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22,549 results for “AND LTER”
SBC LTER: Reef: Kelp Nitrogen uptake in Carpinteria and Mohawk kelp forests, 2016-2017
A large on-going time-series monthly water samples have been taken at 1m, 5 m and 10 m depth from the offshore edge of five kelp forests near Santa Barbara, CA, USA (Arroyo Burro, Arroyo Quemado, Carpinteria, Mohawk, Naples). See dataset: http://sbc.lternet.edu/cgi-bin/showDataset.cgi?docid=knb-lter-sbc.10. Two datasets are presented here. One is a field study conducted in two of the sites (Mohawk or Carpinteria) to test the N uptake of giant kelp (Macrocystis pyrifera) and phytoplankton from May 2016 to October 2017. In situ rates of urea, ammonium and nitrate uptake by giant kelp blades and phytoplankton, which were enclosed together within polyethylene blade bags, from the surface canopy of Mohawk or Carpinteria kelp forests. The second dataset has the results of laboratory experiments for testing the direct uptake of urea by whole blades and natural phytoplankton communities entrained in surface canopy waters.
SBC LTER: OCEAN: Time series of sediment temperatures by depth
This data package includes the results of efforts to resolve the flushing rates of pore waters in sediments adjacent to Mohawk Reef (34, 23.251 N, 119, 43.685 W). Tidbit temperature sensors were attached to a fiberglass pole at set intervals. The pole was then buried in the sediments and left to log temperature at four depths below the seafloor (5, 15, 30, 45 cm) and two above the seafloor (10 cm, 50 cm) every five minutes for three weeks.
SBC LTER: OCEAN: Sediment porewater ammonium and urea concentrations
This data set present the results of efforts to characterize the concentrations of ammonium and (selectively) urea in pore waters of permeable, sandy sediments on the inner continental shelf of the Santa Barbara Channel, including those adjacent to major kelp beds. Samples sites included Arroyo Burro, Mission Creek, Refugio and Mohawk. A second data file include depth profiles of ammonium and urea concentrations in the water column above each sediment sampling site, which were used to discern the strength of the vertical gradients of ammonium and urea concentrations between the surficial sediments and the water column.
SBC LTER: Reef: Master species list
These data are the master species list for all the biological surveys conducted in kelp forest communities in the Santa Barbara Channel. In addition to the taxonomic information for the taxa, there are aphiaID (a taxonomic ID from the WORMs database, see methods) and species’ minimum and maximum size ranges.
SBC LTER: data summary from UNOLS cruises in the Santa Barbara Channel beetween 2001-2006
This data package includes a summary list of data that were collected from the RV Pt. Sur. Cruises which took place from 2001 to 2006 in the Santa Barbara Channel, California, USA. There are total of 16 cruises and 3-4 times per year with approximately 7 days in length. Three data types are included in the summary sheet: 1. CTD and rosette profile bottle data; 2. Towed CTD scanning data; and 3. Meteorological, sea surface, and ADCP data. The data can be viewed and downloaded using the DOIs listed in the summary sheet. The detailed metadata is included in each of the data packages.
SBC LTER: Reef: Coefficients for estimating biomass from body size or percent cover for kelp forest species
These data provide coefficients to estimate the biomass of macroalgae, invertebrates and fish from field measurements of body size or percent cover. We developed quantitative relationships between mass and length or mass and percent cover, and conversion factors for transforming wet mass into dry mass, shell free and decalcified dry mass, and ash-free dry mass for taxa of benthic macroalgae and macroinvertebrates common to giant kelp forests in southern California. We also compiled literature-based relationships between mass and total length for reef fish common to giant kelp forests in southern California.
SBC LTER: Sea urchin foraging rates on giant kelp
These data describe the foraging rates of two sea urchin species (Strongylocentrotus purpuratus and Mesocentrotus franciscanus) on giant kelp (Macrocystis pyrifera) in laboratory mesocosms. Data are contained in two tables: 1) a data file describing the foraging rates of sea urchins as a function of urchin biomass where biomass was varied by manipulating the number of urchins in a foraging trial, and 2) a data file describing the foraging rates of sea urchins as a function of urchin biomass where biomass was varied by manipulating the size of urchins in a foraging trial.
SBC LTER: BEACH: Talitrid amphipod (Megalorchestia spp.) mesocosm and pitfall trapping for surface activity on spring and neap tides
These data describe the surface activity of talitrid amphipod species (Megalorchestia spp.), and unidentified juveniles, on a spring tide and a neap tide during July and August 2017. The data tables include (1) the mean number and standard deviation of surface active individuals of each species each hour for a 24 hour period on a spring tide and on a neap tide in mesocosms, and (2) the count of each species and unidentified juveniles from pitfall trap samples collected every 2 hours on 4 replicate transects on a spring tide and on a neap tide. This dataset is to support the journal article: Emery, KA, VR Kramer, NK Schooler, KM Michaud, JR Madden, DM Hubbard, RJ Miller, JE Dugan. 2021. Habitat partitioning by mobile intertidal invertebrates of sandy beaches shifts with the tides. Ecosphere.
