Effects of Habitat Structure and Adjacent Habitats on Birds in Tropical Rainforest Fragments and Shaded Plantations in the Western Ghats, India
Received: 31 August 2004 Accepted: 04 August 2005 DOI:
Cite this article as: Raman, T.R.S. Biodivers Conserv (2006) 15: 1577. doi:10.1007/s10531-005-2352-5 Abstract
As large nature reserves occupy only a fraction of the earth’s land surface, conservation biologists are critically examining the role of private lands, habitat fragments, and plantations for conservation. This study in a biodiversity hotspot and endemic bird area, the Western Ghats mountains of India, examined the effects of habitat structure, floristics, and adjacent habitats on bird communities in shade-coffee and cardamom plantations and tropical rainforest fragments. Habitat and birds were sampled in 13 sites: six fragments (three relatively isolated and three with canopy connectivity with adjoining shade-coffee plantations and forests), six plantations differing in canopy tree species composition (five coffee and one cardamom), and one undisturbed primary rainforest control site in the Anamalai hills. Around 3300 detections of 6000 individual birds belonging to 106 species were obtained. The coffee plantations were poorer than rainforest in rainforest bird species, particularly endemic species, but the rustic cardamom plantation with diverse, native rainforest shade trees, had bird species richness and abundance comparable to primary rainforest. Plantations and fragments that adjoined habitats providing greater tree canopy connectivity supported more rainforest and fewer open-forest bird species and individuals than sites that lacked such connectivity. These effects were mediated by strong positive effects of vegetation structure, particularly woody plant variables, cane, and bamboo, on bird community structure. Bird community composition was however positively correlated only to floristic (tree species) composition of sites. The maintenance or restoration of habitat structure and (shade) tree species composition in shade-coffee and cardamom plantations and rainforest fragments can aid in rainforest bird conservation in the regional landscape.
Keywords Agriculture Anamalai hills Bird communities Cardamom Coffee Countryside biogeography Fragmentation Habitat structure and floristics Landscape matrix Tropical wet evergreen forest References Ali, S., Ripley, S.D. 1983Handbook of the Birds of India and Pakistan Oxford University Press Delhi Google Scholar Beehler, B.M., Raju, K.S.R.K., Ali, S. 1987 Avian use of man-disturbed forest habitats in the Eastern Ghats, India Ibis 129 197 211 Google Scholar Bibby, C.J., Burgess, N.D., Hill, D.A. 1992Bird Census Techniques Academic Press London Google Scholar BirdLife International 2001Threatened Birds of the World Lynx Edicions and BirdLife International Barcelona and Cambridge Google Scholar Bowman, D.M.J.S., Woinarski, J.C.Z., Sands, D.P.A., Wells, A., McShane, V.J. 1990 Slash-and-burn agriculture in the wet coastal lowlands of Papua New Guinea: response of birds, butterflies and reptiles J. Biogeogr. 17 227 239 CrossRef Google Scholar Brown, J.H., Kodric-Brown, A. 1977 Turnover rates in insular biogeography: effect of immigration on extinction Ecology 58 445 449 CrossRef Google Scholar Brown, S., Lugo, A.E. 1990 Tropical secondary forests J. Trop. Ecol. 6 1 32 CrossRef Google Scholar Cincotta, R.P., Wisnewski, J., Engelman, R. 2000 Human population in the biodiversity hotspots Nature 404 990 992 PubMed CrossRef Google Scholar Clarke, K.R., Gorley, R.N. 2001Primer v5: User Manual/Tutorial PRIMER-E Plymouth Google Scholar Clarke, K.R., Warwick, R.M. 1994Change in Marine Communities: An Approach to Statistical Analysis and Interpretation Plymouth Marine Laboratory Plymouth Google Scholar Coffee Board 2001Database on Coffee Coffee Board Bangalore Google Scholar Collar, N.J., Crosby, M.J., Stattersfield, A.J. 1994Birds to Watch 2: The World list of Threatened Birds BirdLife International Cambridge Google Scholar
Colwell R.K. 1997. EstimateS: Statistical Estimation of Species Richness and Shared Species from Samples. Version 6.01b. Internet URL:
Colwell, R.K., Coddington, J.A. 1994 Estimating terrestrial biodiversity through extrapolation Philos. Trans. Roy. Soc. London Series B 345 101 118 Google Scholar Congreve, H.R.T. 1942The Anamalais Associated Printers Madras Google Scholar Daily, G.C. 2001 Ecological forecasts Nature 411 245 PubMed CrossRef Google Scholar Daily, G.C., Ehrlich, P.R., Sánchez-Azofeifa, G.A. 2001 Countryside biogeography: use of human-dominated habitats by the avifauna of southern Costa Rica Ecol. Appl. 11 1 13 Google Scholar Daniels, R.J.R., Hegde, M., Gadgil, M. 1990 Birds of man-made habitats: the plantations Proc. Ind. Acad. Sci. (Anim. Sci.) 99 79 89 CrossRef Google Scholar Daniels, R.J.R., Joshi, N.V., Gadgil, M. 1992 On the relationship between bird and woody plant species diversity in the Uttara Kannada District of south India Proc. Nat. Acad. Sci. (USA) 89 5311 5315 CrossRef Google Scholar Estrada, A., Coates-Estrada, R., Meritt, D., Jr. 1997 Anthropogenic landscape changes and avian diversity at Los Tuxtlas, Mexico Biodiv. Conserv. 6 19 43 CrossRef Google Scholar
Gamble J.S. and Fischer C.E.C. 1935. Flora of the Presidency of Madras. Reprint3 volumes. Bishen Singh Mahendra Pal Singh, Dehra Dun.
