Benthic faunal sampling adjacent to the Barbers Point ocean outfall, Oahu, Hawaii, 1986-2010 (NCEI Accession 9900098)
Benthic fauna in the vicinity of the Barbers Point (Honouliuli) ocean outfall were sampled from 1986-2010. To assess the environmental quality, sediment grain size and sediment chemistry were measured. To identify the fauna, mollusk species and non-mollusk species sitings were tabulated. Stations were located both within and on the boundary of the zone of initial dilution (ZID) and at distances of 1.2 to 2 km from the ZID boundary. In summary, the response patterns of benthic fauna near the Barbers Point ocean outfall showed little or no indication of a strong influence by the diffuser effluent.
Seven stations previously established along the approximate diffuser isobath (61 m) were surveyed. In 1990 survey station names were changed from those used in the 1986 survey (Nelson et al. 1987). Survey stations (1986 station names are in parentheses) and their locations are as follows:
Station HB1 (A) Approximately 3.5 km east of the zone of initial dilution (ZID) boundary to evaluate effects far-field and beyond the ZID
Station HB2 (B) On the northeast ZID boundary
Station HB3 (C) On the southeast ZID boundary
Station HB4 (D) On the southwest ZID boundary
Station HZ (Z) Within the ZID to evaluate diffuser effects
Station HB6 (E) Approximately 0.5 km southwest of the ZID boundary as a near-field reference station
Station HB7 (F) Approximately 3.5 km southwest of the ZID boundary as a far-field reference station
SAMPLING PERIODS:
September 1986
February 1990
July 1991
February 1992
June 1993
June 1994
January 1995
January 1996
January-February 1997
January 1998
April 1999
February-March 2000
January 2001
January 2002
January 2003
June 2004
February 2005
February 2006
July 2007
June 2008
March 2009
June 2010
missing years: 1987-89
METHODOLOGY:
The sampling methodology used in this study generally followed the recommendations of Swartz (1978) and US EPA guidelines (EPA 1987a, 1987b), hereafter referred to as EPA procedures.
A modified 0.16-m2 van Veen grab sampler deployed from a stern-mounted A-frame on the research vessel Noi I Kai was used to obtain bottom samples at all seven stations. Penetration of the sampler was adequate for all replicates. The minimum penetration depth for all grabs was 8 cm and the maximum was 15 cm.
Five van Veen grabs were taken at each station. A subsample 7.6 cm in diameter by 5 cm deep was taken from each grab sample for infaunal analysis and a subsample 4.8 cm in diameter by 5 cm deep for mollusk analysis. Subsampling was necessary because the epifauna and infauna in the area are known to be both small and abundant and processing of the entire sample would be impractical. Replicated grab samples at each station, rather than replicated subsamples from one grab sample, were used to provide information on intrastation variability. All six nonmollusk subcores were processed on a 0.5-mm screen.
Samples for geochemical analyses (total organic carbon (TOC), oxidation-reduction potential (ORP), sediment oil and grease (O&G), total Kjeldahl nitrogen (TKN), and grain size) were obtained from the grabs from which the biological subcores were taken. Each replicate van Veen grab contained more than enough sediment for both purposes (methods HI0020117). Three subsamples 7.6 cm in diameter by 5 cm deep (one from each of three different grab samples) were taken from all stations. The top 2 cm of sediment of each subsample were used for geochemical analysis. Samples for TOC and sediment O&G analysis were put in screw-cap jars, placed on ice, and taken to the laboratory for analysis. Sediment analyses of sediment grain size, ORP, TKN, and O&G followed EPA procedures. Analysis of TOC was carried out by PACE, Inc. Laboratory (Southern California).
Seven stations previously established along the approximate diffuser isobath (61 m) were surveyed. In 1990 survey station names were changed from those used in the 1986 survey (Nelson et al. 1987). Survey stations (1986 station names are in parentheses) and their locations are as follows:
Station HB1 (A) Approximately 3.5 km east of the zone of initial dilution (ZID) boundary to evaluate effects far-field and beyond the ZID
Station HB2 (B) On the northeast ZID boundary
Station HB3 (C) On the southeast ZID boundary
Station HB4 (D) On the southwest ZID boundary
Station HZ (Z) Within the ZID to evaluate diffuser effects
Station HB6 (E) Approximately 0.5 km southwest of the ZID boundary as a near-field reference station
Station HB7 (F) Approximately 3.5 km southwest of the ZID boundary as a far-field reference station
SAMPLING PERIODS:
September 1986
February 1990
July 1991
February 1992
June 1993
June 1994
January 1995
January 1996
January-February 1997
January 1998
April 1999
February-March 2000
January 2001
January 2002
January 2003
June 2004
February 2005
February 2006
July 2007
June 2008
March 2009
June 2010
missing years: 1987-89
METHODOLOGY:
The sampling methodology used in this study generally followed the recommendations of Swartz (1978) and US EPA guidelines (EPA 1987a, 1987b), hereafter referred to as EPA procedures.
