The independent and interactive effects of tree-tree establishment competition and fire on savanna structure and dynamics

American Naturalist

Volumn 175, Issue 3, 2010, Pages

  Calabrese, Justin M ^a   Vazquez, Federico ^b   López, Cristóbal ^b   Miguel, Maxi San ^b   Grimm, Volker ^a  

^a HELMHOLTZ CENTRE FOR ENVIRONMENTAL RESEARCH UFZ   (Germany)

^b UNIVERSITAT DE LES ILLES BALEARS   (Spain)

Author keywords

Establishment; Grass dependent fire; Mean field approximation; Nonlinear interaction; Pair approximation; Spatially explicit model

Indexed keywords

BIODIVERSITY; CLUSTER ANALYSIS; COMPETITION (ECOLOGY); ECONOMIC ANALYSIS; EXTINCTION; FIRE BEHAVIOR; GEOGRAPHICAL VARIATION; POPULATION STRUCTURE; SAVANNA; SEMIARID REGION; TERRESTRIAL ECOSYSTEM;

ARTICLE; ECOSYSTEM; FIRE; HISTOLOGY; PHYSIOLOGY; PLANT ROOT; POPULATION DENSITY; POPULATION DYNAMICS; TREE;

ECOSYSTEM; FIRES; PLANT ROOTS; POPULATION DENSITY; POPULATION DYNAMICS; TREES;

EID: 77949516899     PISSN: 00030147     EISSN: None     Source Type: Journal    
DOI: 10.1086/650368     Document Type: Article

References (64)

