The stability of African savannas: Insights from the indirect estimation of the parameters of a dynamic model

Ecology

Volumn 91, Issue 6, 2010, Pages 1682-1692

  Higgins, Steven I ^a   Scheiter, Simon ^b   Sankaran, Mahesh ^c,d  

^a GOETHE UNIVERSITY   (Germany)

^b BIODIVERSITY AND CLIMATE RESEARCH CENTRE BIK F   (Germany)

^c UNIVERSITY OF LEEDS   (United Kingdom)

^d TATA INSTITUTE OF FUNDAMENTAL RESEARCH   (India)

Author keywords

African savanna; Biogeographical patterns; Disturbance gradient; Grass and tree coexistence; Indirect parameter estimation; Markov chain monte carlo method; Resource gradient; Tropical savanna

Indexed keywords

ABUNDANCE; BIOGEOGRAPHICAL REGION; COEXISTENCE; DATA SET; DISTURBANCE; INTERSPECIFIC COMPETITION; MARKOV CHAIN; MONTE CARLO ANALYSIS; PARAMETERIZATION; RAINFALL; RESOURCE AVAILABILITY; SAVANNA; TROPICAL ENVIRONMENT;

AFRICA; ARTICLE; BIOLOGICAL MODEL; ECOSYSTEM; PHYSIOLOGY; POACEAE; TIME; TREE;

AFRICA; ECOSYSTEM; MODELS, BIOLOGICAL; POACEAE; TIME FACTORS; TREES;

AFRICA;

POACEAE; XANTHORRHOEA;

EID: 77953273236     PISSN: 00129658     EISSN: None     Source Type: Journal    
DOI: 10.1890/08-1368.1     Document Type: Article

References (37)

