RELATIVE INFLUENCE OF TURBULENCE AND WAVES ON LARVAL BEHAVIOR
National Science Foundation
FUCHS, HEIDI L
RUTGERS THE ST UNIV OF NJ NEW BRUNSWICK
Intellectual Merit: The proposed research addresses the following fundamental aspects of larval behavior and the ecological impacts of turbulence and waves:
1) Novel approaches to gain insights on behavioral signaling. Two-phase infrared particle-image velocimetry techniques will be applied in multiple flow tanks to study effects of both turbulence and waves at the scale of larvae. Statistical protocols will be developed for converting behavior observations into empirical models, laying the groundwork for careful integration of more complex behaviors with physical circulation models. Results will identify the key fluid characteristics affecting behavior in species from intertidal and shelf habitats.
2) Impact of waves on behavior. Many habitats are influenced or even dominated by waves, yet no study to date has explored the potential for waves to provide a larval behavioral signal. This study will be the first to explore larval response to the large accelerations present only in waves.
3) Role of behavior in dispersal. Benthic recruitment variability arises partly from vagaries of dispersal that result from larval responses to the physical environment. Turbulence and waves vary spatially and also temporally due to stratification, water depth, tides, and winds. Small-scale symptoms of turbulence and waves could elicit larval behaviors that contribute to differences in dispersal trajectories. This study will describe larval responses to hydromechanical cues that ultimately could explain uncertainty in dispersal and recruitment.
4) Adaptation to physical environments. Shears and acceleration are potential behavior signals that could be enhanced or dampened by human impacts such as boating, shoreline modification, or storms. If behaviors are tuned to specific flow regimes, larvae may have difficulty adapting to changing marine environments. This work will be instrumental in assessing potential ecological impacts of changing physical processes on larval behavior and dispersal.
Broader Impacts: The proposed study integrates ecology, ocean physics, and state-of-the-art technology to promote interdisciplinary research, teaching, and infrastructure. Co-PI Gerbi is a postdoctoral associate, and his career will benefit from mentoring and experience on a highly interdisciplinary project. One graduate student will do dissertation research while gaining expertise in marine ecology, fluid mechanics, and flow-measurement technology. Two undergraduates will be recruited to participate through the NSF RIOS program and the Rutgers Aresty program for minority students, and the Rutgers student will do a senior thesis on part of this project. Results of this research will be incorporated into a new course in biological-physical interactions for graduate and undergraduate students. The project offers several opportunities to improve and expand the Larval Zoo, a web archive that provides movies of swimming larvae to a wide audience. The PIV and flow tanks will complete a new Plankton-Fluid Interactions Laboratory, leveraging a substantial contribution from Rutgers. The PIV is an invaluable upgrade to the flow-measurement capabilities of the Rutgers seawater flume facility.
City: NEW BRUNSWICK
Country: UNITED STATES
Award Notice Date: 21-Mar-2011
Project Start Date: 01-Apr-2011
Budget Start Date:
Project End Date: 31-Mar-2015
Budget End Date:
|Year||FY Total Cost|
National Science Foundation
It is important to recognize, and consider in any interpretation of Federal RePORTER data, that the publication and patent information cannot be associated with any particular year of a research project. The lag between research being conducted and the availability of its results in a publication or patent award varies substantially. For that reason, it's difficult, if not impossible, to associate a publication or patent with any specific year of the project. Likewise, it is not possible to associate a publication or patent with any particular supplement to a research project or a particular subproject of a multi-project grant.ABOUT FEDERAL REPORTER RESULTS
Loading Similar Projects, please wait...