vector digital data https://www.wildlife.ca.gov/Data/BIOS ftp://ftp.wildlife.ca.gov/BDB/GIS/BIOS/Public_Datasets/300_399/ds395.zip Aerial at-sea and coastal surveys were conducted to examine the distribution and abundance of marine mammals (Pierson et al. 2004) off Southern California, from Cambria, California to the Mexican border and including the area 90 to 180 km from the shoreline. From May 1999 to January 2002, nine complete aerial surveys were flown throughout the survey area, with monthly replicated (n=2 per month/year) surveys flown throughout the central portion (e.g., area surrounding the northern Channel Islands). In total, flights occurred on 102 days, covering over 54,640 km of transects throughout the entire southern California Bight (Bight) during January, May, and September. Along coastal transects while on effort, a total of 1588 sightings of marine mammals were recorded comprising 9 species. Along offshore transects while on effort, a total of 1278 sightings were recorded comprising 18 species. In total, 20 unique species were identified including four pinnipeds, one carnivore (California sea otter), and 15 cetaceans. Recent changes in oceanography and human demography prompted a need for updated information regarding at-sea populations of seabirds and marine mammals in the Bight. Complete -122.087508 -116.965358 35.670759 32.378163 None aerial survey, marine mammals, biota, environment ISO 19115 Topic Categories biota environment None California None This information may be cited and analyzed for summary reports but not used for scientific publication without permission from the authors. Please cite US Geological Survey and Humboldt State University if these data are used or included in developed products.Disclaimer: The State makes no claims, promises, or guarantees about the accuracy, completeness, reliability, or adequacy of these data and expressly disclaims liability for errors and omissions in these data. No warranty of any kind, implied, expressed, or statutory, including but not limited to the warranties of non-infringement of third party rights, title, merchantability, fitness for a particular purpose, and freedom from computer virus, is given with respect to these data. Extensive fieldwork in 1999-2002 was conducted jointly by the U.S. Geological Survey (Western Ecological Research Center, Vallejo and Dixon, California; Principal Investigators J.Y. Takekawa and D.L. Orthmeyer) and Humboldt State University (Department of Wildlife, Arcata, California; Principal Investigators R.T. Golightly and H.R. Carter; Project Leader: G.J. McChesney). Major contributions to fieldwork were made by J. Mason and W. McIver. Significant contributions to data analyses were made by W. Perry, J. Yee, J. Adams, and J. Ackerman. Major project cooperators included Minerals Management Service (M. Pierson, M. McCrary) and the U.S. Navy (S. Schwartz, T. Keeney), and California Department of Fish and Game (P. Kelly, E. Burkett). Version 6.2 (Build 9200) ; Esri ArcGIS 10.6.1.9270 Vector GT-polygon composed of chains 490 NAD 1983 California Teale Albers 34.0 40.5 -120.0 0.0 0.0 -4000000.0 coordinate pair 0.000000003754707655900803 0.000000003754707655900803 meter D North American 1983 GRS 1980 6378137.0 298.257222101 ds395 FID Internal feature number. ESRI Sequential unique whole numbers that are automatically generated. Shape Feature geometry. ESRI Coordinates defining the features. TGRIDALB_I unique identifier for 5-minute blocks USGS OID_ ds395_EX1 MONTH Month of survey - 1=January, 5=May, or 9=September USGS MMBM Blue Whale (Balaenoptera musculus) - proportion of surveys across years where animals were detected in 5-minute blocks (NOT density). USGS MMBM_BP Blue Whale (Balaenoptera musculus) and Fin Whale (Balaenoptera physalus) combined - proportion of surveys across years where animals were detected in 5-minute blocks (NOT density). USGS MMBM_BP_MN Blue Whale (Balaenoptera musculus) Fin Whale (Balaenoptera physalus), and Humpback Whale (Megaptera novaeangliae) combined - proportion of surveys across years where animals were detected in 5-minute blocks (NOT density). USGS MMBP Fin Whale (Balaenoptera physalus) - proportion of surveys across years where animals were detected in 5-minute blocks (NOT density). USGS MMCU Northern fur seal (Callorhinus ursinus) - proportion of surveys across years where animals were detected in 5-minute blocks (NOT density). MMDD Long and Short Beaked Common Dolphin (includes both Delphinus delphis and D. capensis) proportion of surveys across years where animals were detected in 5-minute blocks (NOT density). USGS MMEL Sea Otter (Enhydra lutris) - proportion of surveys across years where animals were detected in 5-minute blocks (NOT density). USGS MMER Grey Whale (Eschrichtius robustus) - proportion of surveys across years where animals were detected in 5-minute blocks (NOT density). USGS MMGG Risso's Dolphin (Grampus griseus) - proportion of surveys across years where animals were detected in 5-minute blocks (NOT density). USGS MMLB Northern right-whale dolphin (Lissodelphis borealis) - proportion of surveys across years where animals were detected in 5-minute blocks (NOT density) USGS MMLO Pacific white-sided dolphin (Lagenorhynchus obliquidens) proportion of surveys across years where animals were detected in 5-minute blocks (NOT density). USGS MMMA Northern elephant seal (Mirounga angustirostris) - proportion of surveys across years where animals were detected in 5-minute blocks (NOT density). USGS MMMN Humpback Whale (Megaptera novaeangliae) - proportion of surveys across years where animals were detected in 5-minute blocks (NOT density). USGS MMOO Killer whale (Orcinus orca) - proportion of surveys across years where animals were detected in 5-minute blocks (NOT density). USGS MMPD Dall's porpoise (Phocoenoides dalli) - proportion of surveys across years where animals were detected in 5-minute blocks (NOT density). USGS MMPM Sperm whale (Physeter macrocephalus) - proportion of surveys across years where animals were detected in 5-minute blocks (NOT density). USGS MMPV Harbor Seal (Phoca vitulina) - proportion of surveys across years where animals were detected in 5-minute blocks (NOT density). USGS MMTT Bottlenose Dolphin (Tursiops truncatus) - (includes both offshore and coastal forms); proportion of surveys across years where animals were detected in 5-minute blocks (NOT density). USGS MMZC California Sea Lion (Zalophus californianus) - proportion of surveys across years where animals were detected in 5-minute blocks (NOT density). USGS MMZX Cuvier's beaked whale (Ziphius cavirostris) - proportion of surveys across years where animals were detected in 5-minute blocks (NOT density). USGS TGRIDALB_I unique identifier for 5-minute blocks USGS See access and use constraints information. Shapefile 0.064 20200818 FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998 local time