https://doi.org/10.82144/fbe9be8b https://seamap.env.duke.edu/dataset/537 https://www.gbif.org/dataset/dff0a4d0-f3b7-4455-a49d-497ae22b52af https://obis.org/dataset/dafba9fd-f35c-45dd-97f0-bb70fc15d19c Sofie Van Parijs NOAA Northeast Fisheries Science Center Primary contact sofie.vanparijs@noaa.gov http://www.nefsc.noaa.gov/psb/acoustics/index.html OBIS-SEAMAP Marine Geospatial Ecology Lab, Duke University

A328 LSRC building Durham NC 27708 US

seamap-contact@duke.edu https://seamap.env.duke.edu OBIS-SEAMAP Marine Geospatial Ecology Lab, Duke University

A328 LSRC building Durham NC 27708 US

seamap-contact@duke.edu https://seamap.env.duke.edu distributor Sofie Van Parijs NOAA Northeast Fisheries Science Center Primary contact sofie.vanparijs@noaa.gov http://www.nefsc.noaa.gov/psb/acoustics/index.html owner 2025-07-31 eng Original provider: NOAA Northeast Fisheries Science Center (NEFSC) Dataset credits: Sofie Van Parijs Abstract: The primary objectives of the NEFSC Marine Mammal Abundance Cruise were to: (1) determine the spatial distribution and abundance of cetaceans and turtles in the study region, (2) determine the spatial distribution and relative abundance of sea birds in the same region, and (3) use passive acoustics to record vocalizing cetaceans that will hopefully be used to improve the abundance estimates derived from the visual surveys. A secondary objective was to compare the distribution of these species with each other, physical characteristics, such as depth contours and water temperature, and biological characteristics, such as relative plankton distributions. Marine Biology Passive acoustic detection passive acoustics towed array detection N/A The Porpoise detector was developed by Douglas Gillespie and Olly Chapple for the International Fund Welfare (IFAW). It uses analog envelope tracing and software detectors; two narrow bandpass filters centered around 50 and 72 kHz and one broadband filter (100 kHz - 150 kHz). These are used to detect the broadband click ultrasonic vocalizations of dolphins, and the narrow band clicks produced by the harbor porpoise (<i>Phoceona phocena</i>), Vaquita (<i>Phocena sinus</i>) and <i>Kogia spp.</i> The detector was extensively trialled in the Baltic (Gillespie et al. 2005; OBIS-SEAMAP dataset: <a href=http://seamap.env.duke.edu/datasets/detail/343>Baltic Porpoise Acoustic Surveys 01-02</a>) and upper Gulf of California. References: Gillespie, D., P. Berggren, S. Brown, I. Kuklik, C. Lacey, T. Lewis, J. Matthews, R. Mclanaghan, A. Moscrop and N. Tregenza. 2005. Relative abundance of harbour porpoises (<i>Phocoena phocoena</i>). Journal of Cetacean Research and Management: 7(1):51-57. Additional attributes caveat: The ranges and bearings associated with these data have not been validated or corrected in any way so they may vary from fairly accurate to completely wrong. To the extent possible under law, the publisher has waived all rights to these data and has dedicated them to the Public Domain (CC0 1.0). Users may copy, modify, distribute and use the work, including for commercial purposes, without restriction. https://seamap.env.duke.edu/dataset/537 Oceans,mid Atlantic -73.514885 -65.772072 40.986881 37.486649 2004-06-26 2004-08-03 Scientific names are based on the Integrated Taxonomic Information System (ITIS). suborder Odontoceti Toothed whales During the NEFSC Marine Mammal Abundance Cruise 2004, no detections of harbor porpoise were made, although automated detections of echolocating dolphin species were made as groups passed directly by the hydrophone. A single porpoise-like event was attributed to a sighting of <i>Kogia simus</i>. notPlanned Sofie Van Parijs NOAA Northeast Fisheries Science Center Primary contact sofie.vanparijs@noaa.gov http://www.nefsc.noaa.gov/psb/acoustics/index.html NA NA NA Sofie Van Parijs owner NA zd_537 2025-07-31T14:19:29-04:00 dataset Van Parijs, S. 2025. NEFSC Marine Mammal Abundance Cruise 2004 Passive Acoustic Monitoring - Porpoise Detections. Version 1.0.0. Dataset published in OBIS-SEAMAP. https://doi.org/10.82144/fbe9be8b. OBIS-SEAMAP Dataset Page UTF-8 Interactive map https://seamap.env.duke.edu/dataset/537 FGDC Metadata UTF-8 XML https://seamap.env.duke.edu/dataset/537/fgdc EML Metadata UTF-8 XML https://seamap.env.duke.edu/dataset/537/eml OBIS-SEAMAP zd_537 zd_537