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This data set contains imagery from the National Agriculture Imagery Program (NAIP). The NAIP program is administered by USDA FSA and has been established to support two main FSA strategic goals centered on agricultural production. These are, increase stewardship of America's natural resources while enhancing the environment, and to ensure commodities are procured and distributed effectively and efficiently to increase food security. The NAIP program supports these goals by acquiring and providing ortho imagery that has been collected during the agricultural growing season in the U.S. The NAIP ortho imagery is tailored to meet FSA requirements and is a fundamental tool used to support FSA farm and conservation programs....
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The data represent hourly temperatures recorded at four permanent subtidal monitoring sites around San Nicolas Island, CA between November 2015 and October 2019. The temperatures were recorded by TidbiT (registered trademark) v2 model UTBI-001 (Onset Computer Corporation, Bourne, Massachusetts) archival temperature loggers attached at the sea floor. The loggers were deployed approximately 10-12 m deep at Nav Fac (12 m) on the north side of the island, at West End Urchin (11 m) on the southwest side, at east Dutch Harbor (11 m) on the south side, and at Daytona Beach (10 m) near the east end of the island.
Composite soil samples from 7 sites on San Nicolas Island were evaluated quantitatively and qualitatively for the presence of cyanobacteria and eukaryotic microalgae. Combined data demonstrated a rich algal flora with 19 cyanobacterial and 19 eukaryotic microalgal genera being identified, for a total of 56 species. Nine new species were identified and described among the cyanobacteria and the eukaryotic microalgae that were isolated: Leibleinia edaphica, Aphanothece maritima, Chroococcidiopsis edaphica, Cyanosarcina atroveneta, Hassallia californica, Hassallia pseudoramosissima, Microchaete terrestre, Palmellopsis californicus, and Pseudotetracystis compactis. Distinct distributional patterns of algal taxa existed...
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The data represent 3 replicate measures of linear distance along 30 fixed transects on permanent subtidal monitoring sites around San Nicolas Island, CA. There were six sites, each of which had five 10-meter by 2-meter band transects on which a suite of kelps and macroinvertebrates was repeatedly counted over almost four decades. Although the transects are each approximately 10 m long, as measured with a meter tape extended between start and end eyebolts set in the sea floor, crevices, boulders, and reef structure provide much more than 20 square meters of surface area. In an effort to quantify the differences in rugosity between the transects, a 13 cm-circumference electronic surveyor’s wheel was used to measure...
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This data set contains imagery from the National Agriculture Imagery Program (NAIP). The NAIP program is administered by USDA FSA and has been established to support two main FSA strategic goals centered on agricultural production. These are, increase stewardship of America's natural resources while enhancing the environment, and to ensure commodities are procured and distributed effectively and efficiently to increase food security. The NAIP program supports these goals by acquiring and providing ortho imagery that has been collected during the agricultural growing season in the U.S. The NAIP ortho imagery is tailored to meet FSA requirements and is a fundamental tool used to support FSA farm and conservation programs....
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These data provide observations of food items observed held by anterior foot of black abalone (presumably for feeding) at 9 different sites in the rocky intertidal zone around San Nicolas Island, California. Observations were made at low tide while censusing the population on permanently marked transects over a 26 year time period. Also included are some associated abalone size data.
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This data release contains 43 chirp sub-bottom profiles that were collected in November of 2014 from the Catalina and Santa Cruz Basins offshore southern California by the U.S. Geological Survey Pacific and Coastal Marine Science Center. Data were collected aboard the University of California’s R/V Robert Gordon Sproul on USGS cruise 2014-645-FA. Chirp profiles were collected to assess earthquake and submarine landslide hazards offshore southern California.
Categories: Data; Types: Citation; Tags: Avalon, Bathymetry and Elevation, CMHRP, Catalina Basin, Catalina Canyon, All tags...
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The Rare Plant Occurrences geodatabase is an element occurrence data system with about 10,000 records of rare plant observations on the 6 northernmost California Channel Islands. It is a live database created with the purpose of bringing together in one space all discoverable historic and current information on the localities of about 180 rare and sensitive plants of the northern Channel Islands, California. The list of taxa was developed from agency databases, supplemented with a 1-day workshop with area botanists in 1993; the list has been updated as new information emerges. Data records range from the late 1880s to 2019, including information from herbarium labels, published and unpublished literature, agency...
