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Cruz, T,Castro, JJ,Delany, J,McGrath, D,Myers, AA,O'Riordan, RM,Power, AM,Rabaca, J,Hawkins, SJ
2005
May
Journal Of Experimental Marine Biology And Ecology
Tidal rates of settlement of the intertidal barnacles Chthamalus stellatus and Chthamalus montagui in western Europe: the influence of the night/day cycle
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barnacles Chthamalus night/day settlement tidal cycle western Europe TEMPERATE MANGROVE FOREST SEMIBALANUS-BALANOIDES L. NEW-SOUTH-WALES POSTSETTLEMENT MORTALITY MARINE-INVERTEBRATES HABITAT SELECTION SPATIAL SCALES C-STELLATUS RECRUITMENT PATTERNS
318
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Chthamalus montagui and Chthamalus stellatus are abundant barnacles in western Europe. Tidal settlement of Chthamalus in SW Ireland and SW Portugal was studied in relation to a night and day factor and at different temporal (dates) and spatial (shores and sites) scales. Based on the identifiable cyprids and metamorphs, Chthamalus settlement in SW Ireland was comprised mainly of C. stellatus but was composed of C. montagui only in SW Portugal.In SW Ireland and SW Portugal, settlement rates of Chthamalus (mean number of settlers per 25 cm(2) +/- S.E.) were higher after one day tidal cycle (597 +/- 158.7 in SW Ireland, 144 +/- 23.6 in SW Portugal) than one night tidal cycle (55 +/- 12.1 in SW Ireland, 13 +/- 2.2 in SW Portugal), but significant differences were only detected in SW Portugal. Different models were proposed for explaining this pattern related to night and day variability of the physical processes responsible for transporting cyprids to shore (1), and/or of pre-settlement behaviour (2) and/or of settlement behaviour of cyprids (3).Spatial patterns of tidal settlement of both species or at both locations seem similar with small scale variability (between sites. 5 to 30 in apart) in settlement of Chthamalus being the only spatial scale at which variability was detected in both locations.
10.1016/j.jembe.2004.12.005
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