How do small browsers respond to resource changes? Dietary response of the Cape grysbok to clearing alien Acacias

Functional Ecology

Volumn 24, Issue 3, 2010, Pages 670-675

  Kerley, Graham I H ^a   Landman, Marietjie ^a   de Beer, Stephanie ^a  

^a NELSON MANDELA METROPOLITAN UNIVERSITY   (South Africa)

Author keywords

Body size constraints hypothesis; Diet shift; Grysbok; Optimality theory; Resource change

Indexed keywords

BODY SIZE; BROWSING; CAPE FLORISTIC REGION; DIETARY SHIFT; FOOD AVAILABILITY; HYPOTHESIS TESTING; RUMINANT;

SOUTH AFRICA;

ACACIA; ANIMALIA; BOVIDAE; RAPHICERUS MELANOTIS;

EID: 77955135189     PISSN: 02698463     EISSN: 13652435     Source Type: Journal    
DOI: 10.1111/j.1365-2435.2009.01675.x     Document Type: Article

References (37)

1. Official Methods of Analysis 1990, 15th Edn, Association of Official Analytical Chemists, Washington DC, USA
2. Brown DT, Doucet GJ. Temporal changes in winter diet selection by white-tailed deer in a northern deer yard. Journal of Wildlife Management 1991, 55:361-376.
3. Clarke KR. Non-parametric multi-variate analyses of changes in community structure. Australian Journal of Ecology 1993, 18:117-143.
4. Clarke KR, Gorley RN. Primer V6: User Manual/Tutorial 2006, PRIMER-E, Plymouth
5. Colwell RK. EstimateS: Statistical Estimation of Species Richness and Shared Species From Samples 2005, Ver. 7.5, Storrs, University of Connecticut, Connecticut, USA
6. Demment MW, van Soest PJ. A nutritional explanation for body-size pattern of ruminant and non-ruminant herbivores. American Naturalist 1985, 125:641-672.
7. Dierenfeld ES, Mueller PJ, Hall MB. Duikers: native food composition, micronutrient assessment, and speculative implications for improving captive diets. Zoo Biology 2002, 21:185-196.
8. Foggo A, Attrill MJ, Frost MT, Rowden AA. Estimating marine species richness: an evaluation of six extrapolative techniques. Marine Ecological Progress Series 2003, 248:15-26.
9. Gagnon M, Chew AE. Dietary preferences in extant African Bovidae. Journal of Mammalogy 2000, 81:490-511.
10. Hobbs NT, Bowden DC. Confidence intervals on food preference indices. Journal of Wildlife Management 1982, 46:505-507.
11. Hofmann RR. Evolutionary steps of ecophysiological adaptation and diversification of ruminants: a comparative view of their digestive system. Oecologia 1989, 78:443-457.
12. Holechek JL, Vavra M, Pieper RD. Botanical composition determination of range herbivore diets: a review. Journal of Range Management 1982, 35:309-315.
13. Kerley GIH, Pressey RL, Cowling RM, Boshoff AF, Sims-Castley R. Options for the conservation of large and medium-sized mammals in the Cape Floristic Region hotspot, South Africa. Biological Conservation 2003, 112:169-190.
14. Kigozi F, Kerley GIH, Lessing JS. The diet of Cape Grysbok, Raphericus melanotis, in Algoa Dune Strandveld, Port Elizabeth, South Africa. South African Journal of Wildlife Research 2008, 38:79-81.
15. LaGory MK, LaGory KE, Taylor DH. Winter browse availability and use by white-tailed deer in southeastern Indiana. Journal of Wildlife Management 1985, 49:120-124.
16. Landman M, Kerley GIH, Schoeman DS. Relevance of elephant herbivory as a threat to Important Plants in the Addo Elephant National Park, South Africa. Journal of Zoology, London 2008, 274:51-58.
17. MacArthur RH, Pianka ER. An optimal use of a patchy environment. American Naturalist 1966, 100:603-609.
18. Manson J. Aspects of the Biology and Behaviour of the Cape Grysbok, Raphicerus Melanotis Thunberg [in Afrikaans] 1974, M.Sc. thesis, University of Stellenbosch, South Africa
19. McAllister HJ, Bornman CH. Grazing preferences of impala: a quantitative faecal analytical and anatomical evaluation. Transactions of the Royal Society of South Africa 1972, 40:167-185.
20. The vegetation of South Africa, Lesotho and Swaziland. Strelitzia 2006, 19:1-807. Mucina LRutherford MC. Eds
21. Owen-Smith N. Foraging responses of kudus to seasonal changes in food resources: elasticity in constraints. Ecology 1994, 75:1050-1062.
22. Petrides GA. Principal foods versus preferred foods and their relations to stocking rate and range condition. Biological Conservation 1975, 7:161-168.
23. Pianka ER. Evolutionary Ecology 1994, Harper Collins, New York
24. Prins HHT, de Boer WF, van Oeveren H, Correia A, Mafuca J, Olff H. Co-existence and niche segregation of three small bovid species in southern Mozambique. African Journal of Ecology 2006, 44:186-198.
25. Quinn GP, Keough MJ. Experimental Design and Data Analysis for Biologists 2002, Cambridge University Press, Cambridge
26. Robbins CT. Wildlife Feeding and Nutrition 1993, Academic Press, Orlando, USA
27. Rouget M, Richardson DM, Cowling RM, Lloyd JW, Lombard AT. Current patterns of habitat transformation and future threats to biodiversity in terrestrial ecosystems of the Cape Floristic Region, South Africa. Biological Conservation 2003, 112:63-85.
28. Shipley LA, Felicetti L. Fiber digestibility and nitrogen requirements of blue duikers (Cephalophus monticola). Zoo Biology 2002, 21:123-134.
29. Smith M. Faecal Composition as Indicator of Diet Composition in the Cape Grysbok, Raphicerus melanotis 1991, Honours thesis, University of Port Elizabeth, Port Elizabeth, South Africa
30. Sparks DR, Malechek JC. Estimating percentage dry weight in diets using a microscopic technique. Journal of Range Management 1968, 21:264-265.
31. Stuart C, Stuart T. Field Guide to the Larger Mammals of Africa 1997, Revised Edition, Struik Publishers, Cape Town
32. Teague WR. Management of Fynbos (Macchia). Veld Management in South Africa 1999, 327-333. Tainton NM. ed, pp, University of Natal Press, South Africa
33. Verlinden C, Wiley RH. The constraints of digestive rate: an alternative model of diet selection. Evolutionary Ecology 1989, 3:264-273.
34. Wenninger PS, Shipley LA. Harvesting, rumination, digestion, and passage of fruit and leaf diets by a small ruminant, the blue duiker. Oecologia 2000, 123:466-474.
35. Whelan CJ, Brown JS. Optimal foraging and gut constraints: reconciling two schools of thought. Oikos 2005, 110:481-496.
36. Wilson SL. The Influence of Body Size on the Foraging Behaviour of Thicket Biome Browsers 2002, PhD thesis, University of Port Elizabeth, Port Elizabeth, South Africa
37. Yelenik SG, Stock WD, Richardson DM. Functional group identity does not predict invader impacts: differential effects of nitrogen-fixing exotic plants on ecosystem function. Biological Invasions 2007, 9:117-125.