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Agroforestry Systems: A Boon or Bane for Mammal Conservation in Northeastern India?

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Abstract

The degradation, fragmentation and isolation of tropical forests have led to the formation of small patches of human dominated landscapes interspersed with forest fragments. This affects the wildlife habitat and its population negatively. These human landscapes have been observed to have agroforestry systems as a dominant cropping practice in Assam, India. The present study was carried out in agroforestry systems (agri-silviculture systems, home gardens and tea gardens) to understand their role in the conservation of mammal species. Line transects and camera traps were used for recording mammal diversity. Altogether, 17 species of mammals belonging to 16 genera and 14 families were recorded in the selected agroforestry systems. The highest species richness was found in the home gardens (14) and the lowest was found in the agri-silviculture system (10). Home garden had the highest mammal encounter rate and relative abundance. Only five species of mammals were recorded through camera trapping. According to the IUCN Red List, 6% of mammal species recorded in the selected agroforestry systems were endangered or near threatened and 18% were vulnerable. The highest hunting trap encounter rate was found in tea garden (139 traps, 0.181 traps km−1, 24 captures). Distance from forest was inversely proportional whereas hunting threat was directly proportional to mammal species richness. The only and strongest predictor of mammal species richness was hunting threat which accounted for 53.5% of variation in mammal species richness in the study area, implying that the agroforestry systems are capable of conserving species if hunting pressure is reduced. Therefore, promotion of alternative livelihood and formation of community conservation groups are needed to increase and protect the mammalian diversity in these agroforestry systems. Thus, agroforestry systems can act as a suitable habitat next to forests for the dwindling wildlife population.

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Acknowledgements

We are thankful to the Director and Head of Department of Forestry, North Eastern Regional Institute of Science and Technology (Deemed-to-be-University) for their administrative support and to the Council of Scientific and Industrial Research, New Delhi for providing financial support to carry out this work. We are thankful to the owners of the home gardens, agri-silviculture systems and tea gardens for providing permission to conduct the study. We are grateful to all the field assistants for their support in field work. We are also thankful to Dr. Anirudh Majumdar, Mr. Akash Jaiswal and the anonymous reviewers for their valuable suggestions which helped us improve the manuscript.

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  1. Department of Forestry, ANDUAT, Ayodhya, Uttar Pradesh, India

    Yashmita-Ulman

  2. Department of Zoology, Kalinga University, Raipur, Chhattisgarh, India

    Manoj Singh

  3. Department of Forestry, North Eastern Regional Institute of Science and Technology (Deemed to be University), Nirjuli, Itanagar, Arunachal Pradesh, 791109, India

    Awadhesh Kumar & Madhubala Sharma

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Yashmita-Ulman, Singh, M., Kumar, A. et al. Agroforestry Systems: A Boon or Bane for Mammal Conservation in Northeastern India?. Proc Zool Soc 74, 28–42 (2021). https://doi.org/10.1007/s12595-020-00335-5

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