Study of Spatial Connectivity of Pacific Insular Species Leads to Doctoral Degree for EOD Scientist Donald Kobayashi

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Simulated pelagic distributions of larvae 90 days after hypothetical June 1998 spawning of an insular species at Necker Island in the Northwestern Hawaiian Islands. Distributions are shown for three larval strategies in a layered current field. Occupancy of the shallow layer or deep layer resulted in advection of larvae away from Necker in opposite directions (top and bottom panels). A mixed shallow-deep strategy, e.g., through diel vertical migration, reduced effects of horizontal transport (middle panel). Red stars denote location of the spawning at Necker Island.

Donald Kobayashi of the Ecosystems and Oceanography Division (EOD) recently earned his Ph.D. degree by completing a study of spatial connectivity in Pacific insular species. The degree was a culmination of Don's graduate studies in the Department of Environmental Sciences at the University of Technology, Sydney, Australia (UTS). Don started his Ph.D. candidacy in January 2004 under the supervision of Dr. David Booth. His dissertation consisted of his work revolving around the movement of insular marine species, with most chapters either already published or in press in peer-reviewed journals. Don submitted his final 220-page dissertation manuscript in January 2008 following a round of reviews by 3 external thesis assessors. He attended the UTS graduation and gave his final thesis seminar in October 2008. In the dissertation, Don demonstrated the utility of computer simulation modeling and animal-borne tags in advancing the understanding of movement dynamics in a marine environment. His dissertation is available on the PIFSC library Web site in PDF format:

For more information contact: Don Kobayashi