Abstract
The mid-elevation non-dipterocarp wet forests in southern Western Ghats, India are some of the largest stretches of undisturbed forest remaining in this biodiversity hotspot. We established a long-term study of tree phenology in this forest to study the effects of biotic and abiotic factors on phenological patterns. We measured seed predation of selected canopy trees across three years. Seed predation intensity was measured through seed fall, phenology by fruit fall, and animal abundance through transect sampling. A total of 42 tree species was sampled for phenology and 35 species for seed predation intensity. Nine of these species fruited annually, seven fruited once in two years and the remaining species fruited once in several years. Two primates and two arboreal squirrels were the major seed predators in the forest. Primates were responsible for some intact seed dispersal, while squirrels were obligate seed predators. For numerous tree species seed predators were the only seed dispersers. Seed predator abundance showed no significant changes across years except for the case of the lion tailed macaque, which appeared to show seasonal population movement. No community-wide mass fruiting phenomena were noticeable in the forest but there was significant variation in fruit availability between years. A few tree species appeared to show mast fruiting in certain years. A majority of the species suffered high levels of seed predation. Seed predation intensity decreased during mast fruiting events for certain species while for others it had no effect. There was no difference in predation intensity between annually and supra-annually fruiting species. Masting as a means of overcoming high seed predation at the population level in the Western Ghats was limited to only a few tree species.
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References
Borges, R. M. (1993). Figs, Malabar Giant Squirrels, and fruit shortages within two tropical Indian forests. Biotropica, 256, 183–190.
Crawley, M. J. (1992). Seed predators and plant population dynamics. In Fenner, M. (ed). Seeds: Ecology of Regeneration. London: CABI International, Great Britain, pp. 157–191.
Crome, F.H.J. (1975). The ecology of fruit pigeons in tropical northern Queensland. Australian Wildlife Research, 2, 155–185.
Curran, L., & Leighton, M. L. (2000). Vertebrate response to spatiotemporal variation in seed production of mast-fruiting dipterocarpaceae. Ecological Monographs, 70, 101–128.
Davis, S.D., V.H. Heywood, & A.C. Hamilton (1995). Centers of Plant Diversity-A guide and strategy for conservation. vol 2. Asia, Australia and The Pacific. Gland, Switzerland: WWF and IUCN.
Ganesan, R., & Parthasarthy, N. (manuscript). Seasonality of root production in the evergreen and semi evergreen forest of Kalakad-Mundanthurai Tiger reserve.
Ganesh, T. (1996). Fruting patterns among canopy trees and fruit use by vertebrates in a wet evergreen forest of the southern Western Ghats, India. Ph.D dissertation, Pondicherry University, India.
Ganesh, T., Ganesan, R,. Devy, M.S., Davidar, P., & Bawa, K.S. (1996). An assessment of plant biodiversity at a mid-elevation evergreen forest of Kalakad Mundanthurai Tiger Reserve, Western Ghats, India. Current Science 71, 379–392.
Gautier-Hion, A. (1990). Interactiions among fruit and vertebrate fuit-eaters in an African tropical rain forest. In K.S. Bawa and M. Hadley (Eds.), Reproductive Ecology of Tropical forest plants. (pp 219–232), Paris: UNESCO and Parthenon Publishing.
Gautier-Hion, A., Gautier, J. P., & Maisels, F. (1993). Seed dispersal versus seed predation-an intersite comparison of two related African monkeys. Vegetatio, 108, 237–244.
Green, K. M., & Minkowski, K. (1977). The lion tailed macaque and its South Indian Rain Forest Habitat. In: G. H. Bourne, P. Rainier (Eds.), Primate Conservation. New York: Academic Press.
Harper, J. L. (1977). Population Biology of Plants, London: Academic Press.
Henri A. N., Chandrabose, M., Swaminathan M.S., & Nair. N.C. (1982). Agasthymalai and its environs: a potential area for biosphere reserve. Bombay Natural History Society, 81, 282–290.
Herrera, C. M., Jordano, P., Guitián, J. & Traveset, A. (1998). Annual variability in seed production by woody plants and the masting concept: reassessment of principles and relationship to pollination and seed dispersal. American Naturalist, 152, 576–594
Hubbell, S.P. (1998). The maintenance of diversity in a neotropical tree community: conceptual issues, current evidence, and challenges ahead. In Forest biodiversity research, monitoring and modeling: conceptual back ground and old world case studies. F. Dalmeier, & J. A. Comiskey (Eds.), MAB Series, Parthenon Publishing Group Ltd.
Jacobs, M. (1988). The Tropical Rainforest. Berlin: Springer-Verlag
Janzen, D.H. (1969). Seed eaters versus seed size, number, toxicity and dispersal. Evolution 23, 1–27.
Janzen, D.H. (1971). Seed predation by animals. Annual Review of Ecology and Systematics, 2, 465–492.
