• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Experimental Marine Biology and Ecology >Acoustic investigation of the primary production of an Australian temperate macroalgal (Ecklonia radiata) system
【24h】

Acoustic investigation of the primary production of an Australian temperate macroalgal (Ecklonia radiata) system

机译：对澳大利亚温带大型藻类（Ecklonia radiata）系统初级生产的声学研究

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Temperate marine systems are dominated by rocky reef macroalgal habitats, and there is now evidence that some seaweed communities are retreating in a manner consistent with climate change. Obtaining measurements of primary production across entire assemblages of algae over ecologically meaningful spatial scales is difficult, and acoustic techniques emerge as a method to consider. Acoustics has the potential to detect oxygen in gaseous form, hence it can measure primary production that is unseen by methods that use dissolved oxygen to estimate productivity. With levels of dissolved oxygen in kelp environments regularly reaching supersaturation, it is possible - even likely - that ecologically significant proportions of production have been neglected by traditional methods. To investigate the potential use of underwater acoustics in monitoring productivity of macroalgal habitats an experiment was run over two weeks during the Austral summer in February 2012 in Canoe Bay, Tasmania. This paper details the results of ray-based acoustic predictive models for two periods during the experiment chosen to compare contrasting diurnal productivity periods, together with inverted acoustic propagation waveguide features from the empirical experiment itself for these periods. Results of the Bellhop modelling suggest that acoustic transmissions can detect ecologically significant proportions of oxygen in gaseous form in seaweed environments (> 5% of total predicted production). However, changes in diurnal cycles of oxygen production were not seen in the empirical acoustic data during the experimental period, indicating that it is unlikely that there was a significant level of oxygen in gaseous form in the canopy layer. This work details the first research into the use of acoustics to measure productivity in macroalgal systems. It is possible that further research, particularly in highly productive environments or when conditions are more favourable, may prove acoustics to be a useful tool for assisting in monitoring primary productivity in seaweed communities.
机译：温带海洋系统以礁石大型藻类栖息地为主导，现在有证据表明一些海藻群落正在以与气候变化相一致的方式退缩。在生态上有意义的空间尺度上获得整个藻类集合的初级生产的测量值是困难的，声学技术应运而生。声学具有检测气态氧气的潜力，因此它可以测量初级生产，而使用溶解氧来估算生产率的方法则看不到初级生产。随着海带环境中的溶解氧水平定期达到过饱和状态，传统方法有可能（甚至有可能）在生态上占很大比例的生产被忽视。为了研究水下声学在监测大型藻类生境生产力方面的潜在用途，在塔斯马尼亚州独木舟湾的澳大利亚夏季（2012年2月）进行了为期两周的实验。本文详细介绍了在选择用于比较昼夜对比生产期的实验过程中，两个时期基于射线的声学预测模型的结果，以及来自经验实验本身在这两个时期的倒置声传播波导特征。 Bellhop模型的结果表明，声波传输可以检测到海藻环境中气态形式的氧气中具有生态学意义的比例（大于总预测产量的5％）。然而，在实验期间，在经验声学数据中没有看到氧气产生的昼夜循环的变化，这表明在冠层中不太可能以气态形式存在大量的氧气。这项工作详细介绍了首次使用声学来测量大型藻类系统中的生产率的研究。进一步的研究（尤其是在高产环境或条件更为有利的情况下）可能会证明声学是帮助监测海藻群落初级生产力的有用工具。

著录项

  • 来源
    《Journal of Experimental Marine Biology and Ecology》 |2020年第3期|151309.1-151309.11|共11页
  • 作者

  • 作者单位

    Univ Tasmania UTAS IMAS Battery Point 7005 Australia|ULB Labs Image Signal Proc & Acoust LISA Environm Hydroacoust Lab B-1050 Brussels Belgium|Charles Darwin Univ Res Inst Environm & Livelihoods Ellongowan Dr Casuarina NT 0810 Australia;

    Univ Tasmania UTAS IMAS Battery Point 7005 Australia;

    ULB Labs Image Signal Proc & Acoust LISA Environm Hydroacoust Lab B-1050 Brussels Belgium;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Acoustic modelling; Acoustics; Macroalgae; Primary productivity; Seaweed; Microbubbles;

    机译：声学建模;声学;大型藻类;初级生产力;海藻;微泡;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号