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LTE-MP-LAC-elevationmeans

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					Plum Island Ecosystems LTER DATABASE
DATASET ID:                      LTE-MP-LAC-elevationmeans.02
Metacat Package ID               knb-lter-pie.125.2
Year Released to Public          2006
Distribution URL for file        http://ecosystems.mbl.edu/PIE/data/MAR//LTE-MP-LAC-elevationmeans.html
DATASET TITLE:                   Marsh surface elevation data at a Spartina alterniflora-
                                 dominated salt marsh at Law's Point, Rowley River, Plum
                                 Island Ecosystem (PIE) LTER, MA.

INVESTIGATOR INFORMATION : Investigator 1                                                 Investigator 2
                  First Name     Jim                                                      Karen
                  Last Name      Morris                                                   Sundberg
                Address line 1   Dept of Biological Sciences                              Baruch Marine Field Laboratory
                Address line 2                                                            University of SC
                Address line 3   University of SC                                         PO Box 1630
                          City   Columbia                                                 Georgetown
                        State    SC                                                       SC
                     Zip Code    29208                                                    29442
                       Country   USA                                                      USA


OTHERS:                          Rob Daoust

DATA FILE INFORMATION:
               Data File URL     http://ecosystems.mbl.edu/PIE/data/MAR/data/LTE-MP-LAC-elevationmeans.dat
            Data File Name       LTE-MP-LAC-elevationmeans
            Beginning Date       01-Jun-1999
                   End Date      31-Oct-2008
  Number of Data Records         51
   Other Files to Reference
                             LTE-MP-LPC-elevationmeans; LTE-MP-NAC-elevationmeans
         Availability Status type 1
Quality Control Information
  Maintenance Description Collections occur every month from May through October.
                             Database is updated once annually, usually in the winter.
                             Study and data collection are ongoing as of Jan 2009.
           Log of Changes: Version 01; new data and metadata
                             Version 02; new data and metadata


RESEARCH LOCATION:                                   Site 1                                               Site 2
   Geographic Description Plum Island Ecosystems (PIE) LTER site, northeastern,
                          Massachusetts; Law's Point, Rowley River Marsh site.
Location Bounding Box
West Bounding Coordinate
East Bounding Coordinate
North Bounding Coordinate
South Bounding Coordinate
OR if single point location
                      Latitude 42.7317
                    Longitude -70.8425
                     Elevation


TAXONOMIC COVERAGE:
     Taxonomic Protocols
       Organisms studied Spartina alterniflora                                             Example: Spartina; Spartina patens; Carex aquatilis var. aquatilis; Carex at

KEYWORD INFORMATION

                      LTER, PIE, Plum Island Ecosystems, Massachusetts, Rowley
                      River, disturbance, organic matter, estuary, salt marsh,
                      Spartina alterniflora, elevation, surface elevation table (SET),
           KEYWORDS: sedimentation erosion table (SET), Northeast United States
     KeywordThesaurus

ABSTRACT:
                           A Surface Elevation Table (SET) is used to measure changes in the elevation of the marsh platform at a Spartina alterniflora
                           dominated marsh on the Rowley River in the Plum Island Ecosystem (PIE) LTER site, MA.




METHODS:                    Sampling Description:
                            Triplicate SET benchmarks are permanently installed on the marsh platform in a Spartina alterniflora-dominated marsh at Law's Po
                            Rowley River, Plum Island Ecosystem (PIE) LTER site, MA. Each SET benchmark is positioned such that elevation readings can b
                            taken in 3 control subplots. At each subplot, the SET sampling arm is leveled, 9 brass pins are lowered to the marsh surface
                            height of each pin above the sampling plate is measured and recorded. Surface elevations are measured monthly from May throu
                            October.