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This data release contains 35 multichannel sparker and 24 multichannel minisparker seismic reflection (MCS) profiles that were collected in November of 2014 from the Catalina and Santa Cruz Basins offshore southern California by the U.S. Geological Survey Pacific and Coastal Marine Science Center. Data were collected aboard the University of California’s R/V Robert Gordon Sproul on USGS cruise 2014-645-FA. MCS profiles were collected to assess earthquake and submarine landslide hazards offshore southern California.
Categories: Data; Types: Citation; Tags: Avalon, Bathymetry and Elevation, CMHRP, Catalina Basin, Catalina Canyon, All tags...
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This data release contains 25 multichannel minisparker seismic reflection (MCS) profiles that were collected in February of 2016 from the Catalina Basin offshore southern California by the U.S. Geological Survey Pacific and Coastal Marine Science Center in cooperation with the University of Washington. Data were collected aboard the University of Washington’s R/V Thomas G. Thompson on USGS cruise 2016-616-FA. MCS profiles were collected to image the Catalina and San Clemente fault systems as well as the San Gabriel Canyon and Channel system.
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The data represent total counts of adult California sheephead from six long-term sites at San Nicolas Island, CA between fall 1981 and spring 2018. At each site counts were made by divers swimming five 50-m by 5-m mid-water transects and five 50-m by 2-m benthic transects. The data presented here are the sum of the adult sheephead counted on all transects at a site for each sampling period. The data are from samples made in fall and spring from 1981-2018.
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Four data sets are included here to aid in assessing the influence of substrate complexity on kelp forest ecosystem stability. One data set consists of counts of a suite of kelps and benthic invertebrates on permanent band transects (swaths) at six long-term monitoring sites from 1980-2018. A second data set consists of total counts of adult California sheephead (Semicossyphus pulcher), an important sea urchin predator, on these sites from 1981-2018. The third data set gives an index of the relative substrate rugosity in the form of replicate distances along the bottom profile of each permanent swath. Finally, bottom temperatures recorded from 2015-2019 show the relatively homogenous water mass that encompasses...
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The data represent counts of individuals of a suite of kelp and macroinvertebrate species on fixed 10-meter by 2-meter benthic transects on permanent subtidal monitoring sites around San Nicolas Island between 1980 and 2018. There were six sites, each of which had five 20 square meter band transects. The sites were usually monitored twice per year, most often in October and April. The species list is as follows: Stephanocystis osmundacea (formerly Cystoseira osmundacea), Laminaria spp., Eisenia arborea, Pterygophora californica, Macrocystis pyrifera greater than 1 m tall, Macrocystis pyrifera less than 1 m tall, Juvenile Laminariales (genus uncertain), Mesocentrotus franciscanus (formerly Strongylocentrotus franciscanus),...
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This data release contains 41 chirp sub-bottom profiles that were collected in February of 2016 from the Catalina Basin offshore southern California by the U.S. Geological Survey Pacific and Coastal Marine Science Center in cooperation with the University of Washington. Data were collected aboard the University of Washington’s R/V Thomas G. Thompson on USGS cruise 2016-616-FA. Chirp profiles were collected to image the Catalina and San Clemente fault systems as well as the San Gabriel Canyon system.


