The distribution of tree and grass roots in savannas in relation to soil nitrogen and water

South African Journal of Botany

Volumn 76, Issue 3, 2010, Pages 517-523

  February, E C ^a   Higgins, S I ^b  

^a UNIVERSITY OF CAPE TOWN   (South Africa)

^b GOETHE UNIVERSITY   (Germany)

Author keywords

13C; 15N; Nitrogen; Root biomass; Savanna; Trees and grasses; Water

Indexed keywords

CARBON ISOTOPE; CLAY SOIL; FINE ROOT; GRASS; NITROGEN ISOTOPE; RELATIVE ABUNDANCE; SANDY LOAM; SAVANNA; SOIL CARBON; SOIL DEPTH; SOIL MOISTURE; SOIL NITROGEN; SOIL WATER; TREE;

KRUGER NATIONAL PARK; SOUTH AFRICA;

POACEAE;

EID: 77958546102     PISSN: 02546299     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.sajb.2010.04.001     Document Type: Article

References (46)

1. Barton J.M., Bristow J.W., Venter F.J. A summary of the Precambrian granitoid rocks of the Kruger National Park. Koedo 1986, 29:39-44.
2. Caylor K.K., D'Odorico P., Rodriguez-Iturbe I. On the ecohydrology of structurally heterogeneous semiarid landscapes. Water Resource Research 2006, 42. W07424, R004683.
3. Cerling T.E., Harris J.M., MacFadden B.J., Leakey M.G., Quade J., Eisenmann V., Ehleringer J.R. Global vegetation change through the Miocene-Pliocene boundary. Nature 1997, 389:153-158.
4. Coates Palgrave M., Coates Palgrave K. Trees of Southern Africa 2002, Struik Publishers (Pty) Ltd., Cape Town. 3rd ed.
5. Coetsee C., February E.C., Bond W.J. Nitrogen availability is not affected by frequent fire in a South African savanna. Journal of Tropical Ecology 2008, 24:1-8.
6. Collins D.B.G., Bras R.L. Plant rooting strategies in water-limited ecosystems. Water Resource Research 2007, 43. W06407, R005541.
7. Craine J.M., Morrow C., Stock W.D. Nutrient concentration ratios and co-limitation in South African grasslands. New Phytologist 2008, 179:829-836.
8. 2 fixation in some species of African Acacia. Journal of Ecology 2007, 95:1123-1133.
9. Dawson T.E., Mambelli S., Plamboeck A.H., Templer P.H., Tu K.P. Stable isotopes in plant ecology. Annual Review of Ecology and Systematics 2002, 33:507-559.
10. De Kroon H., Visser E.J. Root Ecology 2003, Springer, Berlin, Heidelberg, New York.
11. Dickie I.A., Schnitzer S.A., Reich P.B., Hobbie S.E. Is oak establishment in old-fields and savanna openings context dependent?. Journal of Ecology 2007, 95:309-320.
12. Evans R.D., Ehleringer J.R. Water and nitrogen dynamics in an arid woodland. Oecologia 1994, 99:233-242.
13. Frost P., Menaut J.C., Walker B., Medina E., Solbrigo T. Responses of savannas to stress and disturbance. International Union of Biological Sciences Special Issue 10, Paris, France 1986.
14. Gardner T.A. Tree-grass coexistence in the Brazilian cerrado: demographic consequences of environmental instability. Journal of Biogeography 2006, 33:448-463.
15. Gibbs-Russell G.E., Watson L., Koekemoer M., Smook L., Barker N.P., Anderson H.M., Dallwitz M.J. Grasses of Southern Africa. Memoirs of the Botanical Survey of South Africa No. 58 1990.
16. Hempson G.P., February E.C., Verboom G.A. Determinants of savanna vegetation structure: insights from Colophospermum mopane. Austral Ecology 2007, 32:429-435.
17. Higgins S.I., Bond W.J., Trollope W.S. Fire resprouting and variability: a recipe for grass-tree coexistence in savanna. Journal of Ecology 2000, 88:213-229.
18. Jeltsch F., Weber G.E., Grimm V. Ecological buffering mechanisms in savannas: a unifying theory of long-term tree-grass coexistence. Plant Ecology 2000, 161:161-171.
19. Laio F., D'Odorico P., Ridolfi L. An analytical model to relate the vertical root distribution to climate and soil properties. Geophysical Research Letters 2006, 33:L18401.
20. Le Roux X., Bariac T., Mariotti A. Spatial partitioning of the soil water resource between grass and shrub components in a West African humid savanna. Oecologia 1995, 104:147-155.
21. Ludwig F., Dawson T.E., De Kroon H., Berendse F., Prins H.H.T. Hydraulic lift in Acacia tortilis trees on an East African savanna. Oecologia 2003, 134:293-300.
22. McLaren J.R., Wilson S.D., Peltzer D.A. Plant feedbacks increase the temporal heterogeneity of soil moisture. Oikos 2004, 107:199-205.
23. Menaut J., Gignoux J., Prado C., Clobert J. Tree community dynamics in a humid savanna of the Cote-d'Ivoire: modelling the effects of fire and competition with grass and neighbours. Journal of Biogeography 1990, 17:471-481.
