VideoSolo, an autonomous video system for high-frequency monitoring of aquatic biota, applied to coral reef fishes in the Glorioso Islands (SWIO)

Chabanet, Pascale; Loiseau, Nicolas; Join, Jean-Lambert; Ponton, Dominique

doi:10.1016/j.jembe.2012.06.024

Cited by 17 publications

(15 citation statements)

References 56 publications

(60 reference statements)

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“…These patterns contrast with previous studies from both temperate and tropical environments (Rooker & Dennis 1991;Spyker & Van Den Berghe 1995;Thompson & Mapstone 2002;Willis et al 2006), which found no difference in fish assemblages within days. However, they are consistent with Birt et al (2012) and Chabanet et al (2012), who reported an effect of time of day upon fish assemblages. However, patterns observed by Birt et al (2012) differ to ours as they found that morning and mid-day assemblages were different from afternoon assemblages.…”

Section: Discussionsupporting

confidence: 91%

“…Thompson and Mapstone (2002) found that within-day variation in abundance was highest for the Lutjanidae, Serranidae and Siganidae. Chabanet et al (2012) found that Acanthuridae were more abundant in the morning, whereas Scaridae abundance was higher at sunrise and sunset. Such results provide new insights on fish territories, home range and site fidelity, movement and activity patterns, habitat connectivity and species interactions.…”

Section: Introductionmentioning

confidence: 93%

“…Very little information exists on within-day temporal variations in fish assemblage while some authors have clearly shown that the abundance of certain species significantly varied according to the time of day (Thompson & Mapstone 2002;McClanahan et al 2007;Birt et al 2012;Chabanet et al 2012) or tidal state (Abou-Seedo et al 1990;Unsworth et al 2007;Castellanos-Galindo & Krumme 2015). For instance, Birt et al (2012) detected significant differences in the fish assemblage within and among days.…”

Section: Introductionmentioning

confidence: 99%

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Diurnal temporal patterns of the diversity and the abundance of reef fishes in a branching coral patch in New Caledonia

et al. 2016

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Small-scale spatial and temporal variability in animal abundance is an intrinsic characteristic of marine ecosystems but remains largely unknown for most animals, including coral reef fishes. In this study, we used a remote autonomous unbaited video system and recorded reef fish assemblages during daylight hours, 10 times a day for 34 consecutive days in a branching coral patch of the lagoon of New Caledonia. In total, 50 031 fish observations belonging to 114 taxa, 66 genera and 31 families were recorded in 256 recorded videos. Carnivores and herbivore-detritus feeders dominated the trophic structure. We found significant variations in the composition of fish assemblages between times of day. Taxa richness and fish abundance were greater in the early morning and in the late afternoon than during the day. Fourteen taxa displayed well-defined temporal patterns in abundance with one taxon influenced by time of day, six influenced by tidal state and seven influenced by both time of day and tidal state. None of these 14 taxa were piscivores, 10 were herbivore-detritus feeders, three were carnivores and one was plankton feeder. Our results suggest a diel migration from feeding grounds to shelter areas and highlight the importance of taking into account small-scale temporal variability in animal diversity and abundance when studying connectivity between habitats and monitoring communities.

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Section: Discussionsupporting

confidence: 91%

Section: Introductionmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

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Diurnal temporal patterns of the diversity and the abundance of reef fishes in a branching coral patch in New Caledonia

et al. 2016

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“…This study will focus on diurnal rhythms of fi sh species. Until now, diurnal rhythms have been studied in relation to abundances of fi sh species (Willis et al 2006, Chabanet et al 2012, but rhythms of different size classes within the same species have rarely been taken in account (Gries et al 1997). Nevertheless, the study of their respective activity rhythms is important for their management and better understanding of their roles in the ecosystem (Koeller et al 1986, Martha andJones 2002).…”

Section: Introductionmentioning

confidence: 99%

Temporal partitioning of diurnal behavioural patterns of Coris julis and Diplodus vulgaris (Actinopterygii: Perciformes) in Mediterranean coralligenous habitats

Witkowski¹,

Vion²,

Bouchoucha³

2016

Acta Ichthyol. Piscat.

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Background. There is need for more information on behavioural rhythms of fi shes in relation to their habitat use in few or not previously monitored areas, such as coralligenous habitats. Some studies have compiled inventories of observable fi sh species in this habitat, but no studies have been performed on the temporal patterning of fi sh behaviour, especially at the scale of the day. The presently reported study aims at providing knowledge on fi nescale fl uctuations of abundances and behaviour of two fi sh species in coralligenous habitats throughout the diurnal period. Materials and methods. Fish fauna was fi lmed hourly, for several days, from dusk to dawn, with autonomous, programmable, and rotating video systems. Diurnal variations in abundances per count, considering size classes and behaviour, were studied for two diurnal fi sh species-the Mediterranean rainbow wrasse, Coris julis (Linnaeus, 1758) (Labridae), and the common two-banded seabream, Diplodus vulgaris (Geoffroy Saint-Hilaire, 1817) (Sparidae) in two study areas of coralligenous habitats on the French Riviera.Results. Signifi cant temporal variability at the scale of the hour was revealed for abundances of C. julis in one of the two study areas, with few individuals in crepuscular periods and highest abundances in the morning and in the afternoon. These differences were mainly due to signifi cant diurnal variations in abundances of small and medium C. julis, which were low in crepuscular periods, whereas large-sized individuals were equally abundant during the day. On the other hand, no discernible diurnal rhythmicity of mean abundances of D. vulgaris was observed, regardless of the study area. Crepuscular periods were associated with sudden changes of abundances and behaviour for both species, with a greater percentage of mobile and solitary individuals, and few feeding individuals compared to the rest of the day. Feeding occurred mainly in the morning for C. julis. In contrast, no dial-time preference for feeding was revealed for D. vulgaris. Conclusions. The study provided preliminary insights into fi ne-scale diurnal variations of abundances of different life stages and of fi sh behaviour. Variability in abundances of life stages and of fi sh behaviours at different times of day should be taken into account for population assessments and spatial comparisons. Moreover, our study confi rmed the use of video-imaging as an effi cient non-destructive tool for the study of fi sh fauna in structurally complex, highly valuable habitats.

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“…This variability creates predictable oscillations in community structure that are driven by a number of physical and biological factors (Ballantyne et al, 2011). Shifts in the composition of fish assemblages can occur over fine temporal scales in response to altered environmental conditions that affect feeding patterns, predator-prey interactions and other behavioural processes (Chabanet et al, 2012). Natural disturbances in environmental conditions resulting from events such as storms, cyclones, coral bleaching, predator outbreaks and mass mortalities of keystone species can induce stochastic shifts in fish assemblages (Adjeroud et al, 2002).…”

Section: Introductionmentioning

confidence: 99%

Storm-induced changes in environmental conditions are correlated with shifts in temperate reef fish abundance and diversity

Munks

Harvey

Saunders

2015

Journal of Experimental Marine Biology and Ecology

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VideoSolo, an autonomous video system for high-frequency monitoring of aquatic biota, applied to coral reef fishes in the Glorioso Islands (SWIO)

Cited by 17 publications

References 56 publications

Diurnal temporal patterns of the diversity and the abundance of reef fishes in a branching coral patch in New Caledonia

Diurnal temporal patterns of the diversity and the abundance of reef fishes in a branching coral patch in New Caledonia

Temporal partitioning of diurnal behavioural patterns of Coris julis and Diplodus vulgaris (Actinopterygii: Perciformes) in Mediterranean coralligenous habitats

Storm-induced changes in environmental conditions are correlated with shifts in temperate reef fish abundance and diversity

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