1. Barot, S., J. Gignoux, and J.-C. Menaut. 1999. Demography of a savanna palm tree: predictions from comprehensive spatial pattern analyses. Ecology 80:1987-2005.
2. Baxter, P. W. J., and W. M. Getz. 2005. A model-framed evaluation of elephant effects on tree and fire dynamics in African savannas. Ecological Applications 15:1331-1341.
3. Belsky, A. J. 1994. Influences of trees on savanna productivity: tests of shade, nutrients, and tree-grass competition. Ecology 75:922-932.
4. Belsky, A. J., R. G. Amundson, J. M. Duxbury, S. J. Riha, A. R. Ali, and S. M. Mwonga. 1989. The effects of trees on their physical, chemical and biological environments in a semi-arid savanna in Kenya. Journal of Applied Ecology 26:1005-1024.
5. Belsky, A. J., S. M. Mwonga, R. G. Amundson, J. M. Duxbury, and A. R. Ali. 1993. Comparative effects of isolated trees on their undercanopy environments in high-and low-rainfall savannas. Journal of Applied Ecology 30:143-155.
6. Boaler, S. B., and K. C. Sciwale. 1966. Ecology of a Miombo site, Lupa North Forest Reserve, Tanzania. III. Effects on the vegetation of local cultivation practices. Journal of Ecology 54:577-587.
7. Bolker, B. M. 2008. Ecological models and data in R. Princeton University Press, Princeton, NJ.
8. Bolker, B. M., S. W. Pacala, and S. A. Levin. 2000. Moment methods for ecological processes in continuous space. Pages 388-411 in U. Dieckmann, R. Law, and J. A. J. Metz, eds. The geometry of ecological interactions: simplifying spatial complexity. Cambridge University Press, Cambridge.
9. Bond, W. J. 2008. What limits trees in C4 grasslands and savannas? Annual Review of Ecology, Evolution, and Systematics 39:641-659.
10. Bond, W. J., G. F. Midgley, and F. I. Woodward. 2003. What controls South African vegetation: climate or fire? South African Journal of Botany 69:79-91.
11. Bucini, G., and N. P. Hanan. 2007. A continental-scale analysis of tree cover in African savannas. Global Ecology and Biogeography 16:593-605.
12. Campbell, J. B. 2006. Introduction to remote sensing. 4th ed. Guil-ford, New York.
13. Casper, B. B., H. J. Schenk, and R. B. Jackson. 2003. Defining a plant's belowground zone of influence. Ecology 84:2313-2321.
14. Caylor, K. K., H. H. Shugart, P. R. Dowty, and T. M. Smith. 2003. Tree spacing along the Kalahari transect in southern Africa. Journal of Arid Environments 54:281-296.
15. D'Odorico, P., F. Laio, and L. Ridolfi. 2006. A probabilistic analysis of fire-induced tree-grass coexistence in savannas. American Naturalist 167:E79-E87.
16. Ellner, S. P. 2001. Pair approximation for lattice models with multiple interaction scales. Journal of Theoretical Biology 210:435-447.
17. Grimm, V., E. Revilla, U. Berger, F. Jeltsch, W. M. Mooij, S. F. Rails-back, H. H. Thulke, J. Weiner, T. Wiegand, and D. L. DeAngelis. 2005. Pattern-oriented modeling of agent-based complex systems: lessons from ecology. Science 310:987-991.
18. Gutiérrez, J. R., and E. R. Fuentes. 1979. Evidence for intraspecific competition in the Acacia caven (leguminosae) savanna of Chile. Oecologia Plantarum 14:151-158.
19. Hanan, N. P., W. B. Sea, G. Dangelmayr, and N. Govender. 2008. Do fires in savannas consume woody biomass? a comment on approaches to modeling savanna dynamics. American Naturalist 171:851-856
20. Hernández-Garća, E., and C. López. 2004. Clustering, advection, and patterns in a model of population dynamics with neighborhood-dependent rates. Physical Review E 70:016216.
21. Hiebeler, D. 2005. Spatially correlated disturbances in a locally dispersing population model. Journal of Theoretical Biology 232:143-149.
22. Higgins, S. I., W. J. Bond, and W. S. W. Trollope. 2000. Fire, re-sprouting and variability: a recipe for grass-tree coexistence in savanna. Journal of Ecology 88:213-229.
23. Higgins, S. I., W. J. Bond, E. C. February, A. Bronn, D. I. W. Euston-Brown, B. Enslin, N. Govender, et al. 2007. Effects of four decades of fire manipulation on woody vegetation structure in savanna. Ecology 88:1119-1125.
24. Hochberg, M. E., J. C. Menaut, and J. Gignoux. 1994. The influences of tree biology and fire in the spatial structure of the West African savannah. Journal of Ecology 82:217-226.
25. Holdo, R. M. 2005. Stem mortality following fire in Kalahari sand vegetation: effects of frost, prior damage, and tree neighbourhoods. Plant Ecology 180:77-86.
26. -. 2006. Elephant herbivory, frost damage and topkill in Kalahari sand woodland savanna trees. Journal of Vegetation Science 17: 509-518.
27. Holdo, R. M., R. D. Holt, and J. M. Fryxell. 2009. Grazers, browsers, and fire influence the extent and spatial pattern of tree cover in the Serengeti. Ecological Applications 19:95-109.
28. Jeltsch, F., S. J. Milton, W. R. J. Dean, and N. van Rooyen. 1996. Tree spacing and coexistence in semiarid savannas. Journal of Ecology 84:583-595.
29. Jeltsch, F., S. J. Milton, W. R. J. Dean, N. van Rooyen, and K. A. Moloney. 1998. Modelling the impact of small-scale heterogeneities on tree-grass coexistence in semi-arid savannas. Journal of Ecology 86:780-793.
30. Jeltsch, F., K. Moloney, and S. J. Milton. 1999. Detecting process from snapshot pattern: lessons from tree spacing in the southern Kalahari. Oikos 85:451-466.
31. Jeltsch, F., G. E. Weber, and V. Grimm. 2000. Ecological buffering mechanisms in savannas: a unifying theory of long-term tree-grass coexistence. Plant Ecology 150:161-171.
32. Kennedy, A. D., and A. L. F. Potgieter. 2003. Fire season affects size and architecture of Colophospermum mopane in southern African savannas. Plant Ecology 167:179-192.
