ILLINOIS NATURAL HISTORY SURVEY Growth and Survival of Nearshore Fishes in Lake Michigan

نویسندگان

  • John M. Dettmers
  • David H. Wahl
چکیده

Table 1. Summary of the samples collected May-September 1999 and 2000 at four locations along the Illinois shoreline of Lake Michigan. Table 2. Species composition and counts during 1999 and 2000 transect sampling at the reef and reference sites located in the nearshore waters of Lake Michigan. LIST OF FIGURES Figure 1. Nearshore sites sampled along the Illinois shoreline of Lake Michigan. Figure 2. Mean surface and bottom temperatures at (A) northern and (B) southern clusters in the nearshore waters of Lake Michigan during 1999 and 2000. Figure 3. Zooplankton density (mean +1 SE) from (A) May through September 1999 and (B) May through June 2000 at the northern and southern clusters in the nearshore waters of Lake Michigan. Figure 4. Percent composition of zooplankton taxa during June through September 1999 at (A) northern and (B) southern clusters in nearshore waters of Lake Michigan. Figure 5. Percent composition of zooplankton taxa during May through June 2000 at (A) northern and (B) southern clusters in nearshore waters of Lake Michigan. Figure 6. Zebra mussel veliger density (mean +1 SE) at northern and southern clusters in the nearshore waters of Lake Michigan during (A) June through September of 1999 and (B) June 2000. Figure 7. Mean (+1 SE) larval abundance (larvae/100m 3) at northern and southern clusters in the nearshore waters of Lake Michigan during May through July (A) 1999 and (B) 2000. Figure 8. Mean density (+1 SE) of larval yellow perch, alewife, and 'other' species at northern and southern clusters along the Illinois shoreline of Lake Michigan during (A) May-July 1999 and (B) May-June of 2000. Figure 9. Percent composition of larval fish during May through July 1999 and 2000 at (A) northern and (B) southern clusters in the nearshore waters of Lake Michigan. Figure 10. Mean (+1 SE) number of fish/100m 3 collected via trawl at N1 and N2 in the nearshore waters of Lake Michigan in 1999. Figure 11. Percent composition of fish taxa collected via trawl in 1999 at two sites in the northern cluster (A) N1 and (B) N2 in the nearshore waters of Lake Michigan. Figure 12. Mean (+1 SE) benthic macroinvertebrate densities collected via core samples in northern and southern clusters in the nearshore waters of Lake Michigan during (A) May-September 1999 and (B) May-August 2000. Figure 13. Percent composition of fish collected in 2000 via gillnets at the (A) reference and (B) artificial …

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تاریخ انتشار 2000