An assessment of fish and marine growth associated with an oil and gas platform jacket using an augmented remotely operated vehicle

McLean, Dianne L.; Taylor, Michael D.; Ospina, Ana Giraldo; Partridge, Julian C.

doi:10.1016/j.csr.2019.04.006

Cited by 38 publications

(52 citation statements)

References 64 publications

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“…Consequently, good communication regarding additional scientific requirements is required long before any actual modified ROV reaches its final deployment destination. Nevertheless, the scope for augmentation is considerable and such factors can be accommodated via close liaison with offshore operators (e.g., McLean et al, 2019).…”

Section: Augmenting Industrial Rovs For Sciencementioning

confidence: 99%

“…Although the acquisition of HD imagery is relatively straightforward, storage of HD data and its handling can add a significant indirect overhead and cost (see section "Data Management"). Additional video and digital still cameras can be mounted onto workclass ROVs for the specific purpose of collecting HD imagery that facilitates scientific research (McLean et al, 2019; Figures 2, 3G,H and Table 1). For example, McLean et al (2019) recently added a compact stereo-video system onto a workclass ROV to collect HD imagery and enable accurate measurement of organisms' size.…”

Section: Todd Et Al 2016mentioning

confidence: 99%

“…Additional video and digital still cameras can be mounted onto workclass ROVs for the specific purpose of collecting HD imagery that facilitates scientific research (McLean et al, 2019; Figures 2, 3G,H and Table 1). For example, McLean et al (2019) recently added a compact stereo-video system onto a workclass ROV to collect HD imagery and enable accurate measurement of organisms' size. An ability to accurately measure size is particularly useful for assessing biomass, life-history stages of organisms and their ontogenetic shifts in habitat usage (Elliott et al, 2017), as well as the potential value of recreationally or commercially important fish species associated with offshore structures (Bond et al, 2018b,c).…”

Section: Todd Et Al 2016mentioning

confidence: 99%

“…A scientifically dedicated methodical survey of infrastructureassociated marine life can yield quantitative data which is more accurate and useful for informing development proposals, impact assessments and, at end of field life, decommissioning comparative assessments (CAs) or Net Environmental Benefit Analysis assessments (NEBAs) (Nicolette et al, 2013;Sommer et al, 2019). Such programs can be completed with efficiency (e.g., McLean et al, 2019), adding little cost to field campaigns. There are a variety of different ways that dedicated surveys of marine communities associated with infrastructure can occur, with the chosen technique largely dictated by ROV operational logistics.…”

Section: Scientific Surveys Of Infrastructure and Surrounding Environmentioning

confidence: 99%

“…For example, McLean et al 2019augmented an industry ROV with stereovideo cameras ( Figure 3G) and instructed ROV operators in the collection of imagery from vertical transects of a platform jacket, with surveys conducted independent of scientists at the site of operations. Four surface-to-seabed and return transects took a total of 1.25 h to complete (∼15 min per vertical transect) within a scheduled 2-week ROV field campaign and produced quantitative information on fish diversity, abundance, size structure, and marine growth extent and complexity (McLean et al, 2019).…”

Section: Rov Video Surveysmentioning

confidence: 99%

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Section: Augmenting Industrial Rovs For Sciencementioning

confidence: 99%

Section: Todd Et Al 2016mentioning

confidence: 99%

Section: Todd Et Al 2016mentioning

confidence: 99%

Section: Scientific Surveys Of Infrastructure and Surrounding Environmentioning

confidence: 99%

Section: Rov Video Surveysmentioning

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Offshore platforms as novel ecosystems: A case study from Australia’s Northwest Shelf

Elden

Meeuwig

Hobbs

2022

Ecology and Evolution

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The decommissioning of offshore oil and gas platforms typically involves removing some or all of the associated infrastructure and the consequent destruction of the associated marine ecosystem that has developed over decades. There is increasing evidence of the important ecological role played by offshore platforms. Concepts such as novel ecosystems allow stakeholders to consider the ecological role played by each platform in the decommissioning process. This study focused on the Wandoo field in Northwest Australia as a case study for the application of the novel ecosystem concept to the decommissioning of offshore platforms. Stereo‐baited remote underwater video systems were used to assess the habitat composition and fish communities at Wandoo, as well as two control sites: a sandy one that resembled the Wandoo site pre‐installation, and one characterized by a natural reef as a control for natural hard substrate and vertical relief. We found denser macrobenthos habitat at the Wandoo site than at either of the control sites, which we attributed to the exclusion of seabed trawling around the Wandoo infrastructure. We also found that the demersal and pelagic taxonomic assemblages at Wandoo more closely resemble those at a natural reef than those which would likely have been present pre‐installation, but these assemblages are still unique in a regional context. The demersal assemblage is characterized by reef‐associated species with higher diversity than those at the sand control and natural reef control sites, with the pelagic community characterized by species associated with oil platforms in other regions. These findings suggest that a novel ecosystem has emerged in the Wandoo field. It is likely that many of the novel qualities of this ecosystem would be lost under decommissioning scenarios that involve partial or complete removal. This study provides an example for classifying offshore platforms as novel ecosystems.

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Characterizing the three‐dimensional distribution of schooling reef fish with a portable multibeam echosounder

Holland

Becker

Smith

et al. 2021

Limnology & Ocean Methods

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Multispecies schools of small planktivorous fishes are important constituents of reefs and coastal infrastructure; however, determining the extent and distribution of these schools is challenging. Here, we describe a novel use of a low-cost portable multibeam echosounder from a small vessel, which can concurrently measure detailed bathymetry and the distribution of mid-water targets with high spatial accuracy, regardless of light availability or water clarity. Fish abundance and biomass are not easily quantified by multibeam echosounders, so we developed a new metric for delineating the gridded horizontal distribution of school thickness, and assessed the metric's efficacy by examining its correlation with mean volume backscattering strength derived from a calibrated 38 kHz split-beam echosounder (R = 0.67). We measured the distribution of fish school thickness around clusters of large concrete modules of an artificial reef using a multibeam echosounder, complemented with underwater video to aid species identification. The mean distribution of school thickness was mapped around the reef field with generalized additive mixed models. Model spatial predictions indicated schools aggregated around module clusters, rather than individual modules. Dynamic schools of fish in relatively shallow coastal waters ( 30 m) can be surveyed over 400,000 m 2 at 3 m s −1 in just 60 min. Portable multibeam echosounders are an accessible and valuable addition to quantifying the dynamic distributions of coastal fishes around features with high vertical relief.

show abstract

An assessment of fish and marine growth associated with an oil and gas platform jacket using an augmented remotely operated vehicle

Cited by 38 publications

References 64 publications

Enhancing the Scientific Value of Industry Remotely Operated Vehicles (ROVs) in Our Oceans

Enhancing the Scientific Value of Industry Remotely Operated Vehicles (ROVs) in Our Oceans

Offshore platforms as novel ecosystems: A case study from Australia’s Northwest Shelf

Characterizing the three‐dimensional distribution of schooling reef fish with a portable multibeam echosounder

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