Greenberg, R., Bichier, P., Angon, A.C., Rietsma, R. 1997a Bird populations in shade and sun coffee plantations in central Guatemala Conserv. Biol. 11 448 459 CrossRef Google Scholar Greenberg, R., Bichier, P., Sterling, J. 1997b Bird populations in rustic and planted shade coffee plantations of Eastern Chiapas, Mexico Biotropica 29 501 514 CrossRef Google Scholar Greenberg, R., Bichier, P., Angon, A.C., MacVean, C., Perez, R., Cano, E. 2000 The impact of avian insectivory on arthropods and leaf damage in some Guatemalan coffee plantations Ecology 81 1750 1755 CrossRef Google Scholar Hemelrijk, C.K. 1990 Models of, and tests forreciprocity, unidirectionality and other social interaction patterns at a groups level Anim. Behav. 39 1013 1029 CrossRef Google Scholar Johnson, M.D., Sherry, T.W. 2001 Effects of food availability on the distribution of migratory warblers among habitats in Jamaica J. Anim. Ecol. 70 546 560 CrossRef Google Scholar Kannan, R. 1998 Avifauna of the Anaimalai hills (Western Ghats) of southern India J. Bombay Nat. Hist. Soc. 95 193 214 Google Scholar Krebs, C.J. 1989Ecological Methodology Harper and Row New York Google Scholar Kumar, M.A., Singh, M., Srivastava, S.K., Udhayan, A., Kumara, H.N., Sharma, A.K. 2002 Distribution patterns, relative abundance and management of mammals in Indira Gandhi Wildlife Sanctuary, Tamil NaduIndia J. Bombay Nat. Hist. Soc. 99 184 210 Google Scholar
Laurance W.F., Bierregaard R.O.Jr., Gascon C. and others 1997. Tropical forest fragmentation: synthesis of a diverse and dynamic discipline. In: Laurance W.F. and Bierregaard R.O.Jr. (eds), Tropical Forest Remnants: Ecology, Management, and Conservation of Fragmented Communities. University of Chicago Press, Chicago, pp. 502–514.
Leck, C.F. 1979 Avian extinctions in an isolated tropical wet forest preserve Auk 96 343 352 Google Scholar Luck, G.W., Daily, G.C. 2003 Tropical countryside bird assemblages: richness, composition, and foraging differ by landscape context Ecol. Appl. 13 235 247 Google Scholar Mani, M.S. eds. 1974Ecology and Biogeography of India Dr. W. Junk Publishers The Hague Google Scholar Manly, B.F.J. 1994Multivariate Statistical Methods: A Primer2 Chapman and Hall London, UK Google Scholar Menon, S., Bawa, K.S. 1997 Applications of geographical information systems, remote sensing and a landscape ecology approach to biodiversity conservation in the Western Ghats Curr. Sci. 73 134 145 Google Scholar Myers, N., Mittermeier, R.A., Mittermeier, C.G., da Fonseca, G.A.B., Kent, J. 2000 Biodiversity hotspots for conservation priorities Nature 403 853 858 PubMed CrossRef Google Scholar Nair, S.C. 1991The Southern Western Ghats: A Biodiversity Conservation Plan INTACH New Delhi Google Scholar Norušis, M.J. 1990SPSS/PC+ Statistics 4.0 SPSS Inc. Chicago Google Scholar Olson, D.M., Dinerstein, E. 1998 The global 200: a representation approach to conserving the Earth’s most biologically valuable ecoregions Conserv. Biol. 12 502 515 CrossRef Google Scholar Parthasarathy, N. 2001 Changes in forest composition and structure in three sites of tropical evergreen forest around SengaltheriWestern Ghats Curr. Sci. 80 389 393 Google Scholar Pascal, J.P. 1988Wet Evergreen Forests of the Western Ghats of India: Ecology, StructureFloristic Composition and Succession Institut Français de Pondichéry Pondicherry Google Scholar Pascal, J.P., Ramesh, B.R. 1997A Field Key to the Trees and Lianas of the Evergreen Forests of the Western Ghats (India) Institut Français de Pondichéry Pondicherry Google Scholar Perfecto, I., Vandermeer, J. 2002 Quality of agroecological matrix in a tropical montane landscape: ants in coffee plantations in southern Mexico Conserv. Biol. 16 174 182 CrossRef Google Scholar Perfecto, I., Mas, A., Dietsch, T., Vandermeer, J. 2003 Conservation of biodiversity in coffee agroecosystems: a tritaxa comparison in southern Mexico Biodiv. Conserv. 12 1239 1252 CrossRef Google Scholar Ralph, C.J. Sauer, J.R. Droege, S. eds. 1995Monitoring Bird Populations by Point Counts USDA, Forest Service, Pacific Southwest Research Station Albany, California Google Scholar
Raman T.R.S. 2001.Community Ecology and Conservation of Tropical Rainforest Birds in the Southern Western Ghats, India. Ph.D. thesis, Indian Institute of Science, Bangalore.
