Resource apportionment and net primary production across the Orinoco savanna-woodland continuum, Venezuela

Acta Oecologica

Volumn 32, Issue 2, 2007, Pages 243-253

  San José, José J ^a   Montes, Rubén A ^b  

^a INSTITUTO VENEZOLANO DE INVESTIGACIONES CIENTÍFICAS   (Venezuela)

^b UNIVERSIDAD SIMÓN BOLÍVAR   (Venezuela)

Author keywords

Disturbance; Net primary productivity; Orinoco savannas; Persistence; Resource apportionment; Woody and herbaceous coexistence

Indexed keywords

CLIMATE VARIATION; DISTURBANCE; HERB; NET PRIMARY PRODUCTION; RECRUITMENT; RESOURCE AVAILABILITY; SAVANNA; WOODLAND;

SOUTH AMERICA; VENEZUELA;

EID: 34548574534     PISSN: 1146609X     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.actao.2007.05.005     Document Type: Article

References (64)

1. Archer S. Herbivore mediation of grass-woody plant interactions. Trop. Grasslands 29 (1995) 218-235
2. Bell R.H. The effect of soil nutrient availability on community structure in African ecosystems. In: Huntley B.J., and Walker B.H. (Eds). Ecology of Tropical Savannas (1982), Springer, Berlin 193-216
3. Belsky A.J. Population and community processes in a mosaic grassland in the Serengeti, Tanzania. J. Ecol. 74 (1986) 841-856
4. Belsky A.J. Revegetation of artificial disturbance in grasslands in the Serengeti National Park, Tanzania. II. Five years of successional changes. J. Ecol. 75 (1986) 937-951
5. Belsky A.J., Amundson R.G., Duxberry R.M., Riha S.J., Ali A.R., and Mwonga S.M. The effects of trees on their physical, chemical and biological environments in a semi-arid savanna in Kenya. J. Appl. Ecol. 26 (1989) 1004-1024
6. Bohm W. Methods of Studying Root Systems. Ecological Studies Vol. 33 (1979), Springer, Berlin 188 pp.
7. Bremmer J.M. Total nitrogen. In: Black C.A. (Ed). Methods of Soil Analysis (1965), American Society of Agronomy, Madison, WI 1149-1178
8. Brown C.E. Applied Multivariate Statistics in Geohydrology and Related Sciences (1998), Springer, Berlin 248 pp.
9. Callaway R.M. Positive interactions among plants. Bot. Rev. 61 (1995) 306-349
10. Christian, C.S., Stewart, G.A., 1952. General report on a survey of the Katherine-Darwin region 1946. CSIRO Land. Res. Ser. No. 1. Australia.
11. Christie E.K. A note on the significance of Eucalyptus populnea for buffel grass production in infertile semi-arid rangelands. Trop. Grasslands 9 (1975) 243-246
12. Cochrane, T.T., Sanchez, L., Azevedo, L.G., Porras, J.A., Garver, C.L., 1985. Land in Tropical America. A guide to climatic, landscapes and soils for agronomists in Amazonian, the Andean Piedmont, Central Brazil and Orinoco. EMBRAPA-CIAT, Cali, Colombia, 144 pp.
13. Cox G.M. Laboratory Manual of General Ecology. second ed. (1972), Brown, Iowa
14. Davis R.G. Computer Programming in Quantitative Biology (1971), Academic Press, New York 267 pp.
15. Davis M.A., Wrage K.J., and Reich P.B. Competition between tree seedlings and herbaceous vegetation: support for a theory of resource supply and demand. J Ecol. 86 (1998) 652-661
16. Day P.R. Particles fractionation and particle size analysis. In: Black C.A. (Ed). Methods of Soil Analysis (1965), American Society of Agronomy, Madison, WI 1035-1048
17. Eiten, G., 1990. Vegetacão, in: Pinto, M.N. (Ed.), Cerrado. Caracterizacão, ocupacão e perspectives. Universidade de Brasilia, Brasil, pp. 9-66.
18. Fensham R.J., and Kirkpatrick J.B. Soil characteristics and tree species distribution in the savannah of Melville Island, Northern Territory. Aust. J. Bot. 40 (1992) 311-333
19. Fernandez-Illescas C.P., and Rodriguez-Iturbe I. Hydrologically driven hierarchical competition-colonization models: the impact of interannual climate fluctuations. Ecol. Monogr. 73 (2003) 207-222
20. Goodland R., and Pollard R. The Brazilian cerrado vegetation: A fertility gradients. J. Ecol.67 (1973) 219-224
21. Hall D.O., Scurlock J.M.O., Bolhar-Nordenkampf H.R., Leegood R.C., and Long S.P. Photosynthesis and Production in a Changing Environment (1993), Chapman & Hall, London 464 pp
