Resource-Fish surveys using timed-swims at 14 coral reef ecosystem sites off West Hawaii and 39 sites off Maui in 2005 (NODC Accession 0002709)

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Frequently anticipated questions:


What does this data set describe?

Title:
Resource-Fish surveys using timed-swims at 14 coral reef ecosystem sites off West Hawaii and 39 sites off Maui in 2005 (NODC Accession 0002709)
Abstract:
Effective management of coral reef ecosystems depends on adequate data on the status and trends of key ecosystem components. In spite of which, previous coral reef monitoring programs in the Main Hawaiian Islands (MHI) have been fragmentary and uncoordinated, with little or no overlap among programs in terms of survey site locations or habitat. The primary goal of this project was to develop and optimize an integrated reef-scale and ecosystem-scale monitoring approach for use by the state of Hawaii's aquatic resource management agency, the Division of Aquatic Resources (DAR), within the MHI. A combination of methods already applied by DAR with new ones developed and trialed by this project now form the basis of a standard 'method toolkit' for use by DAR monitoring staff. The key output of this project, an integrated statewide coral reef monitoring scheme, has been adopted by DAR, who have committed to implementing it, beginning in 2006.

Two new monitoring approaches: (i) 'Resource-Fish' surveys (targeting the large and mobile fishes which are primary targets of recreational and commercial food fisheries); and (ii) 'Benthic Characterization' (intended to be a medium-large scale survey approach capable of relatively easily generating benthic information suitable for improved understanding of fish distribution and community structure, and for detecting gross change in benthos) were developed and field trialed at sites in West Hawaii.

Extended fish trials of an 'integrated monitoring' approach, comprising both existing small-scale and the newly developed medium-large scale approaches were conducted at 14 sites in West Hawaii (Big Island) (each site surveyed 4 times for fish, once for 'Benthic Characterization'). Additionally, 'Resource-Fish' surveys using the newly developed methodology were conducted at 39 sites in Maui, and data from those surveys compared with an alternative approach focusing on the same fish groups which had been previously utilized at Maui sites (but not elsewhere in the state). 'Benthic Characterization' surveys were conducted at 14 sites in West Hawaii.

This dataset includes only the 'Resource-Fish' surveys. The 'Benthic Characterization' sets will be provided to the NOAA posterity archive at a later date. NODC Accession Number 0002627 contains the same data in this dataset for West Hawaii. This new dataset adds the Maui 'Resource-Fish' data.

Supplemental_Information:
Sensor_Name SCUBA Source_Name manual Project_Campaign: Hawaii Coral Reef Initiative, Integrated Monitoring of coral reefs of West Hawaii: Developing a whole-reef and ecosystem approach for the Main Hawaiian Islands Originating_Center Division of Aquatic Resources, Division of Lands and Natural Resources, State of Hawaii Storage_Medium MS Excel and MS Word Online_size: 5816 kbytes
  1. How should this data set be cited?

    Williams, Dr. Ivor , Division of Aquatic Resources, Division of Lands and Natural Resources, and Hawaii, State of , Unpublished material, Resource-Fish surveys using timed-swims at 14 coral reef ecosystem sites off West Hawaii and 39 sites off Maui in 2005 (NODC Accession 0002709).

    Online Links:

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -156.96275
    East_Bounding_Coordinate: -155.849
    North_Bounding_Coordinate: 21.01876
    South_Bounding_Coordinate: 19.167

  3. What does it look like?

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

    Beginning_Date: 21-Apr-2005
    Ending_Date: 30-Nov-2005
    Currentness_Reference: ground condition

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

  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?

  7. How does the data set describe geographic features?

    Entity_and_Attribute_Overview:
    1. Directory data/original These are the files in the naming convention and format as received from the originator.

    Filename comment a) TimedSwim Methods for PatCaldwel incl MAUIl.doc description b) Williams TimedSwim Data 2005 incl Maui.xls data

    2. Directory data/nodc These files have had filename standardization.

    a) above was renamed TimedSwimMauiWHawFshRsrc.doc. It was dumped into a redundant PDF (TimedSwimMauiWHawFshRsrc.pdf) and ASCII Text (TimedSwimMauiWHawFshRsrc.txt). Note in the later, the tables become difficult to understand. Figures and Tables from this document were saved to separate files as

    Filename comment MauiLocations.jpg map WHawLocations.jpg map TimedSwimMauiWHawFshRsrc_Table01.jpg Resource Fish TimedSwimMauiWHawFshRsrc_Table02.jpg Sample Log Sheet TimedSwimMauiWHawFshRsrc_Table03.jpg Big Island names/coordinates TimedSwimMauiWHawFshRsrc_Table04.jpg Maui names/coordinates

    Original data file received in MS Excel, b) above, was renamed to TimedSwimMauiWHawFshRsrc.xls. Then, each sheet of this spreadsheet was dumped into a redundant Comma-Separated Version (CSV) ASCII files,

    TimedSwimMauiWHawFshRsrc_BI_Data.csv TimedSwimMauiWHawFshRsrc_Maui_Data.csv

    The files are self-descriptive.

