The Wahle Lab







Wahle Lab                                                                                                


Quick links to UMaine:

 Darling Marine Center

 School of Marine Sciences

 University of Maine




* Student authors

† Selected as Editors’ Choice in Science 323:1406b (3/13/09)

Hovel, K. and R.A. Wahle. 2010. Consistent effects of habitat fragmentation on American lobster movement across a gradient of predation risk and shelter competition. Ecology In press.

Incze, L., H. Xue, N. Wolff, D. Xu, C. Wilson, R. Steneck, R. Wahle, P. Lawton, N. Pettigrew, and Y. Chen. 2010. Connectivity of lobster (Homarus americanus) populations in the coastal Gulf of Maine: part II. Coupled biophysical dynamics. Fisheries Oceanogr. 19: 1-20

Geraldi, N.R.*, Wahle, R.A. Dunnington, M.J. 2009. Habitat effects on American lobster catch and movement: Insights from geo-referenced trap arrays, seabed mapping, and tagging. Can. J. Fish. Aquat. Sci. 66: 460-470.

† Wahle, R.A., M. Gibson, M.J. Fogarty. 2009. Distinguishing disease impacts from larval supply effects in a lobster fishery collapse. Mar. Ecol. Prog. Ser. 376: 185–192. doi: 10.3354/meps07803

Wahle, R.A., C. Bergeron*, C. Wilson, M. Parkhurst. 2009. A vessel-deployed passive post-larval collector for the American lobster. New Zealand J. Mar. Freshw. Res. 43: 465 -474.

Wahle, R.A., C.E. Bergeron*, A. Chute, Y. Chen, L. Jacobson. 2008. Northwest Atlantic deep-sea red crab before and after the onset of harvesting. ICES J. Mar. Sci.65: doi:10.1093/icesjms/fsn058

Frumhoff, P.C., J.J. McCarthy, J.M. Melillo, S.C. Moser, and D.J. Wuebbles. 2007. Confronting Climate Change in the U.S. Northeast: Science, Impacts, and Solutions. Synthesis report of the Northeast Climate Impacts Assessment (NECIA). Cambridge, MA: Union of Concerned Scientists (UCS). (Member of contributing team of white paper authors)

Selgrath, J., K*. Hovel, R. Wahle. 2007. Effects of habitat edges on American lobster abundance & survival. J. Exp. Mar. Biol. Ecol. 353: 253–264

O’Donnell, K.P.*, Wahle, R.A., Dunnington, M.J., M. Bell. 2007. Spatially referenced trap arrays detect sediment disposal impacts in a New England estuary. Mar. Ecol. Prog. Ser. 348: 249–260.

Wahle, R.A. (Guest Editor) 2006. Proceedings of Sea Grant Science Symposium 2005: Lobsters as model organisms at the interface of ecology, behavior and fisheries. Journal of Crustacean Biology 26 (4).

Incze, L. S, R. A. Wahle, N. Wolff, C. Wilson, R. Steneck, E. Annis*, P. Lawton, H. Xue, and Y. Chen. 2006. Early life history and a modeling framework for lobster (Homarus americanus) populations in the Gulf of Maine. Journal of Crustacean Biology: 26: 555-564.

Wahle, R.A. and Fogarty, M.J. 2006. Chapter 1 - Growth. In: B. Phillips (ed.), Lobsters: Biology, management, aquaculture and fisheries. Sinauer & Assoc. Pp. 1-44.

Gaudette, J.*, R. A. Wahle, R.A., and J. Himmelman. 2006. Spawning events in small and large populations of the sea urchin, Strongylocentrotus droebachiensis. as recorded using fertilization assays. Limnol. & Oceanogr. 51:1485-1496.

Gibson, M. & Wahle, R.A. 2005. Disease impacts on recruitment to coastal Rhode Island lobster populations. Proceedings of Workshop on Shell Disease, March 2005. New England Aquarium Publication .

Dunnington, M.J., R.A. Wahle, M.C. Bell, N.R. Geraldi*. 2005. Evaluating local population dynamics of the American lobster, Homarus americanus, with trap-based mark-recap ture methods and seabed mapping. N. Z. J. Mar. Freshw. Res. 39: 1253-1276.

Wahle, RA., L.S.Incze, M. Fogarty. 2004. First projections of American lobster Homarus americanus recruitment from a settlement index. Bull. Mar. Sci. 74: 101-114.

Incze, L.S., Wolff, N., Wahle, R.A. 2003. Can scientific observations of early life stages be scaled up to the level of a fished population? A case study using Homarus americanus. Fish. Res. 65: 33-46.