SBC LTER: BEACH: Talitrid amphipod (Megalorchestia spp.) mean positions on spring and neap tides
These data describe the position of four burrowed talitrid amphipod species (Megalorchestia spp.) and unidentified juveniles surveyed on a spring tide and a neap tide in August 2016. The data table includes the counts of each species, including unidentified juveniles, from each core sample (1-30) on each transect (A-F). The distance of the sample from the bluff (0 m) is also given. The dataset is to support the journal article: Emery, KA, VR Kramer, NK Schooler, KM Michaud, JR Madden, DM Hubbard, RJ Miller, JE Dugan. 2021. Habitat partitioning by mobile intertidal invertebrates of sandy beaches shifts with the tides. Ecosphere.
SBC LTER: Theme 1B: Lobster trap data from marine reserves
These data describe catches of California spiny lobster (Panuliris interruptus) in the Santa Barbara Channel. Lobster count and weight were collected from Santa Cruz Island between 2006 and 2018. Data are contained in two tables: 1) Catch per trap across all sites 2) the weight in lobster caught in traps from all sites. This is a data package to support manuscript: Hunter S. Lenihan, Sean P. Fitzgerald, Daniel C. Reed, Jennifer K.K. Hofmeister, and Adrian C. Stier. Increasing spillover enhances southern California spiny lobster catch along marine reserve borders. Ecosphere.
SBC LTER: Land: Catchment characteristics along the southern coast of Santa Barbara County in Geodatabase
This data package include GIS layers stored in Geodatabase. The layers describe the characteristics of the catchments along the southern coast of Santa Barbara County used in the article Aguilera, R., & Melack, J. M. (2018). Relationships among nutrient and sediment fluxes, hydrological variability, fire, and land cover in coastal California catchments. Journal of Geophysical Research: Biogeosciences, 123, 2568– 2589. https://doi.org/10.1029/2017JG004119. Catchment characteristics include: Land cover and land use based on hyperspectral imagery obtained by the Airborne Visible/Infrared Imaging Spectrometer; number of inhabitants based on population counts by block from the 2010 census spatial database; relief and slopes estimated from a 30 m digital elevation model; geological substrata obtained from geologic maps of California; soil textural types based on the Soil Survey Geographic data, and fire perimeters for the Gaviota, Gap, Tea and Jesusita fires.
SBC LTER: Ocean: High-resolution Landsat 8 chlorophyll imagery of the Santa Barbara Channel
This is a timeseries of Landsat 8 images of the Santa Barbara Channel, processed for both chlorophyll and particulate backscattering. These data are at a particularly high spatial resolution (30 m), making them useful for analysis of submesoscale biophysical and biogeochemical interactions in the SBC, and for comparison with high-resolution modeling results. Data are contained in netcdf files, and there are 88 images in total, spanning the deployment of Landsat 8 (2013 - present). MATLAB scripts are available to load the netcdf files, flag the bad pixels, interpolate over the flagged pixels, and plot images, in the matlab folder. In addition, Landsat8_chl_imagery.zip contains jpegs of all of the images. A recommended workflow to users would be looking through all the jpegs to decide what images you want, and then downloading those specific netcdf files and using the matlab scripts and accompanying functions to process them. Our hope is that concurrent study of submesoscale variability in phytoplankton biomass via both submesoscale-resolving model studies and high-resolution satellite imagery may reveal further insights into the importance of submesoscale biophysical variability to regional and global biogeochemical processes.
SBC LTER: Beach: Distribution of terrestrial organic material in intertidal and nearshore marine sediment due to debris flow response efforts
These data describe the distribution and processing of terrestrial organic material observed in the Santa Barbara Channel (Goleta Bay) during the spring of 2018. Specifically, beach, slough, and marine sediments were sampled during and after the debris disposal event that took place between January and February 2018 following the Thomas Fire and the subsequent Montecito Debris Flow. Data are contained in one table, including organic carbon, carbon isotope, lignin phenol, and pyrogenic carbon measurements analyzed from sediment cores collected at different depths and locations in the nearshore region.
