CRED REA Algal Assessments at Guguan, Marianas Archipelago in 2007

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Frequently anticipated questions:


What does this data set describe?

Title:
CRED REA Algal Assessments at Guguan, Marianas Archipelago in 2007
Abstract:
Twelve quadrats were sampled along 2 consecutively-placed, 25m transect lines, as part of Rapid Ecological Assessments, conducted at 3 sites at Guguan in the Marianas Archipelago from 25 May - 09 June 2007, aboard the NOAA ship Hi'ialakai, during the Reef Assessment and Monitoring Program (RAMP) Cruise HI0703. Raw survey data included genus presence and relative abundance, and voucher specimens. Detailed taxonomic analyses of voucher specimens are presented.
Supplemental_Information:
Maximum depth was 13 meters. Algae observed: Common name Scientific Name Family Order Class Division Kingdom Algae Caulerpa Caulerpaceae Bryopsidales Ulvophyceae Chlorophyta Plantae Algae Halimeda Halimedaceae Bryopsidales Ulvophyceae Chlorophyta Plantae Algae Bryopsis Bryopsidaceae Bryopsidales Ulvophyceae Chlorophyta Plantae Algae Tydemania Udoteaceae Bryopsidales Ulvophyceae Chlorophyta Plantae Algae Neomeris Dasycladaceae Dasycladales Ulvophyceae Chlorophyta Plantae Algae Boodlea Boodleaceae Siphonocladales Ulvophyceae Chlorophyta Plantae Algae Ventricaria Siphonocladaceae Siphonocladales Ulvophyceae Chlorophyta Plantae Algae Dictyota Dictyotaceae Dictyotales Phaeophyceae Phaeophyta Protista Algae Lobophora Dictyotaceae Dictyotales Phaeophyceae Phaeophyta Protista Algae Tolypiocladia Rhodomelaceae Ceramiales Florideophyceae Rhodophyta Protista Crustose coralline algae Corallinaceae Corallinalles Florideophyceae Rhodophyta Protista Algae Amphiroa Corallinaceae Corallinalles Florideophyceae Rhodophyta Protista Algae Jania Corallinaceae Corallinales Florideophyceae Rhodophyta Protista Algae Peyssonnelia Peyssonneliaceae Gigartinales Florideophyceae Rhodophyta Protista Algae Portieria Rhizophyllidaceae Gigartinales Florideophyceae Rhodophyta Protista Blue green algae cyanobacteria Monera Turf algae
  1. How should this data set be cited?

    Coral Reef Ecosystem Division (CRED), Pacific Islands Fisheries Science Center (PIFSC), National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA), 20090608, CRED REA Algal Assessments at Guguan, Marianas Archipelago in 2007.

    Online Links:

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: 145.82385
    East_Bounding_Coordinate: 145.861631
    North_Bounding_Coordinate: 17.327049
    South_Bounding_Coordinate: 17.291153

  3. What does it look like?

  4. Does the data set describe conditions during a particular time period?

    Beginning_Date: 08-Jun-2007
    Ending_Date: 08-Jun-2007
    Currentness_Reference: Ground condition

  5. What is the general form of this data set?

    Geospatial_Data_Presentation_Form: spreadsheet

  6. How does the data set represent geographic features?

    1. How are geographic features stored in the data set?

    2. What coordinate system is used to represent geographic features?

      Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 0.0001. Longitudes are given to the nearest 0.0001. Latitude and longitude values are specified in Decimal Degrees.

      The horizontal datum used is World Geodetic System 1984 (WGS84).
      The ellipsoid used is Geodetic Reference System 80 (GRS80).
      The semi-major axis of the ellipsoid used is 6378137.
      The flattening of the ellipsoid used is 1/298.2572236.

      Vertical_Coordinate_System_Definition:
      Depth_System_Definition:
      Depth_Datum_Name: Local surface
      Depth_Resolution: 1
      Depth_Distance_Units: meters
      Depth_Encoding_Method: Explicit Depth Coordinate Included with Horizontal Coordinates

  7. How does the data set describe geographic features?


Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)

  2. Who also contributed to the data set?

    Tom Schils, Edson Limes, Coral Reef Ecosystem Division (CRED), Pacific Island Fisheries Sciences Center, National Marine Fisheries Service, NOAA

  3. To whom should users address questions about the data?

    Coral Reef Ecosystem Division (CRED), Pacific Islands Fisheries Science Center (PIFSC), National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA)
    NOAA IRC
    Honolulu, HI 96818
    USA

    808 725-5360 (voice)
    808 725-5429 (FAX)
    nmfs.pic.credinfo@noaa.gov

    Contact_Instructions: e-mail preferred


Why was the data set created?

Part of a long-term monitoring program at biennial intervals in which corals, algae, fish, and other macroinvertebrates are co-sampled along the same set of transect lines.


How was the data set created?

  1. From what previous works were the data drawn?

  2. How were the data generated, processed, and modified?

    Date: Unknown (process 1 of 1)
    A modified version of the Preskitt method was used to collect qualitative and quantitative algal data (Preskitt et al. 2004, Pacific Science). One diver recorded the presence and relative abundance of algal genera inside each of the twelve 0.18 m2 quadrats and collected voucher specimens, while the second diver photographed each quadrat. An additional random swim was performed by the divers to collect qualitative samples.

  3. What similar or related data should the user be aware of?


How reliable are the data; what problems remain in the data set?

  1. How well have the observations been checked?

    Algal genera were identified in the field by trained phycologists.

  2. How accurate are the geographic locations?

    GPS Unit

  3. How accurate are the heights or depths?

    Dive computer and SCUBA depth gauge

  4. Where are the gaps in the data? What is missing?

    The survey sites were selected to be representative of the dominant habitats at this reef system.

  5. How consistent are the relationships among the observations, including topology?

    The same methods of data collection were used at each of the sites surveyed at this location, and were conducted by the same scientist.


How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?

Access_Constraints: Data are available two years following data collection date
Use_Constraints:
Please cite CRED when using the data. Coral Reef Ecosystem Division, Pacific Islands Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration

  1. Who distributes the data set? (Distributor 1 of 1)

    Coral Reef Ecosystem Division (CRED), Pacific Islands Fisheries Science Center (PIFSC), National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA)
    Attn: CRED Data Management Team
    NOAA IRC
    Honolulu, HI 96818
    USA

    808 725-5360 (voice)
    808 725-5429 (FAX)
    nmfs.pic.credinfo@noaa.gov

    Contact_Instructions: e-mail preferred
  2. What's the catalog number I need to order this data set?

    Offline Data

  3. What legal disclaimers am I supposed to read?

    While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.

  4. How can I download or order the data?

  5. Is there some other way to get the data?

    Contact CRED data management team for information

  6. What hardware or software do I need in order to use the data set?

    Contact CRED data management team for information


Who wrote the metadata?

Dates:
Last modified: 29-Sep-2014
Last Reviewed: 17-Feb-2009
Metadata author:
Coral Reef Ecosystem Division (CRED), Pacific Islands Fisheries Science Center (PIFSC), National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA)
NOAA IRC
Honolulu, HI 96818
USA

808 725-5360 (voice)
808 725-5429 (FAX)
nmfs.pic.credinfo@noaa.gov

Contact_Instructions: e-mail preferred
Metadata standard:
Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)


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