Wahle, R.A. 2003. Revealing the stock-recruitment relationship in lobsters and crabs: Is experimental ecology the key? Fish. Res. 65: 3-32.

Wahle, R.A. and A. Gilbert* 2002. Detecting spawning by the green sea urchin (Strongylocentrotus droebachiensis) with time-integrated fertilization assays. Mar. Biol. 140: 375-382.

Wahle, R.A., O. Tully, and V. O’Donovan*. 2001. Environmentally mediated crowding effects on growth, survival and metabolic rate of juvenile American lobster (Homarus americanus). Mar. Freshw. Res. 52: 1157-1166.

Castro, K., Cobb, J.S., Wahle, R.A., Catena, J. 2001. Habitat addition and stock enhancement for American lobsters, Homarus americanus. Mar. Freshw. Res. 52: 1253-1261.

Wahle, R.A. 2000. Fisheries in a sea of change: Ecology and oceanography of New England’s fishing grounds.Proceeding of the Sea Grant symposium on the history and future of New England’s offshore fishing grounds. Connecticut College, April, 1999. Northeast Naturalist. 7: 317-328.

Incze, L.S., R.A. Wahle, A. Palma*. 2000. Advection and settlement rates in a benthic invertebrate: recruitment to first benthic stage in Homarus americanus. ICES J. Mar. Sci. 57: 430-437.

Cobb, J.S., M. Clancy*, R.A. Wahle. 1999. In: L.R. Benaka (ed.) Fish habitat: Essential Fish habitat and rehabilitation. Habitat-based assessment of lobster abundance: a case study of an oil spill. Proceedings of the Sea Grant symposium on fish habitat, Hartford, CT 26-27 Aug. 1998. Am. Fish. Soc. Symp. 22: 285-298.

Wahle, R.A. and H. Peckham.1999. Density-related reproductive trade-offs in the green sea urchin, Strongylocentrotus droebachiensis. Mar. Biol. 134:127-137.

Wahle, RA 1998. A cradle-to-grave approach to lobster stock assessment and enhancement. In : Gendron, L. (ed) Proceedings of a workshop on lobster stock enhancement, Magdalen Islands, Quebec. Oct. 29-31, 1997. Can. Industry Rept Fish. Aquat. Sci. 244: 85-92.

James-Pirri, M.J.*, J.S. Cobb, and R.A. Wahle. 1998. Influence of settlement time and size on post-settlement growth in the American lobster (Homarus americanus). Can. J. Fish. Aquat. Sci. 55: 2436-2446

Palma, A. T.*, R. A.Wahle, and R. S.Steneck. 1998 . Different early post-settlement strategies between American lobsters (Homarus americanus) and rock crabs (Cancer irroratus) in the Gulf of Maine. Mar.Ecol. Prog. Ser. 162: 215-225.

Wahle, R.A. 1997. Consequences of fishing, with regard to lobster fisheries: report from a workshop. Mar & Freshw. Res. 48: 1115-1120.

Incze, L.S., R.A. Wahle, JS. Cobb. 1997. Quantitative relationships between postlarval supply and benthic recruitment in the American lobster. Mar & Freshw. Res. 48: 729-743.

Wahle, R.A. and L.S. Incze. 1997. Pre- and post-settlement processes in recruitment of the American lobster. J. Exp. Mar. Biol. Ecol. 217: 179-207.

Bertness, M., S. Gaines and R.A.Wahle. 1996. Wind-driven settlement patterns in the acorn barnacle, Semibalanus balanoides Mar. Ecol. Prog. Ser. 137: 103-110.

Wahle, R.A., O.Tully, and V. O'Donovan*. 1996.Lipofuscin as an indicator of age in crustaceans: analysis of the pigment in the lobster, H. americanus. Mar. Ecol. Prog. Ser. 138: 117-123.

Wahle, R.A. 1995. A trans-Atlantic perspective on lobster recruitment and enhancement. Proceedings Workshop on Lobster Enhancement. Norwegian Inst. Marine Research. June 1995.

Wahle, R.A., L.S. Incze, and J.S. Cobb. 1994. Targeting lobster enhancement: understanding the interaction of habitat and larval supply. Proceedings Workshop on Fisheries Enhancement. University College Galway, Ireland. April, 1994.

Cobb, J.S., & R.A. Wahle.1994. Early life history and recruitment processes of clawed lobsters: a review. Crustaceana 67: 1-25.

