Effect of Food Supply on Foraging Patterns and Body Weights of Long-Toed Stints(Calidris Subminuta)
| Autor: | Somchai Nimnuan, Kasem Chunkao, George A. Gale, Tommaso Savini, Philip D. Round |
|---|---|
| Rok vydání: | 2013 |
| Předmět: | |
| Zdroj: | Waterbirds. 36:397-408 |
| ISSN: | 1938-5390 1524-4695 |
| Popis: | Multiple species of shorebirds are now globally threatened, particularly across tropical Asia, yet we know relatively little of the detailed habitat usage and resource characteristics of sites in the region. The objective of this study was to determine how seasonal variation in food density affected foraging patterns and body weights of Long-toed Stint (Calidris subminuta), a relatively common winter visitor. Research was conducted during the passage and overwintering seasons in wastewater treatment ponds and salt-pans on the Inner Gulf of Thailand. Predictions were that during periods of higher food density, shorebirds should be relatively more abundant and heavier, and have increased foraging attempts, reduced step rates and reduced chase rates. Furthermore, adults were expected to have higher weights than juveniles. Overall, shorebird abundance was significantly positively correlated with invertebrate abundance during the 2-year study period. Long-toed Stints had greater body mass following th... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|