90 



Fishery Bulletin 97(1), 1999 



et al.'^). Increased runoff in small streams could trans- 

 late into more available habitat for larvae, including 

 greater food availability (Bulak et al. 1997; Kellogg 

 et al.'*). Larger watercourses like the Hudson should, 

 on average, provide a more constant amount of suit- 

 able habitat between years. 



Further, we suggest that biotic controls on recruit- 

 ment, if not as easily assessed as temperature and 

 discharge, may play relatively greater roles in larger 

 estuaries than in smaller ones, or at least in those 

 systems with relatively predictable physical forcing. 

 Our results implicate biotic factors for one year class 

 of striped bass in the Hudson and are based on a 

 comprehensive approach that included careful obser- 

 vation of larvae and retrospective analysis of juve- 

 nile early life histories. Had we not carried out the 

 retrospective analysis, we likely would have pre- 

 dicted that later cohorts would have had the great- 

 est recruitment potential. 



Acknowledgments 



We thank K. Hattala, A. Kahnle, and K. McKown, 

 New York Department of Environmental Conserva- 

 tion, for providing juvenile striped bass. E. Houde 

 and D. Secor, Chesapeake Biological Laboratory, and 

 E. Rutherford, University of Michigan, provided help- 

 ful advice on otoliths and general analysis. Three 

 anonymous reviewers gave constructive comments. 

 Support for this work was provided by the Hudson 

 River Foundation, New York Sea Grant, and by a 

 Tibor T. Polgar fellowship. 



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