Comparison between ROV video and Agassiz trawl methods for sampling deep water fauna of submarine canyons in the Northwestern Mediterranean Sea with observations on behavioural reactions of target species

Ayma, A.; Aguzzi, Jacopo; Canals, Miquel; Lastras, Galderic; Bahamón, Nixon; Mechó, Ariadna

doi:10.1016/j.dsr.2016.05.013

Cited by 44 publications

(34 citation statements)

References 77 publications

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“…Overall, to achieve this better resolution in our understanding, more canyons need to be studied, studies need to be long term (time-series), and studies need to be better coordinated. There is a need for more baseline surveys, using standardized methodologies and the most appropriate sampling schemes (Ayma et al, 2016). Also in general, better integration is needed across the different disciplines of submarine canyon studies, combining insights from sediment dynamics, oceanography and biogeochemistry with biological knowledge, to achieve a more holistic understanding of submarine canyon systems (e.g., Amaro et al, 2016).…”

Section: Knowledge Gaps and Future Directions For Understanding Canyomentioning

confidence: 99%

Ecological Role of Submarine Canyons and Need for Canyon Conservation: A Review

et al. 2017

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Submarine canyons are major geomorphic features of continental margins around the world. Several recent multidisciplinary projects focused on the study of canyons have considerably increased our understanding of their ecological role, the goods, and services they provide to human populations, and the impacts that human activities have on their overall ecological condition. Pressures from human activities include fishing, dumping of land-based mine tailings, and oil and gas extraction. Moreover, hydrodynamic processes of canyons enhance the down-canyon transport of litter. The effects of climate change may modify the intensity of currents. This potential hydrographic change is predicted to impact the structure and functioning of canyon communities as well as affect nutrient supply to the deep-ocean ecosystem. This review not only identifies the ecological status of canyons, and current and future issues for canyon conservation, but also highlights the need for a better understanding of anthropogenic impacts on canyon ecosystems and proposes other research required to inform management measures to protect canyon ecosystems.

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Section: Knowledge Gaps and Future Directions For Understanding Canyomentioning

confidence: 99%

Ecological Role of Submarine Canyons and Need for Canyon Conservation: A Review

et al. 2017

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“…ROVs are considered a good method for studying deep‐sea fish communities, as they do not typically affect demersal fish behavior or abundances (Ayma et al. ).…”

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confidence: 99%

“…The ROV was equipped with environmental sensors, including dissolved oxygen, allowing all fish observations to be paired with corresponding environmental data. ROVs are considered a good method for studying deep-sea fish communities, as they do not typically affect demersal fish behavior or abundances (Ayma et al 2016).The Gulf of California has a thick oxygen minimum zone (OMZ) in the central and southern Gulf, with severely hypoxic conditions extending from~100 m to over 1,300 m deep, and suboxic conditions (O 2 <5 lmol/ kg) present for over 500 m of the water column (Hendrickx and Serrano 2014). Despite the extensive hypoxic conditions, we observed high densities of demersal fishes (3.26 fish/m 2 ) living where oxygen conditions were 1.61 lmol/kg (pO 2 = 0.12 kPa) ( Fig.…”

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confidence: 99%

Home sweet suboxic home: remarkable hypoxia tolerance in two demersal fish species in the Gulf of California

Gallo

Levin

Beckwith

et al. 2018

Ecology

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“…Some authors report that behaviour influences the composition of deep‐sea faunal assemblages and species relative abundances, subsequently affecting the biodiversity indexes calculated using different methodologies (Ayma et al, ). Consequently, as different devices differ in attractiveness for species because of the differing behaviours of the species, a proper analysis of the fauna assemblage would require the combined use of different devices in order to obtain better estimates of the diversity and abundance of the fauna associated with coral habitat.…”

Section: Discussionmentioning

confidence: 99%

Revealing the coral habitat effect on benthopelagic fauna diversity in the Santa Maria di Leuca cold‐water coral province using different devices and Bayesian hierarchical modelling

Capezzuto

Calculli

Carlucci

et al. 2019

Aquatic Conservation

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Data from two experimental longline surveys and two video inspections carried out in Santa Maria di Leuca cold‐water coral province (Mediterranean Sea) during spring–autumn 2010 were used in order to compare the benthopelagic abundance and diversity between coral and non‐coral habitats and between different devices. The sampling was carried out in two types of habitat: a coral habitat with carbonate mounds and a non‐coral habitat characterized by intermound sea floor. A Bayesian hierarchical modelling approach to accommodate factors influencing community assemblages was used considering the number of species, the Shannon–Wiener diversity index and the two most abundant species represented by the European conger (Conger conger) and blackbelly rosefish (Helicolenus dactylopterus). A relevant effect of the habitat factor was observed for both the number of species and the diversity index, showing a higher species number and diversity index in the coral habitat than in the non‐coral habitat. Concerning the relevance of fixed effects from the model on the probability of observing non‐zero (positive) abundances, the devices considered, longline and baited lander, did not show different influence for either C. conger or H. dactylopterus. In the case of positive abundance, a relevant device effect was only observed for H. dactylopterus, showing higher abundances for longline than for baited lander. A habitat effect was detected, with positive abundances for both species in the coral habitat. This study proves that structurally complex habitats generated by cold‐water corals influence the distribution and diversity of the benthopelagic fauna, and that the use of different devices can provide complementary useful results. Increased knowledge about the role of cold‐water corals in the associated benthopelagic fauna could lead to better conservation of one of the most important hot spots of biodiversity in the Mediterranean Sea.

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Comparison between ROV video and Agassiz trawl methods for sampling deep water fauna of submarine canyons in the Northwestern Mediterranean Sea with observations on behavioural reactions of target species

Cited by 44 publications

References 77 publications

Ecological Role of Submarine Canyons and Need for Canyon Conservation: A Review

Ecological Role of Submarine Canyons and Need for Canyon Conservation: A Review

Home sweet suboxic home: remarkable hypoxia tolerance in two demersal fish species in the Gulf of California

Revealing the coral habitat effect on benthopelagic fauna diversity in the Santa Maria di Leuca cold‐water coral province using different devices and Bayesian hierarchical modelling

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