Details:

Personal Author:
Chivers, Susan J. ; Perryman, Wayne L. ; Kellar, Nicholas M. ; Carretta, James V. ; Archer, Frederick I. (Frederick Ivan), 1968- ; ... More +
Chivers, Susan J. ; Perryman, Wayne L. ; Kellar, Nicholas M. ; Carretta, James V. ; Archer, Frederick I. (Frederick Ivan), 1968- ; Redfern, Jessica Veneris ; Henry, Annette Elizabeth ; Lynn, Morgan S. ; Hall, Candice ; Jackson, Alan R. (Alan Robert) ; Serra-Valente, Gabriela ; Moore, Thomas J. ; Surrey-Marsden, Claire ; Ballance, Lisa T. (Lisa Taylor) Less -
Corporate Authors:
Southwest Fisheries Science Center (U.S.)
NOAA Program & Office:
NMFS (National Marine Fisheries Service) ; SWFSC (Southwest Fisheries Science Center)
NMFS (National Marine Fisheries Service) ; SWFSC (Southwest Fisheries Science Center) Less -
Description:
The 'Ecosystem Survey of Delphinus Species' research survey focused on the two species of common dolphin, Delphinus delphis and D. capensis, 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 Delphinus 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, D. capensis, 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
Keywords:
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Common Dolphin Conservation Delphinus Geographical Distribution Marine Ecology
Series:
NOAA-TM-NMFS-SWFSC ; 464 ; NOAA technical memorandum NMFS
NOAA-TM-NMFS-SWFSC ; 464 ; NOAA technical memorandum NMFS Less -
Document Type:
Technical Memorandum
Place as Subject:
California ; Pacific Coast
California ; Pacific Coast Less -
Name as Subject:
McArthur II (Ship). ; McArthur II (Ship).
McArthur II (Ship). ; McArthur II (Ship). Less -
Rights Information:
Public Domain
Compliance:
Library
Main Document Checksum:
[+]
urn:sha256:f34b52a34cbd8a10a7dd69011794f05ce9483db0ac67d81cfd630a31c401be34
Download URL:
https://repository.library.noaa.gov/view/noaa/3918/noaa_3918_DS1.pdf
File Type:

Supporting Files

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