Assessment of Invasiveness of the Orange Keyhole Sponge Mycale Armata in Kaneohe Bay, Oahu, Hawaii Based on Surveys 2005-2006, Year 2 of Hawaii Coral Reef Initiative (NODC Accession 0033380)

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What does this data set describe?

Title:
Assessment of Invasiveness of the Orange Keyhole Sponge Mycale Armata in Kaneohe Bay, Oahu, Hawaii Based on Surveys 2005-2006, Year 2 of Hawaii Coral Reef Initiative (NODC Accession 0033380)
Abstract:
The Orange Keyhole Sponge, Mycale armata Thiele, was unknown in Hawaii prior to 1996. It was first reported in Pearl Harbor and has been reported in low abundance from a few coral reef locations near harbors, but in Kaneohe Bay it has become a major component of the benthic biota in the south bay in the last 5-10 years. An initial study was conducted in 2004-2005 to determine Mycale armatas distribution, abundance throughout the bay, its growth rates on marked permanent quadrats, and whether mechanical removal would be an effective management technique for its control (Coles and Bolick 2006). Findings in the first year from 190 manta board surveys and 19 quantitative photo-transects on 18 reefs throughout Kaneohe Bay indicated that the sponge had its greatest abundance in the south bay near the Hawaii Institute of Marine Biology (HIMB) pier and Coconut Island. Despite the apparent visual dominance of this conspicuous sponge on many reefs, its maximum coverage measured on any transect in 2004-2005 was 9.2% of the bottom, with a mean of two transects at this site of 6.5%, and sponge was substantially less than coral coverage at all sites. However, measurement of changes in sponge area on ten permanent quadrats photographed quarterly throughout the year indicated a significant average increase in sponge of 13%. Attempts to mechanically remove sponge on ten other permanent quadrats was very time-consuming, requiring up to an equivalent of 22 hr m-2 for removal, and sponge regrew an significant average of 10% during the year following removal.

The study was continued for a second year to determine whether changes in sponge coverage and distribution in the bay could be detected, whether the first year's rates of increase in sponge cover on permanent quadrats would continue, and whether a more effective method of sponge control could be devised. Photo-transects repeated at 11 of the 19 sites from Year 1 indicated increased sponge cover at all sites with significant increases at 7 of the 11 sites, and highest sponge coverage still occurring in the vicinity of Coconut Island. The permanent control photo-quadrats remaining from the first year were re-photographed quarterly and showed a further non-significant increase of 1.7% during Year 2. Re-growth of sponge on the remaining removal quadrats averaged a non-significant increase of 6.3%. Four more photoquadrats were deployed in March 2006 and sponge surfaces on two of these were mechanically removed, followed by injection of the sponge with air delivered by a 10 cm long bone necrosis needle. This treatment resulted in mean reduction from initial values of sponge cover of up to 73% a month later. Four more quadrats were deployed in May and these were treated by air injection alone, which showed little visible effect one month later. Sponge on these quadrats were re-injected with air, and one month later showed mean reductions in sponge of 57%. Some regrowth of sponge occurred on these removal quadrats, resulting in a net average reduction of 42% below pretreatment conditions for the five of the six quadrats that remained by the end of the study.

Overall, the two-year study suggests that growth and spread of Mycale armata on Kaneohe Bay reefs and may now be slowly but steadily extending beyond its area of highest concentration in the south bay. The air injection method may provide a means for reducing the range expansion and impact of the sponge if substantial resources are directed toward controlling this highly invasive species. Before a large-scale control effort is considered, a pilot study of reducing the sponge by air injection should be conducted and results monitored to determine the effectiveness of this means of control in both the area of highest sponge abundance and at the boundary of present sponge occurrence.

