Bird diversity and distribution along the Sunkosh River, Tsirang and Dagana District in southern Bhutan

Table of Contents

1. Introduction

1.1 Background

1.2 Problem Statement

1.3 Research Question

1.4 Objectives

1.5 Scope and Limitation

2. Literature Review

2.1 Evolutionary History

2.2 Ecological Importance of Birds

2.3 Diversity

2.4 Distribution

2.5 Conservation Threat

3. Materials and Methods

3.1 Study Area

3.2 Materials

3.3 Methods

3.4 Data analysis

4. Results and Discussion

4.1 Bird Species Composition

4.2 Bird Species Diversity

4.3 Relationship between altitude and BSC, BSD, SE

4.4 Relationship between Species composition, species diversity and species evenness

4.5 Species Distribution

4.6 Bird abundance in the entire study area

5. Conclusion and Recommendation

Research Objectives and Themes

The primary objective of this study is to provide comprehensive baseline data on bird species diversity, richness, and evenness along the Sunkosh River in the Tsirang and Dagana districts of Bhutan, specifically assessing how different habitat types influence avian distribution in a region currently threatened by planned industrial development.

• Assessment of bird species diversity and distribution across aquatic and terrestrial habitats.
• Comparative analysis of biodiversity between river confluence, human settlement, and undisturbed forest sites.
• Correlation analysis between altitude, habitat modification, and bird community composition.
• Evaluation of the potential ecological impacts of large-scale infrastructure projects on local avian populations.

Excerpt from the Book

Summary of Chapters

1. Introduction: Outlines the ecological importance of birds in Bhutan and establishes the need for baseline biodiversity data in the Sunkosh River region due to planned infrastructure projects.

2. Literature Review: Provides a theoretical overview of bird evolutionary history, their ecological roles as indicators, and the threats posed by anthropogenic landscape changes.

3. Materials and Methods: Details the site characteristics and the point count survey techniques used to collect data across three distinct habitat types.

4. Results and Discussion: Presents the recorded species composition and diversity indices, analyzing the significant correlations between altitude and species distribution.

5. Conclusion and Recommendation: Summarizes findings on the habitat preferences of birds and emphasizes the necessity for long-term monitoring to mitigate the ecological risks of reservoir construction.

Keywords

Birds, Distribution, Diversity, Habitat, Species Richness, Sunkosh River, Bhutan, Shannon-Weiner Index, Conservation, Ornithology, Altitude, Anthropogenic Impact, Avifauna, Biodiversity, Ecosystem Monitoring

Frequently Asked Questions

What is the primary focus of this research study?

The study focuses on establishing baseline data for bird diversity, richness, and species evenness along the Sunkosh River in the Tsirang and Dagana districts of Bhutan.

What are the central themes of the research?

The key themes include the impact of habitat type (river, settlement, forest) on bird populations, the influence of altitude on biodiversity, and the potential threats from planned hydropower infrastructure.

What is the core research question addressed by the author?

The research asks what the specific species diversity, richness, and evenness levels of birds are within the three different habitats along the Sunkosh River.

Which scientific methodology was employed?

The author utilized the point count survey method, conducting observations over a fixed period and analyzing the data using the Shannon-Wiener Diversity Index and parametric statistical tests.

What does the main body of the work cover?

It covers literature on bird ecology, a detailed methodology of field data collection, an analysis of species composition and diversity across different sites, and the correlations found between environmental variables and bird populations.

Which keywords best characterize this work?

Important keywords include Birds, Distribution, Diversity, Habitat, Species Richness, Bhutan, Conservation, and Ecological Indicators.

Why were specific bird sites like "undisturbed forest" chosen for comparison?

These sites were chosen to represent a gradient of disturbance levels—from highly modified settlement areas to pristine forests—to better understand how human activity affects bird distribution.

What conclusion does the author reach regarding the planned reservoir?

The author concludes that the planned construction of a reservoir poses a significant threat to the ecosystem and bird populations, particularly for sensitive species, and recommends long-term monitoring.

How does altitude impact the findings of the study?

The study found a strong, statistically significant negative correlation between altitude and both bird species diversity and composition.