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    Spatially heterogeneous, synchronous settlement of Chthamalus spp. larvae in northern Baja California

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    m302p177.pdf (332.3Kb)
    Date
    2005-11-04
    Author
    Ladah, Lydia B.  Concept link
    Tapia, Fabian J.  Concept link
    Pineda, Jesus  Concept link
    Lopez, Manuel  Concept link
    Metadata
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    Citable URI
    https://hdl.handle.net/1912/4486
    As published
    https://doi.org/10.3354/meps302177
    DOI
    10.3354/meps302177
    Keyword
     Synchronous settlement; Spatial variability; Intertidal barnacle; Chthamalus; Baja California 
    Abstract
    We evaluated the spatial variability in barnacle settlement at scales of 10s to 100s of meters (among-sites: 300 m; within-site: 30 m) along 1 km of coastline in the Bay of Todos Santos, northern Baja California, Mexico. Settlement of the intertidal barnacles Chthamalus spp. was monitored daily from April 1 to May 10, 2002, and thereafter every other day to September 18, 2002. Concurrently, temperature of the water column was measured every 15 min, and hourly wind speed and direction data were acquired from a nearby site. We identified 12 settlement pulses during our study, with all but 2 pulses showing significant differences in mean settlement at either or both spatial scales. Despite a high variability in numbers, settlement pulses were synchronous between sites. The occurrence of settlement pulses was significantly correlated with a rapid increase in the stratification of nearshore waters, but not correlated with sudden fluctuations in the direction of winds perpendicular to the shore. Sudden changes in the stratification of nearshore waters have been associated with the occurrence of internal tidal bores. Our results suggest that internal motions, more specifically internal tidal bores, could be an important mechanism for the onshore transport of larvae in the Bay of Todos Santos.
    Description
    Author Posting. © Inter-Research, 2005. This article is posted here by permission of Inter-Research for personal use, not for redistribution. The definitive version was published in Marine Ecology Progress Series 302 (2005): 177-185, doi:10.3354/meps302177.
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    • Biology
    Suggested Citation
    Marine Ecology Progress Series 302 (2005): 177-185
     

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