                            Numerical Processing:
                            Data are reported as the mean change in elevation and standard error of the 3 replicate plots (n=81) from time zero. Statist
                            computed using SAS (SAS System for Windows; release 8.02; SAS Institute, Inc;
                            Cary, NC).
Sampling and/or Lab Protocols
              Protocol Title
     URL of online Protocol
            OR
   Protocol Document




VARIABLE DESCRIPTIONS:
Variable Name               Variable Description                               Units
site                        name of sampling station
year                        year
month                       month
elev change                 mean change in elevation                           centimeter
stderr                      standard error of the mean                         centimeter
comments                    Information pertaining to individual data points
Investigator 3




            Site 3
patens; Carex aquatilis var. aquatilis; Carex atlantica ssp. atlantica




atform at a Spartina alterniflora-




       -dominated marsh at Law's Point,
ned such that elevation readings can b e
re lowered to the marsh surface , and the
re measured monthly from May throu gh



 (n=81) from time zero. Statist ics were
                                                                       Missing Value   Missing Value Code
Measurement Scale   Code Information   Number Type   DateTime Format
                                                                       Code            Explanation
nominal
datetime                                             yyyy
datetime                                             mm
interval                               real                            .               .=not measured
interval                               real                            .               .=not measured
nominal
Do Not Modify. This is the lists for the drop-downs.
         Number Unit
MeasurementScaleType Name

datetime   integer   ampere
interval   natural   amperePerMeter
nominal    real      amperePerSquareMeter
ordinal    whole     angstrom
ratio                atmosphere
bar
calorie
celsius
centigram
centimeter
centimeterPerYear
centimetersPerSecond
centimolesChargePerKilogram
centisecond
coulomb
cubicCentimetersPerCubicCentimeters
cubicFeetPerSecond
cubicMeter
cubicMeterPerKilogram
cubicMetersPerSecond
cubicMicrometersPerGram
decibar
decigram
decimeter
decisecond
degree
dimensionless
disintegrationsPerMinute
farad
gram
gramsPer0.04SquareMeter
gramsPerCentimeterSquaredPerSecond
gramsPerCubicCentimeter
gramsPerGram
gramsPerHectarePerDay
gramsPerLiter
gramsPerLiterPerDay
gramsPerMeterSquaredPerDay
gramsPerMeterSquaredPerYear
gramsPerMilliliter
gramsPerNumber
gramsPerSquareMeter
gramsPerYear
gray
hectare
hectoPascal
henry
hertz
hour
joule
joulesPerCentimeterSquaredPerDay
joulesPerCentimeterSquaredPerHour
kelvin
kilogram
kilogramPerCubicMeter
kilogramsPerHectare
kilogramsPerHectarePerYear
kilogramsPerMeterSquaredPerSecond
kilogramsPerMeterSquaredPerYear
kilogramsPerSecond
kilogramsPerSquareMeter
kilohertz
kiloliter
kilometer
kilometersPerHour
kilopascal
kilosecond
kilovolt
kilowatt
kilowattPerMeterSquared
liter
litersPerHectare
litersPerSecond
litersPerSquareMeter
lumen
lux
megagram
megahertz
megameter
megapascal
megasecond
megavolt
megawatt
meter
metersPerDay
metersPerGram
metersPerSecond
metersPerSecondSquared
metersSquaredPerDay
metersSquaredPerSecond
microCuriePerMicroMole
microEinsteinsPerSquareMeter
microEinsteinsPerSquareMeterPerSecond
microequivalentsPerLiter
microgram
microgramsPerCubicCentimeter
microgramsPerGram
microgramsPerLiter
microgramsPerMilliliter
microliter
micrometer
microMolesCarbonPerMicroMolePhoton
microMolesPerKilogram
microMolesPerLiter
microMolesPerSquareMeterPerMinute
microMolesPerSquareMeterPerSecond
micron
microsecond
microsiemensPerCentimeter
millibar
milligram
milliGramPerKilogram
milliGramPerSegment
milligramsPerCubicMeter
milligramsPerLiter
milliGramsPerMilliLiter
milligramsPerMillimeter
milligramsPerSquareMeter
milligramsPerSquareMeterPerDay
millihertz
milliliter
milliliterPerLiter
millimeter
millimetersPerNumber
millimetersPerSecond
millimetersPerSegment
millimolesPerGram
millimolesPerMole
millimolesPerSquareMeterPerHour
millisecond
millivolt
milliwatt
minute
molality
molarity
mole
molePerCubicMeter
molesPerGram
molesPerKilogram
molesPerKilogramPerSecond
molesPerMeterSqaurePerDay
nanogram
nanometer
nanomolesPerGramPerSecond
nanosecond
newton
nominalDay
nominalYear
number
numberPerGram
numberPerKilometerSquared
numberPerMeterCubed
numberPerMeterSquared
numberPerMilliliter
numberPerSquareCentimeterPerHour
ohm
ohmMeter
partsPerMillion
partsPerThousand
pascal
percent
picoMolesPerLiter
picoMolesPerLiterPerHour
PSU
radian
second
serialDateNumberYear0000
siemen
siemensPerMeter
squareCentimeters
squareCentimetersPer0.04SquareMeter
squareCentimetersPerGram
squareKilometers
squareMeter
squareMeterPerKilogram
squareMeterPerNumber
squareMeterPerSquareMeter
squareMillimeters
volt
watt
    Cell: A2
Comment: The dataset identifier is a unique label for the data set that
          is constructed from the file name without the file extension,
          followed by a version number, e.g. LTE-MP-LPA-biomass.01. If there are
          any changes made to the metadata or data files the version
           number is incremented and a note is added in the Log of Changes section.


