James Thorp

Professor, Ecology and Evolutionary Biology
Senior Scientist, Kansas Biological Survey
Ph.D., North Carolina State, 1975
Primary office:
785-864-1532
Higuchi Hall


Dr. Thorp's research centers on the community and ecosystem levels of aquatic ecology.

See Dr. Thorp's page on the KU River Ecology site for more information.

Selected Publications

  • Bowes, R. E., and J. H. Thorp. 2015. Consequences of employing amino acid vs. bulk-tissue, stable isotope analysis: a laboratory trophic position experiment. Ecosphere 6(1): 12.
  • Thorp, J. H., D. C. Rogers, and W. W. Dimmick.  2014. Ch. 1: Introduction to invertebrates of inland waters. In: Thorp, J. H. and D. C. Rogers (eds.), Freshwater Invertebrates, 4th edition, Vol 1, Ecology and General Biology Academic Press.
  • Thorp, J. H., A. P. Covich, and D. C. Rogers.  2014. Ch. 2: Overview of inland water habitats. In: Thorp, J. H. and D. C. Rogers (eds.), 2015.  Freshwater Invertebrates, 4th edition, Vol 1: Ecology and General Biology Academic Press.
  • Rogers, D. C., and J. H. Thorp.  2014.  Ch. 3: Collection and culturing techniques. In: Thorp, J. H. and D. C. Rogers (eds.), 2015.  Freshwater Invertebrates, 4th edition, Vol 1: Ecology and General Biology Academic Press
  • Thorp, J. H..  2014.  Ch. 4: Functional relationships of aquatic invertebrates. In: Thorp, J. H. and D. C. Rogers (eds.), 2015.  Freshwater Invertebrates, 4th edition, Vol 1: Ecology and General Biology Academic Press.
  • Thorp, J. H. and D. C. Rogers.  2014.  Ch. 24: Introduction to the phylum Arthropoda. In: Thorp, J. H. and D. C. Rogers (eds.), 2015.  Freshwater Invertebrates, 4th edition, Vol 1: Ecology and General Biology Academic Press.
  • Thorp, J. H., D. C. Rogers, and A. P. Covich. Ch 27:  Introduction to Crustacea. In: Thorp, J. H. and D. C. Rogers (eds.), 2015.  Freshwater Invertebrates, 4th edition, Vol 1: Ecology and General Biology Academic Press.
  • Thorp, J. H. and B. J. O’Neill.  Ch. 33: Subphylum Hexapoda, introduction to insects and Collembola. In: Thorp, J. H. and D. C. Rogers (eds.), 2015.  Freshwater Invertebrates, 4th edition, Vol 1: Ecology and General Biology Academic Press.
  • McCluney, K. E., N. L. Poff, M.A. Palmer, J. H. Thorp, G.C. Poole, B.S. Williams, M.R. Williams, and J.S. Baron. 2014. Riverine macrosystems ecology: sensitivity, resistance, and resilience of whole river basins with human alterations. Frontiers in Ecology and the Environment 12(1): 48-58.
  • O’Neill, B.J. and J.H. Thorp. 2014. Untangling food-web structure in an ephemeral ecosystem. Freshwater Biology 59: 1462-1473.
  • Bowes, R. E., M. H. Lafferty, and J. H. Thorp. 2014. Less means more: nutrient stress leads to higher δ15N ratios in fish. Freshwater Biology 59: 1926-1931.
  • Carroll, T. M. and J. H. Thorp. 2014. Ecotonal shifts in diversity and functional traits in zoobenthic communities of karst springs. Hydrobiologia 738: 1-20.
  • Thorp, J. H., J. E. Flotemersch, B. S. Williams, and L. A. Gabanski. 2013. "Critical role for hierarchical geospatial analyses in the design of fluvial research, assessment, and management" Environmental Monitoring and Assessment.
  • Williams, B. S., E. D’Amico, J. H. Kastens, J. H. Thorp, J. E. Flotemersch, and M. C. Thoms. 2013. "Automated riverine landscape characterization: GIS-based tools for watershed-scale research, assessment, and management" Environmental Monitoring and Assessment.
 
