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      <marc:subfield code="a">Zellmer, Iris D., </marc:subfield>
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      <marc:subfield code="a">Food chain effects of sublethal ultraviolet radiation on subarctic Daphnia pulex : </marc:subfield>
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      <marc:subfield code="c">I.D. Zellmer, M.T. Arts, and Vladimir Sustr.</marc:subfield>
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      <marc:subfield code="a">[Burlington, Ont.] : </marc:subfield>
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      <marc:subfield code="c">September 2006.</marc:subfield>
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      <marc:subfield code="a">NWRI contribution ; </marc:subfield>
      <marc:subfield code="v">no. 06-215</marc:subfield>
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      <marc:subfield code="a">Digitized edition from print [produced by Environment and Climate Change Canada].</marc:subfield>
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      <marc:subfield code="a">"Arbh. Hydrobjol. 167 1-4 515-531."</marc:subfield>
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      <marc:subfield code="a">"In shallow subarctic ponds Daphnia and their algal food are often exposed to solar ultraviolet radiation (UVR). It was previously demonstrated that direct exposure of Daphnia to UVR may result in sublethal damage to Daphm'a‘s intestinal system. This led to the hypothesis that, as consequences of such exposures, Daphnia may be experiencing a situation similar to starvation"--Abstract, p. [515].</marc:subfield>
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      <marc:subfield code="a">Arts, Michael Theodore, </marc:subfield>
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      <marc:subfield code="a">National Water Research Institute (Canada)</marc:subfield>
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      <marc:subfield code="a">NWRI contribution ;</marc:subfield>
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