AASERT Supplement to Vibrational Sensing in Marine Invertebrates
WASHINGTON UNIV SEATTLE SCHOOL OF OCEANOGRAPHY
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LONG-TERM GOALS. My long-term goal is to understand important interactions among organisms, particles including sediments, solutes and moving fluids. The reason for this goal is to be able to solve interesting forward and inverse problems dealing with marine biota. OBJECTIVES. My current objectives under this supplement are to investigate the phenomenon of emergence from the benthos. APPROACH. The supplement is enabling Ms. Kelly Kringel to work with Van Holliday s TAPS-4 Tracor Acoustic Profiler data collected during the ORCAS experiment. This device used four frequencies and range gating to generate vertical profiles of backscatter in 2-min, 0.5-m bins. The AASERT grant enabled her to revisit the ORCAS site in summer of 1997 to test hypotheses about the identities of animals constituting the emergence phenomenon documented by TAPS-4 at ORCAS but seen almost everywhere in the littoral that data allow a look e.g. Jumars et al. 1996. This phenomenon is better known from tropical reef habitats and fresh water, but only because of higher-intensity sampling and observation there. TAPS-4 operated at multiple frequencies, but the frequency that showed the phenomenon most clearly in our case was 265 kHz.
- Biological Oceanography