https://doi.org/10.82144/c710d63d https://seamap.env.duke.edu/dataset/1069 https://www.gbif.org/dataset/b703e667-da11-48e3-8e44-41638b040d7d https://obis.org/dataset/515b3516-7f86-42d7-a439-bd29411c9eea Jeffrey Moore Southwest Fisheries Science Center, NOAA Primary contact jeff.e.moore@noaa.gov https://www.fisheries.noaa.gov/west-coast/science-data/california-current-marine-mammal-assessment-program Dave Weller NOAA Southwest Fisheries Science Center Secondary contact dave.weller@noaa.gov 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 Jeffrey Moore Southwest Fisheries Science Center, NOAA Primary contact jeff.e.moore@noaa.gov https://www.fisheries.noaa.gov/west-coast/science-data/california-current-marine-mammal-assessment-program owner Dave Weller NOAA Southwest Fisheries Science Center Secondary contact dave.weller@noaa.gov originator 2025-07-31 eng Original provider: NOAA Southwest Fisheries Science Center (SWFSC) Dataset credits: NOAA Southwest Fisheries Science Center (SWFSC) Abstract: The 2009 "Ecosystem Survey of Delphinus Species" research survey focused on the two species of common dolphin, <I>Delphinus delphis</I> and <I>D. capensis</I>, found off southern California, USA, and Baja California, Mexico. The primary objective was to provide information to improve conservation and management plans for these species. The project used a multidisciplinary approach. For both <i>Delphinus</i> species, data were collected to estimate abundance, pregnancy and birth rates, timing of reproduction, gene flow, and contaminant concentrations. Oceanographic data were collected to characterize habitat, and data on distribution and abundance of seabirds, prey fishes, and squids were collected to further characterize the ecosystem in which these dolphins live. Photographs of dolphin schools were taken from a NOAA Twin Otter aircraft while the survey was being conducted. The aerial photographs will provide count and measurement data to calibrate observer estimates of school size and to estimate timing of reproduction and birth rates. This research will facilitate understanding population demography of these species in an ecosystem framework. Essential information about the primary focal species, <i>D. capensis</i>, will greatly increase our knowledge about this coastal species and the geographic extent of a Mexico-U.S. transboundary stock. For additional information about the Delphinus cruise, please see http://swfsc.noaa.gov/prd-delphinus.aspx. 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 Whales Dolphins Delphinus Population Abundance Survey Census PODS N/A SWFSC MMTD Cruise Number: 1640 Perpendicular distance will be released upon permission by the contributor. Please contact the contributor if needed. Attribute descriptions for effort data: dist: Length of the segment (km) Mode: Effort mode type (C = closing mode; P = passing mode) 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/1069 Oceans,Pacific,California Current,California,Mexico,Gulf of California -122.728167 -109.7255 37.594667 21.864 2009-09-07 2009-12-05 Scientific names are based on the Integrated Taxonomic Information System (ITIS). species Arctocephalus townsendi Guadalupe fur seal genus Balaenoptera Baleen whales species Balaenoptera acutorostrata Common minke whale species Balaenoptera edeni Eden's whale species Balaenoptera musculus Blue whale species Balaenoptera physalus Fin whale species Berardius bairdii Baird's beaked whale species Callorhinus ursinus Northern fur seal suborder Caniformia Pinnipeds species Caretta caretta Loggerhead sea turtle order Cetacea Cetaceans family Cheloniidae Sea turtles family Delphinidae Dolphins genus Delphinus Common dolphins species Delphinus capensis Long-beaked common dolphin species Delphinus delphis Short-beaked common dolphin species Globicephala macrorhynchus Short-finned pilot whale species Grampus griseus Risso's dolphin family Hyperoodontidae Beaked whales species Lagenorhynchus obliquidens Pacific white-sided dolphin species Lepidochelys olivacea Olive ridley species Lissodelphis borealis Northern right whale dolphin species Megaptera novaeangliae Humpback whale species Mirounga angustirostris Northern elephant seal species Orcinus orca Killer whale family Otariidae Eared seals family Phocidae Earless seals species Phocoena phocoena Harbor porpoise family Phocoenidae Porpoises species Phocoenoides dalli Dall's porpoise species Physeter macrocephalus Sperm whale species Stenella attenuata Pantropical spotted dolphin species Stenella coeruleoalba Striped dolphin subspecies Stenella longirostris orientalis species Steno bredanensis Rough-toothed dolphin species Tursiops truncatus Common bottlenose dolphin species Zalophus californianus California sea lion species Ziphius cavirostris Cuvier's beaked whale The primary objectives of the 2009 Delphinus ecosystem cruise were (1) to characterize the distribution, habitat and reproductive characteristics of long- and short-beaked common dolphins, and (2) to improve non-lethal sampling techniques for studying reproduction in wild, free-ranging cetaceans. notPlanned Jeffrey Moore Southwest Fisheries Science Center, NOAA Primary contact jeff.e.moore@noaa.gov https://www.fisheries.noaa.gov/west-coast/science-data/california-current-marine-mammal-assessment-program NA NA NA Jeffrey Moore owner Dave Weller originator NA zd_1069 2025-07-31T16:30:01-04:00 dataset Moore, J. and D. Weller. 2021. SWFSC Marine Mammal Survey, Delphinus 2009, Cruise 1640. Version 1.7.0. Dataset published in OBIS-SEAMAP. https://doi.org/10.82144/c710d63d. OBIS-SEAMAP Dataset Page UTF-8 Interactive map https://seamap.env.duke.edu/dataset/1069 FGDC Metadata UTF-8 XML https://seamap.env.duke.edu/dataset/1069/fgdc EML Metadata UTF-8 XML https://seamap.env.duke.edu/dataset/1069/eml OBIS-SEAMAP zd_1069 zd_1069 Susan J. Chivers, Wayne L. Perryman, Nicholas M. Kellar, James V. Carretta, Frederick I. Archer, Jessica V. Redfern, Annette E. Henry, Morgan S. Lynn, Candice Hall, Al Jackson, Gabriela Serra-Valente, Thomas J. Moore, Claire Surrey-Marsden, and Lisa T. Ba. 2010. ECOSYSTEM SURVEY OF Delphinus species cruise report. NOAA Technical Memorandum: NOAA-TM-NMFS-SWFSC-464.