000 02185nam  2200349za 4500
0019.847884
003CaOODSP
00520221107153537
007cr |||||||||||
008171128s1985    onca|||fo    f000 0 eng d
040 |aCaOODSP|beng
041 |aeng|bfre
043 |an-cn---
0861 |aEn13-5/85-36E-PDF
1001 |aPainter, Scott.
24510|aShort-term impact of harvesting on Eurasian watermilfoil |h[electronic resource] / |cby D.S. Painter & J.I. Waltho.
260 |aBurlington, Ont. : |bAquatic Ecology Division, National Water Research Institute, Canada Centre for Inland Waters, |c[1985].
300 |a23 p. : |bill.
4901 |aNWRI ; |v85-36
500 |aDigitized edition from print [produced by Environment and Climate Change Canada].
504 |aIncludes bibliographical references.
5200 |a"Eurasian watermilfoil is a nuisance aquatic plant which has invaded many lakes and rivers in Canada. Mechanical harvestingis generally agreed to be the most ecologically sound control method but is criticized because multiple harvests may be required each growing season and non long-term effect on regrowth may be apparent. Environment Canada's research on mechanical harvesting of milfoil examined the short-term effects of cutting to illustrate how to make a harvesting program as efficient as possible and to determine if harvesting stressed the plant. The short-term efficacy of harvesting was dramatically influenced by the timing of the cut in 19 harvesting scenarios examined. A June/August or June/September double cut would appear to be the most desirable scenario with very little advantage in a triple cut"--Managememt perspective.
546 |aIncludes abstract and management perspective in French.
69207|2gccst|aWater plants
69207|2gccst|aInvasive species
7001 |aWaltho, J. I.
7101 |aCanada. |bEnvironment Canada.
7102 |aNational Water Research Institute (Canada)
830#0|aNWRI contribution ;|vno. 85-36|w(CaOODSP)9.844121
85640|qPDF|s1.64 MB|uhttps://publications.gc.ca/collections/collection_2017/eccc/En13-5-85-36-eng.pdf