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首页> 外文期刊>Journal of Experimental Marine Biology and Ecology >Structure-from-motion reveals coral growth is influenced by colony size and wave energy on the reef slope at Ningaloo Reef, Western Australia
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Structure-from-motion reveals coral growth is influenced by colony size and wave energy on the reef slope at Ningaloo Reef, Western Australia

机译：结构从 - 动作揭示了珊瑚增长受到珊瑚礁珊瑚礁的殖民地大小和波能量的影响，西澳大利亚

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摘要

A variety of techniques for measuring coral growth, a fundamental biological trait, have been used to improve our understanding of coral demographics. Remaining gaps and biases in this information, in combination with technological advances, led to the present study. We assessed the capacity of structure-from-motion (SfM) technology to build image mosaics (orthophotos) of similar to 6 x 8 m reef plots from which individual coral colonies could be identified in repeated annual surveys and colony planar area measured. We monitored Acropora, Pocilloporidae (specifically from the genera Stylophora and Seriatopora) and Platygyra colonies over 2 years. We compared growth measurements, as change in radius, from SfM orthophotos to the more traditional method of tagging and photographing individual coral colonies. We conclude that planar coral growth can be measured from SfM orthophotos, with clear advantages over tagging including large sample sizes, and speed and ease of surveying, albeit with some bias in the SfM method (growth estimates were 15% greater (similar to 0.5 cm/year) from standard photos than from the SfM orthophotos). We documented mortality and growth rates in a high wave energy environment on the reef slope at Ningaloo Reef, Western Australia, where there were no existing coral growth or mortality estimates. The mean change in radial extension of Acropora colonies with no mortality was 2.92 +/- 0.06 (SE, n = 572) cm year(-1) across the pooled data set of standard and orthophotos, substantially lower than previous estimates on similar species from the region. The growth rate of Pocilloporidae was 3.54 +/- 0.52 (SE, n = 12) cm year(-1) for colonies with no mortality. Robust planar growth estimates were not obtained for Platygyra due to its morphology, but we report high survivorship of the colonies: 94% with no mortality as compared with 79% for Acropora and only 53% for Pocilloporidae. High sample sizes from the novel SfM methodology allowed us to demonstrate that Acropora growth rate was inversely linked to wave energy and coral size.
机译：用于测量珊瑚生长，基本生物特征的各种技术已被用来改善我们对珊瑚人口统计数据的理解。在这些信息中剩余差距和偏见，与技术进步相结合，导致了本研究。我们评估了结构 - 从运动（SFM）技术构建图像马赛克（正轨）的容量，其类似于6×8米的珊瑚礁图，可以在重复的年度调查和殖民地平面区域中识别各个珊瑚菌落。我们监测了acropora，吡吡普（Pocilloporidae）（特别是来自Genera Studtophora和Seriatopora）和Platygyra菌落超过2年。我们将增长测量与半径变化的变化进行比较，从SFM矫正镜头到更传统的标记和拍摄单个珊瑚菌落的方法。我们得出结论，平面珊瑚生长可以从SFM orthophotos测量，并且在标记上具有明显的优点，包括大样本尺寸，以及测量的速度和易于测量，尽管SFM方法中的一些偏差（增长估计为15％（类似于0.5厘米） /年）来自标准照片而不是SFM Orthophotos）。我们记录了在澳大利亚宁大厦礁石礁坡上的高波能源环境中的死亡率和增长率，在那里没有现有的珊瑚增长或死亡率估计。在汇总数据集的标准和正原芯片的额外额外菌落的径向延伸的平均变化为2.92 +/- 0.06（SE，n = 572）cm（-1），基本上低于上一个类似物种的估计该区域。菌落的山吡唑的生长速率为3.54 +/- 0.52（SE，N = 12）cm年（-1）菌落，用于没有死亡率。由于其形态，Platygyra没有获得强大的平面增长估计，但我们报告了对菌落的高生存率：94％，没有死亡率，而Acropora的79％，吡吡洛达仅为53％。新型SFM方法的高样本尺寸使我们证明Acropora生长速率与波能量和珊瑚尺寸相反。

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  • 来源
    《Journal of Experimental Marine Biology and Ecology》 |2020年第sepaaoc期|151438.1-151438.10|共10页
  • 作者

    Cresswell Anna K.; Orr Melanie; Renton Michael; Haywood Michael D. E.; Ospina Ana Giraldo; Slawinski Dirk; Austin Rachel; Thomson Damian P.;

  • 作者单位

    Commonwealth Sci & Ind Res Org CSIRO Oceans & Atmosphere 64 Fairway Level 4 Crawley WA 6009 Australia|Univ Western Australia Sch Biol Sci 35 Stirling Hwy Crawley WA 6009 Australia|Univ Western Australia UWA Oceans Inst 35 Stirling Hwy Crawley WA 6009 Australia|Australian Inst Marine Sci 64 Fairway Level 3 Crawley WA 6009 Australia;

    Commonwealth Sci & Ind Res Org CSIRO Oceans & Atmosphere 64 Fairway Level 4 Crawley WA 6009 Australia;

    Univ Western Australia Sch Biol Sci 35 Stirling Hwy Crawley WA 6009 Australia|Western Australia Sch Agr & Environm Univ 35 Stirling Hwy Crawley WA 6009 Australia;

    Commonwealth Sci & Ind Res Org CSIRO Oceans & Atmosphere 306 Carmody Rd St Lucia Qld 4067 Australia;

    Univ Western Australia Sch Biol Sci 35 Stirling Hwy Crawley WA 6009 Australia|Univ Western Australia UWA Oceans Inst 35 Stirling Hwy Crawley WA 6009 Australia;

    Commonwealth Sci & Ind Res Org CSIRO Oceans & Atmosphere 64 Fairway Level 4 Crawley WA 6009 Australia;

    Univ Western Australia Sch Biol Sci 35 Stirling Hwy Crawley WA 6009 Australia;

    Commonwealth Sci & Ind Res Org CSIRO Oceans & Atmosphere 64 Fairway Level 4 Crawley WA 6009 Australia;

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  • 正文语种 eng
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  • 关键词

    3D reconstruction; Acropora; Coral reef; Methodology; Photogrammetry; Pocilloporidae;

    机译：3D重建;acropora;珊瑚礁;方法论;摄影测量;吡吡普;

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