noaa-fisheries-nwfsc-data-socrata/cedar-river-n-and-c-isotopes-20002001-9hha-m4km

  • abundance
  • experiments
  • fish passage
  • isotopes
  • juvenile salmonid
  • + 4

Cedar River N and C Isotopes 20002001

Cedar River N and C Isotopes 20002001

InPort Dataset ID: 17861

InPort Entity ID: 36827

These data consist of natural abundance levels of C and N stable isotopes in periphyton, in-stream leaf detritus, leaves of riparian plants, benthic invertebrates, and resident fish collected from multiple locations from the main stem Cedar River, and tributaries including Rock and Taylor creeks. Data were collected in 2000 and 2001 to establish baseline conditions before reintroduction of Pacific salmon in 2003. Data were analyzed at the University of Georgia Stable Isotope Facility.

Columns

NameSocrata field nameColumn name in sgr mountData typeDescription
Fish Weight (G)fish_weight_gramsfish_weight_gramsNumberFish weight in grams using a Mettler field balance of each fish analyzed for stable isotopes.
Fish Length (Mm)fork_length_milimeterfork_length_milimeterNumberFish length (fork for salmonids; total length for sculpin) in millimeters of each fish analyzed for stable isotopes. Fish were measured with handmade measuring board.
Date Collecteddate_samples_collecteddate_samples_collectedCalendar dateDate samples were collected in the field
Delta 13C Per Milper_mil_concentration_c13per_mil_concentration_c13NumberThe concentration in per mil (parts per thousands) of C13 in each sample. Studies examining stable isotopes at or near natural abundance levels are usually reported as delta, a value given in parts per thousand or per mil ("o/oo"). Delta values are not absolute isotope abundances but differences between sample readings and one or another of the widely used natural abundance standards which are considered delta = zero (e.g. air for N, At%15N = 0.3663033; Pee Dee Belemnite for C, At%13C = 1.1112328). Isotope samples with no value and "." are samples with concentrations beyond the standard values so could not be determining.
Delta 15N Per Milper_mil_concentration_n15per_mil_concentration_n15NumberThe concentration in per mil (parts per thousands) of N15 in each sample. Studies examining stable isotopes at or near natural abundance levels are usually reported as delta, a value given in parts per thousand or per mil ("o/oo"). Delta values are not absolute isotope abundances but differences between sample readings and one or another of the widely used natural abundance standards which are considered delta = zero (e.g. air for N, At%15N = 0.3663033; Pee Dee Belemnite for C, At%13C = 1.1112328). Isotope samples with no value and "." are samples with concentrations beyond the standard values so could not be determining.
Sample Weight Gsample_weightsample_weightNumberThe weight in grams of the sample analyzed for isotope.
Weight % C MSconcentration_percent_c_sampleconcentration_percent_c_sampleNumberThe concentration percent of carbon (C) in each sample.
Weight % N MSconcentration_percent_n_sampleconcentration_percent_n_sampleNumberThe concentration percent of nitrogen (N) in each sample.
Taxa Namecommon_name_of_taxa_collectedcommon_name_of_taxa_collectedTextCommon or scientific name of taxa collected for isotope processing.
Reachunique_geomorphic_sectionsunique_geomorphic_sectionsNumberUnique geomorphic units defined by stream gradient, channel confinement, and dominant substrata. For additional details on reach designations see Kiffney, P.M., G. Pess, J. Anderson, P. Faulds, K. Burton and S. Riley. 2009. Changes in fish communities following recolonization of the Cedar River, WA, USA by Pacific salmon after 103 years of local extirpation. River Research and Applications 25: 438-452.
Trophic Leveltrophic_level_of_sampletrophic_level_of_sampleTextTrophic levels of sample including leaves collected from plants (see Wikipedia for latin names) within 5 m of the stream edge, biofilm (slimy coating growing on stream rocks consists of bacteria, algae, and other organic matter), invertebrates (either nymphs or larvae; no adults or pupae) and resident (non-anadromous) fish. Fish caught by angling or electrofishing. Cottidae comprised mostly of torrent (Cottus rhotheus) sculpin with ~ 3 % riffle sculpin (C. gulosa). Rainbow trout = Oncorhynchus mykiss; cutthroat trout = O. clarkii clarkii. Trout fry were too small to be defined as cutthroat or rainbow.
Streamsample_locationssample_locationsTextName of sample location including:CR or main stem Cedar River between the dam and Cedar Falls; TC or Taylor Creek located above the dam; RC or Rock Creek located above the dam.
Yearyear_samples_were_collectedyear_samples_were_collectedNumberCalendar year samples were collected

Upstream Metadata