 
 
  • O'Neill, B. J. and J. H. Thorp. 2011. "Zoobenthos of a sand bed river: Coping with hydrogeomorphic fluctuations" Journal of the North American Benthological Society. 30(2). 546-558.
  • Delong, M. D., J. H. Thorp, M. C. Thoms, and L. M. McIntosh. 2011. "Trophic niche dimensions of fish communities as a function of historical hydrological conditions in a plains river" River Systems. 19. 177-187.
  • Thorp, J. H. and D. C. Rogers. 2011. "Field guide to freshwater invertebrates of North America" 274.
  • O'Neill, B. J. and J. H. Thorp. 2011. "A simple channel complexity metric for analyzing river ecosystem responses" River Systems. 19(4). 327-335.
  • Sluss, T. D., J. D. Jack, and J. H. Thorp. 2011. "A comparison of sampling methods for riverine zooplankton" River Systems. 19(4). 315-326.
 
  • Thorp, J. H., G. A. Lamberti, and A. F. Casper. 2010. "St. Lawrence River" Field guide to Rivers of North America. edited by Benke, A. C. and C. E. Cushing. pages 418-435.
  • Thorp, J. H., J. E. Flotemersch, M. D. Delong, A. F. Casper, M. C. Thoms, F. Ballantyne, B. S. Williams, B. J. O'Neill, and C. S. Haase. 2010. "Linking ecosystem services, rehabilitation, and river hydrogeomorphology" BioScience. 60(1). 67-74.
  • Covich, A. P., J. H. Thorp, and D. C. Rogers. 2010. "Introduction to the subphylum Crustacea" Ecology and classification of North American freshwater invertebrates. edited by Thorp, J. H. and A. P. Covich. (3). 695-723.
  • Thorp, J. H., A. P. Covich, and W. W. Dimmick. 2010. "Introduction to invertebrates of inland waters" Ecology and classification of North American freshwater invertebrates. edited by Thorp, J. H. and A. P. Covich. (3). 1-23.
 
  • Thorp, J. H. and A. P. Covich. 2010. "An overview of inland aquatic habitats" Ecology and classification of North American freshwater invertebrates. edited by Thorp, J. H. and A. P. Covich. (3). 25-47.
  • Delong, M. D. and J. H. Thorp. 2009. "Mollusc shell periostracum as an alternative to tissue in isotopic studies" Limnology and Oceanography: Methods. 7. 436-441.
 
  • Roach, K. A., J. H. Thorp, and M. D. Delong. 2009. "Influence of lateral gradients of hydrologic connectivity on trophic position of fishes in the Upper Mississippi River" Freshwater Biology. 54. 607-620.
 
 
 
 
  • Thorp, J. H., M. C. Thoms, and M. D. Delong. 2008. "The riverine ecosystem synthesis" 208.
  • Sluss, T. D., G. A. Cobbs, and J. H. Thorp. 2008. "Impact of turbulence on riverine zooplankton: A mesocosm experiment" Freshwater Biology. 53. 199-2010.
  • Moore, S. L. and J. H. Thorp. 2008. "Coping with hydrogeomorphic variations in a prairie river: Resiliency in young-of-the-year fishes" River Research and Applications. 24. 237-248.
 