    Cell: A3
Comment: A unique number assigned by the Information Manager
          for use with Metacat server. You DO NOT need to enter anything.

    Cell: A4
Comment: Year of public release of the data. Filled out by the Information Manager.
           You DO NOT need to enter anything.

    Cell: A5
Comment: This is the URL for the metadata file. It is filled in by the Information Manager. You DO NOT need to enter anything.



    Cell: A6
Comment: A title for the dataset. It should be less then 200 characters
          long and should describe the data collected, geographic context,
          research site, and time frame (what, where, and when).


    Cell: A8
Comment: List here the name and address of the person,
          most knowledgeable about the data set.
          If the dataset has more than 1 investigator,
          please enter the information for them in the column to the right.


    Cell: A20
Comment: PIs, RAs or Techs who were also involved in the data collection or compilation. Separate names with a comma.

    Cell: A22
Comment: The format of the data file should always be ASCII comma delimited with a .DAT extension. The first line of the data file should be a comma delimited list
          of the variable names. A spreadsheet or database file may also be included, but it must have the first row with the variable names and only data below
          the names. There can not be any other stray data on the sheet.


      Cell: A23
Comment: The URL for the data file that this metadata describes. This will be fill in by the Information Manager. You Do NOT need to fill in.

    Cell: A24
Comment: File naming convention is as follows: Each data file will carry the same name as the meta-data file, with the exception of the extension. Data files must be
          comma delimited ascii (.dat extension). An additional file can be Microsoft Excel file (.xls). Documentation meta-data files will be generated in this Excel
          data template and converted later to EML and HTML. The files will be named starting with a three letter acronym of the main research theme of the data
          set (see table below). A second 2 or 3 letter acronym is appended that describes the research site (see table below). A descriptor is then appended that
          briefly describes the dataset. For instance, dissolved oxygen transect data from the Parker River is named "EST-PR-O2", and tidal-creek nutrient data
          from the long-term experiments is named "LTE-TC-NUT". The data-manager may edit file names as appropriate.

            These same naming methods apply for the PIE-LTER site names. All site names will have the same three and two letter descriptors, and an appended
           descriptor. For instance, the Middle Bridge YSI monitoring station is named "MON-PR-MBYSI". This descriptor will either be an abbreviation describing
           the station or a river kilometer distance that describes its location along one of the rivers in the Plum Island ecosystem. Please use the River Kilometer
           Image (http://ecosystems.mbl.edu/PIE/data/protocol/piestati.jpg) as an aid in determining names for sampling locations. The image is color-coded to
           show which two-letter site descriptor code should be used in station naming. The convention that has been established for determining locations on a
           river based upon river kilometer is to set the mouth of Plum Island Sound as 0.0 km. River kilometer markings are clearly labeled in this image as is the
           0.0 km starting point in the Sound.

