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Ants Indicate Urbanization Pressure in Sacred Groves of Southwest India:A Pilot Study


Affiliations
1 Ecology and Evolutionary Biology Laboratory, Department of Animal Science, Central University of Kerala, Padannakad 671 314, India
 

Sacred groves may contain remnants of pristine and primary forests outside the state-owned protected area system. As they are small fragments and located in the neighbourhood of human settlements, towns, and cities, they are likely to be affected by urbanization. We studied the effect of urbanization on the ecosystem health of sacred groves of Kerala using litterdwelling ants as the indicator taxa. Ants were pitfalltrapped (10-12 traps/sacred grove) from three rural and two urban sacred groves, and identified to species. Overall, 1,119 ants of 32 species and 6 subfamilies (Aenictinae, Dolichoderinae, Ectatomminae, Formicinae, Myrmicinae and Ponerinae) were collected. This corresponds to 76.54% of the estimated species richness. Urbanization had little impact on the species diversity of ants. Abundance was remarkably high in urban sacred groves, mainly due to higher abundance of generalist and invasive species. The effect of urbanization was indicated by different ant assemblages. Rural sacred groves had nine species and three subfamilies exclusive to them as against the five exclusive species of urban sacred groves. Urban sacred groves were characterized by high abundance of Anoplolepis gracilipes, a globally important invasive species. Sacred groves were clustered based on the rural-urban gradient as hypothesized by the study.

Keywords

Biodiversity, Urbanization, Sacred Grove, Ants, Anoplolepis gracilipes, Invasive Species, Western Ghats, Biotic Invasion.
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  • Gadgil, M. and Vartak, V. D., Sacred forests of India: a plea for continued conservation. J. Bombay Nat. Hist. Soc., 1975, 72, 313–320.

  • Bhagwat, S. A. and Rutte, C., Sacred groves: potential for biodiversity management. Front. Ecol. Environ., 2006, 4, 519–524.

  • Chandrashekara, U. M. and Sankar, S., Ecology and management of sacred groves in Kerala, India. For. Ecol. Manage., 1998, 112, 165–177.

  • Lowman, M. D. and Sinu, P. A., Can the spiritual values of forests inspire effective conservation? BioScience, 2017, online early; doi:10.1093/biosci/bix057.

  • Khan, M. L., Khumbongmayum, A. D. and Tripathi, R. S., The sacred groves and their significance in conserving biodiversity an overview. Int. J. Ecol. Env. Sci., 2008, 34, 277–291.

  • Suchitra, M. Sacred groves of Kerala: from 10000 to 1200. Down to Earth, 2015; http://www.downtoearth.org.in/news/sacred-groves-of-kerala-down-from-10000-to-1200-49070 (accessed on 5 December 2016).

  • Rajendraprasad, M., Krishnan, P. N. and Pushpangadan, P., Vegetations characterization and litter dynamics of the sacred groves of Kerala, southwest India. J. Trop. For. Sci., 2000, 12, 320–335.

  • Manoj, K., Rajesh, T. P., Prashanth Ballullaya, U., Meharabi, K. M., Shibil, V. K., Rajmohana, K. and Sinu, P. A., Diversity of Platygastridae in leaf litter and understory layers of tropical rainforests of the Western Ghats biodiversity hotspot, India. Environ. Entomol., 2017, 46, 685–692.

  • Andersen, A. N., Ants as indicators of restoration success at a uranium mine in tropical Australia. Restoration Ecol., 1993, 1, 156–167.

  • Gibb, H. and Hochuli, D. F., Colonisation by a dominant ant facilitated by anthropogenic disturbance: effects on an ant assemblage composition, biomass and resource use. Oikos, 2003, 103, 469–478.

  • Alonso, L. E., Ants as indicators of diversity. In Ants. Standard Methods for Measuring and Monitoring Biodiversity (eds Agosti, D. et al.), Smithsonian Institution Press, Washington, DC, USA, 2000, pp. 80–88.

  • Belshaw, R. and Bolton, B., The effect of forest disturbance on the leaf litter ant fauna in Ghana. Biodiv. Conserv., 1993, 2, 656–666.

  • Underwood, E. C. and Fisher, B. L., The role of ants in conservation monitoring: if, when, and how. Biol. Conserv., 2006, 132, 166–182.

  • Menke, S. B., Guénard, B., Sexton, J. O., Weiser, M. D., Dunn, R. R. and Silverman, J., Urban areas may serve as habitat and corridors for dry-adapted, heat tolerant species; an example from ants. Urban Ecosyst., 2011, 14, 135–163.

  • Sanford, M. P., Manley, P. N. and Murphy, D. D., Effects of urban development on ant communities: implications for ecosystem services and management. Conserv. Biol., 2009, 23, 131–141.