  • Casper, A. F. and J. H. Thorp. 2007. "Diel and lateral patterns of zooplankton distribution in the St. Lawrence River" River Research and Applications. 23(1). 73-86.
  • Jack, J. D., W. Fang, and J. H. Thorp. 2006. "Vertical, lateral and longitudinal movement of zooplankton in a large river" Freshwater Biology. 51. 1646-1654.
  • Thorp, J. H., M. C. Thoms, and M. D. Delong. 2006. "The riverine ecosystem synthesis: Biocomplexity in river networks across space and time" River Research and Applications. 22(2). 123-147.
  • Delong, M. D. and J. H. Thorp. 2006. "Significance of instream autotrophs in trophic dynamics of the Upper Mississippi River" Oecologia. 147(1). 76-85.
  • Casper, A. F., J. H. Thorp, S. P. Davies, and D. L. Courtemanch. 2006. "Ecological responses of zoobenthos to dam removal on the Kennebec River, Maine, USA" Archiv für Hydrobiologie, Large Rivers. 16(4). 541-555.
  • Thorp, J. H. and S. Mantovani. 2005. "Zooplankton in turbid and hydrologically dynamic, prairie rivers" Freshwater Biology. 50(9). 1474-1491.
  • Hein, T., W. Reckendorfer, J. H. Thorp, and F. Schiemer. 2005. "The role of slackwater areas and the hydrologic exchange for biogeochemical processes in river corridors: Examples from the Austrian Danube" Archiv für Hydrobiologie, Suppl. 155. 425-442.
  • Thorp, J. H., G. A. Lamberti, and A. F. Casper. 2005. "St. Lawrence River" Rivers of North America. edited by Benke, A. C. and C. E. Cushing. 983-1028.
  • Buijse, A. D., F. Klijn, R. S. E. W. Leuven, H. Middelkoop, F. Schiemer, J. H. Thorp, and H. P. Wolfert. 2005. "Rehabilitation of large rivers: References, achievements and integration into river management" Archiv für Hydrobiologie, Suppl. 155. 715-738.
  • Thorp, J. H. and A. F. Casper. 2003. "Importance of biotic interactions in large rivers: An experiment with planktivorous fish, dreissenid mussels, and zooplankton in the St. Lawrence" River Research and Applications. 19. 265-279.
 
  • Thorp, J. H. and A. F. Casper. 2002. "Potential effects on zooplankton from species shifts in mussel planktivory: a field experiment in the St. Lawrence River" Freshwater Biology. 47. 107-119.
  • Jack, J. D. and J. H. Thorp. 2002. "Impacts of fish predation on an Ohio River zooplankton community" Journal of Plankton Research. 24(2). 119-127.
  • Thorp, J. H. and M. D. Delong. 2002. "Dominance of autochthonous autotrophic carbon in food webs of heterotrophic rivers" Oikos. 96(3). 543-550.
  • Thorp, J. H., J. E. Alexander, and G. A. Cobbs. 2002. "Coping with warmer, large rivers: A field experiment on potential range expansion of northern quagga mussels (Dreissena bugensis)" Freshwater Biology. 47(9). 1779-1790.
  • Delong, M. D., J. H. Thorp, K. S. Greenwood, and M. C. Miller. 2001. "Responses of consumers and food resources to a high magnitude, unpredicted flood in the upper Mississippi River basin" Regulated Rivers: Research and Management. 17(3). 217-232.
  • Covich, A. P. and J. H. Thorp. 2001. "Introduction to the subphylum Crustacea" Ecology and classification of North American freshwater invertebrates. edited by Thorp, J. H. and A. P. Covich. (2). 777-809.
  • Thorp, J. H. and A. P. Covich. 2001. "Introduction to freshwater invertebrates" Ecology and classification of North American freshwater invertebrates. edited by Thorp, J. H. and A. P. Covich. (2). 1-18.
  • Greenwood, K. S., J. H. Thorp, R. B. Summers, and D. L. Guelda. 2001. "Effects of an exotic bivalve mollusc on benthic invertebrates and food quality in the Ohio River" Hydrobiologia. 462. 169-172.
  • Greenwood, K. S. and J. H. Thorp. 2001. "Aspects of ecology and conservation of sympatric, prosobranch snails in a large river" Hydrobiologia. 455. 229-236.
  • Thorp, J. H. and A. P. Covich. 2001. "An overview of freshwater habitats" Ecology and classification of North American freshwater invertebrates. edited by Thorp, J. H. and A. P. Covich. (2). 19-41.
 