Jordano, P. (1992). Fruits and Frugivory. In Fenner, M (Ed.) Seeds: The ecology of regeneration in plant communities. (pp. 105–156). London: CAB International.
Kannan, R. (1994). Ecology and Conservation of the Great Pied Hornbill (Buceros bicornis) in the Western Ghats of Southern India. Unpublished Ph.D. thesis, University of Arkansas, USA
Kinzey, W.G. & Norconk, M.A. (1990). Hardness as a basis of fruit choice in two sympatric primates. American Journal of Primatology. 81, 5–15.
Kinzey, W.G & Norconk, M.A. (1993). Physical and chemical properties of fruits and seeds eaten by Pithecia and Chiropotes in Surinam and Venezuela. International Journal of Primatology, 14, 207–227.
Leigh, E. G. Jr., & Alba G. de (1992). Barro Colorado Island, Panama: Basic Research and Conservation. The George Wright Forum, 9, 32–45.
Leighton, M. & Leighton, D.R. (1983). Vertebrate responses to fruiting seasonality within a Bornean rain forest. In Sutton, S.L., Whitmore, T.C & Chadwick, A.C, (Eds.), Tropical Rain Forests: Ecology and Management (pp. 181–209). Oxford, UK: Blackwell Scientific Publications.
Menon, S.A. (1993). Ecology and Conservation of the endangered lion-tailed Macacque, Macaca silenus, in the landscape mosaic of Western Ghats. Ph.D. thesis, Ohio State University, USA.
Murali, K.S (1992). Vegetative and reproductive phenology of a tropical dry deciduous forest, Southern India. Ph.D. thesis. Centre for Ecological Sciences, Indian Institute of Science, Bangalore.
Nilsson, S.G. & Wastljung, U. (1987). Seed predation and cross-pollination in moist seedling beech (Fagus Sylvatica) patches. Ecology, 68, 260–265.
Newstrom, L.E., Frankie, G.W., Baker, H.G. (1994). A new classification of plant phenology based on flowering patterns of lowland tropical rainforest trees at La Selva, Costa Rica. Biotropica, 16, 141–159.
Oates, J.F., Waterman, P.G., & Chos, G.M. (1980). Food selection by the South Indian leaf-Monkey, Prebytis johnii, in relation to food chemistry. Oecologia, 45, 45–56.
Orians, G.H. (1969). The number of bird species in some tropical forests. Ecology, 50, 783–801.
Peres, C.R. (1993). Shell strength and primate seed predation of nontoxic species in Eastern and Southern Africa. International Journal of Primatology, 14, 315–343.
Prasad, S.N. & Hegde, M. (1986). Phenology and seasonality in the tropical deciduous forest of Bandipur, South India. Proceedings of the Indian Academy of Sciences (Plant Science) 96, 121–133.
Ramachandran, K.K. (1988). Ecology and behaviour of Malabar Giant Squirrel Ratufa indica maxima (Schreber). Kerala Forest Research Institute Report 55, Peechi, Kerala.
Ramesh, B.R., Menon, S., & Bawa, K.S. (1997). A vegetation based approach to Biodiversity: Gap Analysis in the Agasthyamalai Region, Western Ghats, India. Ambio, 26, 529–536.
Schupp, E.W. (1988). Seed and early seedling predation in the forest understorey and in treefall gaps. Oikos, 51, 71–78.
Singh, J.S. & Singh, V.K. (1992). Phenology of seasonally dry tropical forest. Current Science, 63, 684–689.
Silverton, J.W. (1980). The evolutionary ecology of mast seeding in trees. Biological Journal of the Linnean Society, 14, 235–250.
Smith, C.C., Hamrick, J.L. & C.L. Kramer. (1990). The advantage of mast year for wind pollination. American Naturalist, 136, 154–166.
Terborgh, J. (1986). Community aspects of frugivory in tropical forests. In: A Estrada & T. Fleming (Eds.), Frugivores and Seed Dispersal (pp 371–384). Dordrecht, the Netherlands: Junk Publishers.
Terborgh J. (1990). Seed and fruit dispersal-Commentary. In K.S. Bawa and M. Hadley (Eds.), Reproductive Ecology of Tropical Forest Plants (pp. 181–190). Paris: UNESCO and Parthenon Publishing.
Terborgh, J., Losos, E., Riley, P., & Riley, M.B. (1993). Predation by vertebrates and invertebrates on the seed of five tropical tree species of an Amazonian forest. Vegetatio, 108, 375–386.
Van Schaik, C. P., Terborgh, J., Wright, S.J. (1993). The phenology of the tropical forests, Adaptive significance and consequences for primary consumers. Annual Review of Ecology and Systematics, 24, 353–377.
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Ganesh, T., Davidar, P. (2005). Fruiting Phenology and Pre-dispersal Seed Predation in a Rainforest in Southern Western Ghats, India. In: Dew, J.L., Boubli, J.P. (eds) Tropical Fruits and Frugivores. Springer, Dordrecht. https://doi.org/10.1007/1-4020-3833-X_8
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