![]() Wind speed showed no clear seasonal patterns and atmospheric pressure was overall the lowest when larvae were most abundant. Maximum solar radiation preceded the maximum of larval abundance. There was a positive correlation between maximum abundance of larvae and highest water temperatures. We collected larvae belonging to 20 different taxa of sponges, which are among the most common in the sublittoral hard bottom communities of the NW Mediterranean and other temperate areas. In the laboratory, we recorded external features and main behaviors of larvae. seawater temperature, solar radiation, wind speed and atmospheric pressure). Data on larval abundance were cross correlated with the values of environmental parameters (i.e. Plankton was collected by SCUBA diving once or twice a week during a 2-year period over a rocky artificial reef in the NW Mediterranean. In this study, we show for the first time the dynamics of sponge larvae assemblages from nearshore meroplankton.
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