Russ Hopcroft

Publications

Bucklin, A., R.R. Hopcroft, K.N. Kosobokova, L.M. Nigro, B.D. Ortman, C.J. Sweetman and R.M. Jennings (in press) DNA barcoding of Arctic Ocean holozooplankton for species identification and recognition Deep-Sea Res.II.

Hopcroft, R.R. & K.N. Kosobokova (in press). Distribution and egg production of Pseudocalanus species in the Chukchi Sea. Deep-Sea Res. II.

Hopcroft, R.R. & K.N. Kosobokova (accepted) Zooplankton community patterns in the Chukchi Sea during summer 2004. Deep-Sea Res. II.

Raskoff, K.A., R.R. Hopcroft, K.N. Kosobokova, J.E. Purcell & M. Youngbluth (in press). Jellies under ice: ROV observations from the 2005 Hidden Ocean Expedition. Deep-Sea Res.II.

Purcell, J.E., T.E. Whitledge, K.N. Kosobokova, & R.R. Hopcroft (in press). Distribution, abundance, and predation effects of epipelagic ctenophores and jellyfish in the western Arctic Ocean. Deep-Sea Res.II.

Jaspers, C., T.G. Nielsen, J. Carstensen, R.R. Hopcroft, and E.F. Møller. 2009. Mesozooplankton distribution across the Southern Indian Ocean with emphasis on the role of Larvaceans. J. Plankton Res. 31: 525-540.

Bell, J.L., & R.R. Hopcroft. 2008. Assessment of ZooImage as a tool for the classification of zooplankton. J. Plankton Res. 30: 1351-1367

Bluhm, B. A., R. Gradinger, F. Hüttmann, R.R. Hopcroft, A. Grebuk & B.I. Sirenko. 2008. Ein Zensus des Marinen Lebens in der Arktis. Biol. unserer Zeit 38: 40-49.

Davis, C. S. and R.R. Hopcroft. 2008. The drifters. Ocean Geogr. Mag., July 2008, 23-40.

Liu, H. & R.R. Hopcroft. 2008. Growth and development of Pseudocalanus spp. in the northern Gulf of Alaska. J. Plankton Res. 30: 923-935

Pinchuk, A.I., K.O. Coyle & R.R. Hopcroft. 2008. Climate-related variability in abundance and reproduction of euphausiids in the northern Gulf of Alaska in 1998-2003. Prog. Oceanogr. 77: 203-216.

Liu, H. & R.R. Hopcroft. 2007. A comparison of seasonal growth and development of the copepods Calanus marshallae and C. pacificus in the northern Gulf of Alaska. J. Plankton Res. 29: 569-581.

Kosobokova, K.N., H.-J. Hirche & R.R. Hopcroft. 2007. Egg production of deep-water copepods in the Arctic Ocean. Mar. Biol. 151:919-934.

Pinchuk, A.I. & R.R. Hopcroft. 2007. Seasonal variations in the growth rate of euphausiids (Thysanoessa inermis, T. spinifera, and Euphausia pacifica) from the northern Gulf of Alaska. Mar. Biol. 151: 257-269

Kimmerer, W.J., A.G. Hirst, R.R. Hopcroft, & A.D. McKinnon. 2007. Measurement of juvenile copepod growth rates: corrections, inter-comparisons and recommendations. Mar. Ecol. Prog. Ser. 336:187-202.

Liu, H. & R.R. Hopcroft. 2006. Growth and development of Metridia pacifica in the northern Gulf of Alaska. J. Plankton Res. 28: 769-781

Pinchuk, A.I. & R.R. Hopcroft. 2006. Reproduction and early development of Thysanoessa inermis and Euphausia pacifica (Crustacea: Euphausiacea) in the northern Gulf of Alaska. J. Exp. Mar Biol. Ecol. 332:206-215.

Liu, H. & R.R. Hopcroft. 2006. Growth and development of Neocalanus flemingeri/plumchrus in the northern Gulf of Alaska: validation of the artificial cohort method in cold waters. J. Plankton Res. 28: 87-101.

