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This part of DS 781 presents 2-m-resolution data collected by the U.S. Geological Survey in 2007 for the acoustic-backscatter map of the Offshore of Gaviota Map Area, California. The GeoTiff is included in "Backscatter_[USGS07]_OffshoreGaviota.zip," which is accessible from https://doi.org/10.5066/F7TH8JWJ. The acoustic-backscatter map of the Offshore of Gaviota map area in southern California was generated from acoustic-backscatter data collected by the U.S. Geological Survey (USGS) and by Fugro Pelagos Inc. Acoustic mapping was completed between 2007 and 2008 using a combination of 400-kHz Reson 7125, 240-kHz Reson 8101, and 100-kHz Reson 8111 multibeam echosounders, as well as a 234-kHz SEA SWATHplus bathymetric...
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These data are .csv files of tagged sea otter re-sighting locations (henceforth, resights) collected in the field using a combination of VHF radio telemetry and direct observation using high powered (80x) telescopes. Sea otters were tracked by shore or boat-based observers from the date of tagging until the time of radio battery failure, the animal’s death, or the end of the project, whichever comes first. The frequency of re-sighting was opportunistic, depending on logistical factors such as coastal access, but generally ranged from daily to weekly. Location coordinates are reported latitude and longitude as well as X and Y coordinates in the projection/datum California Teale-Albers NAD 1927. The file contains...
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This part of DS 781 presents data for the Seafloor character map of the Offshore of Point Conception Map Area, California. The vector data file is included in "SeafloorCharacter_OffshorePointConception.zip," which is accessible from https://doi.org/10.5066/F7QN64XQ. This raster-format seafloor-character map shows four substrate classes in the Offshore of Point Conception map area, California. The substrate classes mapped in this area have been colored to indicate which of the following California Marine Life Protection Act depth zones and slope classes they belong: Depth Zone 2 (intertidal to 30 m), Depth Zone 3 (30 to 100 m), Depth Zone 4 (100 to 200 m), Depth Zone 5 (deeper than 200 m), Slope Class 1 (0 degrees...
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This part of DS 781 presents data for bathymetry for several seafloor maps of the Offshore of Point Conception Map Area, California. The vector data file is included in "BathymetryHS_OffshorePointConception.zip," which is accessible from https://doi.org/10.5066/F7QN64XQ. Shaded-relief bathymetry of the Offshore of Point Conception map area in southern California was generated largely from acoustic-bathymetry data collected by Fugro Pelagos Inc. Acoustic mapping was completed in 2008 using a combination of 400-kHz Reson 7125, 240-kHz Reson 8101, and 100-kHz Reson 8111 multibeam echosounders. Bathymetric-lidar data was collected in the nearshore area by the U.S. Army Corps of Engineers (USACE) Joint Lidar Bathymetry...
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We collected detailed spatial data on the density and size distribution of intertidal snails as part of a broader effort to understand food webs in California estuaries. The survey area was Carpinteria Salt Marsh, California USA, which comprises 9 Ha tidal channels, 2 Ha salt flats, 17 Ha upland habitat, 6 Ha tidal pans, 52 Ha vegetated marsh, 2 Ha tidal flats. Using nearly 4,000 transects in potential snail habitat, we mapped snails throughout the estuary. Specifically, we systematically placed transects at intervals stratified within targeted habitat types: channels, pans, or marsh (or planar habitat that was mixed marsh and pan). At a quarter of the quadrats, we also estimated snail size-frequency distributions....
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In 30 surveys, we mapped 21,486 birds comprising 88 species “interact with” the intertidal habitat. Each full “survey” represents a unique month-year-tide combination (but not necessarily a unique day). Specifically, for each of 15 months between January 2012 and March 2013 we conducted separate, but temporally adjacent high-tide and low-tide bird surveys (30 in total) throughout the intertidal habitats. Back to back surveys within the same month are not meant to be independent measures of bird abundance and should be averaged to get an idea of bird abundance in a particular month. Birds were counted if they were in the intertidal habitat. We also counted some species, like raptors, if they were perched in adjacent...
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Layered geospatial PDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydrography, and other selected map features. This map is derived from GIS (geospatial information system) data. It represents a repackaging of GIS data in traditional map form, not creation of new information. The geospatial data in this map are from selected National Map data holdings and other government sources.


map background search result map search result map Bird locations by date and species Distribution and mapping of the snail Cerithideopsis (Cerithidea) californica at Carpinteria Salt Marsh, California USA, June to August 2012 Movements of Sea Otters in the Santa Barbara Channel Backscatter [USGS07]--Offshore of Gaviota Map Area, California Seafloor character--Offshore of Point Conception Map Area, California Bathymetry hillshade--Offshore of Point Conception Map Area, California USGS Topo Map Vector Data (Vector) 70159 Gaviota, California 20181004 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 18687 Guadalupe, California 20180918 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 26617 Los Alamos, California 20180919 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 71040 New Cuyama, California 20181004 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 61303 San Miguel Island West, California 20181004 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 76359 Santa Cruz Island B OE S, California 20181004 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 76185 Santa Cruz Island C OE N, California 20181004 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 50200 Zaca Creek, California 20181004 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 2271 Ballinger Canyon, California 20180919 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 44590 Tepusquet Canyon, California 20180919 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 35775 Point Conception, California 20180920 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 35452 Pitas Point, California 20180920 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 43899 Surf, California 20180920 for 7.5 x 7.5 minute Shapefile USGS US Topo 7.5-minute map for Lake Cachuma, CA 2018 Bird locations by date and species Distribution and mapping of the snail Cerithideopsis (Cerithidea) californica at Carpinteria Salt Marsh, California USA, June to August 2012 Backscatter [USGS07]--Offshore of Gaviota Map Area, California USGS Topo Map Vector Data (Vector) 70159 Gaviota, California 20181004 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 18687 Guadalupe, California 20180918 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 26617 Los Alamos, California 20180919 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 71040 New Cuyama, California 20181004 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 61303 San Miguel Island West, California 20181004 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 76359 Santa Cruz Island B OE S, California 20181004 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 76185 Santa Cruz Island C OE N, California 20181004 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 50200 Zaca Creek, California 20181004 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 2271 Ballinger Canyon, California 20180919 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 44590 Tepusquet Canyon, California 20180919 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 35775 Point Conception, California 20180920 for 7.5 x 7.5 minute FileGDB 10.1 USGS Topo Map Vector Data (Vector) 35452 Pitas Point, California 20180920 for 7.5 x 7.5 minute Shapefile USGS Topo Map Vector Data (Vector) 43899 Surf, California 20180920 for 7.5 x 7.5 minute Shapefile USGS US Topo 7.5-minute map for Lake Cachuma, CA 2018 Bathymetry hillshade--Offshore of Point Conception Map Area, California Seafloor character--Offshore of Point Conception Map Area, California Movements of Sea Otters in the Santa Barbara Channel