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1 Woods Hole Oceanographic Institution, Woods Hole, Massachusetts
1. The daily barnacle cyprid attachment in Biscayne Bay, Florida, and concomitant water temperature and salinity measurements were recorded continuously during a period of 38 months.
2. No relationship between the frequent peaks in cyprid settling and changes in temperature and salinity was established.
3. Seasonal periods of heavy cyprid attachment were observed to occur within a temperature range from 18° C. to 27° C.
4. The survival of cyprids increased gradually from 1943 to 1945 and then decreased sharply, as shown by a comparison of monthly barnacle collections with monthly totals of daily cyprid attachments.
5. Seasonal variation in growth rates was observed to be an important factor in limiting the numbers of barnacles attached per unit area.
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