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<br />There are three strategies for collecting samples from distinct habitat types within reaches: <br /> <br /> <br />Strategy one: Collect several samples in several examples of each habitat type within each <br /> <br /> <br />reach. Samples from the same location and habitat type would be <br /> <br /> <br />composited into a single sample. Samples collected from the same habitat <br /> <br /> <br />type but in different locations within the same reach would not be <br /> <br /> <br />compo sited. <br /> <br /> <br />Advantage: Infonnation on the variability among similar habitats within the same reach. <br /> <br /> <br />Disadvantage: Many more samples to process, which will increase costs substantially. <br /> <br />Strategy two: Collect samples from similar habitat types throughout an individual reach and <br /> <br /> <br />composite them into a single sample. Different locations would be sampled <br /> <br /> <br />on each sampling trip to avoid continually sampling more or less productive <br /> <br />areas. <br /> <br />Advantage: There are fewer samples to process than strategy one. Retain information on <br /> <br />the variability among habitat types within reaches. <br />Disadvantage: This strategy provides no information on the variability within similar habitats <br />within the same reach. <br /> <br />Strategy three: Select a single representatiVe location of each habitat. type and collect <br />multiple samples within this location and composite them into a single <br />sample. <br />Advantage: This strategy reduces some variability that will probably ~ among <br /> <br />5 <br />