Acoustic zone monitoring to quantify fine-scale movements of aquatic animals in a narrow water body
Acoustic zone monitoring to quantify fine-scale movements of aquatic animals in a narrow water body
复制标题
声学区域监测可量化狭窄水体中水生动物的精细运动
DOI：
10.1007/s10641-022-01225-9
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发表时间：
2022
影响因子：
1.4
通讯作者：
Arai Nobuaki
中科院分区：
文献类型：
--
作者：
Mitamura Hiromichi;Wada Toshihiro;Takagi Junichi;Noda Takuji;Hori Tomoya;Takasaki Kazuyoshi;Kawata Gyo;Arai Nobuaki
精细尺度空间声学遥测，包括双曲线和活动中心定位，被广泛用于深入了解水生动物的生态。然而，这些位置遥测系统需要大量接收器，即使对于狭窄的河流、小溪和运河等有限的研究区域，通常通过部署在特别感兴趣的位置或跨水体（声门）的接收器来监测标记的动物。本文提出了一种声学区域监测方法，该方法仅使用少量声学接收器来估计狭窄水体中标记鱼类使用的区域。通过进行静止和移动测试以及监测日本入侵物种斑点叉尾鮰的运动，验证了所提出方法的有效性。沿河部署了 8 个声学接收器，间隔 100-270 m，每个区域的长度为 100-190 m。所提出的方法提供了八个固定发射机（100％，估计数量：1118±419）和由船拖曳的单个发射机（99.1％，估计数量：111/112）的内部和最外部区域的准确估计。相比之下，活动中心定位估计接收器阵列中心周围的位置，而双曲线定位由于接收器阵列几乎是直线而无法提供位置。所提出的区域监测方法提供了标记鲶鱼更准确的运动估计。该方法可以使用有限数量的接收器以精细的规模覆盖更大的区域，并用于初步确定新研究地点目标物种使用的主要栖息地和分布。
Fine-scale spatial acoustic telemetry, including hyperbolic and centre-of-activity localisation, is widely used to provide insight into the ecology of aquatic animals. However, these positional telemetry systems require numerous receivers, even for limited study areas such as narrow rivers, creeks, and canals, where tagged animals are typically monitored by receivers deployed at locations of particular interest or across a water body (acoustic gate). This paper proposes an acoustic zone monitoring method, which only uses a few acoustic receivers to estimate a zone used by a tagged fish in narrow water bodies. The effectiveness of the proposed method was verified by performing stationary and moving tests and by monitoring the movements of an invasive species in Japan, the channel catfishIctalurus punctatus. Eight acoustic receivers were deployed 100–270 m apart along the river, with each zone having a length of 100–190 m. The proposed method provided accurate estimates in the inner and outermost zones of the eight stationary transmitters (100%, number of estimates: 1118 ± 419) and of a single transmitter towed by a boat (99.1%, number of estimates: 111/112). By contrast, centre-of-activity localisation estimated positions around the centre of the receiver array, and hyperbolic localisation was unable to provide positions because of an almost-straight-line array of receivers. The proposed zone monitoring method provided more accurate movement estimates of the tagged catfish. The method can cover an extended area using a limited number of receivers at a fine scale and be applied to initially identify the predominant habitats and distribution used by target species in the new study sites.