A workshop was convened in Honolulu, Hawaii, in December 2008 with the dual goals of defining the state of the science and outlining an operational strategy relating to at-sea detection of DFG (McElwee and Morishige, 2010). Using a multi-disciplinary approach, the workshop engaged a diversity of marine debris experts and mitigation practitioners, particularly those with observational experience of DFG types and characteristics; physical oceanographers who describe and model oceanic features that transport DFG and determine likely areas of DFG concentration, retention, and dispersion; and technical and engineering remote-sensing scientists with expertise in sensor usage, signal processing, operational considerations for gathering remotely sensed data, and the platforms on which sensors are mounted. A list of workshop participants and their affiliations is provided in Appendix A, and the workshop agenda is provided in Appendix B.
The proceedings of the 2008 workshop were published as a NOAA Technical Memorandum (McElwee and Morishige, 2010). Here, we provide the first refereed presentation of that information, detailing the methods and supporting material used to derive the strategy, as well as the relevance of the results as evidenced by their relationship and role to both extant and envisioned marine debris mitigation research and policy. We also expand the strategies reported by McElwee and Morishige (2010) and identify critical knowledge gaps and potential actions to address them. Knowledge gaps and potential actions were developed in part through the synthesis of background papers prepared by the 2008 workshop participants and through workshop outputs in which participants identified data gaps and actions to remedy these gaps and advance our abilities to detect at-sea DFG.
The types of DFG targeted by the strategy presented herein are those considered to pose the greatest threat to ecosystems of the Hawaiian Islands—derelict fishing nets and fishing net conglomerations (Donohue et al., 2001). This threat is due to their size, abundance, and entangling properties; in addition, they are neutral or positively buoyant and frequently extend from depth to within the upper 5 m of the water column.
A workshop was convened in Honolulu, Hawaii, in December 2008 with the dual goals of defining the state of the science and outlining an operational strategy relating to at-sea detection of DFG (McElwee and Morishige, 2010). Using a multi-disciplinary approach, the workshop engaged a diversity of marine debris experts and mitigation practitioners, particularly those with observational experience of DFG types and characteristics; physical oceanographers who describe and model oceanic features that transport DFG and determine likely areas of DFG concentration, retention, and dispersion; and technical and engineering remote-sensing scientists with expertise in sensor usage, signal processing, operational considerations for gathering remotely sensed data, and the platforms on which sensors are mounted. A list of workshop participants and their affiliations is provided in Appendix A, and the workshop agenda is provided in Appendix B.
The proceedings of the 2008 workshop were published as a NOAA Technical Memorandum (McElwee and Morishige, 2010). Here, we provide the first refereed presentation of that information, detailing the methods and supporting material used to derive the strategy, as well as the relevance of the results as evidenced by their relationship and role to both extant and envisioned marine debris mitigation research and policy. We also expand the strategies reported by McElwee and Morishige (2010) and identify critical knowledge gaps and potential actions to address them. Knowledge gaps and potential actions were developed in part through the synthesis of background papers prepared by the 2008 workshop participants and through workshop outputs in which participants identified data gaps and actions to remedy these gaps and advance our abilities to detect at-sea DFG.
The types of DFG targeted by the strategy presented herein are those considered to pose the greatest threat to ecosystems of the Hawaiian Islands—derelict fishing nets and fishing net conglomerations (Donohue et al., 2001). This threat is due to their size, abundance, and entangling properties; in addition, they are neutral or positively buoyant and frequently extend from depth to within the upper 5 m of the water column.
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