CalCOFI marine mammal surveys 2004-2008 - off effort
Citation
Douglas, A. 2012. CalCOFI marine mammal surveys 2004-2008 - off effort. Data downloaded from OBIS-SEAMAP (http://seamap.env.duke.edu/dataset/794) on yyyy-mm-dd. https://doi.org/10.15468/kucz3f accessed via GBIF.org on 2024-10-10.Description
Original provider: Annie Douglas, Cascadia Research Collective Dataset credits: Annie Douglas, Cascadia Research Abstract: From July 2004 to April 2008 dedicated visual observers following consistent line-transect methods (Buckland et al., 1993; Kinzey et al., 2003) observed from the CalCOFI platforms on quarterly cruises. Observers used handheld 7X50 reticle Fujinon binoculars to sight, identify, and make school size estimates of cetaceans and pinnipeds encountered along the transect lines between CalCOFI water sampling stations. The southern water sampling stations are set along six, parallel lines running southwest to northeast, with lines increasing in length from north to south (470 – 700 km) and stations occurring every 37 km in coastal and continental shelf waters and every 74 km offshore. Three research vessels were used for the sixteen surveys, Scripps Institution of Oceanography Roger Revelle (2 surveys) and New Horizon (8 surveys) and, NOAA David Starr Jordan (6 surveys), vessel height varied from 8.1-13.2m and survey speed varied from 10 to 12 knots. Purpose: The waters off southern California are remarkably diverse and species rich, but they are also an area of swift commercial development, navy training activity, population growth and climate change. Continued visual marine mammal and seabird surveys working in concert with oceanographic ecosystem investigations are essential for monitoring the health and changes of the California current system. Supplemental information: Effort tracklines may overlap with data published in the CalCOFI and NMFS Seabird and Marine Mammal Observation Data, 1987-2006 dataset. However, data collected for this dataset used different methods and observers. Please contact the primary contact listed for more details.Purpose
The waters off southern California are remarkably diverse and species rich, but they are also an area of swift commercial development, navy training activity, population growth and climate change. Continued visual marine mammal and seabird surveys working in concert with oceanographic ecosystem investigations are essential for monitoring the health and changes of the California current system.
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).
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Balaenoptera acutorostratacommon name: Minke Whale rank: species
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Balaenoptera borealiscommon name: Sei Whale rank: species
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Balaenopteracommon name: baleen whales rank: genus
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Balaenoptera musculuscommon name: Blue Whale rank: species
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Balaenoptera physaluscommon name: Fin Whale rank: species
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Delphinus capensiscommon name: Long-beaked Common Dolphin rank: species
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Delphinus delphiscommon name: Short-beaked Common Dolphin rank: species
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Delphinuscommon name: common dolphins rank: genus
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Eschrichtius robustuscommon name: Gray Whale rank: species
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Grampus griseuscommon name: Risso's Dolphin rank: species
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Globicephala macrorhynchuscommon name: Short-finned Pilot Whale rank: species
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Lissodelphis borealiscommon name: Northern Right Whale Dolphin rank: species
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Lagenorhynchus obliquidenscommon name: Pacific White-sided Dolphin rank: species
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Megaptera novaeangliaecommon name: Humpback Whale rank: species
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Phocoenoides dallicommon name: Dall's Porpoise rank: species
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Physeter macrocephaluscommon name: Sperm Whale rank: species
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Steno bredanensiscommon name: Rough-toothed Dolphin rank: species
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Tursiops truncatuscommon name: Common Bottlenose Dolphin rank: species
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Delphinidaecommon name: dolphins rank: family
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Cetaceacommon name: cetaceans rank: order
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Cetaceacommon name: cetaceans rank: order
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Ziphius cavirostriscommon name: Cuvier's Beaked Whale rank: species
Geographic Coverages
Southern California
Bibliographic Citations
Contacts
Annie Douglasoriginator
position: Primary contact
Cascadia Research Collective
email: ABDouglas@cascadiaresearch.org
homepage: http://www.cascadiaresearch.org
OBIS-SEAMAP
metadata author
Marine Geospatial Ecology Lab, Duke University
A328 LSRC building
Durham
27708
NC
US
email: seamap-contact@duke.edu
homepage: http://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: http://seamap.env.duke.edu
Annie Douglas
owner
position: Primary contact
Cascadia Research Collective
email: ABDouglas@cascadiaresearch.org
homepage: http://www.cascadiaresearch.org
Annie Douglas
administrative point of contact
position: Primary contact
Cascadia Research Collective
email: ABDouglas@cascadiaresearch.org
homepage: http://www.cascadiaresearch.org