           Major Research Theme Acronyms

           WAT Watershed                    MAR Marsh                                                     EST Water Column
           BEN Benthos                       HTL Higher Trophic Levels                                   MOD Models
           LTE Long-Term Experiments       STP Short-Term Projects and Experiments                  GIS Geographic Information Systems
           MON Monitoring                   PHY Estuarine physics                                       GPS GPS projects

           Some Site Descriptors

           PR Parker River                             RO Rowley River                                           IP Ipswich River
           MI Mill River                               EG Egypt Rive                                              MU Muddy River
           EA Eagle River                               SO Plum Island Sound                                     VA Various sites
           TC Tidal Creeks                              MD Marsh Detritus Removal                              MF Marsh Fertilization
           MP Plot-level Marsh Fertilization        GD Governor Dummer Academy                              EX External Datasets
           LPC Law's Pt, S. patens, Control site     LAC Law's Pt., S. alterniflora, Control site           NAC North Inlet, S. alterniflora, Control site
           NGI Goat Island                             NOL Oyster Landing                                       NIN North Inlet
           LPA Law's Pt, S. alterniflora site        LPP Law's Pt, S. patens site                             ORT Upper Parker River, Typha site
           SET Sediment Elevation Table

    Cell: A25
Comment: The date that data collection began for the dataset.

    Cell: A26
Comment: The ending date of data collection.
    Cell: A27
Comment: Number of Data Records field:
          Total number of Data Records found in the dataset. This is typically an integer value.

    Cell: A28
Comment: Any other files that are releated to this data file.
          If not part of the PIE LTER database then list full reference to the file.


    Cell: A29
Comment: Type of Availability Status
          Type 1: data available within 2-3 years with few or no restrictions.
          Type 2: in exceptional cases, data sets are available only with
           permission from the PIE LTER investigator. This status is
          rare and needs written justification.


    Cell: A30
Comment: A description of the Quality Control procedures that relate to the dataset.

    Cell: A31
Comment: A description of the maintenance of this data resource.
          This includes information about the frequency of update,
          and whether there is ongoing data collection.

    Cell: A32
Comment: The log should list a date and the reason for any changes.
          This log should be filled in whenever there is a change in the dataset.
          Insert more rows when needed.

    Cell: A36
Comment: The name of the sampling location, latitude and longitude if you have it.
          Remember to include not only the name, but, when necessary, details and descriptions of the sampling location. Examples would be: specific areas of
          the watershed, estuary, reaches of rivers, sections of marsh or long term experimental sites. Map coordinates, nearby landmarks, or any other details
          that may help someone reference that particular location.

            If the location bounding box is known, enter the coordinates in decimal degees below. If the location is known by a single latitude and longitude then
            enter the coordinates in the latitude and longitude cells below.



    Cell: A37
Comment: The name of the sampling location, latitude and longitude if you have it.
          Remember to include not only the name, but, when necessary, details
           and descriptions of the sampling location. map coordinates, nearby landmarks, or any other details that may help someone reference that particular
           location.


    Cell: A39
Comment: Dataset Sampling Sites West Bounding Coordinate:
          Dataset Sampling Sites West Bounding Coordinate:
          If the dataset's individual sampling site is to be described by a bounding box as
          opposed to a simple text description, this is where the west bounding coordinate
          is entered. The coordinate should be given in decimal degrees. Decimal fractions
          of a degree may be expressed to the precision desired. Longitudes west of the
          meridian shall be designated by minus sign (-) preceding the
           three digits designating degrees (i.e. -70.22).


    Cell: A40
Comment: Dataset Sampling Sites East Bounding Coordinate:
          If the dataset sampling site is to be described by a bounding box as
          opposed to a simple text description, this is where the east bounding
           coordinate is entered. The coordinate should be given in decimal
          degrees. Decimal fractions of a degree may be expressed to the precision
          desired. Longitudes west of the meridian shall be designated by minus sign
          (-) preceding the three digits designating degrees (i.e. -70.75).


    Cell: A41
Comment: Dataset Sampling Sites North Bounding Coordinate:
          If the dataset sampling site is to be described by a bounding box as opposed
          to a simple text description, this is where the north bounding coordinate is
          entered. The coordinate should be given in decimal degrees. Decimal fractions
          of a degree may be expressed to the precision desired. Latitudes north of the
          Equator shall be designated by plus sign (+) preceding the three digits
           designating degrees (e.g. +42.83).




