SWFSC Marine Mammal Survey, PODS 1993, Cruise 1509
Citation
Gerrodette, T. 2004. SWFSC Marine Mammal Survey, PODS 1993, Cruise 1509. Data downloaded from OBIS-SEAMAP (http://seamap.env.duke.edu/dataset/215) on yyyy-mm-dd. https://doi.org/10.15468/y4d59q accessed via GBIF.org on 2024-09-01.Description
Original provider: NOAA Southwest Fisheries Science Center (SWFSC) Dataset credits: NOAA Southwest Fisheries Science Center (SWFSC) Abstract: This 1993 line-transect survey was designed to make abundance estimates of the northern stock of common dolphin, Delphinus delphis, in the eastern Pacific. This stock of dolphin is taken in the tropical tuna fishery. The index of relative abundance for this stock, computed from sightings on tuna vessels, has declined substantially in the last decade. However, because tuna vessels cover only the southern portion of the stock's range, the declines in the index may be due to a northward shift in distribution, rather than an actual decline in abundance. The 1993 survey was designed to produce the first range-wide estimates of abundance for the northern common dolphin and its recently described congener, Delphinus capensis. This survey was conducted by the NOAA Southwest Fisheries Science Center aboard NOAA Ships McArthur and David Starr Jordan for a combined total of approximately 32,000 kilometers surveyed from late July to early November 1993. This dataset provides the time-date and geographical coordinates, by species/stock, of all cetaceans detected during the survey, as well as the daily and intra-daily start and end points of the line-transect survey by the NOAA Ship David Starr Jordan. Purpose: The primary objective of the cruise was to survey the area inhabited by the northern stock of common dolphins, and to make an estimate of its absolute abundance in order to assess the impact of the dolphins killed by the United States and international yellowfin tuna purse seine fleet in the eastern tropical Pacific. Supplemental information: [2021-04-12] Updated with additional attributes. SWFSC MMTD Cruise Number: 1509 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)Purpose
The primary objective of the cruise was to survey the area inhabited by the northern stock of common dolphins, and to make an estimate of its absolute abundance in order to assess the impact of the dolphins killed by the United States and international yellowfin tuna purse seine fleet in the eastern tropical Pacific.Sampling Description
Study Extent
NASampling
NAMethod steps
- NA
Additional info
marine, harvested by iOBISTaxonomic Coverages
Scientific names are based on the Integrated Taxonomic Information System (ITIS).
-
Stenella longirostris orientalisrank: subspecies
-
Stenella coeruleoalbacommon name: Striped Dolphin rank: species
-
Steno bredanensiscommon name: Rough-toothed Dolphin rank: species
-
Delphinus capensiscommon name: Long-beaked Common Dolphin rank: species
-
Delphinus delphiscommon name: Short-beaked Common Dolphin rank: species
-
Tursiops truncatuscommon name: Common Bottlenose Dolphin rank: species
-
Stenella attenuatacommon name: Pantropical Spotted Dolphin rank: species
-
Grampus griseuscommon name: Risso's Dolphin rank: species
-
Lagenorhynchus obliquidenscommon name: Pacific White-sided Dolphin rank: species
-
Stenella longirostriscommon name: Spinner Dolphin rank: species
-
Feresa attenuatacommon name: Pygmy Killer Whale rank: species
-
Pseudorca crassidenscommon name: False Killer Whale rank: species
-
Globicephala macrorhynchuscommon name: Short-finned Pilot Whale rank: species
-
Orcinus orcacommon name: Killer Whale rank: species
-
Phocoena sinuscommon name: Gulf of California harbor porpoise rank: species
-
Physeter macrocephaluscommon name: Sperm Whale rank: species
-
Kogia brevicepscommon name: Pygmy Sperm Whale rank: species
-
Kogia simacommon name: Dwarf Sperm Whale rank: species
-
Hyperoodontidaerank: family
-
Delphinuscommon name: common dolphins rank: genus
-
Mesoplodoncommon name: beaked whales rank: genus
-
Stenella attenuata graffmanicommon name: coastal spotted dolphin rank: subspecies
-
Ziphius cavirostriscommon name: Cuvier's Beaked Whale rank: species
-
Balaenopteracommon name: baleen whales rank: genus
-
Balaenoptera acutorostratacommon name: Minke Whale rank: species
-
Balaenoptera edenicommon name: Eden's whale rank: species
-
Balaenoptera physaluscommon name: Fin Whale rank: species
-
Balaenoptera musculuscommon name: Blue Whale rank: species
-
Megaptera novaeangliaecommon name: Humpback Whale rank: species
-
Cetaceacommon name: cetaceans rank: order
-
Cetaceacommon name: cetaceans rank: order
-
Cetaceacommon name: cetaceans rank: order
-
Kogiacommon name: pygmy sperm whales rank: genus
-
Stenella attenuatacommon name: Pantropical Spotted Dolphin rank: species
-
Cetaceacommon name: cetaceans rank: order
-
Cetaceacommon name: cetaceans rank: order
-
Balaenopteracommon name: baleen whales rank: genus
-
Caretta carettacommon name: Loggerhead Sea Turtle rank: species
-
Dermochelys coriaceacommon name: Leatherback Sea Turtle rank: species
-
Lepidochelys olivaceacommon name: Olive Ridley rank: species
-
Mirounga angustirostriscommon name: Northern Elephant Seal rank: species
-
Caniformiacommon name: pinnipeds rank: suborder
-
Phocidaecommon name: earless seals rank: family
-
Cheloniidaecommon name: Sea Turtles rank: family
-
Zalophus californianuscommon name: California Sea Lion rank: species
Geographic Coverages
Pacific,California Current,California,Mexico,Gulf of California
Bibliographic Citations
Contacts
Jeffrey Mooreoriginator
position: Primary contact
Southwest Fisheries Science Center, NOAA
email: jeff.e.moore@noaa.gov
homepage: https://www.fisheries.noaa.gov/west-coast/science-data/california-current-marine-mammal-assessment-program
OBIS-SEAMAP
metadata author
Marine Geospatial Ecology Lab, Duke University
A328 LSRC building
Durham
27708
NC
US
email: seamap-contact@duke.edu
homepage: https://seamap.env.duke.edu
OBIS-SEAMAP
distributor
Marine Geospatial Ecology Lab, Duke University
A328 LSRC building
Durham
27708
NC
US
email: seamap-contact@duke.edu
homepage: https://seamap.env.duke.edu
Jeffrey Moore
owner
position: Primary contact
Southwest Fisheries Science Center, NOAA
email: jeff.e.moore@noaa.gov
homepage: https://www.fisheries.noaa.gov/west-coast/science-data/california-current-marine-mammal-assessment-program
Jeffrey Moore
administrative point of contact
position: Primary contact
Southwest Fisheries Science Center, NOAA
email: jeff.e.moore@noaa.gov
homepage: https://www.fisheries.noaa.gov/west-coast/science-data/california-current-marine-mammal-assessment-program