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254 results for “SBC LTER”
SBC LTER: Kelp blade characteristics to support turnover dynamics of giant kelp, Macrocystis pyrifera in the Santa Barbara Channel
These data describe the age-specific changes in the size and related traits of giant kelp (Macrocystis pyrifera) blades in the Santa Barbara Channel (Isla Vista Reef) during the spring and summer of 2012-2013. Data are contained in three tables: 1) a time series of change in blade size with age due to growth and senescence for blades growing at different depths and locations in the kelp forest, 2) physical traits of blades (biomass density, nitrogen, chlorophyll a) of different ages collected at different depths and locations in the kelp forest, and 3) photosynthetic performance (Pmax, alpha) of blades of different ages collected at different depths and locations in the kelp forest. These data were used to test whether spatial variation in the turnover dynamics of giant kelp blades could be could be explained by leaf life span theory developed for higher plants. The data were also used in a mathematical model of frond growth and senescence to investigate the relative and absolute magnitude of blade senescence in a kelp forest, and to examine how these losses were affected by light availability. Analyses using these data were published in Rodriguez, G. E. 2014. Turnover dynamics of the giant kelp, Macrocystis pyrifera. Ph.D., University of California, Santa Barbara. ProQuest, UMI Dissertations Publishing, 2014. 3682967.
SBC LTER: Pore water constituents and residence times (Radon activity) from Santa Barbara beaches, 2012-2013
Constituents of beach pore water and parameters for calculating residence times are reported for two beaches in the Santa Barbara area, Isla Vista Beach and East Campus Beach, from July 2012 to June 2013. This dataset reports beach pore water concentrations of ammonium and nitrate, total dissolved Nitrogen and Carbon, particulate Nitrogen and Carbon, Radon, salinity, conductance, Oxygen and water temperature. Residence time ("Tau") can be calculated from Radon-222 activities in nearshore seawater, in pore water and at equilibrium, which are presented in a second table (also available in published paper). Results from these data were reported in: Goodridge, B. M. and J. M. Melack. 2014. Temporal evolution and variability of dissolved inorganic nitrogen in beach pore water revealed using radon residence times. Environmental Science and Technology, 48: 14211-14218. DOI:10.1021/es504017j
SBC LTER Darwin Core Archive: Kelp Forest Reef Fish Abundance
These data describe the abundance of reef fish as part of the Santa Barbara Coastal LTER program (SBC LTER) to track long-term patterns in kelp forest reef species abundance and diversity. The study began in 2000 in the Santa Barbara Channel, California, USA, and the time series is ongoing and updated approximately annually. Abundances of all taxa of resident kelp forest fish encountered along permanent transects are recorded at nine reef sites located along the mainland coast of the Santa Barbara Channel and at two sites on the north side of Santa Cruz Island. These sites reflect several oceanographic regimes in the channel and vary in distance from sources of terrestrial runoff. In these surveys, fish were counted in either a 40x2m benthic quadrat, or in the water parcel 0-2m off the bottom over the same area. This dataset is formatted as a Darwin Core Archive (DwC-A, occurrence core). All taxa are counted (using an open species list), and abundances are zero-filled for each taxon not encountered. This is a derived data product and less-processed data may be available. See http://sbc.lternet.edu for more information and source data, which may include additional measurements, and http://sbc.marinebon.edu for processing notes.
SBC LTER: Land: NCDC stations in Santa Barbara Coastal LTER study area
These data describe several surface stations sampled by the National Climatic Data Center (NCDC, http://ncdc.noaa.gov). Sampled parameters may include: daily precipitation, minimum daily temperature,maximum daily temperature, mean daily dew-point temperature, mean daily station pressure, mean daily resultant wind direction, and mean daily resultant wind speed. These stations were selected to represent the climate of the SBC LTER study area based on station elevation and spatial distribution within the study region. The stations provide a relatively long period of record (beginning in 1927), and are still active. Data are available using the NCDC link.
SBC LTER: Spatial definitions of giant kelp (Macrocystis pyrifera) patches in southern and central California
These data describe the spatial definitions of patches of giant kelp, Macrocystis pyrifera, in central and southern California, USA, using a 27-year time series of giant kelp canopy biomass from Landsat 5 Thematic Mapper satellite imagery (1984-2011). Giant kelp patches were delineated using a spatial synchrony-based method that avoids the consolidation of adjacent, independently fluctuating local populations into "megapatches". The method uses a network theory modularity approach to optimally cluster Landsat pixels into patches based on suitable habitat area (i.e., all areas containing giant kelp, 1984-2011) and the spatial synchrony of canopy biomass. These data were described in Cavanaugh, K. C., D. A. Siegel, P. T. Raimondi, and F. A. Alberto. 2014. Patch definition in metapopulation analysis: a graph theory approach to solve the mega-patch problem. Ecology 95:316-328. doi:10.1890/13-0221.1
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.
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