Tests of an experimental unbaited video lander as a marine fish survey tool for high-relief deepwater rocky reefs

Hannah, Robert W.; Blume, Matthew T. O.

doi:10.1016/j.jembe.2012.06.021

Cited by 24 publications

(35 citation statements)

References 13 publications

(22 reference statements)

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“…It would have been diffi cult to obtain similar data during several consecutive days with the same scuba diver. Moreover, the static and discrete video system has been outlined as an appropriate tool for the study of fi sh behaviour, due to its low disturbance compared to divers, whose presence can induce changes of fi sh behaviour (Chapman et al 1974, Hannah and Blume 2012, Mallet et al 2014.…”

Section: Discussionmentioning

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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Section: Discussionmentioning

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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“…The video lander we used is an autonomous underwater video system designed and built for use in high-relief rocky habitat by the Oregon Department of Fish and Wildlife's Marine Resources Program (Hannah and Blume 2012). The video lander is composed of an aluminum tube frame, a Deep Sea Power and Light (DSPL) Multi-SeaCam 2060, dual DSPL LED Ritelites (850 lm, 3,000 K), and an aluminum pressure housing containing two 13.2V rechargeable NiMH battery packs, a controller board, a Sony TRV-11 digital camcorder (recording video received from the DSPL Multi-SeaCam 2060) recording onto 60-min Mini DVC cassette tapes, and either a depth activated pressure switch used in waters deeper 88 EASTON ET AL. than 18 m or a push activated switch for shallower depths (Figure 1).…”

Section: Methodsmentioning

confidence: 99%

“…The video lander was deployed for a fixed duration during daylight hours at each sampling location, following the protocols in Hannah and Blume (2012). Each video sample consisted of 5 min of recorded bottom time, beginning at QUANTIFICATION OF HABITAT AND COMMUNITY RELATIONSHIPS 89 the estimated time of the lander reaching the seafloor and ending when retrieval began.…”

Section: Methodsmentioning

confidence: 99%

“…The degree of difference in the species composition was then measured using the Bray-Curtis dissimilarity index (BCDI) in the SIMPER routine (Bray and Curtis 1957;Hammer et al 2001;Hannah and Blume 2012). Every drop, including those with no observations, was included in both analyses.…”

Section: Methodsmentioning

confidence: 99%

“…The relative abundance of each species observed among sections of the study site was compared using a nonparametric Wilcoxon test, as has been previously used with video lander data (Hannah and Blume 2012). Additionally, the species assemblage at Three Arch Rocks reef was compared with the species assemblages of five exploratory sites surveyed by a video lander and presented in Hannah and Blume (2012). This assemblage comparison was again performed using pairwise one-way ANOSIMs, adjusted for multiple comparisons using a step-down sequential Bonferroni correction in Paleontological Statistics 2.15.…”

Section: Methodsmentioning

confidence: 99%

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Quantification of Habitat and Community Relationships among Nearshore Temperate Fishes Through Analysis of Drop Camera Video

2015

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Temperate nearshore reefs along the Pacific coast of North America are highly valuable to commercial and recreational fisheries yet comprise a small fraction of the seabed. Monitoring fisheries resources in this region is difficult; high‐relief structural complexity and adverse sea conditions have led to a paucity of information on temperate reef species assemblage patterns. Reliable, inexpensive tools and methods for monitoring are needed, as many traditional tools are both logistically complicated and expensive, limiting the frequency of their implementation over a large scale. Video drop cameras of varying designs have previously been employed to estimate fish abundance and distribution. We surveyed a nearshore rocky reef off the northern Oregon coast with a video lander (a video camera mounted on a landing platform so it can be dropped to the seafloor) over the spring and winter of 2011. We designed a 272‐point systematic grid to document the species assemblage and the distribution and habitat associations of the reef species, including two overfished rockfishes: Canary Rockfish Sebastes pinniger and Yelloweye Rockfish Sebastes ruberrimus. Species assemblages differed significantly across the reef by depth and by season for the outer part of the reef. Well‐defined habitat associations existed for many species; Canary Rockfish were associated with complex moderate‐relief habitat types such as large boulders and small boulders, while Yelloweye Rockfish were associated with high‐relief habitats like vertical walls. Species associations were evaluated pairwise to identify nearshore complexes. We compared our site with five exploratory reef sites off the central Oregon coast and found that nearshore reefs differed from our site, while offshore reefs were more similar. Video landers provide a solution to the need for increased sampling of temperate reef systems that are subject to difficult conditions and can contribute to habitat mapping, fish abundance indices, and fish assemblage information for monitoring and management of fisheries resources. Received October 18, 2014; accepted January 3, 2015

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Marine Renewable Energy and Environmental Interactions: Baseline Assessments of Seabirds, Marine Mammals, Sea Turtles and Benthic Communities on the Oregon Shelf

Henkel

Suryan

Lagerquist

2014

Marine Renewable Energy Technology and Environmental Interactions

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Tests of an experimental unbaited video lander as a marine fish survey tool for high-relief deepwater rocky reefs

Cited by 24 publications

References 13 publications

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

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

Quantification of Habitat and Community Relationships among Nearshore Temperate Fishes Through Analysis of Drop Camera Video

Marine Renewable Energy and Environmental Interactions: Baseline Assessments of Seabirds, Marine Mammals, Sea Turtles and Benthic Communities on the Oregon Shelf

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