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Impact of shade management on avifaunal diversity

Impact of shade management on avifaunal diversity. Case study of the coffee agroforestry systems of Kodagu, Western Ghats (India). Harish T.T., Prakash,, C.G. Kushalappa WAC Conference – Nairobi 2009. Introduction.

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Impact of shade management on avifaunal diversity

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  1. Impact of shade management on avifaunal diversity Case study of the coffee agroforestry systems of Kodagu, Western Ghats (India) Harish T.T., Prakash,, C.G. Kushalappa WAC Conference – Nairobi 2009

  2. Introduction • Avian community studies as tools for monitoring forest and agroforest ecosystems. • Few reports available on bird diversity of Western Ghats. • Landscape level dynamics question the ecological sustainability of the production system • Complementing existing tree biodiversity assessments WCA Conference, Nairobi

  3. Objectives • To determine and compare the similarity in bird species composition across semi-evergreen and moist deciduous vegetation types. • To assess the impact changes on the canopy cover have on bird species diversity. • To study the community structure and organization of bird species based on their food and feeding habitat. • To prepare a checklist of birds of Cauvery watershed area. WCA Conference, Nairobi

  4. Study Area WCA Conference, Nairobi

  5. 500m 50m Sampling WCA Conference, Nairobi

  6. 25m 25m 200m 25m Methods • The bird numbers on either side of the transect while on a walk along the transect was recorded between 7.00 A.M to 9.00 A.M and 4.00 A.M to 6.00 P.M • The species identification based on Ali (1996) and Grimmett et al., (1999). Line Transect method WCA Conference, Nairobi

  7. Distribution of species among habitats WCA Conference, Nairobi

  8. Comparison of biodiversity measures WCA Conference, Nairobi

  9. Canopy diversity and bird diversity WCA Conference, Nairobi

  10. Canopy density and bird diversity WCA Conference, Nairobi

  11. Impact of G. robustaon bird diversity WCA Conference, Nairobi

  12. Food Guild across habitats • The birds such as the Spotted Dove, Green Bee-eater, Greater Coucal, Red-vented Bulbul, Scarlet Minivet, House Crow were more abundant in moist deciduous region. • The birds such as Large-billed Crow, Scarlet Minivet, Red-whiskered Bulbul, White-cheeked Barbet, Brown-headed Barbet, Hill Myna, Indian Grey Hornbill, Spotted Dove and House Crow were more abundant in SEG. WCA Conference, Nairobi

  13. Foraging Guild of Birds found in different habitats • Foliage gleaners, ground gleaner, sallying bird species were more abundant in SEG. • Foliage gleaners, ground gleaner were more in plantations with native tree cover. • Ground gleaner and foliage gleaner were abundant in silver oak plantations in moist deciduous region. • Foliage gleaner, ground gleaner and sallying bird species were more abundant in plantations with native tree cover • Foliage gleaner and ground gleaner were more in silver oak plantations in semi-evergreen area. WCA Conference, Nairobi

  14. Endemic Birds of Western Ghats • Out of 16 endemic bird species of Western Ghats, 4 endemic species viz., Malabar Grey Hornbill, Malabar Parakeet, Nilgiri Flycatcher, White-bellied Treepie were recognised in both SEG & MD. • Nilgiri Flycatcher is one of the Threatened species was recognised in both SEG & MD as per Islam and Rahmani (2002). WCA Conference, Nairobi

  15. In a nutshell • The management practices in coffee plantation to give importance for retention of native tree species in the shade layer and native forests in the landscape are necessary. • Coffee plantations play an important role in the maintenance of diverse bird populations in Kodagu, and as a dry season refuge for mobile populations of omnivores, frugivores and nectarivores. WCA Conference, Nairobi

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