Raman, T.R.S. 2003 Assessment of census techniques for inter-specific comparisons of tropical rainforest bird densities: a field evaluation in the Western Ghats, India Ibis 145 9 21 CrossRef Google Scholar Raman, T.R.S., Mudappa, D. 2003a Bridging the gap: sharing responsibility for ecological restoration and wildlife conservation on private lands in the Western Ghats Social Change 33 129 141 Google Scholar Raman, T.R.S., Mudappa, D. 2003b Correlates of hornbill distribution and abundance in rainforest fragments in the southern Western Ghats, India Bird Conserv. Int. 13 199 212 CrossRef Google Scholar Raman, T.R.S., Rawat, G.S., Johnsingh, A.J.T. 1998 Recovery of tropical rainforest avifauna in relation to vegetation succession following shifting cultivation in Mizoramnorth-east India J. Appl. Ecol. 35 214 231 CrossRef Google Scholar Raman, T.R.S., Sukumar, R. 2002 Responses of tropical rainforest birds to abandoned plantations, edges and logged forest in the Western Ghats, India Anim. Conserv. 5 201 216 CrossRef Google Scholar Rappole, J.H., King, D.I., Rivera, J.H.V. 2003 Coffee and conservation Conserv. Biol. 17 334 336 CrossRef Google Scholar Renjifo, L.M. 2001 Effect of natural and anthropogenic landscape matrices on the abundance of subandean bird species Ecol. Appl. 11 14 31 Google Scholar Ricketts, T.H. 2004 Tropical forest fragments enhance pollinator activity in nearby coffee crops Conserv. Biol. 18 1 10 CrossRef Google Scholar Ricketts, T.H., Daily, G.C., Ehrlich, P.R., Michener, C.D. 2004 Economic value of tropical forest to coffee production Proc. Nat. Acad. Sci. (USA) 101 12579 12582 CrossRef Google Scholar Shahabuddin, G. 1997 Preliminary observations on the role of coffee plantations as avifaunal refuges in the Palni hills of the Western Ghats J. Bombay Nat. Hist. Soc. 94 10 21 Google Scholar Sherry, T.W. 2000 Shade coffee: a good brew even in small doses Auk 117 563 568 Google Scholar
Smithsonian Migratory Bird Center 1999. Certified shade-grown coffees. <http://www.si.smbc/ coffee/cafelist.htm>.
Stattersfield, A.J., Crosby, M.J., Long, A.J., Wege, D.C. 1998Endemic Bird Areas of the World: Priorities for Biodiversity Conservation Birdlife International Cambridge Google Scholar Stouffer, P.C., Bierregaard, R.O., Jr. 1995a Use of Amazonian forest fragments by understory insectivorous birds Ecology 76 2429 2445 CrossRef Google Scholar Stouffer, P.C., Bierregaard, R.O., Jr. 1995b Effects of fragmentation on understory hummingbirds in Amazonian Brazil Conserv. Biol. 9 1085 1094 CrossRef Google Scholar
Tea Board 2002. Tea Board home page. <http://www.teaindia.org/curr_statistics.html>.
Terborgh, J. 1985 Habitat selection in Amazonian birds Cody, M.L. eds. Habitat Selection in Birds Academic Press, Inc. Orlando 311 340 Google Scholar Tejeda-Cruz, C., Sutherland, W.J. 2004 Bird responses to shade coffee production Anim. Conserv. 7 169 179 CrossRef Google Scholar Thiollay, J.M. 1995 The role of traditional agroforests in the conservation of rain forest bird diversity in Sumatra Conserv. Biol. 9 335 353 CrossRef Google Scholar Turner, I.M., Corlett, R.T. 1996 The conservation value of small isolated fragments of lowland tropical rain forest Trends Ecol. Evol. 11 330 333 CrossRef Google Scholar Umapathy, G., Kumar, A. 2000 The occurrence of arboreal mammals in the rain forest fragments in the Anamalai hills, south India Biol. Conserv. 92 311 319 CrossRef Google Scholar Venkatachalam, L. 2005 Coffee: need to achieve market balance The Hindu Survey of Indian Agriculture 2005 113 115 Google Scholar Verner, J. 1985 Assessment of counting techniques Curr. Ornithol. 2 247 302 Google Scholar Wolda, H. 1981 Similarity indices, sample size and diversity Oecologia 50 296 302 CrossRef Google Scholar Wunderle, J.H., Jr. 1999 Avian distribution in Dominican shade coffee plantations: area and habitat relationships J. Field Ornithol. 70 58 70 Google Scholar Zar, J.H. 1999Biostatistical Analysis4 Prentice-Hall New Jersey Google Scholar