Powell et al.: Multiple stable reference points in oyster populations: Crassostrea virginica in Delaware Bay 
131 
Mann, R., and D. A. Evans. 
1998. Estimation of oyster, Crassostrea virginica , stand- 
ing stock, larval production and advective loss in relation 
to observed recruitment in the James River, Virginia. J. 
Shellfish Res. 17:239-253. 
2004. Site selection for oyster habitat rehabilitation 
in the Virginia portion of the Chesapeake Bay: a 
commentary. J. Shellfish Res. 23:41-49. 
Mann, R., J. S. Rainer, and R. Morales-Alamo. 
1994. Reproductive activity of oysters, Crassostrea virgi- 
nica (Gmelin, 1791) in the James River, Virginia, during 
1987-1988. J. Shellfish Res. 13:157-164. 
Maunder, M. N. 
2003. Is it time to discard the Schaefer model from 
the stock assessment scientist’s toolbox. Fish. Res. 
61:145-149. 
Maurer, D., and L. Watling. 
1973. The biology of the oyster community and its associ- 
ated fauna in Delaware Bay. In Delaware Bay Report 
series vol. 6 (D. F. Polis, ed.), 97 p. College of Marine 
Studies, Univ. Delaware, Lewes, DE. 
Maurer, D., L. Watling, and R. Keck. 
1971. The Delaware oyster industry: a reality? Trans. 
Am. Fish. Soc. 100:100-111. 
May, R. M., J. R. Beddington, J. W. Horwood, and J. G. Shepherd. 
1978. Exploiting natural populations in an uncertain 
world. Math. Biosci. 42:219-252. 
McCann, K. S., L. W. Botsford, and A. Hasting. 
2003. Differential response of marine populations to cli- 
mate forcing. Can. J. Fish. Aquat. Sci. 60:971-985. 
McGarvey, R., F. M. Serchuk, and I. A. McLaren. 
1993. Spatial and parent-age analysis of stock-recruit- 
ment in the Georges Bank sea scallop ( Placopecten 
magellanicus ) population. Can. J. Fish. Aquat. Sci. 
50:564-574. 
Milke, L. M., and V. S. Kennedy. 
2001. Mud crabs (Xanthidae) in Chesapeake Bay: claw 
characteristics and predation on epifaunal bivalves. In- 
vertebr. Biol. 120:67-77. 
Moore, H. F. 
1911. Condition and extent of the natural oyster beds 
of Delaware. U.S. Bur. Fish. 745:1-29. 
Myers, R. A., and N. J. Barrowman. 
1996. Is fish recruitment related to spawner abun- 
dance? Fish. Bull. 94:707-724. 
Nixon, S. W., S. Granger, B. A. Buckley, M. Lamont, and 
B. Rowell. 
2004. A one hundred and seventeen year coastal water 
temperature record from Woods Hole, Massachusetts. 
Estuaries 27:397-404. 
Osman, R. W., R. B. Whitlatch, and R. N. Zajac. 
1989. Effects of resident species on recruitment into a 
community: larval settlement versus post-settlement 
mortality in the oyster Crassostrea virginica. Mar. 
Ecol. Prog. Ser. 54:61-73. 
Oviatt, C. A. 
2004. The changing ecology of temperate coastal waters 
during a warming trend. Estuaries 27:895-904. 
Paloheimo, J. E. 
1980. Estimation of mortality rates in fish popula- 
tions. Trans. Am. Fish. Soc. 109:378-386. 
Paynter, K. T. 
1996. The effects of Perkinsus marinus infection on physi- 
ological processes in the eastern oyster, Crassostrea 
virginica. J. Shellfish Res. 15:119-125. 
Peterman, R. M. 
1977. A simple mechanism that causes collapsing stabil- 
ity regions in exploited salmonid populations. J. Fish. 
Res. Board Can. 34:1130-1142. 
Peterson, C. H. 
1984. Does a rigorous criterion for environmental identity 
preclude the existence of multiple stable points? Am. 
Nat. 124:127-133. 
Peterson, C. H., and R. Black. 
1987. Resource depletion by active suspension feed- 
ers on tidal flats: influence of local density and tidal 
elevation. Limnol. Oceanogr. 32:145-166. 
Peterson, C. H., F. J. Fodrie, H. C. Summerson, and S. P. Powers. 
2001. Site-specific and density-dependent extinction of 
prey by schooling rays: generation of a population sink 
in top-quality habitat for bay scallops. Oecologia ( Berl.) 
129:349-356. 
Peterson, C. H., and H. C. Summerson. 
1992. Basin-scale coherence of population dynamics of an 
exploited marine invertebrate, the bay scallop: implica- 
tions of recruitment limitation. Mar. Ecol. Prog. Ser. 
90:257-272. 
Pierce, G. J., and J. G. Ollason. 
1987. Eight reasons why optimal foraging theory is a 
complete waste of time. Oikos 49:111-117. 
Powell, E. N., K. A. Ashton-Alcox, S. E. Banta, and A. J. 
Bonner. 
2001. Impact of repeated dredging on a Delaware Bay 
oyster reef. J. Shellfish Res. 20:961-975. 
Powell, E. N., K. A. Ashton-Alcox, J. A. Dobarro, M. Cummings, 
and S. E. Banta. 
2002a. The inherent efficiency of oyster dredges in survey 
mode. J. Shellfish Res. 21:691-695. 
Powell, E. N., K. A. Ashton-Alcox, and J. N. Kraeuter. 
2007. Reevaluation of eastern oyster dredge efficiency 
in survey mode: application in stock assessment. 
N. Am. J. Fish. Manag. 27:492-511. 
Powell, E. N., K. A. Ashton-Alcox, J. N. Kraeuter, S. E. Ford, and 
D. Bushek. 
2008. Long-term trends in oyster population dynamics in 
Delaware Bay: regime shifts and response to disease. J. 
Shellfish Res. 27:729-755. 
Powell, E. N., E. A. Bochenek, J. M. Klinck, and E. E. Hofmann. 
2002b. Influence of food quality and quantity on the 
growth and development of Crassostrea gigas larvae: a 
modeling approach. Aquaculture 210:89-117. 
2004. Influence of short-term variations in food on sur- 
vival of Crassostrea gigas larvae: a modeling study. J. 
Mar. Res. 62:117-152. 
Powell, E. N., J. J. Gendek, and K. A. Ashton-Alcox. 
2005. Fisherman choice and incidental catch: size fre- 
quency of oyster landings in the New Jersey oyster 
fishery. J. Shellfish Res. 24:469-476. 
Powell, Eric N., John M. Klinck, K. A. Ashton-Alcox, and John 
N. Kraeuter. 
2009. Multiple stable reference points in oyster 
populations: implications for reference point-based 
management. Fish. Bull. 107:133-147. 
Powell, E. N., J. M. Klinck, S. E. Ford, E. E. Hofmann, and 
S. J. Jordan. 
1999. Modeling the MSX parasite in Eastern oyster 
( Crassostrea virginica) populations. III. Regional appli- 
cation and the problem of transmission. J. Shellfish 
Res. 18:517-537. 
Powell, E. N., J. M. Klinck, and E. E. Hofmann. 
1996. Modeling diseased oyster populations. II. Trigger- 
