MARC details
| 000 -LEADER |
|---|
| fixed length control field |
02981cam a22003857 4500 |
| 001 - CONTROL NUMBER |
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| control field |
350267 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION |
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| fixed length control field |
100506s2004 nz d f eng |
| 035 ## - SYSTEM CONTROL NUMBER |
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| System control number |
(Sirsi) a145602 |
| 043 ## - GEOGRAPHIC AREA CODE |
|---|
| Geographic area code |
u-nz--- |
| 100 1# - MAIN ENTRY--PERSONAL NAME |
|---|
| Personal name |
Kilroy, Cathy |
| Affiliation |
(NIWA. Christchurch) |
| 245 02 - TITLE STATEMENT |
|---|
| Title |
A survey to investigate the presence or absence of Didymosphenia geminata in selected Southland rivers / |
| Statement of responsibility, etc |
Cathy Kilroy. |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) |
|---|
| Place of publication, distribution, etc |
[Wellington, N.Z.] : |
| Name of publisher, distributor, etc |
MAF Biosecurity New Zealand, |
| Date of publication, distribution, etc |
2004. |
| 300 ## - PHYSICAL DESCRIPTION |
|---|
| Extent |
10, [5] p. ; |
| Dimensions |
30 cm |
| 490 0# - SERIES STATEMENT |
|---|
| Series statement |
NIWA client report ; |
| Volume number/sequential designation |
CHC2004-133 |
| 490 0# - SERIES STATEMENT |
|---|
| Series statement |
NIWA Project ; |
| Volume number/sequential designation |
MAF05501 |
| 500 ## - GENERAL NOTE |
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| General note |
"December 2004" |
| 520 3# - SUMMARY, ETC. |
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| Summary, etc |
The invasive alga Didymosphenia geminata is now abundant in the lower Waiau and Mararoa Rivers, Southland, both of which are popular fishing rivers. There is concern that it may have been transferred to neighbouring catchments, which also have important trout fisheries. 2. Sixty-two sites in the Upper Waiau, Von, Oreti, Aparima and Mataura Rivers were surveyed on 17-18 December 2004 to check for the presence of low levels of D. geminata. 3. The survey targeted river sites from which D. geminata would be most likely to spread into the river (i.e. fishing/recreational access points). The sampling method also targeted habitats most likely to be colonized by D. geminata. 4. Thirty-six drift-net samples provided information about algal drift between the sites. These samples were taken because, in rivers where it is present, D. geminata is known to form drifting fragments. 5. Approximately 550 sub-samples of stone scrapings and drift net samples were examined microscopically. No traces of D. geminata cells or stalks were found in any of the examined material. 6. A simple test using binomial (presence/absence) data was used to estimate the probability of finding D. geminata in the survey. Assuming independent sampling units (sites), random sampling, and uniform distribution of D. geminata with an expected occurrence in less than 5 of every 100 sampling units (if it was present in the rivers), a 62-site survey has a 95% probability of finding D. geminata in at least one sampling unit. For an expected occurrence of 2 in every 100 sampling units, the probability of finding D. geminata in the survey falls to 72%.. ... - Executive summary. |
| 590 ## - LOCAL NOTE (RLIN) |
|---|
| Local note |
Electronic |
| 650 #4 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name as entry element |
DIDYMOSPHENIA GEMINATA |
| 9 (RLIN) |
12153 |
| 650 #4 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
RESEARCH PROJECTS |
| 9 (RLIN) |
47895 |
| 650 #4 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
SURVIVAL RATES |
| 9 (RLIN) |
49209 |
| 650 #4 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
BIOLOGICAL INVASIONS |
| 9 (RLIN) |
15517 |
| 650 #4 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
DIATOMS |
| 9 (RLIN) |
51521 |
| 650 #4 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
ENVIRONMENTAL CONDITIONS |
| 9 (RLIN) |
39771 |
| 650 #4 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
RIVERS |
| 9 (RLIN) |
1457 |
| 650 #4 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
CHEMICAL CONTROL |
| 9 (RLIN) |
30710 |
| 650 #4 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name as entry element |
SOUTH ISLAND |
| 9 (RLIN) |
35760 |
| 650 #4 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name as entry element |
LAKES |
| 9 (RLIN) |
48735 |
| 650 #4 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
STREAMS |
| 9 (RLIN) |
19129 |
| 710 2# - ADDED ENTRY--CORPORATE NAME |
|---|
| Corporate name or jurisdiction name as entry element |
Biosecurity New Zealand |
| 9 (RLIN) |
22682 |
| 856 41 - ELECTRONIC LOCATION AND ACCESS |
|---|
| Uniform Resource Identifier |
<a href=" http://www.biosecurity.govt.nz/files/pests/didymo/didymo-survey-dec-04.pdf"> http://www.biosecurity.govt.nz/files/pests/didymo/didymo-survey-dec-04.pdf</a> |
| 856 41 - ELECTRONIC LOCATION AND ACCESS |
|---|
| Uniform Resource Identifier |
<a href=" http://webcat.niwa.co.nz/documents/CHC2004_133.pdf"> http://webcat.niwa.co.nz/documents/CHC2004_133.pdf</a> |
| 996 ## - |
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| -- |
1 |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) |
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| Koha item type |
PDF |
| Koha issues (borrowed), all copies |
0 |