33. Marro, J., and R. Dickman. 1999. Nonequilibrium phase transitions in lattice models. Cambridge University Press, Cambridge.
34. Matsuda, H., N. Ogita, A. Sasaki, and K. Sato. 1992. Statistical mechanics of population: the lattice Lotka-Volterra model. Progress of Theoretical Physics 88:1035-1049.
35. Menaut, J. C., J. Gignoux, C. Prado, and J. Clobert. 1990. Tree community dynamics in a humid savanna of the Ivory Coast: modeling the effects of fire and competition with grass and neighbors. Journal of Biogeography 17:471-481.
36. Meyer, K. M., K. Wiegand, D. Ward, and A. Moustakas. 2007. SATCHMO: a spatial simulation model of growth, competition, and mortality in cycling savanna patches. Ecological Modelling 209:377-391.
37. Meyer, K. M., D. Ward, K. Wiegand, and A. Moustakas. 2008. Multi-proxy evidence for competition between savanna woody species. Perspectives in Plant Ecology, Evolution, and Systematics 10:63-72.
38. Moustakas, A., M. Guenther, K. Wiegand, K.-H. Mueller, D. Ward, K. M. Meyer, and F. Jeltsch. 2006. Long-term mortality patterns of the deep-rooted Acacia erioloba: the middle class shall die! Journal of Vegetation Science 17:473-480.
39. Moustakas, A., K. Wiegand, S. Getzin, D. Ward, K. M. Meyer, M. Guenther, and K.-H. Mueller. 2008. Spacing patterns of an Acacia tree in the Kalahari over a 61-year period: how clumped becomes regular and vice versa. Acta Oecologica 33:355-364.
40. Neke, K. S., N. Owen-Smith, and E. T. F. Witkowski. 2006. Comparative resprouting response of savanna woody plant species following harvesting: the value of persistence. Forest Ecology and Management 232:114-123.
41. Pellew, R. A. P. 1983. The impacts of elephant, giraffe and fire upon the Acacia tortilis woodlands of the Serengeti. African Journal of Ecology 21:41-74.
42. Peterson, D. W., and P. B. Reich. 2001. Prescribed fire in oak savanna: fire frequency effects on stand structure and dynamics. Ecological Applications 11:914-927.
43. Ross, S. M. 2000. Introduction to probability models. 7th ed. Academic Press, San Diego, CA.
44. Sankaran, M., J. Ratnam, and N. P. Hanan. 2004. Tree-grass coexistence in savannas revisited: insights from an examination of assumptions and mechanisms invoked in existing models. Ecology Letters 7:480-490.
45. Sankaran, M., N. P. Hanan, R. J. Scholes, J. Ratnam, D. J. Augustine, B. S. Cade, J. Gignoux, et al. 2005. Determinants of woody cover in African savannas. Nature 438:846-849.
46. Sankaran, M., J. Ratnam, and N. Hanan. 2008. Woody cover in African savannas: the role of resources, fire and herbivory. Global Ecology and Biogeography 17:236-245.
47. Sarmiento, G. 1984. The ecology of Neotropical savannas. Harvard University Press, Cambridge, MA.
48. Scanlon, T. M., K. K. Caylor, S. A. Levin, and I. Rodriguez-Iturbe. 2007. Positive feedbacks promote power-law clustering of Kalahari vegetation. Nature 449:209-212.
49. Scheiter, S., and S. I. Higgins. 2007. Partitioning of root and shoot competition and the stability of savannas. American Naturalist 170: 587-601.
50. Schenk, H. J., and R. B. Jackson. 2002. Rooting depths, lateral root spreads and below-ground/above-ground allometries of plants in water-limited ecosystems. Journal of Ecology 90:480-494.
51. Scholes, R. J., and S. R. Archer. 1997. Tree-grass interactions in savannas. Annual Review of Ecology and Systematics 28:517-544.
52. Skarpe, C. 1991. Spatial patterns and dynamics of woody vegetation in an arid savanna. Journal of Vegetation Science 2:565-572.
53. Smith, T. M., and P. S. Goodman. 1986. The effect of competition on the structure and dynamics of Acacia savannas in southern Africa. Journal of Ecology 74:1031-1044.
54. Smith, T. M., and K. Grant. 1986. The role of competition in the spacing of trees in a Burkea africana-Terminalia sericea savanna. Biotropica 18:219-223.
55. Stanley, H. E. 1971. Introduction to phase transitions and critical phenomena. Oxford University Press, Oxford.
56. Stoyan, D., and H. Stoyan. 1994. Fractals, random shapes and point fields: methods of geometrical statistics. Wiley, Chichester.
57. Tybirk, K., L. H. Schmidt, and T. Hauser. 1994. Notes on soil seed banks of African acacias. African Journal of Ecology 32:327-330.
58. van Langevelde, F., C. van de Vijver, L. Kumar, J. van de Koppel, N. de Ridder, J. van Andel, A. K. Skidmore, et al. 2003. Effects of fire and herbivory on the stability of savanna ecosystems. Ecology 84: 337-350.
59. van Wilgen, B. W., H. C. Biggs, S. P. O'Regan, and N. Mare. 2000. A fire history of the savanna ecosystems in the Kruger National Park, South Africa, between 1941 and 1996. South African Journal of Science 96:167-183.
60. Walker, B. H., and I. Noy-Meir. 1982. Aspects of the stability and resilience of savanna ecosystems. Pages 556-590 in B. J. Huntley, and B. H. Walker, eds. Ecology of tropical savannas. Springer, Berlin.
61. Walker, B. H., D. Ludwig, C. S. Holling, and R. M. Peterman. 1981. Stability of semi-arid savanna grazing systems. Journal of Ecology 69:473-498.
62. Wiegand, K., D. Saitz, and D. Ward. 2006. A patch-dynamics approach to savanna dynamics and woody plant encroachment: insights from an arid savanna. Perspectives in Plant Ecology, Evolution, and Systematics 7:229-242.
63. Wiegand, T., and K. Moloney. 2004. Rings, circles, and null-models for point pattern analysis in ecology. Oikos 104:209-229.
64. Witkowski, E. T. F., and R. D. Garner. 2000. Spatial distribution of soil seed banks of three African savanna woody species at two contrasting sites. Plant Ecology 149:91-106.