Hydroacoustic basis for detection and characterization of eelgrass (Zostera marina)
- Army Engineer Waterways Experiment Station, Vicksburg, MS (United States)
- Naval Undersea Warfare Center, Newport, RI (United States)
- EPA, Narragansett, RI (United States)
Understanding the distribution and density of seagrasses is important for a variety of environmental applications. Physical techniques for detection and characterization are labor and cost intensive and provide little insight into spatial distribution. optical-based techniques are limited by water clarity - frequently resulting in systematic underestimation of the extent of seagrasses. Active hydroacoustic techniques have shown the ability to detect seagrasses but the phenomenology behind detection is poorly understood. Laboratory and in-situ hydroacoustic measurements are presented for eelgrass (Zostera marina), a common seagrass in the United States. Based on these data, hydroacoustic approaches for wide area detection and mapping are discussed and several are demonstrated within areas of established eelgrass beds in Narragansett Bay, Rhode Island.
- OSTI ID:
- 478177
- Report Number(s):
- CONF-970319--
- Country of Publication:
- United States
- Language:
- English
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