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      Permanent link:
      https://www.ias.ac.in/article/fulltext/anml/099/01/0079-0089

    • Keywords

       

      Western ghats; birds; plantations

    • Abstract

       

      One-hectare plots were sampled for bird species diversity in the Uttara Kannada district. These plots represented well-preserved evergreen/semievergreen forests, secondary/moist deciduous forests showing different levels of degradation by man and plantations of teak, eucalypts and betelnut. It was found that the betelnut plantation and the evergreen/semievergreen forests had the least bird species diversity ofH′ = 2.58 and 2.61 respectively. The eucalypt and teak plantations hadH′ = 2.69 and 2-92 respectively. In the secondary/moist deciduous forests it ranged from 2.80–3.39. Despite the apparent increase in diversity in the man-modified vegetation types, it was found that there was a gradual displacement of the bird species composition from what was typical to the evergreen forests to those of more urban and scrubby habitats in these man-modified vegetation types. This was particularly so in the eucalypt plantation.

    • Author Affiliations

       

      R J Ranjit Daniels1 Malati Hegde1 Madhav Gadgil1

      1. Centre for Ecological Sciences, Indian Institute of Science, Bangalore - 560 012, India
    • Dates

       
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