Navegar

Colección

Datos Estadísticas

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:

Most arid and semiarid ecosystems around the world have been grazed by domestic herbivores. In many cases, grazing has degraded vegetation and soil. The possibility of restoring rangeland's good condition depends, partially, on the ability of remaining populations of desirable species to recover. In this work, we studied the exact spatial distribution of remaining palatable adult plants in fields with different grazing history (i.e., seed sources) and quantified the effect of interspecific competition with less palatable grasses on seedling emergence and survival (i.e., regeneration constraints). We worked in a Patagonian steppe composed of shrubs and perennial tussock grasses that has been grazed by sheep for >100 years. In order to evaluate the location of seed sources, we mapped the location of a palatable species (Bromus pictus Hook.) in paddocks with different long-term grazing intensity. In addition, we sowed seeds of B. pictus close to 2 dominant, less palatable grasses in 2 different years to evaluate the role of interspecific interactions on regeneration and the effects of climate variability. The proportion of B. pictus plants growing in protected places near less palatable species significantly increased with grazing intensity. Competition effects on emergence, survival, and growth depended on the year's moisture regime. During the dry year, competition with less palatable grasses reduced the emergence, survival, height, and number of leaves of palatable grass seedlings by 30%, 55%, 48%, and 40%, respectively. In the wet year, there were no effects of competition on emergence and height, and the effects on survival depended on the species of the less palatable neighbors. Our study supports the idea that management for recovering degraded rangelands in this ecosystem may benefit from considering the spatial distribution of remaining plants. It also indicates that the susceptibility of demographic processes to interspecific competition depends on the year and neighbor species.

Registro:

Documento: Artículo
Título:Interspecific competition interacts with the spatial distribution of a palatable grass to reduce its recruitment
Autor:Cipriotti, P.A.; Aguiar, M.R.
Filiación:Cátedra de Ecología-IFEVA, Departamento de Recursos Naturales Y Ambiente, Universidad de Buenos Aires/CONICET, Avda San Martin 4453, C1417DNS, Buenos Aires, Argentina
Palabras clave:Associations; Bromus pictus; Climatic variation; Patagonian steppes; Rangelands; Recovery; Refuges; Spatial patterns; climate change; palatability; rangeland; spatial distribution; Patagonia; South America; Western Hemisphere; World; Arida; Bromus; Bromus pictus; Ovis aries; Poaceae
Año:2005
Volumen:58
Número:4
Página de inicio:393
Página de fin:399
DOI: http://dx.doi.org/10.2111/1551-5028(2005)058[0393:ICIWTS]2.0.CO;2
Título revista:Rangeland Ecology and Management
Título revista abreviado:Rangeland Ecol. Manage.
ISSN:15507424
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15507424_v58_n4_p393_Cipriotti

