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High temporal resolution sampling reveals reef fish settlement is highly clustered

Piercy, Julius JB and Smith, David J and Jompa, Jamaluddin and Simpson, Stephen D and Codling, Edward A (2018) 'High temporal resolution sampling reveals reef fish settlement is highly clustered.' Canadian Journal of Fisheries and Aquatic Sciences, 75 (4). 560 - 568. ISSN 0706-652X

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Abstract

Coral reef fish larvae settle on reefs predominantly at night around the new-moon phase, after an early developmental period spent in the pelagic environment. Most sampling is conducted across whole nights, and any studies that have examined the frequency of arrival within nights have typically been limited to coarse sampling time scales of 1–5 h. Here, we present results for arrival numbers of fish caught between dusk and midnight from light traps sampled every 15 min at an Indonesian coral reef, providing the finest temporal resolution for this type of study to date. A spatial analysis by distance indices analysis, adapted to temporal data, revealed clustering of reef arrival times for many species, with an increase in catches immediately after dusk dropping off towards midnight. Importantly, the timing of clusters differed among species, indicating that different factors determine the timing of arrival among taxa. Our results support the hypothesis that larval behaviour influences the timing of arrival at a coral reef for different fish species.

Item Type: Article
Subjects: G Geography. Anthropology. Recreation > GC Oceanography
G Geography. Anthropology. Recreation > GE Environmental Sciences
Divisions: Faculty of Science and Health > Life Sciences, School of
Faculty of Science and Health > Mathematical Sciences, Department of
Depositing User: Elements
Date Deposited: 09 Apr 2018 09:35
Last Modified: 16 Oct 2019 04:15
URI: http://repository.essex.ac.uk/id/eprint/21793

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