A modified 0.16-m2 van Veen grab sampler deployed from a stern-mounted A-frame on the research vessel Noi I Kai was used to obtain bottom samples at all seven stations. Penetration of the sampler was adequate for all replicates. The minimum penetration depth for all grabs was 8 cm and the maximum was 15 cm.
Five van Veen grabs were taken at each station. A subsample 7.6 cm in diameter by 5 cm deep was taken from each grab sample for infaunal analysis and a subsample 4.8 cm in diameter by 5 cm deep for mollusk analysis. Subsampling was necessary because the epifauna and infauna in the area are known to be both small and abundant and processing of the entire sample would be impractical. Replicated grab samples at each station, rather than replicated subsamples from one grab sample, were used to provide information on intrastation variability. All six nonmollusk subcores were processed on a 0.5-mm screen.
Samples for geochemical analyses (total organic carbon (TOC), oxidation-reduction potential (ORP), sediment oil and grease (O&G), total Kjeldahl nitrogen (TKN), and grain size) were obtained from the grabs from which the biological subcores were taken. Each replicate van Veen grab contained more than enough sediment for both purposes (methods HI0020117). Three subsamples 7.6 cm in diameter by 5 cm deep (one from each of three different grab samples) were taken from all stations. The top 2 cm of sediment of each subsample were used for geochemical analysis. Samples for TOC and sediment O&G analysis were put in screw-cap jars, placed on ice, and taken to the laboratory for analysis. Sediment analyses of sediment grain size, ORP, TKN, and O&G followed EPA procedures. Analysis of TOC was carried out by PACE, Inc. Laboratory (Southern California).
Dataset Citation
- Cite as: Moncur, James E.T.; Ray, Chittaranjan; Fujioka, Roger S.; Tanimoto, Ross S.; Cooke, William J.; Kay, E. Alison; Swartz, Richard C. (2002). Benthic faunal sampling adjacent to the Barbers Point ocean outfall, Oahu, Hawaii, 1986-2010 (NCEI Accession 9900098). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/9900098. Accessed [date].
Dataset Identifiers
ISO 19115-2 Metadata
gov.noaa.nodc:9900098
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NOAA National Centers for Environmental Information +1-301-713-3277 NCEI.Info@noaa.gov |
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NOAA National Centers for Environmental Information ncei.info@noaa.gov |
Time Period | 1986-01-01 to 2010-06-30 |
Spatial Bounding Box Coordinates |
West: -158.05717
East: -157.992
South: 21.26367
North: 21.28667
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Spatial Coverage Map |
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Dataset Progress Status | Complete - production of the data has been completed Historical archive - data has been stored in an offline storage facility |
Data Update Frequency | As needed |
Supplemental Information | REFERENCES: Brock, R.R., and J.H. Brock. 1977. A method for quantitatively assessing the infaunal community in coral rock. Limnol. Oceanogr. 7:108-118. Nelson, W.G. 1986. Benthic infaunal sampling in vicinity of the Sand Island Ocean Outfall, Oahu, Hawaii. Spec. Rep 6:20:86, Water Resources Research Center, University of Hawaii at Manoa, Honolulu, 117 pp. Kay,E.A. 1980. Micromollusks: Techniques and patterns in benthic marine communities In Environmental Survey Techniques for Coastal Water Converence Proceedings, Water Resources Research Center and Sea Grant, University of Hawaii at Manoa, and Hawaii Water Pollut. Control Assoc., January, Honolulu, pp. 93-112. Kay,E.A., and R. Kawamoto. 1983. Micromolluscan assemblages in Mamala Bay, Oahu 1974-1982. Tech Rep. No. 158, Water Resources Research Center, University of Hawaii at Manoa, Honolulu, 73 pp. Saunders, H., R. Hessler, and G. Hampson. 