Supplemental_Information:
Sensor_Name SCUBA, digital camera Source_Name manual Project_Campaign: Hawaii Coral Reef Initiative Originating_Center Bishop Museum Storage_Medium Excel, PDF, MS Word, JPEG Online_size: 848751 kilobytes

Resource Description: NODC Accession Number 0033380

  1. How might this data set be cited?
    Coles, S.L., Bolick, H., Marchetti, J., Montgomery, A., Survey, Hawaii Biological, Museum, Bishop, and Honolulu, Hawaii, 2007, Assessment of Invasiveness of the Orange Keyhole Sponge Mycale Armata in Kaneohe Bay, Oahu, Hawaii Based on Surveys 2005-2006, Year 2 of Hawaii Coral Reef Initiative (NODC Accession 0033380): Bishop Museum, Honolulu, Hawaii.

    Online Links:

  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -157.852
    East_Bounding_Coordinate: -157.763
    North_Bounding_Coordinate: 21.510
    South_Bounding_Coordinate: 21.412
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
    Beginning_Date: 2005
    Ending_Date: 2006
    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:
    Details are described in ../data/0-data/Photoquadrats/Method Manual.doc (.pdf) ../data/0-data/Photoquadrats/HCRI Report Year2.doc (.pdf)

    Directories: data/0-data files and filenames as received from originator data/1-data renamed or redundant ASCII (CSV) copies of originals as prepared for the archive by NODC

    The original data is primarily provided as MS Excel spreadsheets. Redundant ASCII CSV-format copies were made, with each unique sheet getting a unique file. The name of the file for each sheet in a spreadsheet is

    spreasheetName_sheetName.CSV

    In other words, the name of each sheet is concatenated onto the name of the spreadsheet for each of the CSV files.

    Image files are all given in JPEG format.

    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,Bishop Museum
  3. To whom should users address questions about the data?
    Steve L. Coles
    Scientist
    Bishop Museum, 1525 Bernice St.
    Honolulu, HI
    U.S.A.

    (808) 847-8256 (voice)
    (808) 841-8968 (FAX)
    slcoles@bishopmuseum.org
    Hours_of_Service: 9:00 - 5:00PM, Pacific time
    Contact_Instructions: E-mail/phone/letter

Why was the data set created?

To determine Mycale armata's distribution, abundance throughout the bay, its growth rates on permanent quadrats, and whether mechanical removal would be an effective management technique for its control.

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)
    details at ../data/0-data/Photoquadrats/Method Manual.doc (.pdf) ../data/0-data/Photoquadrats/HCRI Report Year2.doc (.pdf)

    Coles, S.L. and H.Bolick, 2006. Assessment of Invasiveness of the Orange Keyhole Sponge Mycale armata in Kaneohe Bay, Oahu, Hawaii. Final Report, Year 1. The Hawaii Coral Reef Initiative. Contribution No. 2006-02 to the Hawaii Biological Survey.

    Coles, S.L., and Marchetti,J., Bolick,H, Montgomery,A., 2007. Assessment of Invasiveness of the Orange Keyhole Sponge Mycale armata in Kaneohe Bay, Oahu, Hawaii. Final Report, Year 2. The Hawaii Coral Reef Initiative. Contribution No. 2006-02 to the Hawaii Biological Survey. Person who carried out this activity:

    Steve L. Coles
    Scientist
    Bishop Museum, 1525 Bernice St.
    Honolulu, HI
    U.S.A.

    (808) 847-8256 (voice)
    (808) 841-8968 (FAX)
    slcoles@bishopmuseum.org
    Hours_of_Service: 9:00 - 5:00PM, Pacific time
    Contact_Instructions: E-mail/phone/letter
  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?
    the survey was 100% completed
  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/National Oceanographic Data Center
    Attn: Data Access Group, User Services Team
    SSMC-3 Fourth Floor
    Silver Spring, MD
    USA

    301-713-3277 (voice)
    301-713-3302 (FAX)
    services@nodc.noaa.gov
    Hours_of_Service: 8am-5pm, Monday through Friday
  2. What's the catalog number I need to order this data set? Downloadable 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: 06-Jan-2021
Last Reviewed: 03-Aug-2009
Metadata author:
Mr. Patrick C. Caldwell
NOAA/NESDIS/NODC/NCDDC
Hawaii/US Pacific Liaison
1000 Pope Road, MSB 316
Honolulu, Hawaii
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)

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