1. Albert, J. 2007. Bayesian computation with R. Springer, Berlin, Germany.
2. Anderies, J. M., M. A. Janssen, and B. H. Walker. 2002. Grazing management, resilience, and the dynamics of a firedriven rangeland system. Ecosystems 5:23-44.
3. Freckleton, P., and A. R. Watkinson. 2000. On detecting and measuring competition in spatially structured plant communities. Ecology Letters 3:423-432.
4. Frost, P. G. H., J. C. Menaut, B. H. Walker, E. Medina, O. T. Solbrig, and M. Swift. 1986. Responses of savannas to stress and disturbance. Biology International, Special Issue 10:1-82.
5. Gardner, T. A. 2006. Tree-grass coexistence in the Brazilian cerrado: demographic consequences of environmental instability. Journal of Biogeography 33:448-463.
6. Geyer, C. 1992. Practical Markov chain Monte Carlo. Statistical Science 7:473-511.
7. Grace, J., J. M. P. San Jose, H. S. Miranda, and R. A. Montes. 2006. Productivity and carbon fluxes of tropical savannas. Journal of Biogeography 33:387-400.
8. Haario, M., M. Laine, A. Mira, and E. Saksman. 2006. DRAM: efficient adaptive MCMC. Statistics and Computing 16:339-354.
9. Higgins, S. I., et al. 2007a. Effects of four decades of fire manipulation on woody vegetation structure in savanna. Ecology 88:1119-1125.
10. Higgins, S. I., W. J. Bond, and W. S. W. Trollope. 2000. Fire, resprouting and variability: a recipe for grass-tree coexistence in savanna. Journal of Ecology 88:213-229.
11. Higgins, S. I., W. J. Bond, W. S. W. Trollope, and R. J. Williams. 2008. Physically motivated empirical models for the spread and intensity of grass fires. International Journal of Wildland Fire 17:595-601.
12. Higgins, S. I., J. Kantelhardt, S. Scheiter, and J. Boerner. 2007A. Sustainable management of extensively managed savanna rangelands. Ecological Economics 62:102-114.
13. Higgins, S. I., C. M. Shackleton, and E. R. Robinson. 1999. Changes in woody community structure and composition under contrasting landuse systems in a semi-arid savanna, South Africa. Journal of Biogeography 26:619-627.
14. House, J. I., S. Archer, D. D. Breshears, and R. J. Scholes. 2003. Conundrums in mixed woody-herbaceous plant systems. Journal of Biogeography 30:1763-1777.
15. Jeltsch, F., S. J. Milton, W. R. J. Dean, and N. van Royen. 1996. Tree spacing and coexistence in semiarid savannas. Journal of Ecology 84:583-595. (Pubitemid 27059213)
16. Koenker, R. 2008. quantreg: Quantile; Regression. R. package, Version 4.24. (www.R-project.org)
17. Law, B. E., M. G. Ryan, and P. M. Anthoni. 1999. Seasonal and annual respiration of a ponderosa pine ecosystem. Global Change Biology 5:169-182. (Pubitemid 29311864)
18. Liedloff, A. C., and G. D. Cook. 2007. Modelling the effects of rainfall variability and fire on tree populations in an Australian tropical savanna with the FLAMES simulation model. Ecological Modelling 201:269-282.
19. Ludwig, F., T. E. Dawson, H. Kroon, F. Berendse, and H. H. T. Prins. 2003. Hydraulic lift in Acacia tortilis trees on an East African savanna. Oecologia 134:293-300.
20. McCarthy, M. A. 2007. Bayesian methods for ecology. Cambridge University Press, Cambridge, UK.
21. Mordelet, P., J. C. Menaut, and A. Mariotti. 1997. Tree and grass rooting patterns in an African humid savanna. Journal of Vegetation. Science 8:65-70. (Pubitemid 27185719)
22. Nelson, W. A., E. McCauley, and J. Wimbert. 2004. Capturing dynamics with the correct rates: inverse problems using semiparametric approaches. Ecology 85:889-903.
23. O'Connor, T. G. 1985. A synthesis of field experiments concerning the grass layer in the savanna regions of southern Africa. South African National Scientific Programmes Report Number 114, Pretoria, South Africa.
24. Poorter, H., C. Remkes, and H. Lambers. 1990. Carbon and nitrogen economy of 24 wild species differing in relative growth rate. Plant Physiology 94:621-627. (Pubitemid 120015598)
25. R Development Core Team. 2007. R: a language and environment for statistical computing. R Foundation for Statistical Computing, Vienna, Austria. (www.R-project.org)
26. Sankaran, M., et al. 2005. Determinants of woody cover in African savannas. Nature 438:846-849. (Pubitemid 41753065)
27. Sankaran, M., J. Ratnam, and N. 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. (Pubitemid 38693390)
28. Scheiter, S., and S. I. Higgins. 2007. Partitioning of root and shoot competition and the stability of savannas. American Naturalist 170:587-601. (Pubitemid 47580423)
29. Scheiter, S., and S. I. Higgins. 2009. Impacts of climate change on the vegetation of Africa: an adaptive dynamic vegetation modelling approach. Global Change Biology 15:2224-2246.
30. Scholes, R. J., and S. R. Archer. 1997. Tree-grass interactions in savannas. Annual. Review of Ecology and Systematics 28: 517-544.
31. Scholes, R. J., and B. H. Walker. 1993. An African savanna: synthesis of the Nylsvley study. Cambridge University Press, Cambridge, UK.
32. Shipley, B. 2006. Net assimilation rate, specific leaf area and leaf mass ratio: Which is most closely correlated with relative growth rate? A meta-analysis. Functional Ecology 20:565-574. (Pubitemid 44035836)
33. van Langevelde, F., C. A. D. M. van de Vijver, L. Kumar, J. van de Koppel, N. de Ridder, J. van Andel, A. K. Skidmore, J. W. Hearne, L. Stroosnijder, W. J. Bond, H. H. T. Prins, and M. Rietkerk. 2003. Effects of fire and herbivory on the stability of savanna ecosystems. Ecology 84:337-350. (Pubitemid 36893071)
34. Walker, B. H., and I. Noy-Meier. 1982. Aspects of the stability and resilience of savanna ecosystems. Pages 556-590 in B. J. Huntley and B. H. Walker, editors. Ecology of tropical savannas. Springer-Verlag, Berlin, Germany.
35. Walter, H. 1971. Ecology of tropical and subtropical vegetation. Oliver and Boyd, Edinburgh, Scotland.
36. Whittaker, R. H. 1975. Communities and ecosystems. Second edition. Macmillan, New York, New York, USA.
37. Wiegand, T., F. Jeltsch, I. Hanski, and V. Grimm. 2003. Using pattern-oriented modeling for revealing hidden information: a key for reconciling ecological theory and application. Oikos 100:209-222. (Pubitemid 36610466)