https://doi.org/10.82144/f095db80 https://seamap.env.duke.edu/dataset/288 https://www.gbif.org/dataset/731820d0-5054-4dec-b630-daed72751475 https://obis.org/dataset/ac6a685e-3f10-4658-80db-b1106b440ccc 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, ME to 2 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 Marine Animal Survey Marine mammals Sea turtles Vessel Visual Sighting 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/288 Oceans,North Atlantic Ocean -69.017 -64.554 45.104 42.811 1991-07-24 1991-08-27 Scientific names are based on the Integrated Taxonomic Information System (ITIS). genus Balaenoptera Baleen whales species Balaenoptera acutorostrata Common minke whale species Balaenoptera physalus Fin whale order Cetacea Cetaceans species Cetorhinus maximus Basking shark family Delphinidae Dolphins species Dermochelys coriacea Leatherback sea turtle species Eubalaena glacialis North Atlantic right whale genus Globicephala Pilot whales species Halichoerus grypus Atlantic gray seal species Lagenorhynchus acutus Atlantic white-sided dolphin species Megaptera novaeangliae Humpback whale species Phoca vitulina Harbor seal species Phocoena phocoena Harbor porpoise species Physeter macrocephalus Sperm whale PRIMARY OBJECTIVES 1) Estimate the abundance of harbor porpoises in the Gulf of Maine - Bay of Fundy - Nova Scotia area. 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. SECONDARY OBJECTIVES 1) Estimate the abundance and spatial distribution of other cetaceans. 2) Determine if harbor porpoise avoid this ship, and if so, at what distance. 3) Determine if there is a spatial distribution pattern of mother-calf pairs of harbor porpoise. 4) Compare the abundance estimate and spatial distribution of harbor porpoise as seen this year with that seen in previous years. 5) Investigate if inland bays can be surveyed using a rigidhull inflatable boat as the observation platform in a line transect survey. 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_288 2025-07-31T14:12:45-04:00 dataset Palka, D. 2013. NEFSC Harbor Porpoise 1991. Version 1.0.0. Dataset published in OBIS-SEAMAP. https://doi.org/10.82144/f095db80. OBIS-SEAMAP Dataset Page UTF-8 Interactive map https://seamap.env.duke.edu/dataset/288 FGDC Metadata UTF-8 XML https://seamap.env.duke.edu/dataset/288/fgdc EML Metadata UTF-8 XML https://seamap.env.duke.edu/dataset/288/eml OBIS-SEAMAP zd_288 zd_288 David Potter, National Marine Fisheries Service. 1991. CRUISE REPORT OF THE HARBOR PORPOISE SURVEY. Cruise report: 1991 AJ91-02.