000	02892cam  2200373zi 4500
001	9.878538
003	CaOODSP
005	20221107165252
006	m     o  d f
007	cr bn|||||||||
008	190826s1993    onca    ob   f000 0 eng d
040	|aCaOODSP|beng|erda|cCaOODSP
041	0 |aeng|beng|bfre
043	|an-cn-on
086	1 |aEn13-5/93-50E-PDF
100	1 |aSherry, J. P., |eauthor.
245	10|aEffects of 2,4-dichlorophenoxyacetic acid on freshwater ponds : |bfungal propagules / |cJ. Sherry.
264	1|aBurlington, Ontario : |bResearch and Applications Branch, National Water Research Institute, |c[1993]
300	|a1 online resource (4 unnumbered pages, 21 pages, 9 unnumbered pages) : |billustrations.
336	|atext|btxt|2rdacontent
337	|acomputer|bc|2rdamedia
338	|aonline resource|bcr|2rdacarrier
490	1 |aNWRI contribution ; |v93-50
500	|aDigitized edition from print [produced by Environment and Climate Change Canada].
504	|aIncludes bibliographical references (pages 14-18).
520	3 |a"The effect of treatments with 2,4-dichlorophenoxyacetic acid (2,4-D) on fungal propagules in man-made freshwater ponds was studied as part of a larger investigation into the effects of the herbicide on the ponds' ecology and chemistry. Myriophyllum spicatum was planted in the ponds as a target plant; the ponds were allowed to stabilize before being treated with djmethylamine (DMA) and butoxyethylester (BEE) derivatives of 2,4-D (1 mg/L). The treatments did not have a clear effect on propagule levels in either the water column or sediment, which indicates the absence of a primary effect. The mean levels of moulds and "total fungi" in both sets of treated ponds, and of yeasts in the DMA treated ponds tended to be depressed relative to the control ponds over the first 114 days after treatment. That observation was reinforced by plots of the accumulated differences between the treated and control ponds. The mean differences between the control and treated ponds were highly variable, however. The degree of replication did not permit a statistical test of those differences. If real, the trends were probably a result of unidentified secondary effects of the pond treatments. The results imply that applications of 2,4-D to aquatic vegetation at realistic rates do not drastically affect fungi in the water column or sediment"--Abstract.
546	|aIncludes summaries and abstracts in English and French.
692	07|2gccst|aHerbicides
692	07|2gccst|aFungi
710	1 |aCanada. |bEnvironment Canada.
710	2 |aNational Water Research Institute (Canada). |bResearch and Applications Branch.
830	#0|aNWRI contribution ;|v93-50.|w(CaOODSP)9.844121
856	40|qPDF|s2.46 MB|uhttps://publications.gc.ca/collections/collection_2019/eccc/en13-5/En13-5-93-50-eng.pdf