Grass-to-grass protection from grazing in a semi-arid steppe. Facilitation, competition, and mass effect

Oikos

Volumn 107, Issue 3, 2004, Pages 576-582

  Oesterheld, Martín ^a   Oyarzábal, Mariano ^a  

^a UNIVERSIDAD DE BUENOS AIRES   (Argentina)

Author keywords

[No Author keywords available]

Indexed keywords

GRAZING; INTERSPECIFIC INTERACTION; PALATABILITY; REFUGE; SEMIARID REGION; SPATIAL ANALYSIS;

ANIMALIA; BROMUS; OVIS ARIES; POACEAE;

EID: 8744304808     PISSN: 00301299     EISSN: None     Source Type: Journal    
DOI: 10.1111/j.0030-1299.2004.13442.x     Document Type: Article

References (28)

1. Aguiar, M. R. and Sala, O. E. 1994. Competition, facilitation, seed distribution and the origin of patches in a Patagonian steppe. - Oikos 70: 26-34.
2. Aguiar, M. R. and Sala, O. E. 1997. Seed distribution constraints the dynamics of the Patagonian steppe. - Ecology 78: 93-100.
3. Aguiar, M. R., Soriano, A. and Sala, O. E. 1992. Competition and facilitation in the recruitment of seedlings in Patagonian steppe. - Funct. Ecol. 6: 66-70.
4. Bertness, M. D. and Callaway, R. M. 1994. Positive interactions in communities. - Trends Ecol. Evol. 9: 191-193.
5. Bonvissuto, G. L., Moricz, E., Astibia, O. et al. 1983. Resultados preliminares sobre los hábitos dietarios de ovinos en un pastizal semidesértico de Patagonia. - IDIA 36: 243-253.
6. Brown, R. L. and Fridley, J. D. 2003. Control of plant species diversity and community invasibility by species immigration: seed richness versus seed density. - Oikos 102: 15-24.
7. Callaway, R. M. 1995. Positive interactions among plants. - Bot. Rev. 61: 306-349.
8. Callaway, R. M. and Walker, L. R. 1997. Competition and facilitation: a synthetic approach to interactions in plant communities. - Ecology 78: 1958-1965.
9. Callaway, R. M., Kikvidze, Z. and Kikodze, D. 2000. Facilitation by unpalatable weeds may conserve plant diversity in overgrazed meadows in the Caucasus Mountains. - Oikos 89: 275-282.
10. Choler, P., Michalet, R. and Callaway, R. M. 2001. Facilitation and competition on gradients in alpine plant communities. - Ecology 82: 3295-3308.
11. Eriksson, O. 1996. Regional dynamics of plants: a review of evidence for remnant, source-sink and metapopulations. - Oikos 77: 248-258.
12. Golluscio, R. A., Deregibus, V. A. and Paruelo, J. M. 1998a. Sustainability and range management in the Patagonian steppes. - Ecol. Austral 8: 265-284.
13. Golluscio, R., Paruelo, J., Mercau, J. et al. 1998b. Urea supplementation effects on the utilization of low-quality forage and lamb production in Patagonian rangelands. - Grass Forage Sci. 53: 47-56.
14. Hurlbert, S. 1984. Pseudoreplication and the design of ecological field experiments. - Ecol. Monographs 2: 187-211.
15. McNaughton, S. J. 1978. Serengeti ungulates: feeding selectivity influences the effectiveness of plant defense guilds. - Science 199: 806-807.
16. Milchunas, D. G. and Noy-Meir, I. 2002. Grazing refuges, external avoidance of herbivory and plant diversity. - Oikos 99: 113-130.
17. Müller, M. J. 1982. Selected climatic data for a global set of standard stations for vegetation science. - W. Junk, p. 455.
18. Naranjo, C. A., Arias, F. H., Gil, F. E. et al. 1990. Bromus pictus of the B. setifolius complex (section Pnigma): numerical taxonomy and chromosome evidence for species rank. - Can. J. Bot. 68: 2493-2500.
19. Paruelo, J. M., Beltrán, A., Jobbagy, E. G. et al. 1998. The climate of Patagonia: general patterns and controls on biotic processes. - Ecol. Austral 8: 85-101.
20. Perelman, S. B., León, R. J. C. and Bussacca, J. P. 1997. Floristic changes related to grazing intensity in a Patagonian shrub steppe. - Ecography 20: 400-406.
21. Rebollo, S., Milchunas, D. G., Noy-Meir, I. et al. 2002. The role of a spiny plant refuge in structuring grazed shortgrass steppe plant communities. - Oikos 98: 53-64.
22. Semmartin, M., Aguiar, M. R., Distel, R. A. et al. 2004. Litter quality and nutrient cycling affected by grazing-induced species replacements along a precipitation gradient. - Oikos 107: 149-161.
23. Shmida, A. and Wilson, M. V. 1985. Biological determinants of species diversity. - J. Biogeogr. 12: 1-20.
24. Soriano, A. 1956. Aspectos ecologicos y pasturiles de la vegetación patagónica relacionados con su estado y capacidad de recuperación. - Revista Investigaciones Agrícolas 10: 349-372.
25. Soriano, A. 1983. Deserts and semi-deserts of Patagonia. - In: West, N. (ed.), Temperate deserts and semi-deserts. Elsevier, pp. 423-460.
26. Soriano, A. and Sala, O. E. 1986. Emergence and survival of Bromus setifolius seedlings in different microsites of a Patagonian arid steppe. - Isr. J. Bot. 35: 91-100.
27. Soriano, A., Sala, O. E. and Perelman, S. B. 1994. Patch structure and dynamics in a Patagonian arid steppe. - Vegetatio 111: 127-135.
28. Stuth, J. W. 1991. Foraging behavior. - In: Heithschmidt, R. K. and Stuth, J. W. (eds), Grazing management. An ecological perspective. Timber Press, pp. 65-84.