    Entity_and_Attribute_Detail_Citation: none


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?

    Hawaii Coral Reef Initiative, Division of Aquatic Resources, Division of Lands and Natural Resources, State of Hawaii

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

    Dr. Ivor Williams
    Division of Aquatic Resources, Division of Lands and Natural Resources, State of Hawaii
    Marine biologist
    74-380 B Kealakehe Pkwy
    Kailua-Kona, Hawaii 96740
    USA

    808-983-3727 (voice)
    ivor@hawaii.edu


Why was the data set created?

The chief objective of the program was to develop a comprehensive and integrated coral reef monitoring program for the Main Hawaii Islands, based on a common toolkit of robust and efficient methods.


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)
    ../../data/nodc/TimedSwimMauiWHawFshRsrc.doc or ../../data/nodc/TimedSwimMauiWHawFshRsrc.pdf or ../../data/nodc/TimedSwimMauiWHawFshRsrc.txt

    Overview and Objectives: Pairs of divers conduct 5 or 7 minute timed swims recording the number of all medium-large (>15cm TL on Big Island; >10cm TL on Maui) "resource fishes" (Table 1). Divers aim to cover moderate to large areas while looking as far ahead as possible so that diver-observers can focus on the large, mobile and sometimes skittish fishes which are the principal targets of commercial and recreational food fisheries.

    Detail: Divers work in pairs, starting from a fixed central point in the survey site (e.g. central pins of WHAP H formation). Divers swim outward from the starting point following the depth contour and remaining where possible within a contiguous stretch of habitat. Divers should aim to move steadily, and adjust their own speeds to prevailing currents so that total distance covered is around 120-150m per 5-minute survey. In West Hawaii, most survey sites are aligned roughly N-S, so one pair of divers swim approximately north and one pair south. Each diver records the size and number of "resource fishes" with total length larger than 15cm within a 5m-wide swath centered on themselves. One diver in each pair will either tow a surface float with a tracking GPS, or deploy a buoy at the end of the swim, so that distance covered per survey can also be calculated (and therefore counts can be analyzed on a per-time or per-distance basis). Data from a pair of divers will always be pooled prior to analysis and therefore, divers should strive not to double count fishes (e.g. a fish moving across the field of vision of both divers should only be counted one of the pair, normally the diver from which side the fish started). Fish sizes are to be recorded in 5cm-slot size categories: D = 15-20 cm; E = 20-25 cm; and fishes larger than 25cm recorded to nearest 5 cm.

    In West Hawaii, transects are laid out in an H pattern and are labeled from A to D: transects A and C run parallel, approximately 10m apart and heading northwards from the central pin following the depth contour. B and D transects are also 10m apart and parallel, but run southwards. Mid-depth of each site is around 40ft.

    Maui sites are aligned parallel to shore- sites are either shallow (~10ft) or deep (~35ft).

    Person who carried out this activity:

    Dr. Ivor Williams
    Division of Aquatic Resources, Division of Lands and Natural Resources, State of Hawaii
    Marine biologist
    74-380 B Kealakehe Pkwy
    Kailua-Kona, Hawaii 96740
    USA

    808-983-3727 (voice)
    ivor@hawaii.edu

  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?

  2. How accurate are the geographic locations?

  3. How accurate are the heights or depths?

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

    none

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

    see lineage, process step


How can someone get a copy of the data set?

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

Access_Constraints: None
Use_Constraints: Dataset credit required

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

    NOAA/NESDIS/NODC/NCDDC (National Coastal Data Development Center)
    National Coastal Data Development Center, Building 1100
    Stennis Space Center, MS 39529

    866-732-2382 (voice)
    228-688-2968 (FAX)
    ncddcgetdata@noaa.gov

    Hours_of_Service: 8am-5pm, Monday through Friday
  2. What's the catalog number I need to order this data set?

    Offline Data

  3. What legal disclaimers am I supposed to read?

    NOAA makes no warranty regarding these data, expressed or implied, nor does the fact of distribution constitute such a warranty. NOAA, NESDIS, NODC and NCDDC cannot assume liability for any damages caused by any errors or omissions in these data, nor as a result of the failure of these data to function on a particular system.

  4. How can I download or order the data?


Who wrote the metadata?

Dates:
Last modified: 20-Dec-2012
Last Reviewed: 17-Dec-2008
Metadata author:
Mr. Patrick C. Caldwell
NOAA/NESDIS/NODC/NCDDC
Hawaii/US Pacific Liaison
1000 Pope Road, MSB 316
Honolulu, Hawaii 96822
USA

(808)-956-4105 (voice)
(808) 956-2352 (FAX)
caldwell@hawaii.edu

Hours_of_Service: 8 AM to 5 PM weekdays
Contact_Instructions: check services@nodc.noaa.gov if not available
Metadata standard:
FGDC Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)


Generated by mp version 2.9.13 on Tue Apr 22 10:39:49 2014