Use of manned submersible and autonomous stereo-camera array to assess forage fish and associated subtidal habitat

Baker, Matthew R.; Williams, Kresimir; Greene, H. Gary; Greufe, Casey; Lopes, Heather; Aschoff, John; Towler, Rick

doi:10.1016/j.fishres.2021.106067

Cited by 18 publications

(5 citation statements)

References 77 publications

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“…We also recognize that Ammodytes spp. have been observed at deeper depths (Baker et al, 2021), though rarely in the case of A. dubius (Staudinger et al, 2020), and thus, our habitat definitions may not encompass all possible spawning locations for A. dubius throughout the study area. In the Great South Channel, we avoided seeding particles in regions shallower than 15 m to minimize the inclusion of nearshore A. americanus habitat, which were not the focus of this study (Nizinski et al, 1990).…”

Section: Methodsmentioning

confidence: 99%

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Larval transport pathways from three prominent sand lance habitats in the Gulf of Maine

Suca

Baumann

et al. 2022

Fisheries Oceanography

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Northern sand lance (Ammodytes dubius) are among the most critically important forage fish throughout the Northeast US shelf. Despite their ecological importance, little is known about the larval transport of this species. Here, we use otolith microstructure analysis to estimate hatch and settlement dates of sand lance and then use these measurements to parametrize particle tracking experiments to assess the source–sink dynamics of three prominent sand lance habitats in the Gulf of Maine: Stellwagen Bank, the Great South Channel, and Georges Bank. Our results indicate the pelagic larval duration of northern sand lance lasts about 2 months (range: 50–84 days) and exhibit a broad range of hatch and settlement dates. Forward and backward particle tracking experiments show substantial interannual variability, yet suggest transport generally follows the north to south circulation in the Gulf of Maine region. We find that Stellwagen Bank is a major source of larvae for the Great South Channel, while the Great South Channel primarily serves as a sink for larvae from Stellwagen Bank and Georges Bank. Retention is likely the primary source of larvae on Georges Bank. Retention within both Georges Bank and Stellwagen Bank varies interannually in response to changes in local wind events, while the Great South Channel only exhibited notable retention in a single year. Collectively, these results provide a framework to assess population connectivity among these sand lance habitats, which informs the species' recruitment dynamics and impacts its vulnerability to exploitation.

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Section: Methodsmentioning

confidence: 99%

Section: Bio-physical Individual-based Modelmentioning

confidence: 99%

Larval transport pathways from three prominent sand lance habitats in the Gulf of Maine

Suca

Baumann

et al. 2022

Fisheries Oceanography

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“…These parameters have the same relationship with the bedform height and length in the upper flow regime. Thus, these parameters have an exponential form in Equation (5).…”

Section: (4) Hydraulic Radiusmentioning

confidence: 99%

“…The growth of dunes and larger bar forms leads to significant population displacement and loss of infrastructure and agricultural land [2,3], which increases bed resistance to flows and reduces the sediment transport capacity of the flow. Migration of bedforms may be detrimental to navigation [4], fisheries [5], and submerged structures [6]. Thus, it is important to study the prediction of bedform dimensions in science and engineering.…”

Section: Introductionmentioning

confidence: 99%

Prediction of Bedform Dimensions on Alluvial Bed in Unidirectional Flow

Wang,

2024

Water

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In this study, the bedform dimensions of an alluvial bed in a unidirectional flow were experimentally investigated. A series of flume experiments was conducted; 700 sets of flume and field data were used in developing formulae for predicting the bedform dimensions on alluvial beds in unidirectional flow. Bedform dimensions include the length and height of bedforms generated by the lower and upper flow regimes; the resistance coefficient for the flow in different flow regimes is introduced into the proposed formulae. The momentum boundary-layer thickness was introduced as an independent variable instead of the flow depth. Based on a large amount of flume and field data, the coefficients of each parameter were determined; four typical formulae were used to compare the accuracy of the proposed formulae. The experimental results show that the momentum boundary-layer thickness, hydraulic radius, and resistance coefficient for the flow in different regimes correlate well with the bedform dimensions. The calculation results show that the dimensionless particle size should not be ignored in the calculation of bedform dimensions. The bedform dimensions have an obvious trend of rapid increase with an increase in the ratio of flow depth to sand size (H/d). The bedform dimensions obtained using the van Rijn method and the Engelund and Hansen method did not represent the variation trend of the bedform length in the upper flow regime with an increase in H/d when H/d was greater than 103. The calculations using the proposed formulae are more accurate and reasonable than those in previous studies predicting the bedform height and length on an alluvial bed in a unidirectional flow.

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“…Submersibles have long been utilized for biological surveys in depths beyond that accessible by SCUBA (Fricke & Meischner 1985;Lorance et al 2000;Lindsay & Hunt 2005;Baker et al 2021). Typically, these submersibles have been owned by nation states and operated by national or academic research institutions (e.g., Grassle et al 1975;Hissmann & Schauer 2017).…”

Section: Introductionmentioning

confidence: 99%

Personal submersibles offer novel ecological research access to Antarctic waters: an example, with observations of the rarely encountered scyphozoan Stygiomedusa gigantea

Moore¹,

Flink²,

Prendergast³

et al. 2023

Polar Research

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Underwater biological surveys have been conducted around the Antarctic continent for several decades, and our knowledge of the species present in the shallow waters (<50 m) is reasonably comprehensive. However, the waters below 50 m remain underexplored on the account of difficulty of access, financial barriers and relatively few operational platforms capable of deployment to such depths. Here, we demonstrate that personal submersibles, now increasingly deployed by the expedition cruise industry, can be vessels of opportunity for biological research in the polar regions. We describe direct observations of the rarely encountered scyphozoan Stygiomedusa gigantea at water depths of 80–280 m in Antarctic Peninsula coastal waters as an example of the potential that personal submersibles present for the scientific community, and we outline possible research avenues for utilizing these platforms in the future.

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Use of manned submersible and autonomous stereo-camera array to assess forage fish and associated subtidal habitat

Cited by 18 publications

References 77 publications

Larval transport pathways from three prominent sand lance habitats in the Gulf of Maine

Larval transport pathways from three prominent sand lance habitats in the Gulf of Maine

Prediction of Bedform Dimensions on Alluvial Bed in Unidirectional Flow

Personal submersibles offer novel ecological research access to Antarctic waters: an example, with observations of the rarely encountered scyphozoan Stygiomedusa gigantea

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