Crane, K., J. Potter & R.R. Hopcroft. 2005. NOAA’s Arctic Exploration Program. Arctic Res. U.S. 19: 3-10

Hopcroft, R.R., & B.H. Robison. 2005. New mesopelagic larvaceans in the genus Fritillaria from Monterey Bay, California. J. Mar. Biol. Assoc. 85: 665-678.

Napp, J.M., R.R. Hopcroft, C.T. Baier & C. Clarke 2005. Distribution and species-specific egg production of Pseudocalanus in the Gulf of Alaska. J. Plankton Res. 27: 415-426.

Slater, L.M. & R.R. Hopcroft (2005) Development, growth, and egg production of Centropages abdominalis in the subarctic Pacific. J. Plankton Res. 27: 71-78. [Abstract] [PDF]

Hopcroft, R.R., C. Clarke, A.G. Byrd & A.I. Pinchuk (2005) The paradox of Metridia spp. egg production rates: A new technique and measurements from the coastal Gulf of Alaska. Mar. Ecol. Prog. Ser. 286: 193-201.

Hopcroft, R.R., C. Clarke, R.J. Nelson, & K.A. Raskoff (2005) Zooplankton Communities of the Arctic's Canada Basin: the contribution by smaller taxa. Polar Biol. 28: 197-206.

Raskoff, K.A., J.E. Purcell & R.R. Hopcroft (2005) Gelatinous zooplankton of the Arctic Ocean: in situ observations under the ice. Polar Biol. 28: 207-217.

Hopcroft, R.R. (2005) Diversity in larvaceans: How many species? In: Response of marine ecosystems to global change: ecological impact of appendicularians. Gorsky, G, M.J. Youngbluth & D. Deibel(eds), NATO scientific Series. Gordon Scientific Publishers: pp 45-57.

Rose, K., J.C. Roff & R.R. Hopcroft. (2004). Production of Penilia avirostris in Kingston Harbour, Jamaica. J. Plankton Res. 26:605-615. [PDF]

Hopcroft, R.R. (2003). Spineless wonders: the pelagic fauna. Current: J. Mar. Ed. 19: 10-12.

Hopcroft, R.R., & J.C. Roff. (2003). Response of tropical marine phytoplankton communities to manipulations of nutrient concentration and grazing pressure. Bull. Mar. Sci.73: 397-420.

Persad, G., R.R. Hopcroft, M.K. Webber & J.C.Roff. (2003) Abundance, biomass and production of ctenophores and medusae off Kingston Jamaica. Bull. Mar. Sci. 73: 379-396.

Hopcroft, R.R., C. Clarke & F.P. Chavez. 2002. Copepod communities in Monterey Bay during the 1997 to 1999 El Niño and La Niña. Prog. Oceanogr. 54:251-263. [PDF]

Hopcroft, R.R. 2002. Comparison of plankton size spectra from net tow samples and OPC measurements in marine waters. pp. 7-11. In: M. Zhou & K. Tande (ed.) Optical Plankton Counter Workshop. GLOBEC Report No. 17, 17-20 June 2001, Tromso, Norway.

Nielsen, T.G., E.F. Møller, S. Satapoomin, M. Ringuette & R.R. Hopcroft. 2002. Egg hatching rate of the cyclopoid copepod Oithona similis in arctic, and temperate waters. Mar. Ecol. Prog. Ser. 236:301-306

Weingartner, T.J. et al. (R.R. Hopcroft among 18 others) 2002. The Northeast Pacific GLOBEC program: coastal Gulf of Alaska. Oceanography 15:48-63. [PDF]

Marine Zooplankton Colloquium 2. 2001. (R.R. Hopcroft among 40 contributers) Future marine zooplankton research—a perspective. Mar. Ecol. Prog Ser. 222:297-308.

Hopcroft, R.R., F.P. Chavez & J.C. Roff. 2001. Size paradigms in copepod communities: a re-examination. Hydrobiologia 453/454: 133-141

Hopcroft, R.R., & B.H. Robison. 1999. A new mesopelagic larvacean, Mesochordaeus erythrocephalus, sp. nov., from Monterey Bay, with description of its filtering house. J. Plankton Res. 21:1923-1937.

