Interspecific variation in the reproductive response of Acacia species to protection from large mammalian herbivores

Biotropica

Volumn 39, Issue 4, 2007, Pages 559-561

  Young, Truman P ^a,b   Augustine, David J ^b,c  

^a UNIVERSITY OF CALIFORNIA   (United States)

^b MPALA RESEARCH CENTRE   (Kenya)

^c USDA FOREST SERVICE   (United States)

Author keywords

East Africa; Fruit set; Laikipia; Pods; Prickles; Recurved spines; Thorns

Indexed keywords

ANTIPREDATOR DEFENSE; FITNESS; HERBIVORY; INTERSPECIFIC VARIATION; MORPHOLOGY; REPRODUCTIVE COST; SEED SET;

ACACIA; ACACIA BREVISPICA; ACACIA ETBAICA; ACACIA MELLIFERA; ACACIA NILOTICA; MAMMALIA;

EID: 34547120190     PISSN: 00063606     EISSN: 17447429     Source Type: Journal    
DOI: 10.1111/j.1744-7429.2007.00281.x     Document Type: Article

References (31)

1. Ahn, P. M., and L. C. Geiger. 1987. Soils of Laikipia District. Kenya Soil Survey, National Agricultural Laboratories, Kabete, Kenya.
2. Augustine, D. J., and S. J. McNaughton. 2004. Regulation of shrub dynamics by native browsing ungulates on East African rangeland. J. Appl. Ecol. 41 : 45 58.
3. Birkett, A. 2002. The impact of giraffe, rhino and elephant on the habitat of a black rhino sanctuary in Kenya. Afr. J. Ecol. 40 : 276 282.
4. Birkett, A. B. Stevens-Wood. 2005. Effect of low rainfall and browsing by large herbivores on an enclosed savannah habitat in Kenya. Afr. J. Ecol. 43 : 123 130.
5. Bond, W. J. D. Loffell. 2001. Introduction of giraffe changes acacia distribution in a South African savanna. Afr. J. Ecol. 39 : 286 294.
6. Cooper, S. M., and T. F. Ginnett. 1997. Spines protect plants against browsing by small climbing mammals. Oecologia 113 : 219 221.
7. Cooper, S. M. N. Owen-Smith. 1986. Effects of plant spinescence on large mammalian herbivores. Oecologia 68 : 446 455.
8. Dominguez, C. A. R. Dirzo. 1994. Effects of defoliation on Erythroxylum havanense, a tropical proleptic species. Ecology 75 : 1896 1902.
9. Fernandez-Calvo, I. C., and J. R. Obeso. 2004. Growth, nutrient content, fruit production and herbivory in bilberry Vaccinium myrtillus L. along an altitudinal gradient. Forestry 77 : 213 223.
10. Gadd, M. E., T. P. Young, and T. M. Palmer. 2001. Effects of simulated shoot and leaf herbivory in Acacia drepanolobium. Oikos 92 : 515 520.
11. Goheen, J. R., T. P. Young, F. Keesing, and T. M. Palmer. 2007. Consequences of herbivory by native ungulates for reproduction of a savanna tree. J. Ecol. 95 : 129 135.
12. Gowda, J. H. 1996. Spines of Acacia tortilis: What do they defend and how? Oikos 77 : 279 284.
13. Gowda, J. H. 1997. Physical and chemical response of juvenile Acacia tortilis trees to browsing. Experimental evidence. Funct. Ecol. 11 : 106 111.
14. Gowda, J. H., B. R. Albrectsen, J. P. Ball, M. Sjöberg, and R. T. Palo. 2003. Spines as a mechanical defence: The effects of fertiliser treatment on juvenile Acacia tortilis plants. Acta Oecologica 4 : 1 4.
15. Huntzinger, P. M., R. Karban, T. P. Young, and T. M. Palmer. 2004. Relaxation of induced indirect defenses of acacias following removal of mammalian herbivores. Ecology 85 : 609 614.
16. Karban, R., and I. T. Baldwin. 1997. Induced responses to herbivory. University of Chicago Press, Chicago, Illinois.
17. Karban, R., and J. Myers. 1989. Induced plant responses to herbivory. Ann. Rev. Ecol. Syst. 20 : 331 348.
18. MacGregor, S. D., and T. G. O'Connor. 2004. Response of Acacia tortilis to utilization by elephants in a semi-arid African savanna. S. Afr. J. Wildl. Res. 34 : 55 66.
19. Marquis, R. J. 1992. The selective impact of herbivores. In R. S. Fritz and E. L. Simms (Eds.). Plant resistance to herbivores and pathogens: Ecology, evolution, and genetics, pp. 301 325. University of Chicago Press, Chicago, Illinois.
20. Milewski, A. V., T. P. Young, and D. Madden. 1991. Thorns as induced defenses: Experimental evidence. Oecologia 86 : 70 75.
21. Myers, J. H. D. Bazely. 1991. Thorns, spines, prickles, and hairs: Are they stimulated by herbivory and do they deter herbivores? In D. W. Tallamy and M. J. Raupp (Eds.). Phytochemical induction by herbivores, pp. 325 344. John Wiley & Sons, Inc., New York, New York.
22. Oba, G. 1998. Effects of excluding goat herbivory on Acacia tortilis woodland around pastoralist settlements in northwest Kenya. Acta Oecologica 19 : 395 404.
23. Obeso, J. R. 1993. Does defoliation affect reproductive output of herbaceous perrenials and woody plants in different ways? Funct. Ecol. 7 : 150 155.
24. Parra-Tabla, V., V. Rico-Gray, and M. Carbajal. 2004. Effect of defoliation on leaf growth, sexual expression and reproductive success of Cnidoscolus aconitifolius (Euphorbiaceae). Plant Ecology 173 : 153 160.
25. Pellew, R. A. P. 1983. The impact of elephant, giraffe and fire upon the Acacia tortilis woodlands of the Serengeti. Afr. J. Ecol. 21 : 41 78.
26. Rooke, T., K. Danell, R. Bergstrom, C. Skarpe, and J. Hjalten. 2004. Defensive traits of savanna trees - The role of shoot exposure to browsers. Oikos 107 : 161 171.
27. Ward, D., and T. P. Young. 2002. Effects of large mammalian herbivores and ant symbionts on condensed tannins of Acacia drepanolobium in Kenya. J. Chem. Ecol. 28 : 913 929.
28. Young, T. P. 1987. Increased thorn length in Acacia drepanolobium - An induced response to browsing. Oecologia 71 : 436 438.
29. Young, T. P., and B. N. Okello. 1998. Relaxation of an induced defense after exclusion of herbivores: Spine length in Acacia drepanolobium. Oecologia 115 : 508 513.
30. Young, T. P., B. Okello, D. Kinyua, and T. M. Palmer. 1998. KLEE: A long-term, large scale herbivore exclusion experiment in Laikipia, Kenya. Afr. J. Range & Forage Sci. 14 : 94 102.
31. Young, T. P., M. L. Stanton, and C. Christian. 2003. Effects of natural and simulated herbivory on spine lengths of Acacia drepanolobium in Kenya. Oikos 101 : 171 179.