Bushek DJournal of Experimental Marine Biology and Ecology2010-02-152010-02-151988http://hdl.handle.net/1969.3/230781-18In Galveston Bay, Texas, pier pilings within 10 m of the shore are dominated by the American oyster Crassostrea virginica (Gmelin) while the ivory barnacle Balanus eburneus (Gould) predominates on pilings beyond 10 m. This pattern of horizontal zonation reflects different settlement: barnacles and oysters settle in areas of high and low water motion, respectively. High water motion promotes barnacle growth, but has no effect on oyster growth. The higher settlement of barnacles onto substrata in higher water motion appears to be a combination of arrival rates to these sites and a preference for these areas. Adult-larval interactions further enhance the degree of differential settlementASW,Galveston BayBalanus eburneusbiocenosiscolonizationCrassostreaCrassostrea virginicaD 04655 Invertebrates - generalDistributionecological zonationGalveston BaygrowthHabitat selectionhorizontal distributionintertidal environmentO 1070 BIOLOGICAL OCEANOGRAPHY/ ECOLOGYOystersQ1 01422 Environmental effectssettling behaviorSubstrataTexasUSAUSA,Texas,Galveston BaywaterJournal