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Assessment of nutrient limitation in fertilized fish ponds by algal assay (Record no. 9249)

MARC details
000 -LEADER
fixed length control field	03590cas a2200373 a 4500
005 - DATE AND TIME OF LATEST TRANSACTION
control field	20260817163620.0
008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION
fixed length control field	111005s1991 th uu\|m rtt 0\| a1eng d
035 ## - SYSTEM CONTROL NUMBER
System control number	.b10099049
099 #9 - LOCAL FREE-TEXT CALL NUMBER (OCLC)
Classification number	AIT Thesis no. AE-91-34
100 1# - MAIN ENTRY--PERSONAL NAME
Personal name	Guttman, Hans
245 10 - TITLE STATEMENT
Title	Assessment of nutrient limitation in fertilized fish ponds by algal assay
260 ## - PUBLICATION, DISTRIBUTION, ETC.
Place of publication, distribution, etc.	Bangkok :
Name of publisher, distributor, etc.	Asian Institute of Technology,
Date of publication, distribution, etc.	1991
300 ## - PHYSICAL DESCRIPTION
Extent	87 p. +
Accompanying material	1 online resource
490 1# - SERIES STATEMENT
Series statement	Thesis ;
Volume/sequential designation	no. AE-91-34
500 ## - GENERAL NOTE
General note	A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science
502 ## - DISSERTATION NOTE
Dissertation note	Thesis (M.Sc.) - Asian Institute of Technology, 1991
520 ## - SUMMARY, ETC.
Summary, etc.	A provisional technique for field (outdoor) algal assay procedure was devised; using either a 125 mL Erlenmeyer flask or a 70 mL test-tube as an incubation vessel with a 25 to 30 mL sample covered with a loose fitting aluminum cap, incubating under a shade cloth for 3-4 days at ambient air temperatures and shaking the vessel s three times daily. An algal assay methodology for determining the limiting nutrient (carbon, nitrogen or phosphorus) for fertilized fishponds using the above technique and indigenous algal cultures was devised and tested. Results indicated full agreement between assay results and nutrient limitation for prepared algal growth media. Tests of pond waters showed a good agreement between assay responses and nutrient ratios of the waters tested. Visual assessment of assay responses were evaluated and found that over 90% of people involved (n= 15) could separate a chlorophyll a difference of < 10 mg/m3 for a 100 mL sample filtered on to a Whatman GF/C filter. Algal yield dose response patterns to phosphorus spiking of phosphorus limited cultures followed a asymptotic relation (r2 > 0.86, p < 0.001 for six trials). Analysis of the regression slopes showed a significant correlation (r2 = 0.85, p < 0.01) between the s lopes and the initial dissolved inorganic nitrogen (DIN) of the culture media. This lends support to the underlying theories for assessment of DIN through a l gal assays. Dose response experiments showed a significant and relatively close correlation (r = 0.68, p< 0.001) between initial DIN and visually assessed spike saturation levels (the amount of spike needed to make DIN limiting) for phosphorus limited algal cultures. Investigations by algal assay of pond/tank waters used for fish culture at the Asian Institute of Technology, Bangkok, showed a dominance of nitrogen limitation (six out of nine cases). From these results a pattern of increased algal yield (measured as % over control) was determined as C:N ratio increases and N:P ratio decreases.
650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element	Fish ponds
700 1# - ADDED ENTRY--PERSONAL NAME
Personal name	Knud-Hansen, Christopher F.,
Relator term	Chairperson
700 1# - ADDED ENTRY--PERSONAL NAME
Personal name	Edwards, Peter,
Relator term	Examination Committee
700 1# - ADDED ENTRY--PERSONAL NAME
Personal name	Lin, Chang Kwei,
Relator term	Examination Committee
810 2# - SERIES ADDED ENTRY--CORPORATE NAME
Corporate name or jurisdiction name as entry element	Asian Institute of Technology.
Title of a work	Thesis ;
Volume/sequential designation	no. AE-91-34
856 ## - ELECTRONIC LOCATION AND ACCESS
Materials specified	Full-Text
Uniform Resource Identifier	<a href="http://203.159.5.9/ait-thesis/detail.php?q=B17245">http://203.159.5.9/ait-thesis/detail.php?q=B17245</a>
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998 ## - LOCAL CONTROL INFORMATION (RLIN)
Operator's initials, OID (RLIN)	2
Cataloger's initials, CIN (RLIN)	951012
First date, FD (RLIN)	m
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945 ## - LOCAL PROCESSING INFORMATION (OCLC)
l	mnait
945 ## - LOCAL PROCESSING INFORMATION (OCLC)
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942 ## - ADDED ENTRY ELEMENTS (KOHA)
Koha item type	22-AIT Thesis (Replacement)
942 ## - ADDED ENTRY ELEMENTS (KOHA)
Koha item type	40-Archives
909 ## - LOCAL ITEMS USED
Barcode	Barcode : 30050120581409
CREATED	CREATED : 2013-06-09
RECORD Id	RECORD # : i12740834
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Barcode	Barcode : 30050120362974
CREATED	CREATED : 2016-05-27
RECORD Id	RECORD # : i1300069x
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Holdings
Withdrawn status	Lost status	Damaged status	Not for loan	Home library	Current library	Shelving location	Date acquired	Cost, normal purchase price	Total checkouts	Full call number	Barcode	Date last seen	Copy number	Price effective from	Koha item type
			Available for Loans	Asian Institute of Technology Library	Asian Institute of Technology Library	AIT Publications	17/08/2026	50.00		AIT Thesis no. AE-91-34	30050120581409	17/08/2026	3	17/08/2026	22-AIT Thesis (Replacement)
			Available for Loans	Asian Institute of Technology Library	Asian Institute of Technology Library	Archives	17/08/2026			AIT Thesis no. AE-91-34	30050120362974	17/08/2026		17/08/2026	40-Archives

Assessment of nutrient limitation in fertilized fish ponds by algal assay (Record no. 9249)

AIT

Asian Institute of Technology Library