, 74, pp. 2215-2230
  • Parodi, L., La estepa pampeana. la vegetación de la República Argentina (1947) An Soc Arg Est Geogr, 8, pp. 143-207
  • Perelman, S.B., León, R.J.C., Oesterheld, M., Cross-scale vegetation patterns of Flooding Pampa grasslands (2001) J Ecol, 89, pp. 562-577
  • Perelman, S.B., Burkart, S.E., León, R.J.C., The role of a native tussock grass (Paspalum quadrifarium Lam.) in structuring plant communities in the Flooding Pampa, Argentina (2003) Biodiv Conserv, 12, pp. 225-238
  • Rapoport, E.H., The flora of Buenos Aires: Low richness or mass extinction? (1996) Int J Ecol Environ Sci, 22, pp. 217-242
  • Reed, R.A., Peet, R.K., Palmer, M.W., White, P.S., Scale dependence of vegetation-environment correlations - A case study of a North-Carolina Piedmont woodland (1993) J Veg Sci, 4, pp. 329-340
  • Richardson, D.M., Pysek, P., Rejmánek, M., Barbour, M.G., Panetta, F.D., West, C.J., Naturalization and invasion of alien plants: Concepts and definitions (2000) Div Distrib, 6, pp. 93-107
  • Ricklefs, R., Community diversity: Relative roles of local and regional processes (1987) Science, 235, pp. 167-171
  • Sala, O.E., Oesterheld, M., León, R.J.C., Soriano, A., Grazing effects upon plant community structure in subhumid grasslands of Argentina (1986) Vegetatio, 67, pp. 27-32
  • Sala, O.E., Chapin III, F.S., Armesto, J.J., Berlow, R., Bloomfield, J., Dirzo, R., Global biodiversity scenarios for the year 2100 (2000) Science, 287, pp. 1770-1774
  • Sanchez, E., Arriaga, M.O., El síndrome Kranz en Poaceae de la flora Argentina (1990) Parodiana, 6, pp. 73-102
  • Shea, K., Chesson, P., Community ecology theory as a framework for biological invasions (2002) Trends Ecol Evol, 17, pp. 170-176
  • Shmida, A., Wilson, M.V., Biological determinants of species diversity (1985) J Biogeog, 12, pp. 1-20
  • Söyrinki, N., On the alien flora of the province of Buenos Aires, Argentina (1991) Ann Bot Fenn, 28, pp. 59-79
  • Soriano, A., Río de la Plata grasslands (1992) Ecosystems of the World 8A, pp. 367-407. , Coupland RT, editor, Natural grasslands: introduction and western hemisphere Amsterdam: Elsevier
  • Weiher, E., Keddy, P.A., The assembly of experimental wetland plant communities (1995) Oikos, 73, pp. 323-335
  • Whittaker, R.H., Evolution of species diversity in land communities (1977) Evol Biol, 10, pp. 1-67
  • Wiens, J.A., Spatial scaling in ecology (1989) Funct Ecol, 3, pp. 385-397

Citas:

---------- APA ----------
Chaneton, E.J., Perelman, S.B. & León, R.J.C. (2005) . Floristic heterogeneity of Flooding Pampa grasslands: A multi-scale analysis. Plant Biosystems, 139(3), 245-254.
http://dx.doi.org/10.1080/11263500500340714
---------- CHICAGO ----------
Chaneton, E.J., Perelman, S.B., León, R.J.C. "Floristic heterogeneity of Flooding Pampa grasslands: A multi-scale analysis" . Plant Biosystems 139, no. 3 (2005) : 245-254.
http://dx.doi.org/10.1080/11263500500340714
---------- MLA ----------
Chaneton, E.J., Perelman, S.B., León, R.J.C. "Floristic heterogeneity of Flooding Pampa grasslands: A multi-scale analysis" . Plant Biosystems, vol. 139, no. 3, 2005, pp. 245-254.
http://dx.doi.org/10.1080/11263500500340714
---------- VANCOUVER ----------
Chaneton, E.J., Perelman, S.B., León, R.J.C. Floristic heterogeneity of Flooding Pampa grasslands: A multi-scale analysis. Plant Biosyst. 2005;139(3):245-254.
http://dx.doi.org/10.1080/11263500500340714