Temporal and spatial benthic data collection via an internet operated Deep Sea Crawler

Purser, Autun; Thomsen, Laurenz; Barnes, Chris; Best, Mairi; Chapman, Ross; Hofbauer, Michael; Menzel, M. R.; Wagner, Hannes

doi:10.1016/j.mio.2013.07.001

Cited by 56 publications

(51 citation statements)

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“…Crawler driving control and data acquisition were carried out in real-time via a custom web interface, with sensor data and imagery automatically stored to the NEPTUNE archive at the sampling resolution of each device [35]. …”

Section: Methodsmentioning

confidence: 99%

“…A new generation of tethered mobile Internet Operated Vehicles (IOV), such as benthic crawlers, extends the potential observational footprint from a few square meters around fixed seafloor platforms [33, 34], to hundreds of square meters [35] in areas surrounding seafloor observatory nodes. This substantially extends our ability to document spatial habitat heterogeneity, and provides a larger sample size for detecting temporal variability.…”

Section: Introductionmentioning

confidence: 99%

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Seasonal monitoring of deep-sea megabenthos in Barkley Canyon cold seep by internet operated vehicle (IOV)

et al. 2017

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Knowledge of the processes shaping deep-sea benthic communities at seasonal scales in cold-seep environments is incomplete. Cold seeps within highly dynamic regions, such as submarine canyons, where variable current regimes may occur, are particularly understudied. Novel Internet Operated Vehicles (IOVs), such as tracked crawlers, provide new techniques for investigating these ecosystems over prolonged periods. In this study a benthic crawler connected to the NEPTUNE cabled infrastructure operated by Ocean Networks Canada was used to monitor community changes across 60 m2 of a cold-seep area of the Barkley Canyon, North East Pacific, at ~890 m depth within an Oxygen Minimum Zone (OMZ). Short video-transects were run at 4-h intervals during the first week of successive calendar months, over a 14 month period (February 14th 2013 to April 14th 2014). Within each recorded transect video megafauna abundances were computed and changes in environmental conditions concurrently measured. The responses of fauna to environmental conditions as a proxy of seasonality were assessed through analysis of abundances in a total of 438 video-transects (over 92 h of total footage). 7698 fauna individuals from 6 phyla (Cnidaria, Ctenophora, Arthropoda, Echinodermata, Mollusca, and Chordata) were logged and patterns in abundances of the 7 most abundant taxa (i.e. rockfish Sebastidae, sablefish Anoplopoma fimbria, hagfish Eptatretus stoutii, buccinids (Buccinoidea), undefined small crabs, ctenophores Bolinopsis infundibulum, and Scyphomedusa Poralia rufescens) were identified. Patterns in the reproductive behaviour of the grooved tanner crab (Chionnecetes tanneri) were also indicated. Temporal variations in biodiversity and abundance in megabenthic fauna was significantly influenced by variabilities in flow velocity flow direction (up or down canyon), dissolved oxygen concentration and month of study. Also reported here for the first time are transient mass aggregations of grooved tanner crabs through these depths of the canyon system, in early spring and likely linked to the crab’s reproductive cycle.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Seasonal monitoring of deep-sea megabenthos in Barkley Canyon cold seep by internet operated vehicle (IOV)

et al. 2017

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“…This is recorded in real time by remotely operated vehicles, crawlers, sensors, and seabed cameras (Thomsen et al 2012;Barnes et al 2013;Purser et al 2013 ups (possibly marking stratigraphic disconformities). Further, since the methane hydrate and associated carbonate deposits are related to deep-sea temperature-pressure relationships, variations of carbonate distribution in the stratigraphy can be influenced by major eustatic and climate changes (Xu et al 2001).…”

Section: Discussionmentioning

confidence: 99%

Neogene strontium isotope stratigraphy, foraminifer biostratigraphy, and lithostratigraphy from offshore wells, Queen Charlotte Basin, British Columbia, Canada

et al. 2015

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Strontium isotope ages of foraminifers from Early Miocene to Late Pliocene (Neogene) sequences (21.2-3.4 Ma) are reported for the first time from the Queen Charlotte Basin (QCB) in Queen Charlotte Sound, offshore British Columbia. These ages, together with a revised foraminifer biostratigraphy and log data from two offshore wells, provide a high-resolution chronostratigraphy for the southern part of the QCB. The data show thick 1717-2636 m Miocene sequences overlain by much thinner Pliocene and younger units (<240 m). Assessments of foraminifer biofacies indicate common transported neritic and shelf faunas into slope or bathyal environments where changes in basin water depths indicate significant deformation and erosion. Résumé : Des datations isotopiques (strontium) de foraminifères dans des successions (21,2 à 3,4 Ma) du Miocène précoce auPliocène tardif (Néogène) sont rapportées pour la première fois du bassin de la Reine-Charlotte dans le détroit de la ReineCharlotte, au large de la Colombie Britannique. Ces âges, joints à une biostratigraphie des foraminifères révisée et des données de diagraphies de deux puits au large, fournissent une chronostratigraphie à haute définition pour la partie sud du bassin de la Reine-Charlotte.

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“…Much of the design was driven by the requirement of a modular design of the main components, and payload as well as full autonomy for a 12-month deployment. The basic crawler design was developed within the Crawler Design Team of the HGFAlliance ROBEX [5], and is based on the crawler Wally [6]. A common design of the main crawler frame and caterpillar propulsion was identified where modular systems for docking and scientific payloads can be added depending on the different scientific question [7].…”

Section: Benthic Crawler Trampermentioning

confidence: 99%

Tramper

Wenzhöfer

Lemburg

Hofbauer

et al. 2016

OCEANS 2016 MTS/IEEE Monterey

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-TRAMPER is an autonomous benthic crawler equipped with oxygen sensors to perform long-term flux time series measurements at abyssal depth. The crawler is developed within the HGF-Alliance ROBEX. TRAMPER has five main subsystems: the titanium frame with the flotation, the caterpillar drive system, recovery and communication systems, energy and electronics and a multi-optode profiler as the scientific payload. A lithium-ion battery pack provides the energy to run an oxygen profiling system performing consecutive measurements (>52 cycles) along its transecting moving on the seafloor. This new generation of optode-based oxygen monitoring system allows using 18 oxygen optodes and is able to perform in situ calibrations. A video-guided launching system is used to deploy the crawler at the seafloor. At the seafloor the pre-programmed mission scenario is performed consisting of consecutive sleeping, moving and measurement cycles. The aim is to cover a seasonal cycle of settling organic matter on the seafloor and to resolve the impact on the benthic community respiration activity.

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Temporal and spatial benthic data collection via an internet operated Deep Sea Crawler

Cited by 56 publications

References 50 publications

Seasonal monitoring of deep-sea megabenthos in Barkley Canyon cold seep by internet operated vehicle (IOV)

Seasonal monitoring of deep-sea megabenthos in Barkley Canyon cold seep by internet operated vehicle (IOV)

Neogene strontium isotope stratigraphy, foraminifer biostratigraphy, and lithostratigraphy from offshore wells, Queen Charlotte Basin, British Columbia, Canada

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