Interspecific Competition and Vertical Niche Partitioning in Fiji’s Forest Birds
Abstract
:1. Introduction
2. Materials and Methods
2.1. Study Sites
2.2. Foraging Behaviour Data Collection
2.3. Statistics and Data Analysis
3. Results
3.1. Foraging Location and Species Differences
3.2. Comparisons within Foraging Guilds
3.3. Myzomela Foraging in Areas with and without Other Honeyeater Species
4. Discussion
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Species | Colo-i-Suva (100 m.a.s.l.) | Koroyanitu (500–1000 m.a.s.l.) | Leleuvia (0 m.a.s.l.) |
---|---|---|---|
Nectarivore | |||
Orange-breasted Myzomela (Myzomela jugularis) | 26 | 22 | 40 |
Kikau Honeyeater (Foulehaio procerior) | 9 | 85 | |
Giant Honeyeater (Gymnomyza brunneirostris) | 2 | 11 | |
Insectivore | |||
Slaty Monarch (Mayrornis lesson) | 4 | 17 | |
Vanikoro Broadbill (Myiagra vanikorensis) | 10 | 26 | |
Omnivore | |||
Fiji White-eye (Zosterops explorator) | 15 | 74 | |
Silvereye (Zosterops lateralis) | 0 | 60 |
Substrate | Nectarivore | Insectivore | Omnivore | |||||
---|---|---|---|---|---|---|---|---|
Myzomela Island | Myzomela Mainland | Kikau | Giant | Slaty | Vanikoro | White-Eye | Silver-Eye | |
Ground | 0 | 0 | 0 | 0 | 0 | 14% | 0 | 0 |
Bark | 53% | 25% | 24% | 44% | 57% | 32% | 39% | 38% |
Leaves | 2.5% | 21% | 20% | 6% | 39% | 27% | 45% | 56% |
Flower | 38% | 54% | 49% | 50% | 4% | 16% | 17% | 7% |
Air | 8% | 0 | 8% | 0 | 0 | 11% | 0 | 0 |
Technique | Nectarivore | Insectivore | Omnivore | |||||
---|---|---|---|---|---|---|---|---|
Myzomela Island | Myzomela Mainland | Kikau | Giant | Slaty | Vanikoro | White-Eye | Silver-Eye | |
Glean | 55% | 40% | 30% | 17% | 93% | 31% | 81% | 90% |
Bite | 15% | 13% | 0 | 6% | 3% | 18% | 8% | 2% |
Probe | 20% | 44% | 55% | 78% | 4% | 15% | 11% | 8% |
Chip off + Pry | 0 | 0 | 5% | 0 | 0 | 3% | 0 | 0 |
Sally + Hoverglean | 10% | 4% | 10% | 0 | 0 | 33% | 0 | 0 |
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Naikatini, A.N.; Keppel, G.; Brodie, G.; Kleindorfer, S. Interspecific Competition and Vertical Niche Partitioning in Fiji’s Forest Birds. Diversity 2022, 14, 223. https://doi.org/10.3390/d14030223
Naikatini AN, Keppel G, Brodie G, Kleindorfer S. Interspecific Competition and Vertical Niche Partitioning in Fiji’s Forest Birds. Diversity. 2022; 14(3):223. https://doi.org/10.3390/d14030223
Chicago/Turabian StyleNaikatini, Alivereti N., Gunnar Keppel, Gilianne Brodie, and Sonia Kleindorfer. 2022. "Interspecific Competition and Vertical Niche Partitioning in Fiji’s Forest Birds" Diversity 14, no. 3: 223. https://doi.org/10.3390/d14030223