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
  • Aguiar, M.R., Cipriotti, P.A., Batista, W.B., Premoli, A.C., Viabilidad de poblaciones de gramíneas patagónicas en peligro de extinción por sobrepastoreo (1999) Libro de Resúmenes de la IXX Reunión Argentina de Ecología, , Tucumán, Argentina
  • Aguiar, M.R., Sala, O.E., Seed distribution constrains the dynamics of the Patagonian steppe (1997) Ecology, 78, pp. 93-100
  • Aguiar, M.R., Soriano, A., Sala, O.E., Competition and facilitation in the recruitment of seedlings in the Patagonian steppe (1992) Functional Ecology, 6, pp. 66-70
  • Aguilera, M.O., Lauenroth, W.K., Seedling establishment in adult neighbourhoods: Intraspecific constraints in the regeneration of the bunch-grass Bouteloua gracilis (1993) Journal of Ecology, 81, pp. 253-261
  • Archer, S., Have southern Texas savannas been converted to woodlands in recent history? (1989) American Naturalist, 134, pp. 545-561
  • Archer, S., Development and stability of grass/woody mosaics in a subtropical savanna parkland, Texas, U.S.A. (1990) Journal of Biogeography, 17, pp. 453-462
  • Bakker, J.P., De Leeuw, J., Van Wieren, S.E., Micropatterns in grassland vegetation created and sustained by sheep-grazing (1983) Vegetatio, 55, pp. 153-161
  • Beecham, J.A., Oom, S.P., Hester, A.J., The role of animal decisions in the development of vegetation mosaics. Heterogeneity in landscape ecology: Pattern and scale (1999) Proceedings of the 8th Annual Conference of the International Association for Landscape Ecology, pp. 121-130. , 6-8 September 1999; Bristol, UK
  • Belsky, J.A., Effects of grazing, competition, disturbance and fire on species composition and diversity in grassland communities (1992) Journal of Vegetation Science, 3, pp. 187-200
  • Berg, G., Esselink, P., Groenewg, M., Kiehl, K., Micropatterns in Festuca rubra dominated vegetation induced by sheep grazing (1997) Plant Ecology, 132, pp. 1-14
  • Bonvissuto, G., Moricz De Tecso, O., Astibia, O., Anchorena, J., Resultados preliminares sobre los hábitos dietarios de ovinos en un pastizal semidesértico de Patagonia (1983) Boletín Informativo de Investigación Agropecuaria (INTA), 36, pp. 243-253
  • Brown, R.J., Archer, S., Woody plant invasion of grasslands: Establishment of honey mesquite (Prosopis glandulosa) on sites differing in herbaceous biomass and grazing history (1989) Oecologia, 80, pp. 19-26
  • Callaway, R.M., Kikvidze, Z., Kikodze, D., Facilitation by unpalatable weeds may conserve plant diversity in overgrazed meadows in the Caucasus Mountains (2000) Oikos, 89, pp. 275-282
  • Cipriotti, P.A., Aguiar, M.R., Effects of grazing on patch structure in a semi-arid two-phase vegetation mosaic (2005) Journal of Vegetation Science, 16, pp. 57-66
  • Crawley, M.J., Rabbit grazing, competition and seedling recruitment in acid grassland (1990) Journal of Applied Ecology, 27, pp. 803-820
  • Dale, M.R.T., Zbigniewicz, M.W., Spatial pattern in boreal shrub communities: Effects of a peak in herbivore density (1997) Canadian Journal of Botany, 75, pp. 1342-1348
  • Defosse, G.E., Robberecht, R., Bertiller, M.B., Seedling dynamics of Festuca spp. in a grassland of Patagonia, Argentina, as affected by competition, microsites and grazing (1997) Journal of Range Management, 50, pp. 73-79
  • Eccles, N., Lamont, B., Esler, K., Lamont, H., Relative performance of clumped vs. experimentally isolated plants in a South African winter-rainfall desert community (2002) Plant Ecology, 159, pp. 117-117
  • Fernández Aldúncin, R.J., Sala, O.E., Golluscio, R.A., Woody and herbaceous aboveground production of a Patagonian steppe (1991) Journal of Range Management, 44, pp. 434-437
  • Fowler, N.L., The role of competition in plant communities in arid and semiarid regions (1986) Annual Review in Ecology and Systematics, 17, pp. 89-110
  • Fowler, N.L., The joint effects of grazing, competition, and topographic position on six savanna grasses (2002) Ecology, 83, pp. 2477-2488
  • Goldberg, D.E., Barton, A.M., Patterns and consequences of interspecific competition in natural communities: Field experiments with plants (1992) American Naturalist, 139, pp. 771-801
  • Goldberg, D.E., Rajaniemi, T., Gurevitch, J., Stewart-Oaten, A., Empirical approaches to quantifying interaction intensity: Competition and facilitation along productivity gradients (1999) Ecology, 80, pp. 1118-1131
  • Golluscio, R.A., León, R.J.C., Perelman, S.B., Caracterización fitosociológica de la estepa del oeste de Chubut, su relación con el gradiente ambiental (1982) Boletín de la Sociedad Argentina de Botánica, 21, pp. 299-324
  • Golluscio, R.A., Sala, O.E., Plant functional types and ecological strategies in Patagonian forbs (1993) Journal of Vegetation Science, 4, pp. 839-846
  • Jeltsch, F., Milton, S.J., Dean, W.R.J., Van Rooyen, N., Harcombe, M.W., Simulated pattern formation around artificial waterholes in the semi-arid Kalahari (1997) Journal of Vegetation Science, 8, pp. 177-188
  • Jobbágy, E.G., Paruelo, J.M., León, R.J.C., Estimación del régimen de precipitatción a partir de la distancia a la cordillera en el noroeste de la Patagonia (1995) Ecología Austral, 5, pp. 47-53
  • Jobbágy, E.G., Sala, O.E., Controls of grass and shrubs aboveground production in the Patagonian steppe (2000) Ecological Applications, 10, pp. 541-549
  • León, R.J.C., Bran, D., Collantes, M., Paruelo, J.M., Soriano, A., Grandes unidades de vegetación de la Patagonia extra andina (1998) Ecología Austral, 8, pp. 125-144
  • McNaughton, S.J., Biodiversity and function of grazing ecosystems (1993) Biodiversity and Ecosystem Function, pp. 361-383. , Shulze and H. A. Mooney [eds.]. Berlin, Germany: Springer-Verlag
  • Milchunas, D.G., Lauenroth, W.K., Chapman, P.L., Kazempour, M.K., Effects of grazing, topography, and precipitation on the structure of a semiarid grassland (1989) Vegetatio, 80, pp. 11-24
  • Moreho, A.S., Distel, R.A., Competitive interactions between palatable and unpalatable grasses native to a temperate semi-arid grassland of Argentina (1997) Plant Ecology, 130, pp. 155-161
  • Oesterheld, M., Loreti, J., Semmartin, M., Paruelo, J.M., Grazing, fire, and climate effects on primary productivity of grasslands and savannas (1999) Ecosystems of Disturbed Ground, pp. 287-306. , Walker [ed.]. Amsterdam: Elsevier
  • Oesterheld, M., Oyarzábal, M., Grass-to-grass protection from grazing in a semi-arid steppe. Facilitation, competition, and mass effect (2004) Oikos, 107, pp. 576-582
  • Owens, M.K., Norton, B.E., Interactions of grazing and plant protection on basin big sagebrush (Artemisia tridentata ssp. tridentata) seedling survival (1992) Journal of Range Management, 45, pp. 257-262
  • Papatheodorou, E., Pantis, J.D., Stamou, G.P., The effects of grazing on growth, spatial pattern and age structure of Quercus coccifera (1993) Acta Oecologica, 14, pp. 589-602
  • Paruelo, J.M., Aguiar, M.R., Golluscio, R.A., Soil water availability in the Patagonian arid steppe: Gravel content effect (1988) Arid Soil Research Rehabilitation, 2, pp. 67-74
  • Perelman, S.B., León, R.J.C., Bussacca, J.P., Floristic changes related to grazing intensity in a Patagonian shrub steppe (1997) Ecography, 20, pp. 400-406
  • Rebollo, S., Milchunas, D.G., Noy-Meir, I., Chapman, P.L., The role of a spiny plant refuge in structuring grazed shortgrass steppe plant communities (2002) Oikos, 98, pp. 53-64
  • Rotundo, J.L., Aguiar, M.R., Vertical seed distribution in soil constrains regeneration processes of Bromus pictus in a Patagonian steppe (2004) Journal of Vegetation Science, 15, pp. 514-522
  • Schlesinger, W.H., Reynolds, J.F., Cunningham, G.L., Huenneke, L.F., Jarrell, W.M., Ross, V.A., Whitford, W.G., Biological feedbacks in global desertification (1990) Science, 247, pp. 1043-1047
  • Somlo, R., Pelliza, A., Willems, P., Nakamatsu, V., Manero, A., (1997) Atlas Dietario de Herbivoros Patagónicos, p. 109. , Chubut, Prodesar GTZ-INTA, FAO
  • Soriano, A., Los distritos florísticos de la provincia Patagónica (1956) Revista de Investigación Agropecuaria, 10 (4), pp. 323-347
  • Soriano, A., Movia, C.P., León, R.J.C., Deserts and semideserts of Patagonia (1983) Temperate Deserts and Semideserts, pp. 423-457. , N. E. West [ed.]. Amsterdam: Elsevier Scientific Publishing Company
  • Soriano, A., Sala, O.E., Emergence and survival of Bromus setifolius seedlings in different microsites of a Patagonian arid steppe (1986) Israel Journal of Botany, 35, pp. 91-100
  • Steel, R.G.D., Torrie, J.M., (1988) Principles and Procedures of Statistics, p. 622. , New York, NY: McGraw-Hill
  • Tielbörger, K., Kadmon, R., Temporal environmental variation tips the balance between facilitation and interference in desert plants (2000) Ecology, 81, pp. 1544-1553
  • Van Auken, O.W., Shrub invasions of North American semiarid grasslands (2000) Annual Review of Ecology and Systematics, 31, pp. 197-215
  • Walker, B.H., Ludwig, D., Holling, C.S., Peterman, R.M., Stability of semi-arid savanna grazing systems (1981) Journal of Ecology, 69, pp. 473-498
  • Welden, C.W., Slauson, W.L., The intensity of competition versus its importance: An overlooked distinction and some implications (1986) The Quarterly Review of Biology, 61, pp. 23-44
  • Westoby, M., Elements of a theory of vegetation dynamics in arid rangelands (1980) Israel Journal of Botany, 28, pp. 169-194

