Greg Williams
National Oceanic and Atmospheric Administration
9 Papers
59 Citations
Greg Williams is an academic researcher from National Oceanic and Atmospheric Administration. The author has contributed to research in topics: Lingcod & Population. The author has an hindex of 8, co-authored 8 publications.
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Papers
Comparison of fine-scale acoustic monitoring systems using home range size of a demersal fish
Kelly S. Andrews,Nick Tolimieri,Greg Williams,Jameal F. Samhouri,Chris J. Harvey,Phillip S. Levin +5 more
TL;DR: The results from fixed acoustic transmitters and transmitters implanted in lingcod Ophiodon elongatus provided by two fine-scale passive acoustic monitoring systems were compared: the older Vemco© Radio Acoustic Positioning (VRAP) system and the newer VR2W Positioning System (VPS) with either three or four receivers.
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Seasonal and ontogenetic changes in movement patterns of sixgill sharks.
TL;DR: Monitoring the patterns of movement of 34 sixgill sharks Hexanchus griseus using two large-scale acoustic arrays inside and outside Puget Sound, Washington, USA found that sixgills altered their behavior and moved twice as fast among sites before making large movements out of the estuary.
Scale and pattern of broadnose sevengill shark Notorynchus cepedianus movement in estuarine embayments.
Greg Williams,Kelly S. Andrews,Stephen L. Katz,M. L. Moser,Nick Tolimieri,Deborah A. Farrer,Phillip S. Levin +6 more
TL;DR: The detailed movements of 32 acoustically tagged broadnose sevengill shark Notorynchus cepedianus were documented in and around north-east Pacific Ocean estuarine embayments from 2005 to 2007, contributing to a better understanding of this highly mobile apex predator in regional ecosystems.
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Strong population differentiation in lingcod (Ophiodon elongatus) is driven by a small portion of the genome.
Gary C. Longo,Laurel S. Lam,Laurel S. Lam,Bonnie L. Basnett,Jameal F. Samhouri,Scott L. Hamilton,Kelly S. Andrews,Greg Williams,Giles W. Goetz,Michelle M. McClure,Krista M. Nichols +10 more
TL;DR: Novel observations of genetic structure in lingcod are presented and designate clear evolutionary units that could be used to inform fisheries management.
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Suitability of Insulin-Like Growth Factor 1 (IGF1) as a Measure of Relative Growth Rates in Lingcod
Kelly S. Andrews,Brian R. Beckman,Anne H. Beaudreau,Donald A. Larsen,Greg Williams,Phillip S. Levin +5 more
TL;DR: This research takes the first step toward developing a relative index of body growth for lingcod Ophiodon elongatus using plasma insulin-like growth factor 1 (IGF1) with the ultimate goal of measuring spatial differences in relative growth rates.
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