Hopcroft, R.R., & J.C. Roff. 1998. Zooplankton growth rates: the influence of female size and resources on egg production of tropical marine copepods. Mar. Biol. 132: 79-86.

Hopcroft, R.R., & J.C. Roff. 1998. Zooplankton growth rates: the influence of size in nauplii of tropical marine copepodites. Mar. Biol. 132: 87-96.

Hopcroft, R.R., & J.C. Roff. 1998. Production of tropical larvaceans in Kingston Harbour, Jamaica: are we ignoring an important secondary producer? J. Plankton Res. 20: 557-569.

Hopcroft, R.R., J.C. Roff. & H.A. Bouman. 1998. Zooplankton growth rates: larvaceans of the genus Appendicularia, Fritillaria and Oikopleura from tropical waters. J. Plankton Res. 20: 539-555.

Hopcroft, R.R., J.C. Roff & D. Lombard. 1998. Production of tropical copepods in nearshore waters off Kingston, Jamaica: the importance of small species. Mar. Biol. 130: 593-604.

Hopcroft, R.R., J.C. Roff, M.K. Webber, & J.D.S. Witt. 1998. Zooplankton Growth Rates: the influence of size and resources in tropical marine copepodites. Mar. Biol. 132: 67-77.

Turner, J.T., R.R. Hopcroft, J.A. Lincoln, C. Sassman Huestis, P.A. Tester, & J.C. Roff. 1998. Zooplankton feeding ecology: grazing by marine copepods and cladocerans upon cyanobacteria from Kingston Harbour, Jamaica. Mar.Ecol. 19: 195-208.

Hopcroft, R.R., & J.C. Roff. 1996. Zooplankton growth rates: diel egg production in the copepods Oithona, Euterpina and Corycaeus from tropical waters. J. Plankton Res. 18: 789-803.

Hopcroft, R.R., & J.C. Roff. 1995. Zooplankton Growth Rates: Extraordinary production by the larvacean Oikopleura dioica in tropical waters. J. Plankton Res. 17: 205-220.

Roff, J.C., J.T. Turner, M.K. Webber, & R.R. Hopcroft. 1995. Bacterivory by tropical copepod nauplii: extent and possible significance. Mar. Micro. Ecol. 9: 165-175.

Lynn, D.H., J.C. Roff & R.R. Hopcroft. 1991. The annual cycle of abundance and biomass of aloricate ciliates in tropical neritic waters off Kingston, Jamaica. Mar. Biol. 110: 437-448.

Hopcroft, R.R., & J.C. Roff. 1990. Phytoplankton size fractions in a tropical neritic ecosystem near Kingston, Jamaica. J. Plankton Res. 12: 1069-1088.

Hopcroft, R.R., J.C. Roff & J.A. Berges. 1990. Size-fractionated sedimentation in a tropical neritic ecosystem near Kingston, Jamaica. Contin. Shelf Res. 10: 795-806.

Roff, J.C., R.R. Hopcroft, C. Clarke, L.A. Chisholm, D.H. Lynn, & G.L. Gilron. 1990. Structure and energy flow in a tropical neritic planktonic community off Kingston, Jamaica. In: Trophic relationships in the marine environment. (Proc. 24th Europ. Mar. Biol. Symp.) Barnes,M. and R.N. Gibson (eds), Aberdeen University Press. pp.266-280.

Roff, J.C. & R.R. Hopcroft. 1986. High precision microcomputer based measuring system for ecological research. Can. J. Fish. Aquat. Sci. 43: 2044-2048.

Hopcroft, R.R., D.B. Ward & J.C. Roff. 1985. The relative significance of body surface and cloacal respiration in Psolus fabricii (Holothuroidea: Dendrochirotida). Can. J. Zool. 63: 2878-2881.

Roff, J.C. & R.R. Hopcroft. 1985. Determination of efficiency of sediment traps with respect to their size and aspect ratio, and water velocity and particle size. Final report for Department of Supplies and Services, Government of Canada, Contract #01SE KW405-4-0039.

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