erdGlobecBirds eng UTF8 dataset service Roy Mendelssohn NOAA NMFS SWFSC Environmental Research Division +1 831-420-3666 110 McAllister Road Santa Cruz CA 95060 USA erd.data@noaa.gov pointOfContact 2026-03-08 ISO 19115-2 Geographic Information - Metadata Part 2 Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) 3 column row temporal GLOBEC NEP Northern California Current Bird Data NH0005, 2000-2000, 0007 2026-03-08 creation coastwatch.pfeg.noaa.gov erdGlobecBirds GLOBEC https://en.wikipedia.org/wiki/Global_Ocean_Ecosystem_Dynamics information web browser Background Information Background information from the source information originator GLOBEC (GLOBal Ocean ECosystems Dynamics) NEP (Northeast Pacific) Northern California Current Bird Data from R/V New Horizon cruises NH0005 and 0007. As a part of the GLOBEC-Northeast Pacific project, we investigated variation in the abundance of marine birds in the context of biological and physical habitat conditions in the northern portion of the California Current System (CCS) during cruises during the upwelling season 2000. Continuous surveys of seabirds were conducted simultaneously in June (onset of upwelling) and August (mature phase of upwelling). Seabird surveys were conducted continuously during daylight, using a 300-m-wide transect strip. Within that strip, birds were counted that occurred within the 90 degree quadrant off the ship's bow that offered the best observation conditions. Observed counts of seabirds recorded as flying in a steady direction were adjusted for the effect of flight speed and direction relative to that of the ship (Spear et al., 1992; Spear and Ainley, 1997b). The effect of such flux is the most serious bias encountered during seabird surveys at sea (Spear et al., 2005). Known as random directional movement (as opposed to nonrandom directional movement, which occurs when birds are attracted or repelled from the survey vessel), this problem usually results in density overestimation because most species fly faster than survey vessels; densities of birds that fly slower or at a similar speed as the survey vessel (e.g., storm-petrels), or are flying in the same direction, are usually underestimated (Spear et al., 1992) (extracted from: David G. Ainley, Larry B. Spear, Cynthia T. Tynan, John A. Barth, Stephen D. Pierce, R. Glenn Ford and Timothy J. Cowles, 2005. Physical and biological variables affecting seabird distributions during the upwelling season of the northern California Current. Deep Sea Research Part II: Topical Studies in Oceanography, Volume 52, Issues 1-2, January 2005, Pages 123-143) For more information, see http://cis.whoi.edu/science/bcodmo/dataset.cfm?id=10053&flag=view or http://globec.whoi.edu/jg/info/globec/nep/ccs/birds%7Bdir=globec.whoi.edu/jg/dir/globec/nep/ccs/,data=globec.whoi.edu/jg/serv/globec/nep/ccs/birds.html0%7D Contact: Cynthia T. Tynan, ctynan@whoi.edu, Woods Hole Oceanographic Institution David G. Ainley, dainley@penguinscience.com, H.T. Harvey & Associates GLOBEC https://en.wikipedia.org/wiki/Global_Ocean_Ecosystem_Dynamics information web browser Background Information Background information from the source information pointOfContact animals aquatic area atmosphere atmospheric behavior biological biology biosphere bird birds california classification coastal code course current data direction ecosystems flight globec habitat identifier marine nep nh0005 northern number ocean recorded ship species speed surface surveyed transect unadjusted vertebrates wind winds theme Earth Science > Biosphere > Aquatic Ecosystems > Marine Habitat Earth Science > Biosphere > Aquatic Ecosystems > Coastal Habitat Earth Science > Biological Classification > Animals/Vertebrates > Birds Earth Science > Atmosphere > Atmospheric Winds > Surface Winds theme GCMD Science Keywords GLOBEC project longitude latitude time theme CF Standard Name Table v70 The data may be used and redistributed for free but is not intended for legal use, since it may contain inaccuracies. Neither the data Contributor, ERD, NOAA, nor the United States Government, nor any of their employees or contractors, makes any warranty, express or implied, including warranties of merchantability and fitness for a particular purpose, or assumes any legal liability for the accuracy, completeness, or usefulness, of this information. GLOBEC largerWorkCitation project Unidata Common Data Model Trajectory largerWorkCitation project eng geoscientificInformation 1 -126.132 -124.03 41.87 44.675 seconds 2000-05-30T00:00:00Z 2000-08-12T00:00:00Z GLOBEC NEP Northern California Current Bird Data NH0005, 2000-2000, 0007 2026-03-08 creation GLOBEC https://en.wikipedia.org/wiki/Global_Ocean_Ecosystem_Dynamics information web browser Background Information Background information from the source information originator GLOBEC (GLOBal Ocean ECosystems Dynamics) NEP (Northeast Pacific) Northern California Current Bird Data from R/V New Horizon cruises NH0005 and 0007. As a part of the GLOBEC-Northeast Pacific project, we investigated variation in the abundance of marine birds in the context of biological and physical habitat conditions in the northern portion of the California Current System (CCS) during cruises during the upwelling season 2000. Continuous surveys of seabirds were conducted simultaneously in June (onset of upwelling) and August (mature phase of upwelling). Seabird surveys were conducted continuously during daylight, using a 300-m-wide transect strip. Within that strip, birds were counted that occurred within the 90 degree quadrant off the ship's bow that offered the best observation conditions. Observed counts of seabirds recorded as flying in a steady direction were adjusted for the effect of flight speed and direction relative to that of the ship (Spear et al., 1992; Spear and Ainley, 1997b). The effect of such flux is the most serious bias encountered during seabird surveys at sea (Spear et al., 2005). Known as random directional movement (as opposed to nonrandom directional movement, which occurs when birds are attracted or repelled from the survey vessel), this problem usually results in density overestimation because most species fly faster than survey vessels; densities of birds that fly slower or at a similar speed as the survey vessel (e.g., storm-petrels), or are flying in the same direction, are usually underestimated (Spear et al., 1992) (extracted from: David G. Ainley, Larry B. Spear, Cynthia T. Tynan, John A. Barth, Stephen D. Pierce, R. Glenn Ford and Timothy J. Cowles, 2005. Physical and biological variables affecting seabird distributions during the upwelling season of the northern California Current. Deep Sea Research Part II: Topical Studies in Oceanography, Volume 52, Issues 1-2, January 2005, Pages 123-143) For more information, see http://cis.whoi.edu/science/bcodmo/dataset.cfm?id=10053&flag=view or http://globec.whoi.edu/jg/info/globec/nep/ccs/birds%7Bdir=globec.whoi.edu/jg/dir/globec/nep/ccs/,data=globec.whoi.edu/jg/serv/globec/nep/ccs/birds.html0%7D Contact: Cynthia T. Tynan, ctynan@whoi.edu, Woods Hole Oceanographic Institution David G. Ainley, dainley@penguinscience.com, H.T. Harvey & Associates ERDDAP tabledap 1 -126.132 -124.03 41.87 44.675 seconds 2000-05-30T00:00:00Z 2000-08-12T00:00:00Z tight ERDDAPtabledapDatasetQueryAndAccess https://coastwatch.pfeg.noaa.gov/erddap/tabledap/erdGlobecBirds ERDDAP:tabledap ERDDAP-tabledap ERDDAP's tabledap service (a flavor of OPeNDAP) for tabular (sequence) data. Add different extensions (e.g., .html, .graph, .das, .dds) to the base URL for different purposes. download GLOBEC NEP Northern California Current Bird Data NH0005, 2000-2000, 0007 2026-03-08 creation GLOBEC https://en.wikipedia.org/wiki/Global_Ocean_Ecosystem_Dynamics information web browser Background Information Background information from the source information originator GLOBEC (GLOBal Ocean ECosystems Dynamics) NEP (Northeast Pacific) Northern California Current Bird Data from R/V New Horizon cruises NH0005 and 0007. As a part of the GLOBEC-Northeast Pacific project, we investigated variation in the abundance of marine birds in the context of biological and physical habitat conditions in the northern portion of the California Current System (CCS) during cruises during the upwelling season 2000. Continuous surveys of seabirds were conducted simultaneously in June (onset of upwelling) and August (mature phase of upwelling). Seabird surveys were conducted continuously during daylight, using a 300-m-wide transect strip. Within that strip, birds were counted that occurred within the 90 degree quadrant off the ship's bow that offered the best observation conditions. Observed counts of seabirds recorded as flying in a steady direction were adjusted for the effect of flight speed and direction relative to that of the ship (Spear et al., 1992; Spear and Ainley, 1997b). The effect of such flux is the most serious bias encountered during seabird surveys at sea (Spear et al., 2005). Known as random directional movement (as opposed to nonrandom directional movement, which occurs when birds are attracted or repelled from the survey vessel), this problem usually results in density overestimation because most species fly faster than survey vessels; densities of birds that fly slower or at a similar speed as the survey vessel (e.g., storm-petrels), or are flying in the same direction, are usually underestimated (Spear et al., 1992) (extracted from: David G. Ainley, Larry B. Spear, Cynthia T. Tynan, John A. Barth, Stephen D. Pierce, R. Glenn Ford and Timothy J. Cowles, 2005. Physical and biological variables affecting seabird distributions during the upwelling season of the northern California Current. Deep Sea Research Part