    Cell: A42
Comment: Dataset Sampling Sites South Bounding Coordinate:
          If the dataset sampling site is to be described by a bounding box as opposed
          to a simple text description, this is where the south bounding coordinate is
           entered. Latitudes north of the Equator shall be designated by plus sign (+)
           preceding the three digits designating degrees (+42.5).
    Cell: A44
Comment: Dataset Sampling Sites Latitude field:
          If the dataset Sampling site is to be described by an individual point
          as opposed to a simple text description or bounding box, this is where
          the point(s) latitude coordinate(s) is entered. The coordinate should be
          given in decimal degrees. Decimal fractions of a degree may be expressed
          to the precision desired. Latitudes north of the Equator shall be designated
          by plus sign (+) preceding the three digits designating degrees.


    Cell: A45
Comment: Dataset Sampling Sites Longitude field:
          If the dataset Sampling Site is to be described by an individual point
          as opposed to a simple text description or bounding box, this is where
           the point(s) longitude coordinate(s) is entered. The coordinate should
            be given in decimal degrees. Decimal fractions of a degree may be
          expressed to the precision desired. Longitudes west of the meridian
          shall be designated by minus sign (-) preceding the three digits designating degrees
          .

    Cell: A50
Comment:
          Describe the general procedure of how the taxonomy was determined (keys used, etc.),
           should include a general textual description of all flora/fauna in the study (scope), as
          well as how finely grained the taxonomy is broken down to – for example “family” or
          “genus and species.”

    Cell: A51
Comment: Genus and /or species names for all organisms relevant to the study.
          Separate the organisms with a semicolon or comma. For subspecies and variety use ssp. and var. For example
          Carex aquatilis var. aquatilis; Carex atlantica ssp. atlantica
          Note: It is good practice to check the taxonomic name with a source such as Integrated Taxonomic Information System (www.itis.gov)

    Cell: A54
Comment: Words that may be helpful in cross-referencing or cataloging the data. These should be in lower case format, unless the word is a proper name.
          Please separated keywords by a comma. LTER, PIE, Plum Island Ecosystems, Massachusetts and any of the river names (Ipswich, Parker or Rowley)
          should also be included if appropriate.

    Cell: A55
Comment: Dataset KeywordThesaurus field:
          OPTIONAL: This field provides the name of the
          official keyword thesaurus from which keyword was derived.
          The keyword thesauri are usually discipline specific.
    Cell: A57
Comment: Short, accurate explanation of the data set. Be informative since this is
          used as the description in the web page index. Double click on the box
          to write or paste the information.


    Cell: A65
Comment: The description of methods and research site should be fairly detailed and
          include any literature references (including author, title, journal and page
          numbers) pertaining to the methods.

           Include a Notes: section if appropriate. Click on the box and paste or type
           the needed information.

    Cell: A109
Comment: Enter a title of the protocols used.
          Then enter below the URL for online protocol documents or enter the protocol document in the textbox .
          Be as complete as possible including the version used.
          Note any deviation from the protocols in the methods section.

    Cell: A110
Comment: List the URL to an online protocol document.

    Cell: A112
Comment: Describe the protocol used. Be as complete as possible. Include any references and deviations used from references.

    Cell: A123
Comment: This section describes the variables in the data set. Please be as complete as necessary.

    Cell: A124
Comment: Add rows as needed with a separated row for each variable name. The variables Date and Comments must be
          included in every data file.

           Date should be in the format DD-MMM-YYYY (i.e. 01-Jun-1988). This format avoids confusion between Canadian
           and USA forms of dates.

           Comments must be the last column in the file, and includes any additional information about individual data points.
           All Comments for a data point must be entered on a single line, which can be no longer than 250 characters.

           Variables for time in Hours are to be in 24 hour format (not AM or PM) and based on Eastern Standard Time, not Eastern Daylight Savings Time. Entries
           should be 4 places, hours and minutes, preferably without any punctuation (examples 0458 or 2133). Individual PIs need to be responsible for making
           these time corrections.

           Missing data shall be designated by a Missing Data Value. The value used should be noted , i.e. BLANK, period, N/A. The value -9999 should be used
            with caution since it can be a real value in rare cases.

    Cell: B124
Comment: Variable Description should be a brief explanation of what the Variable name represents.

    Cell: C124
Comment: Units field: If variable is a number, e.g. raito or interval,
          use drop-down list to choose a unit listed. If not listed
          then enter the units using a format similar to the other
          units.