  • Bukaveckas, P. A., E. Jourdian, R. Koch, and J. H. Thorp. 2000. "Longitudinal gradients in nutrients and phytoplankton in the Ohio River" Verh. Internat. Verein. Limnol.. 27. 3107-3110.
  • Jack, J. D. and J. H. Thorp. 2000. "Effects of the benthic suspension feeder Dreissena polymorpha on zooplankton in a large river" Freshwater Biology. 44. 569-579.
  • Thorp, J. H., J. E. Alexander, B. L. Bukaveckas, G. A. Cobbs, and K. L. Bresko. 1998. "Responses of Ohio River and Lake Erie dreissenid molluscs to changes in temperature and turbidity" Can. J. Fish. Aquat. Sci. 55(1). 220-229.
  • Thorp, J. H., M. D. Delong, K. S. Greenwood, and A. F. Casper. 1998. "Isotopic analysis of three food web theories in constricted and floodplain regions of a large river" Oecologia. 117. 551-563.
  • Brown, K. M., J. E. Alexander, and J. H. Thorp. 1998. "Differences in the ecology and distribution of lotic pulmonate and prosobranch gastropods" American Malacological Bulletin. 14(2). 91-101.
  • Thorp, J. H., M. D. Delong, and A. F. Casper. 1998. "In situ experiments on predatory regulation of a bivalve mollusc (Dreissena polymorpha) in the Mississippi and Ohio Rivers" Freshwater Biology. 39. 649-661.
  • Summers, R. B., M. D. Delong, and J. H. Thorp. 1997. "Ontogenetic and temporal shifts in the diet of the amphipod Gammarus fasciatus in the Ohio River" Amer. Midl. Nat.. 137(2). 329-336.
  • Wehr, J. D. and J. H. Thorp. 1997. "Effects of navigation dams, tributaries, and littoral zones on phytoplankton of the Ohio River" Can. J. Fish. Aquat. Sci. 54. 378-395.
  • Wehr, J. D., S. P. Lonergan, and J. H. Thorp. 1997. "Concentrations and controls of dissolved organic matter in a constricted-channel region of the Ohio River" Biogeochemistry. 38. 41-65.
 
  • Summers, R. B., J. H. Thorp, J. E. Alexander, and R. D. Fell. 1996. "Respiratory adjustment of dreissenid mussels (Dreissena polymorpha and D. bugensis) in response to chronic turbidity" Can. J. Fish. Aquat. Sci. 53(7). 1626-1631.
  • Thorp, J. H., A. R. Black, J. D. Jack, and A. F. Casper. 1996. "Pelagic enclosures - modification and use for experimental study of riverine plankton" Archiv. für Hydrobiologie, Supplement 113. 10. 583-589.
 
  • Jack, J. D. and J. H. Thorp. 1995. "Daphnia lumholtzi: Appearance and likely impacts of an exotic cladoceran in the Ohio River" Trans. Kentucky Acad. Sci.. 56(3-4). 101-103.
  • Thorp, J. H., A. R. Black, K. H. Haag, and J. D. Wehr. 1994. "Zooplankton assemblages in the Ohio River: Seasonal, tributary, and navigation dam effects" Can. J. Fish. Aquat. Sci. 51. 1634-1643.
  • Alexander, J. E., J. H. Thorp, and R. D. Fell. 1994. "Turbidity and temperature effects on oxygen consumption in zebra mussels (Dreissena polymorpha)" 51(1). 179-184.
  • Thorp, J. H. and M. D. Delong. 1994. "The riverine productivity model: An heuristic view of carbon sources and organic processing in large river ecosystems" Oikos. 70(2). 305-308.
 
