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      <marc:subfield code="a">Vieira, C., </marc:subfield>
      <marc:subfield code="e">author.</marc:subfield>
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      <marc:subfield code="a">Nutrient fluxes across the sediment-water interface of Penetang Bay, Severn Sound / </marc:subfield>
      <marc:subfield code="c">C. Vieira and F. Rosa.</marc:subfield>
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      <marc:subfield code="a">Burlington, Ontario : </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">Includes bibliographical references (pages 19-20).</marc:subfield>
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      <marc:subfield code="a">"Nutrient fluxes across the sediment water interface were measured at two sites in Penetang Bay and at one control site using dialysis chambers (peepers). Penetang Bay is located in Severn Sound, in the south-eastern portion of Georgian Bay, Lake Huron, Ontario. Use of the most representative ammonia and soluble reactive phosphorus data yielded a conservative estimate of the internal loading of these nutrients. The sediments of Penetang Bay act as a source of nutrients to the overlying water"--Abstract.</marc:subfield>
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      <marc:subfield code="a">Rosa, Fernando, </marc:subfield>
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      <marc:subfield code="a">Canada. </marc:subfield>
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      <marc:subfield code="a">National Water Research Institute (Canada). </marc:subfield>
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      <marc:subfield code="u">https://publications.gc.ca/collections/collection_2019/eccc/en13-5/En13-5-92-63-eng.pdf</marc:subfield>
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