22. Hedberg H., and Pyre A. Stratigraphy of northern Anzoategui, Venezuela. Am. Assoc. Petrol. Geol. Bull. 28 (1944) 1-28
23. Hedges J.J., Clark W.A., Quay P.D., Richey J.E., Deviol A.H., and Urbents S.M. Composition and fluxes of particulates organic material in the Amazon river. Limnol Oceanogr. 31 (1986) 727-730
24. Henderson S.P., Hattersley S., Caemmer V., and Osmond B. Are C4 pathway plant threatened by global climatic change?. In: Schulze E.D., and Caldwell M.M. (Eds). Ecophysiology of Photosynthesis (1993), Springer, Berlin 118-128
25. Higgins S.I., Bond W.J., and Trollope W.S.W. Fire, resprouting and variability: a recipe for grass-tree coexistence in savanna. J. Ecol. 88 (2000) 213-229
26. House J.I., Archer S., Breshears D.D., Scholes R., Coughenour M.B., Dodd M.B., Gignoux J., Hall D.O., Hanan N.P., Joffre R., Le Roux X., Ludwig J.A., Menaut J.C., Montes R., Parton W.J., San José J.J., Scalan J.C., Scurlock J.M., Simioni G., and Thorrold B. Conundrums in mixed woody-herbaceous plants systems. J. Biogeogr. 30 (2003) 1763-1777
27. Jackson M.L. Soil Chemical Analysis (1958), Prentice-Hall, New York 498 pp
28. Jeltsch F., Weber G.E., and Grimm V. Ecological buffering mechanisms in savannas: A unifying theory of long-term tree-grass coexistence. Plant Ecol. 150 (2000) 161-171
29. Kellman M. Soil enrichment by neotropical savanna trees. J. Ecol. 67 (1979) 565-577
30. Long S.P., Jones M.B., and Roberts M.J. Primary Productivity of Grass Ecosystems of the Tropics and Subtropics (1992), Chapman & Hall, London 267 pp
31. McKell C.M., Wilson A.M., and Jones M.B. A flotation methods for easy separation of roots from soil samples. J. Agron. 53 (1961) 56-57
32. McPherson G.R. Ecology and Management of North American Savannas (1997), University of Arizona Press, Tucson
33. Montes R.A., and San José J.J. Ion movement in the well drained neotropical savannas. Curr. Top Bot. Res. 1 (1993) 391-418
34. Montgomery D.C., and Peck E.A. Introduction to Linear Regression Analysis (1982), Wiley & Sons, New York
35. Newbould P.J. Methods for Estimating the Primary Production of Forest. IBP. Handbook No. 2 (1970), Blackwell Scientific Publication, Oxford 62 pp
36. Olsen S.R., and Dean L.A. Phosphorus. In: Black C.A. (Ed). Methods of Soil Analysis (1965), American Society of Agronomy, Wisconsin 1035-1049
37. Pla Sentis, I., 1977. Metodología para caracterización física con fines de diagnostico de problemas de manejo y conservación de suelo en condiciones tropicales. Curso de Post-grado en Ciencias del Suelo. Facultad de Agronomía. Universidad Central de Venezuela, Maracay, Venezuela, 111 pp.
38. Ranzani, G., 1971. Solos do cerrado no Brasil, in: Blucher, E. (Ed.), Simposio sobre cerrado. Universidade de Sao Paulo, Brasil, pp. 26-43.
39. Reich P.B., Peterson D.A., Wrager K., and Wedin D. Fire and vegetation effects on productivity and nitrogen cycling across a forest-grassland continuum. Ecology 82 (2001) 1703-1719
40. Richards L.A. Methods of measuring soil moisture tension. Soil. Sci. 68 (1949) 95-112
41. San José J.J., and Fariñas M.R. Changes in tree density and species composition in a protected Trachypogon savannas, Venezuela. Ecology 64 (1983) 447-453
42. San José J.J., and Fariñas M.R. Temporal changes in the structure of a Trachypogon savanna protected for 25 years. Acta Oecol. 12 (1991) 237-247
43. San José J.J., and Montes R.A. An assessment of regional productivity: the Trachypogon savannas at the Orinoco llanos. Nature Resour. 25 (1989) 5-18
44. San José J.J., and Montes R.A. Regional interpretation of environmental which influence Trachypogon savannas in the Orinoco Llanos. Vegetatio 95 (1991) 21-32
45. San José J.J., and Montes R.A. Changes in bulk precipitation reactivity throughout the vegetation/soil continuum in a Trachypogon savanna (Venezuela). Commun Soil. Sci. Plant Anal. 23 (1992) 1753-1766
