Sampling was carried out by the same two collectors throughout the study period over the entire length of the rocky shore, including the sand reef and rocky portions, covering a total area of 1200 [m.sup.2].
A total of 1407 specimens were collected; 776 on the sand reef (SR) and 631 on the rocky portion (RO).
Sex ratio and number of individuals on the sand reef (SR) and rocky surface (RO) from January 1996 to December 1997.
The rocky shore of Grande Beach (Ubatuba, state of Sao Paulo, Brazil) is composed of many large rocky outcrops and sand reefs, and this landscape attracts large numbers of tourists (Burone and Pires-Vanin, 2006).
The sand reefs produced by sabellariid polychaetes support several communities of decapod crustaceans (Coull and Bell, 1983).
In January 2004, eight oyster reefs (625 [m.sup.2] each) were constructed in each of three areas of Mobile Bay (Cedar Point, Sand Reef, and Shellbank), which varied in water quality and spatial extent of existing oyster reefs.
Two sites are on the west side of Mobile Bay, Cedar Point Reef Area H (30.31[degrees]N, 88.11[degrees]W) and Sand Reef Area A (30.27[degrees]N, 88.09[degrees]W).
Four high relief and four low relief reefs were constructed at each of three restoration sites (Cedar Point, Sand Reef, and Shellbank).
Site (df = 2) had three levels (Cedar Point Reef, Sand Reef, and Shellbank Reef), reef height (df = 1) had two levels (high relief reefs and low relief reefs), and position (df = 1) had two levels (base and crest).
Site (df = 2) had three levels (Cedar Point Reef, Sand Reef, and Shellbank Reef), reef height (df = 1) had two levels (high relief reefs and low relief reefs), and month (df = 5) had six levels (June 04, July 04, August 04, June 05, July 05, and November 05).
All sturgeons captured have been associated with moderate to strong currents, depths of 13 to 45 feet (4 to 14 m), a sand or sand and gravel substratum, and structure in the form of sand reefs
, dunes, or secondary channels.