Polar Biology

, Volume 30, Issue 5, pp 663–667 | Cite as

Recolonization of a high latitude hard-bottom nearshore community

Short Note

Abstract

Early recolonization of sessile organisms and grazer effects on recolonization was examined in a high latitude nearshore rocky environment. A manipulative experiment using cleared boulders and cages was used to determine the time needed for initial recruitment and composition of early recruits. The hypothesis tested was invertebrate grazing is causing slow recolonization. Four years of monitoring cleared boulders resulted in an initial recruitment of primarily barnacles in year 3 on boulders that were caged to exclude grazers. The total percent cover on these boulders after 4 years was less than 2%. Cage control and uncaged boulders showed less recruitment. Uncleared and uncaged control rocks showed insignificant temporal variation. Concurrent observations revealed that macroalgae were reproductive during the study and that space was limiting in this community. This study strongly suggests that perturbations causing removal of hard substrate sessile communities in the Beaufort Sea will result in very slow community recovery.

Keywords

Arctic Recruitment Grazers Boulders 

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Copyright information

© Springer-Verlag 2007

Authors and Affiliations

  1. 1.School of Fisheries and Ocean SciencesUniversity of Alaska FairbanksFairbanksUSA

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