Effects of Substrate Rugosity on Subtidal Algal Recruitment

Rubicon Research Repository/Manakin Repository

Effects of Substrate Rugosity on Subtidal Algal Recruitment

Show full item record


Title: Effects of Substrate Rugosity on Subtidal Algal Recruitment
Author: Muth, AF
Abstract: This study examined the effects of substrate rugosity and season on subtidal algal recruitment. Resin molds were made from silicone casts of two common rock types found in Carmel Bay, California; the Carmelo Formation sandstone and Santa Lucia granodiorite. Due to the different formation processes of these rock types, the surfaces exhibit different rugosities on a micron to centimeter scale that had the potential to affect algal propagule settlement and recruitment. Recruitment onto two substrate types was observed over a 13-month field period for the following four groups: red algae, Ulva spp., coralline algae and kelp species. 2-Factor ANOVA results identified seasonal differences in the Ulva spp. (p less than or equal to 0.001), coralline algae (p less than or equal to 0.001) and kelp species (p = 0.022) categories, but not for red algae (p = 0.188). The red algal grouping was the broadest category, encompassing species that likely recruit at different times throughout the year and thus may be why seasonal effects were not seen. Effects of substrate were detected in the kelp species category (p = 0.023). This result may be due to life history traits exhibited by these algal species. Results from this study show that macroalgal species that require propagules to settle in close proximity for successful recruitment (i.e., kelp species) may be more affected by substrate rugosity.
Description: American Academy of Underwater Sciences (http://www.aaus.org/)
URI: http://archive.rubicon-foundation.org/10281
Date: 2012

Files in this item

Files Size Format View
AAUS_2012_6.pdf 13.96Mb PDF View/Open

This item appears in the following Collection(s)

Show full item record

Browse

My Account