Wahle, R.A. 1993. Gimme shelter. Natural History 102: 42-49.

Wahle, R.A. 1993. Recruitment to American lobster populations along an estuarine gradient. Estuaries 16: 731-738.

Wahle, R.A. 1992. Body-size-dependent anti-predator mechanisms of the American lobster and a model of their trade-offs. Oikos 65:52-60

Wahle, R. A. & R.S. Steneck. 1992. Habitat restrictions in early benthic life: experiments on substratum selection and in situ predation with the American lobster. J. Exp. Mar. Biol. Ecol. 157: 91-114.

Wahle, R.A. 1992. Substratum constraints on body size and the behavioral scope of shelter use in the American lobster.J. Exp. Mar. Biol. Ecol. 159: 59-75.

Williams, A.B., & R.A. Wahle. 1992. How to distinguish juvenile stages of Jonah and Atlantic rock crabs,Cancer borealis & C. irroratus. J. Crust. Biol. 12: 464-466.

Wahle, R. A. & R.S. Steneck. 1991. Recruitment habitats and nursery grounds of the American lobster (Homarus americanus): a demographic bottleneck? Mar. Ecol. Prog. Ser. 69: 231-243

Incze, L. and R.A. Wahle. 1991. Recruitment from pelagic to early benthic phase in lobsters Homarus americanus. Mar. Ecol. Prog. Ser. 79: 77-87.

Wahle, R. A. 1990. Recruitment, habitat selection, and the impact of predators on the early benthic phase of the American lobster (Homarus americanus Milne Edwards). PhD dissertation. University of Maine. 137 pp.

Wahle, R. A. 1985. Feeding ecology of Crangon franciscorum and Crangon nigricauda in San Francisco Bay, California. J. Crustacean Biol. 52: 311-326.

TECHNICAL REPORTS (most recent first)

Wahle, R.A. 2006. Implications of climate change for American lobster distributions in the northeast United States over the next century. White paper submitted to Union of Concerned Scientists, Northeast Climate Impacts Assessment Team.

Northeast Fisheries Science Center. 2006. Section D. Assessment of deep-sea red crab. In: 43rd Northeast Regional Stock Assessment Workshop (43rd SAW): 43rd SAW assessment report. US Dep. Commer, Northeast Fish. Sci. Cent. Ref. Doc. 06-25. 400 pp. (R. Wahle led Stock Assessment Report Committee)

Wahle, R.A. and Gaudette, J. 2004. Sea urchin conservation areas in Maine: winter survey results 2000-2003. Final Project Report submitted to Maine Department of Marine Resources

Wahle, R.A., O’Donnell, K.P., Dunnington, M.J., Bell, M. 2003. Impact of dredged sediment disposal on lobster and crab abundance and movements at the Rockland disposal site. US Army Corps of Engineers, New England District. Disposal Monitoring System. DACW33-03-D-007 TO5 / 09000-351-260

Wahle, R.A. 2002, -03, -04. Update 2001, -02, -03: New England lobster settlement index. Reports to Maine Department of Marine Resources, Rhode Is. Dept. Environmental Management, and Maine Lobstermens Association.

Wahle, R.A. 2000. A larval settlement index for forecasting trends in the American lobster fishery. Final Report to Maine Department of Marine Resources, Lobster Advisory Council.

Wahle, R.A. & R. Langton. 1999. Acoustic tagging of reared Atlantic cod. Final Project Report to the Island Institute.

Wahle, R.A. 1999. Impact of sea urchin dragging on the sea bed. Final Project Report to Maine Department of Marine Resources Sea Urchin Advisory Committee.

Wahle, R.A. 1998. Density-related reproductive trade-offs in the Green Sea Urchin, Strongylocentrotus droebachiensis and implications to the Gulf of Maine fishery. Final Project Report to Maine Department of Marine Resources Sea Urchin Advisory Committee.

Beatty, L., B. Nowicki, A. Keller, R. Wahle, C. Labash, & P. August. 1993. A plan for inventory and monitoring of submerged aquatic resources at Cape Cod National Seashore. Final Report to the National Park Service

Wahle, R.A. 1991. The American lobster in Narragansett Bay: patterns of benthic recruitment, adult populations, and fishing effort. Final Report submitted to the Narragansett Bay Project.

Steneck, R.S., R.L. Vadas, I.R. Davison, I. Babb, R.A. Wahle, 1990. Changes in coastal food webs and benthic community structure in the Gulf of Maine due to fisheries induced declines in large predatory fishes. NURC, Annual Report.