  • Lessard, J. P. and Buddle, C. M. The effects of urbanization on ant assemblages (Hymenoptera: Formicidae) associated with the Molson Nature Reserve, Quebec. Can. Entomol., 2005, 137, 215–225.

  • King, J. R. and Porter, S. D., Evaluation of sampling methods and species richness estimators for ants in upland ecosystems in Florida. Environ. Entomol., 2005, 34, 1566–1578.

  • Colwell, R. K. and Coddington, J. A., Estimating terrestrial biodiversity through extrapolation. Philos. T. R. Soc. London B, 1994, 345, 101–118.

  • Andersen, A. N., Using ants as bioindicators: multiscale issues in ant community ecology. Conserv. Ecol., 1997, 1, 1–17.

  • R Core Team R: A language and environment for statistical computing. R Foundation for statistical computing, Vienna, Austria. http://www.R-project.org, 2014.

  • Colwell, R. K., EstimateS: statistical estimation of species richness and shared species from samples. Version5, http://viceroy.eeb.uconn.edu/estimates, 1997.

  • Wetterer, J. K., Worldwide distribution and potential spread of the long-legged ant, Anoplolepis gracilipes (Hymenoptera: Formicidae). Sociobiology, 2005, 45, 1–21.

  • Mack, R. N., Simberloff, D., Lonsdale, W. M., Evans, H., Clout, M. and Bazzaz, F. A., Biotic invasions: causes, epidemiology, global consequences, and control. Ecol. Appl., 2000, 10, 689–710.

  • McKinney, M. L. Urbanization as a major cause of biotic homogenization. Biol. Conserv., 2006, 127, 247–260.

  • Holway, D. A. and Suarez, A. V., Homogenization of ant communities in Mediterranean California: the effects of urbanization and invasion. Biol. Conserv., 2006, 127, 319–326.

  • Forys, E. A., Allen, C. R. and Wojcik, D. P., Distribution of the red imported fire ant in the Lower Florida Keys: effects of human development and roads and spatial overlap with vulnerable rare species. Biol. Conserv., 2002, 108, 27–33.

  • Sinu, P. A., Sibisha, V. C., Nikhila Reshmi, M. V., Reshmi, K. S., Jasna, T. V., Aswathi, K. and Megha, P. P., Invasive ant (Anoplolepis gracilipes) disrupts pollination in pumpkin. Biol. Invasions, 2017, online early; doi:10.1007/s10530-017-1470-9.


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  • Ants Indicate Urbanization Pressure in Sacred Groves of Southwest India:A Pilot Study

Abstract Views: 530  |  PDF Views: 137

Authors

T. P. Rajesh
Ecology and Evolutionary Biology Laboratory, Department of Animal Science, Central University of Kerala, Padannakad 671 314, India
U. Prashanth Ballullaya
Ecology and Evolutionary Biology Laboratory, Department of Animal Science, Central University of Kerala, Padannakad 671 314, India
Parvathy Surendran
Ecology and Evolutionary Biology Laboratory, Department of Animal Science, Central University of Kerala, Padannakad 671 314, India
Palatty Allesh Sinu
Ecology and Evolutionary Biology Laboratory, Department of Animal Science, Central University of Kerala, Padannakad 671 314, India

Abstract


Sacred groves may contain remnants of pristine and primary forests outside the state-owned protected area system. As they are small fragments and located in the neighbourhood of human settlements, towns, and cities, they are likely to be affected by urbanization. We studied the effect of urbanization on the ecosystem health of sacred groves of Kerala using litterdwelling ants as the indicator taxa. Ants were pitfalltrapped (10-12 traps/sacred grove) from three rural and two urban sacred groves, and identified to species. Overall, 1,119 ants of 32 species and 6 subfamilies (Aenictinae, Dolichoderinae, Ectatomminae, Formicinae, Myrmicinae and Ponerinae) were collected. This corresponds to 76.54% of the estimated species richness. Urbanization had little impact on the species diversity of ants. Abundance was remarkably high in urban sacred groves, mainly due to higher abundance of generalist and invasive species. The effect of urbanization was indicated by different ant assemblages. Rural sacred groves had nine species and three subfamilies exclusive to them as against the five exclusive species of urban sacred groves. Urban sacred groves were characterized by high abundance of Anoplolepis gracilipes, a globally important invasive species. Sacred groves were clustered based on the rural-urban gradient as hypothesized by the study.

Keywords


Biodiversity, Urbanization, Sacred Grove, Ants, Anoplolepis gracilipes, Invasive Species, Western Ghats, Biotic Invasion.

References





DOI: https://doi.org/10.18520/cs%2Fv113%2Fi02%2F317-322