24. Mordelet P., Menaut J., Mariotti A. Tree grass rooting patterns in an African humid savanna. Journal of Vegetation Science 1997, 8:65-70.
25. Mueller L.D., Altenberg L. Statistical inference on measures of niche overlap. Ecology 1985, 66:1204-1210.
26. Okin G.S., Mladenov N., Wang L., Cassel D., Caylor K.K., Ringrose S., Macko S.A. Spatial patterns of soil nutrients in two southern African savannas. Journal of Geophysical Research Letters 2008, 113:G02011.
27. Pärtel M., Wilson S.D. Root dynamics and spatial pattern in prairie and forest. Ecology 2002, 83:1199-1203.
28. Pinheiro, J., Bates, D., DebRoy, S., Sarkar, D., the R Core team, 2008. nlme: Linear and nonlinear mixed effects models. R package version 3.1-88. URL http://www.R-project.org.
29. R Development Core Team R: A Language and Environment for Statistical Computing 2008, R Foundation for Statistical Computing, Vienna, Austria, http://www.R-project.org.
30. Sankaran M., Ratnam J., Hanan N. Tree-grass coexistence in savannas revisited - insights from an examination of assumptions and mechanisms invoked in existing models. Ecology Letters 2004, 7:480-490.
31. Sankaran M., Hanan N.P., Scholes R.J., Ratnam J., Augustine D.J., Cade B.S., Gignoux J., Higgins S.I., Le Roux X., Ludwig F., Ardo J., Banyikwa F., Bronn A., Bucini G., Caylor K.K., Coughenour M.B., Diouf A., Ekaya W., Feral C.J., February E.C., Frost P.G.H., Hiernaux P., Hrabar H., Metzger K.L., Prins H.H.T., Ringrose S., Sea W., Tews J., Worden J., Zambatis N. Determinants of woody cover in African savannas. Nature 2005, 438:846-849.
32. Scheiter S., Higgins S.I. Partitioning of root and shoot competition and the stability of savannas. American Naturalist 2007, 170:587-601.
33. Schenk H.J. The shallowest possible water extraction profile: a null model for global root distributions. Vadose Zone Journal 2008, 7:1119-1124.
34. Scholes M.C., Scholes R.J., Otter L.B., Woghiren A.J. Biogeochemistry: the cycling of elements. The Kruger Experience 2003, 130-148. Island Press, Washington, U.S.A. J.T. Du Toit, K.H. Rogers, H.C. Biggs (Eds.).
35. Scholes R.J., Archer S.R. Tree-grass interactions in savannas. Annual Review of Ecology and Systematics 1997, 28:517-544.
36. Scholes R.J., Walker B.H. An African Savanna. Synthesis of the Nylsvley Study 1993, Cambridge University Press, United Kingdom.
37. Seghieri J., Floret C., Pontanier R. Plant phenology in relation to water availability: herbaceous and woody species in the savannas of northern Cameroon. Journal of Tropical Ecology 1995, 11:237-254.
38. Sternberg L.S.L., Bucci S., Franco A., Goldstein G., Hoffman W.A., Meinzer F.C., Moreira M.Z., Scholz F. Long range lateral root activity by neo-tropical savanna trees. Plant and Soil 2004, 270:169-178.
39. Van Langevelde F., Van der Vijver C.A.D.M., Kumar L., Van Koppel J., De Ridder N., Van Andel J., Skidmore A.K., Hearne J.W., Stroosnijder L., Bond W., Prins H.H., Rietkerk M.M. Effects of fire and herbivory on the stability of savanna ecosystems. Ecology 2003, 84:337-350.
40. Venter F.J., Scholes R.J., Eckhardt H.C. The abiotic template and its associated vegetation pattern. The Kruger Experience 2003, 83-129. Island Press, Washington, U.S.A. J.T. Du Toit, K.H. Rogers, H.C. Biggs (Eds.).
41. Vogel J.C., Fuls A., Ellis R.P. The geographical distribution of krantz grasses in South Africa. South African Journal of Science 1978, 74:209-215.
42. Walker B.H., Noy-Meir I. Aspects of the stability and resilience of savanna ecosystems. Ecology of Tropical Savannas 1982, 556-590. Springer-Verlag, Berlin. B.J. Huntley, B.H. Walker (Eds.).
43. Walter H. Vegetationszonen und Klima 1970, 76-79. Gustav Fischer, Verlag, Jena.
44. Walter H. Ecology of Tropical and Subtropical Vegetation 1971, Oliver and Boyd, Edinburgh, UK.
45. West J.B., Espeleta J.E., Donovan L.A. Fine root production and turnover across a complex edaphic gradient of a Pinus palustris-Aristida stricta savanna ecosystem. Forest Ecology and Management 2004, 189:397-406.
46. Zhou Z.C., Shangguan Z.P. Vertical distribution of fine roots in relation to soil factors in Pinus tabulaeformis Carr. forest of the Loess Plateau of China. Plant and Soil 2007, 291:119-129.