SBC LTER : Reef: Dissolved nitrogen fluxes from kelp forest sediment
Permeable marine sediments are biogeochemically active and may contribute dissolved nutrients to support primary production in coastal regions. This study examined the potential of permeable marine sediments near giant kelp forests in the Santa Barbara Channel, California to serve as a source of dissolved nutrients to the overlying water column to support the observed growth of kelp during summer months when nitrate availability is low. Over the course of three summers (2017-2019) sediment cores were collected at three nearshore kelp forest sites (ABUR, MICR, GOLB), and flow-through bioreactor incubations were conducted to measure nutrient fluxes. Data are contained in two tables: 1) changes in nutrient concentrations measured over the course of both control (seawater only) and experimental (seawater + sediment) incubations (µM hr-1) and 2) net fluxes of nutrients from sediments (µmol m-2 hr-1). This data package is to support manuscript “Lowman H., Hirsch M., Brezinkski M., and Melack J. Examining the Potential of Sandy Marine Sediments Surrounding Giant Kelp Forests to Provide Recycled Nutrients for Growth. Journal of Coastal Research.”
SBC LTER : Reef: Macrocystis pyrifera frond morphology at Mohawk Reef
These data describe the morphology of actively growing, surface-canopy fronds of the giant kelp Macrocystis pyrifera collected from the interior and edge of the kelp forest at Mohawk Reef near Santa Barbara, CA from May 2005 to April 2006. Included are values for the length, wet mass, stipe diameter, stipe mass, number of blades, and total blade mass of the midwater and canopy portion of each frond. These data were used by Stewart et al. (2009) to differences in growth, morphology and tissue C and N of M. pyrifera within and at the outer edge of a giant kelp forest.
SBC LTER: Reef: The size-dependent functional response of lobster foraging on purple urchin
These data summarize the results of a size-dependent functional response experiment in which California spiny lobster (Panulirus interruptus) foraged on purple urchins (Strongylocentrotus purpuratus). Lobster of different sizes foraged on one of three different size classes of urchins at 4-6 different densities of urchin. Data is used to support manuscript: DiFiore, B.P. and A.C. Stier. 2023. Variation in body size drives spatial and temporal variation in lobster-urchin interaction strength. Journal of Animal Ecology
SBC LTER: Ocean: Currents and Biogeochemistry: Moored CTD and ADCP data from Purisima Mooring (PUR), 1999-2016
ADCP (Currents), CTD (Hydrography) and Optics data (Fluorescence, Beam Attenuation and Volume Scattering Function) were collected at La Purisima (site ID: PUR), north of Point Conception. Data have been interpolated to a 20 minute interval. ADCP data are binned at a 1.0 meter interval, measured as height from the bottom to a maximum of 16 bins. All bins may not be filled, and in some cases, data from bins technically above the surface are included. VSF data are available at angles, 100, 125 and 150 degrees. CTD parameters include Pressure, Temperature, Conductivity, Salinity, Density and Fluorescence. The CTD array is located approximately 4.5 meters from the surface, and there are additional temperature thermistors near the CTD array, at the bottom, and mid way between these two.
SBC LTER: Reef: Macrocystis pyrifera CHN content (carbon, hydrogen, nitrogen), ongoing since 2002
The purpose of monthly kelp CHN sampling is to track the carbon, hydrogen, and nitrogen concentrations in Macrocystis pyrifera tissue at SBC LTER sites over time. A total of fifteen M. pyrifera blades are collected at each of three reef sites once a month. Blades are selected approxiamtely two meters from the growing end of several different plants. Core samples of the blades are processed and run through an Organic elemental analyzer with a combustion method. See Methods for more information.
SBC LTER: Land: Hydrology: Daily precipitation from Santa Barbara County Flood Control (Public Works Department)
These daily total precipitation data represent legacy data obtained by SBC LTER from the the Santa Barbara County Flood Control District for several coastal watersheds draining into the Santa Barbara Channel (California, USA). Starting in 2001, SBC also began archive high-frequency data from County stations with active data loggers which are available in other SBC data packages. These data were collected in accordance with current industry standards. The data are contained in 3 tables, for stations with active data loggers and tipping gauges, active stations with other types of gauges, and inactive stations. Only data collected with tipping gauges and data loggers can be interpolated to to the resolution required by SBC's research objectives, and so only this data table will be updated (annually, at the end of the water year).
SBC LTER: Land: Hydrology: Stream discharge and associated parameters at Arroyo Burro Creek, Cliff Drive (AB00)
Stream Discharge and water temperature were collected with a Solinst Model 3001 LT Levelogger at Arroyo Burro Creek at Cliff Drive, AB00 in the Santa Barbara coastal area (site ID: AB00). Data are reported hourly. Stage values were converted to discharge using a rating curve developed with stream channel cross-sections, roughness estimates and the HEC-RAS model.
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