Remote sensing of Antarctic polychaete reefs (Serpula narconensis): reproducible workflows for quantifying benthic structural complexity with action cameras, remotely operated vehicles and structure-from-motion photogrammetry,Remote Sensing in Ecology and Conservation

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Remote sensing of Antarctic polychaete reefs (Serpula narconensis): reproducible workflows for quantifying benthic structural complexity with action cameras, remotely operated vehicles and structure-from-motion photogrammetry
Remote Sensing in Ecology and Conservation ( IF 3.9 ) Pub Date : 2023-07-25 , DOI: 10.1002/rse2.358
Juan C. Montes‐Herrera ₁ , Nicole Hill ₁ , Vonda J. Cummings ₂ , Glenn J. Johnstone ₃ , Jonathan S. Stark _{3,

4} , Vanessa Lucieer ₁

Affiliation

Quantifying the structural complexity provided by biogenic habitat structures is important in ecology, conservation and management, and yet remains a challenging task, particularly in deep sea and polar environments, that current photogrammetry tools can alleviate. In this study, we demonstrate how small remotely operated vehicles and compact underwater GoPro® action cameras can be easily integrated into coastal Antarctic surveys to quantify structural complexity of under-ice benthos via underwater photogrammetry. Forty-four pairs of 1 m² quadrats at 1 cm resolution, each comprising an orthomosaic and three-dimensional reconstructions, were analyzed to describe relationships between benthic cover and structural complexity metrics. The study case provided insights into a unique biogenic habitat, highlighting the role of integrating structural complexity metrics in Antarctic benthic surveys. Although no clear relationships between structural complexity and biodiversity were found, high cover of live reef-building polychaetes was associated with higher levels of structural complexity, particularly fractal dimension (D). Further, broken biogenic structures, product of disturbance events retain habitat structural complexity known to be associated with larvae settlement and biogenic reef growth. This suggests that D can be used as a metric for detecting subtle changes in biogenic structural complexity. We build from available open-source code, a reproducible scientific workflow that is expected to facilitate the acquisition and analysis of structural complexity metrics. The workflow presented aims to encourage and accelerate the use of photogrammetry tools for benthic studies aiming to quantify biogenic structural complexity across depths and latitudes.

中文翻译：

南极多毛类珊瑚礁（Serpula narconensis）的遥感：使用运动相机、遥控车辆和运动结构摄影测量来量化底栖结构复杂性的可重复工作流程

量化生物栖息地结构提供的结构复杂性对于生态学、保护和管理很重要，但仍然是一项具有挑战性的任务，特别是在深海和极地环境中，当前的摄影测量工具可以缓解这一挑战。在这项研究中，我们展示了如何将小型遥控车辆和紧凑型水下 GoPro® 运动相机轻松集成到南极沿海调查中，以通过水下摄影测量来量化冰下海底生物的结构复杂性。分析了44 对 1 m ²分辨率为 1 cm 的样方，每个样方均包含正射镶嵌和三维重建，以描述海底覆盖和结构复杂性指标之间的关系。该研究案例提供了对独特生物栖息地的见解，强调了在南极海底调查中整合结构复杂性指标的作用。尽管没有发现结构复杂性和生物多样性之间的明确关系，但活体造礁多毛类动物的高覆盖度与较高水平的结构复杂性相关，特别是分形维数（D）。此外，破坏的生物结构、干扰事件的产物保留了已知与幼虫定居和生物礁生长相关的栖息地结构的复杂性。这表明D可以用作检测生物结构复杂性细微变化的指标。我们利用可用的开源代码构建了一个可重复的科学工作流程，预计将有助于结构复杂性指标的获取和分析。提出的工作流程旨在鼓励和加速使用摄影测量工具进行海底研究，旨在量化跨深度和纬度的生物结构复杂性。

更新日期：2023-07-25

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