https://doi.org/10.82144/e926a26b https://seamap.env.duke.edu/dataset/56 https://www.gbif.org/dataset/0c77e38a-51d5-4db0-ba9f-bfd2c0730d97 https://obis.org/dataset/81933bf6-64fa-433d-9f96-84a30b212c3d Debi Palka NOAA Northeast Fisheries Science Center Primary contact dpalka@whsun1.wh.whoi.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 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 Debi Palka NOAA Northeast Fisheries Science Center Primary contact dpalka@whsun1.wh.whoi.edu owner 2025-07-31 eng Original provider: NOAA Northeast Fisheries Science Center (NEFSC) Dataset credits: National Marine Fisheries Service Abstract: The ship survey was performed from 22 July 1991 to 30 August 1991 to estimate the abundance and spatial distribution of harbor porpoises. The study area, covering approximately 13,300 nm, was from Port Clyde, Maine to St. John, New Brunswick over to the Nova Scotian coast, up to Liverpool, Nova Scotia. Occurrence GBIF Dataset Type Vocabulary: http://rs.gbif.org/vocabulary/gbif/dataset_type.xml Observation GBIF Dataset Subtype Vocabulary: http://rs.gbif.org/vocabulary/gbif/dataset_subtype.xml Marine Biology Visual sighting Vessels Sightings Cetaceans Dolphins Marine mammals Whales Animals Harbor Porpoise Sea turtles ShipSurvey Observations Transects Line transects biota environment geoscientificinformation location oceans Endangered Species Biomass Community Structure Range Changes Conservation Environmental Assessments Population Distribution Population Size Abundance Spatial distribution N/A In addition to the sighting data, effort data was recorded every half hour or whenever conditions change. This dataset, therefore, should be used with the effort data. 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/56 Oceans,Atlantic,Atlantic Ocean,East coast,USA,United States Of America,Maine,Canada,New Brunswick -74.157 -68.364 39.308 36.576 1995-07-11 1995-08-01 Scientific names are based on the Integrated Taxonomic Information System (ITIS). order Cetacea Cetaceans family Delphinidae Dolphins species Feresa attenuata Pygmy killer whale genus Globicephala Pilot whales species Grampus griseus Risso's dolphin family Hyperoodontidae Beaked whales genus Kogia Pygmy sperm whales species Mesoplodon bidens Sowerby's beaked whale species Physeter macrocephalus Sperm whale genus Stenella Spinner dolphins species Stenella coeruleoalba Striped dolphin species Ziphius cavirostris Cuvier's beaked whale The primary objectives were:<br> 1) Estimate the abundance of harbor porpoises in the Gulf of Maine - Bay of Fundy - Nova Scotia area; and <br> 2) Investigate if there are any spatial distribution patterns of the harbor porpoises, and if those patterns are correlated with water depth or harbor porpoise group size.<br> The secondary objectives were:<br> 1) Estimate the abundance and spatial distribution of other cetaceans;<br> 2) Determine if harbor porpoise avoid this ship, and if so, at what distance;<br> 3) Determine if there is a spatial distribution pattern of mother-calf pairs of harbor porpoise;<br> 4) Compare the abundance estimate and spatial distribution of harbor porpoise as seen this year with that seen in previous years;<br> 5) Investigate if inland bays can be surveyed using a rigidhull inflatable boat as the observation platform in a line transect survey; and <br> 6) Determine if Buckland's sighting procedure (1991), which is a line transect survey using both a primary and marking team, is a feasible procedure to estimate the abundance of harbor porpoise in the Bay of Fundy area. notPlanned Debi Palka NOAA Northeast Fisheries Science Center Primary contact dpalka@whsun1.wh.whoi.edu NA NA NA Debi Palka owner NA zd_56 2025-07-31T14:03:36-04:00 dataset Palka, D. 2018. NEFSC 1995 AJ9501 (Part I). Version 1.0.0. Dataset published in OBIS-SEAMAP. https://doi.org/10.82144/e926a26b. OBIS-SEAMAP Dataset Page UTF-8 Interactive map https://seamap.env.duke.edu/dataset/56 FGDC Metadata UTF-8 XML https://seamap.env.duke.edu/dataset/56/fgdc EML Metadata UTF-8 XML https://seamap.env.duke.edu/dataset/56/eml OBIS-SEAMAP zd_56 zd_56 Potter, D., National Marine Fisheries Service. 1991. Cruise report of the harbor porpoise survey. Cruise report: 1991 AJ91-02.