II: Topical Studies in Oceanography, Volume 52, Issues 1-2, January 2005, Pages 123-143) For more information, see http://cis.whoi.edu/science/bcodmo/dataset.cfm?id=10053&flag=view or http://globec.whoi.edu/jg/info/globec/nep/ccs/birds%7Bdir=globec.whoi.edu/jg/dir/globec/nep/ccs/,data=globec.whoi.edu/jg/serv/globec/nep/ccs/birds.html0%7D Contact: Cynthia T. Tynan, ctynan@whoi.edu, Woods Hole Oceanographic Institution David G. Ainley, dainley@penguinscience.com, H.T. Harvey & Associates OPeNDAP 1 -126.132 -124.03 41.87 44.675 seconds 2000-05-30T00:00:00Z 2000-08-12T00:00:00Z tight OPeNDAPDatasetQueryAndAccess https://coastwatch.pfeg.noaa.gov/erddap/tabledap/erdGlobecBirds OPeNDAP:OPeNDAP OPeNDAP An OPeNDAP service for tabular (sequence) data. Add different extensions (e.g., .html, .das, .dds) to the base URL for different purposes. download GLOBEC NEP Northern California Current Bird Data NH0005, 2000-2000, 0007 2026-03-08 creation GLOBEC https://en.wikipedia.org/wiki/Global_Ocean_Ecosystem_Dynamics information web browser Background Information Background information from the source information originator GLOBEC (GLOBal Ocean ECosystems Dynamics) NEP (Northeast Pacific) Northern California Current Bird Data from R/V New Horizon cruises NH0005 and 0007. As a part of the GLOBEC-Northeast Pacific project, we investigated variation in the abundance of marine birds in the context of biological and physical habitat conditions in the northern portion of the California Current System (CCS) during cruises during the upwelling season 2000. Continuous surveys of seabirds were conducted simultaneously in June (onset of upwelling) and August (mature phase of upwelling). Seabird surveys were conducted continuously during daylight, using a 300-m-wide transect strip. Within that strip, birds were counted that occurred within the 90 degree quadrant off the ship's bow that offered the best observation conditions. Observed counts of seabirds recorded as flying in a steady direction were adjusted for the effect of flight speed and direction relative to that of the ship (Spear et al., 1992; Spear and Ainley, 1997b). The effect of such flux is the most serious bias encountered during seabird surveys at sea (Spear et al., 2005). Known as random directional movement (as opposed to nonrandom directional movement, which occurs when birds are attracted or repelled from the survey vessel), this problem usually results in density overestimation because most species fly faster than survey vessels; densities of birds that fly slower or at a similar speed as the survey vessel (e.g., storm-petrels), or are flying in the same direction, are usually underestimated (Spear et al., 1992) (extracted from: David G. Ainley, Larry B. Spear, Cynthia T. Tynan, John A. Barth, Stephen D. Pierce, R. Glenn Ford and Timothy J. Cowles, 2005. Physical and biological variables affecting seabird distributions during the upwelling season of the northern California Current. Deep Sea Research Part II: Topical Studies in Oceanography, Volume 52, Issues 1-2, January 2005, Pages 123-143) For more information, see http://cis.whoi.edu/science/bcodmo/dataset.cfm?id=10053&flag=view or http://globec.whoi.edu/jg/info/globec/nep/ccs/birds%7Bdir=globec.whoi.edu/jg/dir/globec/nep/ccs/,data=globec.whoi.edu/jg/serv/globec/nep/ccs/birds.html0%7D Contact: Cynthia T. Tynan, ctynan@whoi.edu, Woods Hole Oceanographic Institution David G. Ainley, dainley@penguinscience.com, H.T. Harvey & Associates ERDDAP Subset 1 -126.132 -124.03 41.87 44.675 seconds 2000-05-30T00:00:00Z 2000-08-12T00:00:00Z tight ERDDAP_Subset https://coastwatch.pfeg.noaa.gov/erddap/tabledap/erdGlobecBirds.subset search Subset Web page to facilitate selecting subsets of the dataset download physicalMeasurement trans_no short Transect Number trans_id int ID Number for a Location on the Transect time double Time area float Ocean Area Surveyed in the Transect behav_code byte Behavior Code flight_dir short Flight Direction head_c short Ship Course number byte Unadjusted Number of Birds Recorded number_adj float Adjusted Number of Birds Recorded species String Species wspd short Wind Speed Roy Mendelssohn NOAA NMFS SWFSC Environmental Research Division +1 831-420-3666 110 McAllister Road Santa Cruz CA 95060 USA erd.data@noaa.gov distributor OPeNDAP DAP/2.0 https://coastwatch.pfeg.noaa.gov/erddap/tabledap/erdGlobecBirds.html order Data Subset Form ERDDAP's version of the OPeNDAP .html web page for this dataset. Specify a subset of the dataset and download the data via OPeNDAP or in many different file types. download https://coastwatch.pfeg.noaa.gov/erddap/tabledap/erdGlobecBirds.graph order Make-A-Graph Form ERDDAP's Make-A-Graph .html web page for this dataset. Create an image with a map or graph of a subset of the data. mapDigital This record was created from dataset metadata by ERDDAP Version 2.29.0