    map background search result map search result map Chirp seismic-reflection data of USGS field activity 2014-645-FA collected in the outer Santa Barbara Channel, California, between 2014-11-12 to 2014-11-25 (ver. 2.0, March 2020) Multichannel sparker and minisparker seismic-reflection data of USGS field activity 2014-645-FA collected in the outer Santa Barbara Channel, California, between 2014-11-12 to 2014-11-25 (ver. 2.0, March 2020) FSA 10:1 NAIP Imagery m_3311953_ne_11_h_20160710_20161004 3.75 x 3.75 minute JPEG2000 from The National Map FSA 10:1 NAIP Imagery m_3311953_nw_11_h_20160710_20161004 3.75 x 3.75 minute JPEG2000 from The National Map USGS 1:24000-scale Quadrangle for San Nicolas Island, CA 1956 USGS 1:24000-scale Quadrangle for San Nicolas Island, CA 1943 USGS 1:24000-scale Quadrangle for San Nicolas Island, CA 1956 USGS 1:24000-scale Quadrangle for San Nicolas Island, CA 1956 USGS 1:100000-scale Quadrangle for San Nicolas Island, CA 1993 Multichannel minisparker seismic-reflection data of USGS field activity 2016-616-FA collected in the Catalina Basin offshore southern California in February 2016 Chirp seismic-reflection data of USGS field activity 2016-616-FA collected in the Catalina Basin offshore southern California in February 2016 San Nicolas Island California black abalone feeding observations, 1982-2019 Seasonal and inter-annual distribution and abundance of floating kelp canopies surrounding San Nicolas Island, Calif. 1981-1992 Rare Plant Occurrences Geodatabase for the Northern Channel Islands Benthic Kelp and Invertebrate Counts, California Sheephead Abundance, Substrate Rugosity Data, and Benthic Temperatures from Long-term Kelp Forest Ecosystem Monitoring Sites at San Nicolas Island, California Adult California Sheephead (Semicossyphus pulcher) Counts at Long-term Subtidal Sites at San Nicolas Island, California (1981-2018) Hourly Sea Floor Water Temperatures Recorded at Four Kelp Forest Monitoring Sites at San Nicolas Island, California (2015-2019) Kelp and Invertebrate Counts on Permanent Benthic Transects 1980-2018 at San Nicolas Island, California Linear Distance as a Measure of Substrate Rugosity of Permanent Benthic Transects at San Nicolas Island, California FSA 10:1 NAIP Imagery m_3311953_ne_11_h_20160710_20161004 3.75 x 3.75 minute JPEG2000 from The National Map FSA 10:1 NAIP Imagery m_3311953_nw_11_h_20160710_20161004 3.75 x 3.75 minute JPEG2000 from The National Map USGS 1:24000-scale Quadrangle for San Nicolas Island, CA 1956 USGS 1:24000-scale Quadrangle for San Nicolas Island, CA 1943 USGS 1:24000-scale Quadrangle for San Nicolas Island, CA 1956 USGS 1:24000-scale Quadrangle for San Nicolas Island, CA 1956 Benthic Kelp and Invertebrate Counts, California Sheephead Abundance, Substrate Rugosity Data, and Benthic Temperatures from Long-term Kelp Forest Ecosystem Monitoring Sites at San Nicolas Island, California Adult California Sheephead (Semicossyphus pulcher) Counts at Long-term Subtidal Sites at San Nicolas Island, California (1981-2018) Hourly Sea Floor Water Temperatures Recorded at Four Kelp Forest Monitoring Sites at San Nicolas Island, California (2015-2019) Kelp and Invertebrate Counts on Permanent Benthic Transects 1980-2018 at San Nicolas Island, California Linear Distance as a Measure of Substrate Rugosity of Permanent Benthic Transects at San Nicolas Island, California San Nicolas Island California black abalone feeding observations, 1982-2019 Seasonal and inter-annual distribution and abundance of floating kelp canopies surrounding San Nicolas Island, Calif. 1981-1992 USGS 1:100000-scale Quadrangle for San Nicolas Island, CA 1993 Multichannel minisparker seismic-reflection data of USGS field activity 2016-616-FA collected in the Catalina Basin offshore southern California in February 2016 Chirp seismic-reflection data of USGS field activity 2016-616-FA collected in the Catalina Basin offshore southern California in February 2016 Rare Plant Occurrences Geodatabase for the Northern Channel Islands Chirp seismic-reflection data of USGS field activity 2014-645-FA collected in the outer Santa Barbara Channel, California, between 2014-11-12 to 2014-11-25 (ver. 2.0, March 2020) Multichannel sparker and minisparker seismic-reflection data of USGS field activity 2014-645-FA collected in the outer Santa Barbara Channel, California, between 2014-11-12 to 2014-11-25 (ver. 2.0, March 2020)