Index Catalog // ScholarsArchive@OSU

Creator:: Shroyer, E. L., Benoit-Bird, Kelly J., Nash, J. D., and Moum, J. N.
Abstract:: We use density and microstructure data to characterize the properties and physical setting of optical thin layers observed over the New Jersey shelf in the summer of 2006. Layers were differentiated into two types by their vertical position in the water column, fluorescence intensity, and possibly community composition or cell...
Resource Type:: Article

Creator:: Benoit-Bird, Kelly J., McIntosh, Neal E., and Heppell, Scott A.
Abstract:: We sought to characterize the distribution of juvenile walleye pollock Theragra chalcogramma in an area of intense predator-prey interactions and to describe habitat features that lead to their observed distributions. The distribution of juvenile walleye pollock around the Pribilof Islands in the southeastern Bering Sea in 2008 and 2009 was...
Resource Type:: Article

Creator:: Benoit-Bird, Kelly J. and Gilly, William F.
Abstract:: We used split-beam acoustic techniques to observe free-swimming of jumbo squid Dosidicus gigas during 4 cruises in the Gulf of California. Four-dimensional spatio-temporal data revealed that at night in shallow water, jumbo squid were using ascending, spiral-like swimming paths to emerge from extremely dense aggregations, and were likely foraging on...
Resource Type:: Article

Creator:: Benoit-Bird, Kelly J., Kuletz, Kathy, Heppell, Scott, Jones, Nathan, and Hoover, Brian
Abstract:: During the 2008 and 2009 breeding seasons of murres Uria spp., we combined visual observations of these predators with active acoustics (sonar), fish trawls, zooplankton net tows, and hydrographic measurements in the area surrounding breeding colonies in the southeastern Bering Sea. We acoustically detected thousands of bubble trails that were...
Resource Type:: Article

Creator:: Cade, David E. and Benoit-Bird, Kelly J.
Abstract:: Acoustic scattering layers are ubiquitous, horizontally extensive aggregations of both vertebrate and invertebrate organisms that play key roles in oceanic ecosystems. However, currently there are no conventions or widely adaptable automatic methods for identifying these often dynamic, spatially complex features, so it is difficult to consistently and efficiently describe and...
Resource Type:: Article

Creator:: Benoit-Bird, Kelly J. and McManus, Margaret A.
Abstract:: To measure organismal coherence in a pelagic ecosystem, we used moored sensors to describe the vertical dynamics of each step in the food chain in shelf waters off the west shore of Oahu, Hawaii. Horizontally extensive, intense aggregations of phytoplankton, zooplankton, and micronekton exhibited strong diel patterns in abundance and...
Resource Type:: Article

Creator:: Paredes, Rosana, Orben, Rachael A., Suryan, Robert M., Irons, David B., Roby, Daniel D., Harding, Ann M. A., Young, Rebecca C., Benoit-Bird, Kelly J., Ladd, Carol, Renner, Heather, Heppell, Scott, Phillips, Richard A., and Kitaysky, Alexander
Abstract:: We hypothesized that changes in southeastern Bering Sea foraging conditions for black-legged kittiwakes (Rissa tridactyla) have caused shifts in habitat use with direct implications for population trends. To test this, we compared at-sea distribution, breeding performance, and nutritional stress of kittiwakes in three years (2008–2010) at two sites in the...
Resource Type:: Article

Creator:: Cade, David E. and Benoit-Bird, Kelly J.
Abstract:: Matlab code is included for detecting and tracking acoustic scattering layers from processed Echoview data. Acoustic scattering layers are ubiquitous, horizontally extensive aggregations of both vertebrate and invertebrate organisms that play key roles in oceanic ecosystems. However, currently there are no conventions or widely adaptable automatic methods for identifying these...
Resource Type:: Software or Program Code

Creator:: Benoit-Bird, Kelly J., Shroyer, Emily L., and McManus, Margaret A.
Abstract:: We examined the characteristics of biological patches at four different locations to assess the relationship of patch vertical scale, amplitude, and persistence. In contrast to patches of larger animals, we found that the majority of coherent aggregations of plankton at each site were vertically compressed, with most smaller than 5m...
Resource Type:: Article

Creator:: Benoit-Bird, Kelly J., Battaile, Brian C., Nordstrom, Chad A., and Trites, Andrew W.
Abstract:: Marine prey often occur in hierarchical mosaics whereby small, high-density patches are nested inside of larger, lower density aggregations. We tested the extent to which the foraging behavior of a marine predator (northern fur seal Callorhinus ursinus) could be explained by the hierarchical patch structure of a dominant prey species...
Resource Type:: Article

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