1965. An introduction to the study of deep-sea benthic faunal assemblages along the Gay Head- Bermuda transect. Deep Sea Res. 12:845-867. Swartz,R.C. 1978. Techniques for sampling and analyzing the marine benthos. Doc. No. 600/3-789-030, U.S. Environmental Protection Agency, Corvallis Environmental Research Laboratory, Corvallis, Oregon. Swartz,R.C. and J.H.Bailey-Brock, W.J. Cook, E.A.Kay. 1999. Benthic faunal sampling adjacent to Sand Island ocean outfall, Oahu, Hawaii, August 1998. Project Report PR-99-10. Water Resources Research Center, University of Hawaii at Manoa, Honolulu, 172 pp. U.S. Environmental Protection Agency. 1987a. Quality assurance and quality control for 301(h) monitoring programs: Guidance on field and laboratory methods. EPA 430/9-86-004, Office of Marine and Estuarine Protection, U.S. Environmental Protection Agency. 267 pp. U.S. Environmental Protection Agency. 1987b. Recommended biological indices for 301(h) monitoring programs. EPA 430/9-86-002, Office of Marine and Estuarine Protection, U.S. Environmental Protection Agency. 17 pp. Technical Reports of WRRC: PROJECT REPORT PR-2010-01 Benthic Faunal Sampling Adjacent to the Barbers Point Ocean Outfall, O'ahu, Hawai'i, March 2009 William G. Ambrose, Jr., Julie H. Bailey-Brock, William J. Cooke, Cynthia L. Hunter, with Regina K. Kawamoto, July 2009, xiii + 204 pp. Project Report PR-2008-11 Benthic Faunal Sampling Adjacent to the Barbers Point Ocean Outfall, O'ahu, Hawai'i, February 2008 William G. Ambrose, Jr. Julie H. Bailey-Brock William J. Cooke E. Alison Kay, June 2008, xii + 200 pp. Project Report PR-2008-01 Benthic Faunal Sampling Adjacent to the Barbers Point Ocean Outfall, O'ahu, Hawai'i, March 2007 William G. Ambrose, Jr. Julie H. Bailey-Brock William J. Cooke E. Alison Kay, July 2007, xi + 219 pp. Project Report PR-2006-09 Benthic Faunal Sampling Adjacent to the Barbers Point Ocean Outfall, Oahu, Hawaii, February 2006. Swartz, Richard C., Julie H. Bailey-Brock, E. Alison Kay, and Dean Pasko. June 2006. 225 pages Project Report PR-2006-05 Benthic Faunal Sampling Adjacent to Sand Island Ocean Outfall, O'ahu, Hawai'i, August 2005 Swartz, R.C., J.H. Bailey-Brock, W.J. Cooke, E.A. Kay, Mar 2006 Project Report PR-2005-10 Benthic Faunal Sampling Adjacent to Barbers Point Ocean Outfall, O'ahu, Hawai'i, February 2005 Swartz, R.C., J.H. Bailey-Brock, W.J. Cooke, E. Alison Kay, Jun 2005 Project Report PR-2004-08 Benthic Faunal Sampling Adjacent to Barbers Point Ocean Outfall, O'ahu, Hawai'i, January 2004 Swartz, R.C., J.H. Bailey-Brock, W.J. Cooke, E. Alison Kay, June 2004 Project Report PR-2003-08 Benthic Faunal Sampling Adjacent to Barbers Point Ocean Outfall, O'ahu, Hawai'i, January 2003 Swartz, R.C., J.H. Bailey-Brock, W.J. Cooke, E. Alison Kay, May 2003 Project Report PR-2002-09 Benthic faunal sampling adjacent to the Barbers Point Ocean Outfall, O'ahu, Hawai'i, January 2002 Swartz, Richard C., Julie H. Bailey - Brock, William J. Cooke, E. Alison Kay May 2002, 193 pp Project Report PR-2001-09 Benthic faunal sampling adjacent to Barbers Point Ocean Outfall, O'ahu, Hawai'i, January 2001 Swartz, Richard C., Julie H. Bailey - Brock, William J. Cooke, E. Alison Kay March 2001, 189 pp Project Report PR-98-13 Benthic faunal sampling adjacent to Barbers Point Ocean Outfall, Oahu, Hawaii, January 1998, Swartz, Richard C., June 1998 Project Report PR-97-08 Benthic faunal sampling adjacent to Barbers Point Ocean Outfall, Oahu, Hawaii, January-February 1997, Nelson, Walter G. June 1998 Project Report PR-96-08 Benthic faunal sampling adjacent to Barbers Point Ocean Outfall, Oahu, Hawaii, January 1996, Nelson, Walter G., May 1996 Project Report PR-95-12 Benthic faunal sampling adjacent to Barbers Point Ocean Outfall, Oahu, Hawaii, January 1995, Nelson, Walter G., May 1995 Project Report PR-94-15 Benthic faunal sampling adjacent to Barbers Point Ocean Outfall, Oahu, Hawaii, June 1993, Nelson, Walter G., March 1994 |
Purpose | Assess benthic environmental quality in region of sewer outfall |
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Last Modified: 2023-11-27T16:35:53Z
For questions about the information on this page, please email: ncei.info@noaa.gov
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