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| 01989cam 2200397zi 4500 |
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| 001 | 9.868622 |
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| 003 | CaOODSP |
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| 005 | 20221107162634 |
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| 006 | m o d f |
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| 007 | cr ||||||||||| |
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| 008 | 190220s2004 onc #ot f|0| 0 eng d |
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| 040 | |aCaOODSP|beng|erda|cCaOODSP |
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| 041 | |aeng|bfre |
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| 043 | |an-cn-on |
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| 086 | 1 |aEn13-5/04-167E-PDF |
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| 100 | 1 |aCharlton, Murray N., |eauthor. |
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| 245 | 10|aReview of thirty years of change in Lake Erie water quality / |cM. N. Charlton and J. E. Milne. |
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| 264 | 1|aBurlington, Ontario : |bNational Water Research Institute, |c[2004] |
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| 300 | |a1 online resource (17, 9 pages): |bfigures. |
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| 336 | |atext|btxt|2rdacontent |
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| 337 | |acomputer|bc|2rdamedia |
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| 338 | |aonline resource|bcr|2rdacarrier |
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| 490 | 1 |aNWRI contribution ; |v04-167 |
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| 500 | |aDigitized edition from print [produced by Environment and Climate Change Canada]. |
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| 504 | |aIncludes bibliographic references. |
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| 520 | |a"Three main events have occurred since the beginning of popular environmental interest in Lake Erie over 30 years ago. First, the near demise of the walleye in the 1950s and 1960s, resulted in development of fisheries management techniques to ensure recovery and attempt sustainability. Second, loadings of toxic chemicals and phosphorus were controlled under the Canada-U.S. Great Lakes Water Quality Agreement (GLWQA). Third, an invasion of exotic species became apparent in the 1980s and continues today"--Abstract. |
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| 546 | |aIncludes abstract in French. |
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| 692 | 07|2gccst|aLakes |
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| 692 | 07|2gccst|aWater quality |
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| 692 | 07|2gccst|aWater pollution |
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| 700 | 1 |aMilne, Jacqui, |eauthor. |
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| 710 | 1 |aCanada. |bEnvironment Canada. |
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| 710 | 2 |aNational Water Research Institute (Canada) |
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| 830 | #0|aNWRI contribution ;|v04-167.|w(CaOODSP)9.844121 |
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| 856 | 40|qPDF|s1.71 MB|uhttps://publications.gc.ca/collections/collection_2019/eccc/en13-5/En13-5-04-167-eng.pdf |
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