Investigation of the relationship of the fish population with their associated benthos community (population counts, activity and stomach content)
Entry ID:
K054_1991_1992_NZ_2
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Summary
Abstract:
The relationship between the benthos and fish populations associated with it was investigated. Fish counts, fish behaviour and samples of fish were collected. Four 5m x 2m transects were surveyed for fish counts at four sites at Cape Armitage and Pram Point. The sites at Cape Armitage represented four different depths over the reef platform. At Pram Point, two shallow sites and two deep sites were ... surveyed. Within each transect, all fish observed by a diver with a torch were identified and recorded with an estimate of their total length. Up to 10 fish at each site were followed for ten minutes. Their behaviour every minute was recorded. These observations discontinued after 2 days as the fish were found to be inactive for great lengths of time. Diving observations were limited to a maximum of 40 minutes and this method therefore proved inefficient to continue this survey. Ten fish of a range of sizes from each species (Trematomus bernacchii, T. pennellii (centronotus) and T. hansoni) were collected from an area distant from the survey sites so as not to interfere with densities in the monitored area. Each fish was measured and weighed, then fixed in bouins and the gut injected with preservative. Samples were analysed for gut content, sex and age. 
Geographic Coverage
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Spatial coordinates
Parent DIF
This data set description is a member of a collection. The
collection is described in
K054_1991_1992_NZ_1
Temporal Coverage
Start Date:
1991-10-16
Stop Date:
1991-11-09
Quality
WARNING: EP TOMS started experiencing calibration problem since 2002. For data beginning in year 2000, the calibration has been stabilized relative to NOAA-16 SBUV/2 in the equatorial zone. Because of continuing changes in the optical properties of the front scan mirror that are not well understood, data are showing a latitude dependent error that cannot be corrected by a simple calibration correction. The calibration appears to be stable near the equator. But by 50 degrees latitude, there is now a -2% to -4% error in TOMS, a bit larger in the northern hemisphere than in the southern hemisphere. Because of this error, data since 2002 should NOT be used for trend analysis
Use Constraints
EP TOMS started experiencing calibration problem since 2002. Because of the continuing changes in the optical properties of the front scan mirror that are not well understood, data started showing a latitude dependent error that cannot be corrected by a simple calibration correction. The calibration appears to be stable near the equator. But by 50 degrees latitude, there is now a -2% to -4% error in TOMS, a bit larger in the northern hemisphere than in the southern hemisphere.
Earth Probe TOMS data since 2002 should NOT be used for trend analysis because of the calibration problem.
Data Set Progress
COMPLETE
Distribution
Distribution Media:
ftp
Distribution Size:
0.2 Mbytes
Distribution Format:
HDF
Fees:
none
Personnel
Role:
INVESTIGATOR
Phone:
301-614-5731
Fax:
301-614-5903
Email:
Pawan.K.Bhartia at nasa.gov
Contact Address:
NASA
Goddard Space Flight Center
Mailstop 613.3
City:
Greenbelt
Province or State:
MD
Postal Code:
20771
Country:
USA
Role:
INVESTIGATOR
Phone:
301-614-6776
Email:
omar.o.torres at nasa.gov
Contact Address:
NASA Goddard Space Flight Center
Code 614
City:
Greenbelt
Province or State:
MD
Postal Code:
20771
Country:
USA
Role:
INVESTIGATOR
Email:
Jay.R.Herman at nasa.gov
Contact Address:
NASA
Goddard Space Flight Center
Mailstop 614.0
City:
Greenbelt
Province or State:
MD
Postal Code:
20771
Country:
USA
Role:
INVESTIGATOR
Phone:
301-614-6038
Fax:
301-614-5903
Email:
richard.d.mcpeters at nasa.gov
Contact Address:
NASA
Goddard Space Flight Center
Mailstop 613.3
City:
Greenbelt
Province or State:
MD
Postal Code:
20771
Country:
USA
Role:
TECHNICAL CONTACT
Phone:
301-614-5284
Email:
Suraiya.Ahmad at nasa.gov
Contact Address:
NASA Goddard Space Flight Center
Code 610.2
City:
Greenbelt
Province or State:
MD
Postal Code:
20771
Country:
USA
Role:
DIF AUTHOR
Phone:
301-614-5121
Email:
James.Johnson at nasa.gov
Contact Address:
NASA Goddard Space Flight Center
Code 610.2
City:
Greenbelt
Province or State:
MD
Postal Code:
20771
Country:
USA
Publications/References
Eck, T. F., Bhartia, P. K., Kerr, J. B., Satellite estimation of spectral UVB irradiance using TOMS derived total ozone and UV reflectivity, Geophy. Res. Letters 1995, 22, 611-614 Herman, J.R., et al., "Meteor-3 Total Ozone Mapping Spectrometer (TOMS) Data Products User's Guide." NASA reference publication 1393, 1996. McPeters, R.D., et al., "Earth-Probe Total Ozone ... Mapping Spectrometer (TOMS) Data Products User's Guide." NASA Reference Publication 206895, April 1998. ftp://toms.gsfc.nasa.gov/pub/eptoms/EARTHPROBE_USERGUIDE.PDF
McPeters, R.D., et al., "Nimbus-7 Total Ozone Mapping Spectrometer (TOMS) Data Products User's Guide." NASA Reference Publication 1384, April 1996.
Krueger, A., M. Schoeberl, P.Newman, and R.Stolarski, June 1992. "The 1991 Antarctic Ozone Hole; TOMS Observations", Geophys. Res. Letters, 19: 1215-1218.
Schoeberl, M.R., A.J. Krueger, and P.A. Newman, 1986. 'The Morphology of Antarctic Total Ozone As Seen by TOMS,' Geophys. Res. Letters, 13:1217-1220.
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date:
2011-01-21
Last DIF Revision Date:
2013-05-02
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