    Cell: D124
Comment: Measurement Scale field: Enter either nominal, ordinal, interval, ratio, datetime.

            Knowing how data are measured and recorded is important for proper statistical analysis.

            1. Nominal Data
            Named categories, a list of coded values, or plain text descriptions. There is no ordering
            between the values, e.g. male/female, evergreen/deciduous. It makes no sense to state
            that evergreen > deciduous.

            2. Ordinal Data
            Named categories but are in order with reference to one another. However there is no
            constant distance scale between them, e. g. low, medium, high. An ordinal scale only lets
            you interpret gross order but not the relative positional distances

            3. Interval Data
            Ordered, constant scale, but no natural zero. Differences make sense, but ratios do not
             (e.g. temperature in Celsius or Fahrenheit where 30°-20°=20°-10°, but a temperature
             of 30° is not twice as warm as one of 15°.

            4. Ratio Data
            Ordered, constant scale, natural zero,e.g. height, weight, age, length.

            5. Datetime
            Measures of time.


    Cell: E124
Comment: Codes Definitions:
          For any variables that are coded, list the values/definitions
          for codes used. Format the list as a vertical-line separated list, e.g.:
          MAT=Moist Acidic Tussock | MNT = Moist Non-acidic Tussock.
    Cell: F124
Comment: Number Type: If variable is a number, e.g. ratio or interval, then select from the drop-down list.

           real: numbers that contain fractional or decimal elements
           integers: non-fractional positive or negative numbers
           whole: numbers of positive integers
           natural: whole numbers except zero.

    Cell: G124
Comment: Date Time format field: Enter the datetime format
          (ex. DD-MMM-YY) for variables that are dates and or time.

    Cell: H124
Comment: Indicate the code used for missing values, e.g. blanks or -99999

    Cell: I124
Comment: MissingValueCode Explanation:
          Short explanation of the missing value code,
           -9999 = not measured; -8888 = data lost.
site   year          month        elev changestderr      comments
LAC           1999            6         0.00        0.17
LAC           1999            7         0.68        0.19
LAC           1999            8         0.76        0.18
LAC           1999            9         0.81        0.15
LAC           1999           10         0.63        0.17
LAC           2000            5         1.31        0.14
LAC           2000            6         1.08        0.17
LAC           2000            7         1.04        0.21
LAC           2000            8         0.59        0.25
LAC           2000            9         1.46        0.21
LAC           2000           10         0.84        0.24
LAC           2001            5         0.85        0.21
LAC           2001            6         0.49        0.27
LAC           2001            7         1.02        0.25
LAC           2001            8         0.49        0.29
LAC           2001            9         0.81        0.36
LAC           2001           10         0.34        0.29
LAC           2002            5         0.80        0.19
LAC           2002            7         1.22        0.20
LAC           2002            9         1.05        0.24
LAC           2002           11         2.32        0.19
LAC           2003            5         2.32        0.15
LAC           2003            6         2.74        0.18
LAC           2003            7         3.00        0.14
LAC           2003            8         2.75        0.15
LAC           2003            9         2.70        0.17
LAC           2003           10         2.98        0.18
LAC           2004            5         2.95        0.13
LAC           2004            7         3.37        0.12
LAC           2004            8         3.43        0.10
LAC           2004            9         3.17        0.11
LAC           2004           10         3.49        0.11
LAC           2005            5         4.87        0.10
LAC           2005            6         3.46        0.13
LAC           2005            7         4.51        0.11
LAC           2005            8         4.38        0.11
LAC           2005            9         4.63        0.11
LAC           2006            4         4.48        0.10
LAC           2006            6         4.54        0.12
LAC           2006            7         4.26        0.11
LAC           2006            8         4.07        0.13
LAC           2006           10         4.35        0.13
LAC           2007            4         5.13        0.11
LAC           2007            6         5.01        0.14
LAC           2007            7         5.57        0.13
LAC           2007            8         5.53        0.12
LAC           2007           10         5.01        0.13
LAC           2008            6         5.96        0.10
LAC           2008            7         5.07        0.12
LAC           2008            9         5.92        0.14
LAC           2008           10         6.02        0.14

				
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