46. San José J.J., and Montes R.A. Fire effect on the coexistence of trees and grasses in savannas and the resulting outcome on organic matter budget. Interciencia 22 (1997) 289-298
47. San José J.J., and Montes R.A. Management effects on carbon stocks and fluxes across the Orinoco savannas. Forest Ecol. Manage. 150 (2001) 293-311
48. San José J.J., Berrade F., and Ramírez F. Seasonal changes of growth, mortality and disappearance of below-ground root biomass in the Trachypogon savanna. Oecolog. Plantar. 3 (1982) 347-358
49. San José J.J., Montes R.A., Garcia-Miragaya J., and Orihuela B. Bio-production of Trachypogon savannas in a latitudinal cross-section of the Orinoco llanos, Venezuela. Acta Oecol. 6 (1985) 25-43
50. San José J.J., Montes R.A., and Mazorra M. The nature of savanna heterogeneity in the Orinoco basin. Global Ecol. Biogeogr. Lett. 7 (1998) 441-455
51. San José J.J., Montes R.A., and Rocha C. Neotropical savanna converted to food cropping and cattle feeding systems: soil carbon and nitrogen changes over 30 years. Forest Ecol. Manage. 184 (2003) 17-32
52. Sankaran M., Ratnam J., and Hanan N.P. Tree-grass coexistence in savannas revisited-insights from an examination of assumptions and mechanisms-invoked in existing models. Ecol. Lett. 7 (2004) 480-490
53. Sankaran M., Hanan N.P., Scholes R.J., Ratnam J., Augustine D.J., Cade B.S., Gignoux J., Higgins S.I., LeRoux X., Ludwig F., Ardo J., Banyikwa F., Brown A., Bucini G., Caylor K.K., Coughenour M.B., Diouf A., Ekaya W., Feral C.J., February E.C., Frost P.G., Hiernaux P., Hrabar H., Metzger K.L., Prins H.H., Ringrose S., Sea W., Tews J., Worden J., and Zambatis N. Determinants of woody cover in African savannas. Nature 438 (2005) 846-849
54. Scanlan J.C., and Burrows W.H. Woody overstory impact on herbaceous understory in Eucalyptus spp. communities in central Queensland. Aust. J. Ecol. 15 (1990) 191-197
55. Scholes R.J., and Hall D. The carbon budget of tropical savannas, woodlands and grasslands. In: Breymeyer A.I., Hall D., Melillo J.M., and Agren G.I. (Eds). Global Change: Effects on Coniferous Forest and Grasslands (1996), John Wiley & Sons, New York 69-100 SCOPE
56. Snedecor G.W., and Cochran W.C. Statistical Methods. sixth ed (1967), Iowa State University Press, Iowa 593 pp
57. Sokal R., and Rohlf R. Biometry. second ed. (1998), Freeman, New York 776 pp
58. Stallard, R.F., Koehnken, L., Johnsson, M.J., 1990. Weathering processes and the composition of inorganic material transported through the Orinoco River system, Venezuela and Colombia, in: Weibezahn, F., Alvarez, H, Lewis, W. Jr. (Eds.), The Orinoco River as an Ecosystem. 39 Convención Anual de la Asociación Venezolana para el Avance de la Ciencia, 16-21 Noviembre 1986, Valencia, Venezuela, pp. 81-119.
59. Technicon Auto-Analyzer, 1978. Individual/simultaneous determination of nitrogen and/or phosphorus in acid digest. Industrial Methods Vo. 329-374 W/B, pp. 1-9. Technicon Industrial Systems, Taurytown, NY.
60. Tiedemann A.R., and Klemmedson J.O. Effect of mesquite trees on vegetation and soils in the desert grasslands. J. Range Manage. 30 (1977) 361-367
61. Walker B.H., and Langridge J.L. Predicting savanna vegetation structure on the basis of plant available moisture (PAM) and plant available nutrients (PAN): a case study from Australia. J. Biogeogr. 24 (1997) 813-825
62. Warner P.R., and Chesson P.L. Coexistence mediated by recruitment fluctuations: a field guide to storage effect. Am. Nat. 125 (1985) 769-787
63. Williams R.J., Duff G.A., Bowman D.M., and Cook G.D. Variation in the composition and structure of tropical savannas as a function of rainfall and soil texture along a large-scale climatic gradient in the Northern Territory, Australia. J. Biogeogr. 23 (1996) 747-756
64. Willmott C.J. Some comments on the evaluation of model performance. Bull. Am. Meteorol. Soc. 63 (1982) 1309-1313