23 datasets found
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Federal
Rare plant occurrences geodatabase for the northern Channel Islands
Department of the Interior —
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... -
Federal
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)
Department of the Interior —
This data release contains 35 multichannel sparker and 24 multichannel minisparker seismic reflection (MCS) profiles that were collected in November of 2014 from the... -
Federal
Merged multibeam bathymetry--Catalina Basin and northern Gulf of Santa Catalina, southern California
Department of the Interior —
This part of the data release includes 10-m resolution merged multibeam-bathymetry data of Catalina Basin and northern Gulf of Santa Catalina. The data are presented... -
Federal
Subtidal ecosystems at San Nicolas Island, California
Department of the Interior —
The monitoring program at San Nicolas Island (SNI) was conceived in anticipation of the potential reintroduction of southern sea otters to the island. Subtidal... -
Federal
San Nicolas Island benthic quadrat cover 1980-2019
Department of the Interior —
These data represent estimated percent cover of macroalgae, invertebrates, and exposed substrate within fixed quadrats. Benthic cover data were collected in 1 square... -
Federal
Seasonal and inter-annual distribution and abundance of floating kelp canopies surrounding San Nicolas Island, Calif. 1981-1992
Department of the Interior —
Map provides spatial data on the ___location and extent of floating canopies of the giant kelp, Macrocystis pyrifera, in the area surrounding San Nicolas Island, Calif. -
Federal
San Nicolas Island California black abalone feeding observations, 1982-2019
Department of the Interior —
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... -
Federal
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
Department of the Interior —
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... -
Federal
Feeding observations of intertidal black abalone at monitored sites around San Nicolas Island, California and local distribution of Macrocystis pyrifera based on surface canopy maps
Department of the Interior —
The data set includes feeding observations of black abalone (Haliotis cracherodii) at long-term intertidal monitoring sites around San Nicolas Island, California from... -
Federal
Adult California sheephead (Semicossyphus pulcher) counts at long-term subtidal sites at San Nicolas Island, California (1981-2018)
Department of the Interior —
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... -
Federal
Hourly sea floor water temperatures recorded at four kelp forest monitoring sites at San Nicolas Island, California (2015-2019)
Department of the Interior —
The data represent hourly temperatures recorded at four permanent subtidal monitoring sites around San Nicolas Island, CA between November 2015 and October 2019. The... -
Federal
Tool-use frequency by individual sea otters in California
Department of the Interior —
Sea otters are well-known tool users, employing objects such as rocks or shells to break open invertebrate prey. We used a series of generalized linear mixed effect... -
Federal
Multichannel minisparker seismic-reflection data of USGS field activity 2016-616-FA collected in the Catalina Basin offshore southern California in February 2016
Department of the Interior —
This data release contains 25 multichannel minisparker seismic reflection (MCS) profiles that were collected in February of 2016 from the Catalina Basin offshore... -
Federal
Chirp seismic-reflection data of USGS field activity 2016-616-FA collected in the Catalina Basin offshore southern California in February 2016
Department of the Interior —
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.... -
Federal
Kelp and invertebrate counts on permanent benthic transects 1980-2018 at San Nicolas Island, California
Department of the Interior —
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... -
Federal
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)
Department of the Interior —
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... -
Federal
Sea otter counts near subtidal monitoring sites around San Nicolas Island, California 1980-2017
Department of the Interior —
The data consist of counts of sea otters in each year from 1980 to 2017 that are within 2 kilometers of the ___location of the 6 original subtidal ecosystem monitoring... -
Federal
San Nicolas Island benthic transect densities 1980-2019
Department of the Interior —
These data represent density per square meter of individuals of a suite of kelp and macroinvertebrate species on fixed 10-meter by 2-meter benthic transects on... -
Federal
San Nicolas Island Macrocystis holdfast diameters and stipe counts 1980-2019
Department of the Interior —
These data represent holdfast diameters of giant kelp (Macrocystis pyrifera) that were greater than one meter tall and were on fixed 10-meter by 2-meter benthic... -
Federal
San Nicolas Island fish transect counts 1981-2019
Department of the Interior —
These data represent counts of fin fish made by divers on fixed transects on permanent subtidal monitoring sites around San Nicolas Island between 1981 and 2019....
23 datasets found