Citas:

---------- APA ----------
Cipriotti, P.A. & Aguiar, M.R. (2005) . Interspecific competition interacts with the spatial distribution of a palatable grass to reduce its recruitment. Rangeland Ecology and Management, 58(4), 393-399.
http://dx.doi.org/10.2111/1551-5028(2005)058[0393:ICIWTS]2.0.CO;2
---------- CHICAGO ----------
Cipriotti, P.A., Aguiar, M.R. "Interspecific competition interacts with the spatial distribution of a palatable grass to reduce its recruitment" . Rangeland Ecology and Management 58, no. 4 (2005) : 393-399.
http://dx.doi.org/10.2111/1551-5028(2005)058[0393:ICIWTS]2.0.CO;2
---------- MLA ----------
Cipriotti, P.A., Aguiar, M.R. "Interspecific competition interacts with the spatial distribution of a palatable grass to reduce its recruitment" . Rangeland Ecology and Management, vol. 58, no. 4, 2005, pp. 393-399.
http://dx.doi.org/10.2111/1551-5028(2005)058[0393:ICIWTS]2.0.CO;2
---------- VANCOUVER ----------
Cipriotti, P.A., Aguiar, M.R. Interspecific competition interacts with the spatial distribution of a palatable grass to reduce its recruitment. Rangeland Ecol. Manage. 2005;58(4):393-399.
http://dx.doi.org/10.2111/1551-5028(2005)058[0393:ICIWTS]2.0.CO;2