
bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown
Published: Nov. 3, 2024
Abstract Sea turtles of the genus Lepidochelys take part in synchronised nesting events, known as arribadas , where a large number females emerge simultaneously from sea to nest on beach. Despite some evidence for role environmental factors, there is considerable uncertainty about both factors that influence mass-nesting at an annual scale well onset individual events. We used multi-decadal dataset two olive ridley mass beaches Odisha, India, identify associated with inter-annual variation, seasonality and arribadas. Interestingly, sites showed different patterns non-occurrence arribadas, despite being only 250 km apart. The season was consistently during dry cooler year. Arribada start dates were non-uniformly distributed across lunar phase Gahirmatha most occurring first third quarters. Fast Southern Winds characterised period before arribada sites. Machine learning models (XGBoost) identified important parameters accurately predicted more than 75% dates. Lunar phase, mean level pressure wind speed direction Differences parameter importance between suggest influenced by interaction several parameters, along site-specific characteristics. Insights into triggers can thus provide guidance management efforts.
Language: Английский