Sharma, Rohan (2023) Role of anthropogenic disturbance on odonate diversity and community composition in the Myristica Swamps of the Western Ghats, India. Masters thesis, Ashoka Trust for Research in Ecology and the Environment, TDU.

[thumbnail of Rohan Sharma_Thesis-2023.pdf] Text
Rohan Sharma_Thesis-2023.pdf - Published Version
Restricted to Repository staff only until 25 July 2025.

Download (1MB) | Request a copy

Abstract

Once sprawling across the rivers of the Western Ghats, the Myristica Swamps, which were a vast network of freshwater swamps, have dwindled into mere fragments over time, primarily due to human activities. These fragile fragments of Myristica Swamps are found in parts of Karnataka, Kerala, Maharashtra and Goa. The objective of my study was to assess if human disturbances to the Myristica Swamps impact the Odonate communities. This study was conducted across 14 swamps in the Uttara Kannada district of Karnataka during the months of March and April. The presence or intensity of disturbance was not found to have a significant impact on the Odonate diversity, except when analysed separately for Anisoptera and Zygoptera. Anisoptera showed a moderately positive relationship with the intensity of disturbance. However, it was revealed that Odonate communities are more responsive towards water quality. Zygoptera showed positive relationships with dissolved oxygen, pH and total dissolved solids and a negative relationship with nutrient levels, while Anisoptera showed a negative relationship with dissolved oxygen and nutrient levels. A statistically significant relationship was found between total dissolved solids and the evenness of Odonates together and Zygoptera. This study suggests that future research should involve a family-level approach while analysing Odonata communities and that Zygoptera and Anisoptera need to be looked at separately. Overall, this study gives a brief understanding of Odonata ecology in the Myristica swamps and highlights the need for further studies across multiple seasons to better understand the complex interrelationships between Odonata and human disturbances in the Myristica swamps.

Item Type: Thesis (Masters)
Additional Information: Copyright of this thesis belongs to the authors
Subjects: A ATREE Publications > M MSc Thesis
Divisions: Academy for Conservation Science and Sustainable Studies > MSc Thesis
Depositing User: ATREE Bangalore
Date Deposited: 15 Nov 2024 08:46
Last Modified: 15 Nov 2024 08:46
URI: http://archives.atree.org/id/eprint/264

Actions (login required)

View Item
View Item