Title:
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Use of sequential sampling of amphipod abundance to classify the biotic integrity of acid-sensitive lakes |
Author:
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France, Robert
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Abstract:
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A sequential sampling program is described for ubiquitous, cost-effective biomonitoring of the effects of lake acidification. Spring densities of the littoral amphipod Hyalella azteca are quantitatively sorted into 5 abundance categories. Stratification of proportional densities per unit macrophyte biomass in relation to the aqueous total phosphorus concentration is an essential step in the a priori definition of decision criteria. Density rankings were related to lake acidity and to detailed lake-specific information on patterns of Hyalella life history and acid tolerance. Incorporation of Hyalella abundance as a potential metric for the assessment of the biological integrity of acid-sensitive waters is recommended. The temporal integration of transient changes in spring meltwater chemistry is an important rationale for the development of such biomonitoring procedures. |
URI:
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http://hdl.handle.net/10214/15589
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Date:
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1991 |
Rights:
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Queen's Printer for Ontario, Crown Copyright, Non-Commercial Use Permitted |
Rights Holder:
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Queen's Printer for Ontario |