DIDSON fish data and code for analysis

DIDSON imaging sonar was used along 50-m transects to document the mobile fish community in the Rhode River, MD, USA, Indian River Lagoon, FL, USA, San Fransisco Bay, CA, USA, and Bocas del Toro, Panama. Sampling took place in soft sediment and structured habitats. Each fish >10 cm total length was measured and recorded in this dataset. Size spectra analysis was used to analyze the data and code for the analyses is included.

本数据集采用DIDSON成像声呐（DIDSON imaging sonar），沿50米样带对美国马里兰州罗德河、美国佛罗里达州印第安河泻湖、美国加利福尼亚州旧金山湾以及巴拿马博卡斯德尔托罗的活动性鱼类群落进行调查记录。采样覆盖软底质生境与结构化生境两类生境，数据集记录了所有总长度大于10厘米的鱼类的体长测量数据。本研究通过体长谱分析（size spectra analysis）对采集数据开展分析，相关分析代码已随本数据集一并提供。