@article {53333, title = {Heard but not seen: Occurrence of Kogia spp. along the western North Atlantic shelf break}, journal = {Marine Mammal Science}, volume = {34}, year = {2018}, month = {Jan-10-2018}, pages = {1141 - 1153}, doi = {10.1111/mms.v34.410.1111/mms.12498}, url = {http://doi.wiley.com/10.1111/mms.v34.4}, author = {Hodge, Lynne E. W. and Baumann-Pickering, Simone and Bell, Joel T. and Cummings, Erin W. and Foley, Heather J. and McAlarney, Ryan J. and McLellan, William A. and Pabst, D. Ann and Swaim, Zachary T. and Waples, Danielle M. and Read, Andrew J.} } @article {53315, title = {Relationship between cetacean presence, their prey, and oceanographic conditions at an offshore pelagic environment}, journal = {The Journal of the Acoustical Society of America}, volume = {144}, year = {2018}, month = {Jan-09-2018}, pages = {1921 - 1921}, abstract = {

Large mobile predators take advantage of offshore pelagic environments that tend to be surveyed at a low temporal scale. We present results from a one-year observation of passive and active acoustics, as well as oceanographic measures, taken at a moored location 150 nmi offshore southern California in 4000 m deep pelagic waters. The passive acoustic data shows presence of delphinids and baleen, sperm, and beaked whales throughout the recording period with species-specific seasonal occurrence. Variability in small pelagics, krill, and diel vertical migrators is evident from the active acoustic data. Multiple upwelling events and associated changes in dissolved oxygen at 500 m water depth, as well as in surface waters, were also recorded over the year. We will present results on the relationships among oceanographic variability, presence of pelagic species, and top predator presence. This study will provide valuable information on ecosystem processes in meso- and epipelagic waters on a relatively small spatial scale but very fine temporal scale.

}, issn = {0001-4966}, doi = {10.1121/1.5068413}, url = {http://asa.scitation.org/doi/10.1121/1.5068413}, author = {Baumann-Pickering, Simone and Trickey, Jennifer S. and Rice, Ally and {\v S}irovi{\'c}, Ana and Renfree, Josiah and Demer, David A.} } @article {53307, title = {The use of context in machine learning for bioacoustics}, journal = {The Journal of the Acoustical Society of America}, volume = {144}, year = {2018}, month = {Jan-09-2018}, pages = {1728 - 1728}, abstract = {

Biological acoustic signals are often produced in context. Contextual information includes things such as timing between calls, conspecific or interspecies cues, and physical environmental cues such as sunrise or sunset. We show how some forms of contextual information can be used to improve the results of detection and classification tasks for biological acoustic signals. We examine how context can be used to improve labeled data, resulting in more-accurate classification results, as well as how learners can exploit context directly. We demonstrate these improvements via two bioacoustic detection/classification tasks. The first algorithm detects odontocete echolocation clicks. We used a decision support system that allowed analysts to label echolocation clicks using between call timing cues as well as other measurements and found that deep learners trained with these high quality data are able to detect clicks in adverse environments. The second algorithm applies contextual information surrounding North Atlantic right whale upcalls to improve precision and recall. [This work was supported by ONR Grant Nos. N00014-17-1-2867 and N00014-15-1-2299.]

}, issn = {0001-4966}, doi = {10.1121/1.5067665}, url = {http://asa.scitation.org/doi/10.1121/1.5067665}, author = {Roch, Marie A. and Baumann-Pickering, Simone and Cholewiak, Danielle and Fleishman, Erica and Frasier, Kaitlin E. and Glotin, Herv{\'e} and Helble, Tyler A. and John A. Hildebrand and Klinck, Holger and Lindeneau, Scott and Liu, Xiaobai and Nosal, Eva-Marie and Palmer, Kaitlin and Shiu, Yu and Singh, Gurisht} } @article {53296, title = {Predator-prey interactions in the Southern California Bight}, journal = {The Journal of the Acoustical Society of America}, volume = {144}, year = {2018}, month = {Jan-09-2018}, pages = {1921 - 1921}, abstract = {

The Southern California Bight (SCB) is an important foraging area for a variety of cetacean species, including blue whales and beaked whales. However, the interactions of these species with their prey (krill and deep-water squid, respectively) can be very difficult to observe. Moorings combining passive and active acoustics were deployed at two locations in the SCB in two consecutive fall and winter seasons. A High-frequency Acoustic Recording Package sampling at 200 kHz recorded the full range of baleen and beaked whale signals. The active acoustic system on each mooring included two Simrad Wide Band Acoustic Transceivers (WBAT). A bottom-mounted WBAT had an upward looking 70 kHz transducer and the one at 300 m depth had upward looking 70 kHz and 200 kHz transducers. Over the course of four months, blue whale songs and social calls were recorded on both moorings. Beaked whale echolocation clicks were commonly detected on the mooring deployed offshore, with only rare beaked whale encounters on the coastal mooring. Backscatter data indicated overlap in the presence of cetacean predators and their prey. Scattering layer dynamics were dominated by regular diel migration, with differences in scatterer abundance between mooring sites, as well as on 2\–5 day time scales.

}, issn = {0001-4966}, doi = {10.1121/1.5068414}, url = {http://asa.scitation.org/doi/10.1121/1.5068414}, author = {{\v S}irovi{\'c}, Ana and Baumann-Pickering, Simone and Warren, Joseph} } @article {16647, title = {Management of acoustic metadata for bioacoustics}, journal = {Ecological Informatics}, volume = {31}, year = {2016}, month = {Jan-01-2016}, pages = {122 - 136}, issn = {15749541}, doi = {10.1016/j.ecoinf.2015.12.002}, url = {http://linkinghub.elsevier.com/retrieve/pii/S1574954115001983}, author = {Roch, Marie A. and Batchelor, Heidi and Baumann-Pickering, Simone and Catherine L. Berchok and Cholewiak, Danielle and Fujioka, Ei and Garland, Ellen C. and Herbert, Sean and Sofie M. Van Parijs and Risch, Denise and {\v S}irovi{\'c}, Ana and Soldevilla, Melissa S.} }