  • Delong, M. D., J. H. Thorp, and K. H. Haag. 1993. "New device for sampling macroinvertebrates from woody debris (snags) in nearshore areas of aquatic systems" Am. Midl. Nat.. 130(2). 413-417.
  • Kessler, R. K. and J. H. Thorp. 1993. "Microhabitat segregation of the threatened spotted darter (Etheostoma maculatum) and closely related orangefin darter (E. bellum)" Can. J. Fish. Aquat. Sci. 50(5). 1084-1091.
  • Delong, M. D., R. B. Summers, and J. H. Thorp. 1993. "Influence of food type on the growth of a riverine amphipod, Gammarus fasciatus" Can. J. Fish. Aquat. Sci. 50(9). 1891-1896.
  • Mellett, B. J., R. W. Bosserman, and J. H. Thorp. 1992. "Use of fractal dimension to analyze meandering patterns in the Redbird River of eastern Kentucky" Trans. Kentucky Acad. Sci. 53(1-2). 46-49.
  • Thorp, J. H.. 1992. "Linkage between islands and benthos in the Ohio River, with implications for riverine management" Can. J. Fish. Aquat. Sci. 49(9). 1873-1882.
  • Georgian, T. J. and J. H. Thorp. 1992. "Effects of microhabitat selection on feeding rates of net-spinning caddisfly larvae" Ecology. 73. 229-240.
  • Thorp, J. H. and A. P. Covich. 1991. "Introduction to freshwater invertebrates" Ecology and classification of North American freshwater invertebrates. edited by Thorp, J. H. and A. P. Covich. (1). 1-15.
  • Covich, A. P. and J. H. Thorp. 1991. "Crustacea: Introduction and Peracarida" Ecology and classification of North American freshwater invertebrates. edited by Thorp, J. H. and A. P. Covich. (1). 665-689.
  • Haag, K. H. and J. H. Thorp. 1991. "Cross-channel distribution patterns of invertebrate benthos in a regulated reach of the Tennessee River" Regulated Rivers: Research and Management. 6. 225-233.
  • Thorp, J. H. and A. P. Covich. 1991. "An overview of freshwater habitats" Ecology and classification of North American freshwater invertebrates. edited by Thorp, J. H. and A. P. Covich. (1). 17-36.
  • Thorp, J. H., L. D. Goldsmith, J. A. Polgreen, and L. M. Mayer. 1989. "Foraging patterns of nesting and non-nesting sunfish (Centrarchidae: Lepomis auritus and L. gibbosus)" Can. J. Fish. Aquat. Sci. 46. 1342-1346.
  • Mayack, D. T., J. H. Thorp, and M. L. Cothran. 1989. "Effects of burial and floodplain retention on stream processing of allochthonous litter" Oikos. 54. 378-388.
 
  • Thorp, J. H.. 1988. "Patches and the responses of lake benthos to sunfish nest-building" Oecologia. 76(2). 168-174.
  • Thorp, J. H., J. B. Wallace, and T. J. Georgian. 1986. "Untangling the web of caddisfly evolution and distribution" Oikos. 47(2). 253-256.
  • Thorp, J. H.. 1986. "Two distinct roles for predators in freshwater assemblages" Oikos. 47(1). 75-82.
  • Thorp, J. H. and S. P. Gloss. 1986. "Field and laboratory tests on acute toxicity of cadmium to freshwater crayfish" Bull. Environ. Contam. & Toxicol. 37. 355-361.
  • Diggins, M. R. and J. H. Thorp. 1985. "Winter-spring depth distribution of Chironomidae in a southeastern reservoir" Freshwat. Invertebr. Biol. 4(1). 8-21.
  • Cothran, M. L. and J. H. Thorp. 1985. "Tests of prey preference and switching behavior of the dragonfly Celithemis fasciata" Oikos. 44(2). 350-355.
  • Thorp, J. H., E. M. McEwan, M. F. Flynn, and F. R. Hauer. 1985. "Invertebrate colonization of submerged wood in a cypress-tupelo swamp and blackwater stream" Amer. Midl. Nat.. 113. 56-68.
  • Thorp, J. H.. 1984. "Theory and practice in crayfish communication studies" J. Chem. Ecol. 10(8). 1283-1288.
  • Thorp, J. H. and M. L. Cothran. 1984. "Regulation of freshwater community structure at multiple intensities of dragonfly predation" Ecology. 65(5). 1546-1555.
  • Thorp, J. H.. 1984. "Evolutionary differentiation of caddisfly catchnets: Perspectives on the roles of competition and predation" Oikos. 43. 121-125.
  • Thorp, J. H. and R. K. Chesser. 1983. "Seasonal responses of lentic midge assemblages to environmental gradients" Holarctic Ecology. 6(2). 123-132.
  • Thorp, J. H.. 1983. "An evaluation of hypotheses on the evolutionary differentiation of catchnets in net-spinning caddisflies (Trichoptera: Hydropsychidae)" Oikos. 40(2). 308-312.
  • Thorp, J. H. and H. Itagaki. 1982. "Verification versus falsification of existing theory: Analysis of possible chemical communication in crayfish" J. Chem. Ecol. 8(7). 1073-1077.
  • Gresens, S. E., M. L. Cothran, and J. H. Thorp. 1982. "The influence of temperature on the functional responses of the dragonfly Celithemis fasciata (Odonata: Libellulidae)" Oecologia. 53. 281-284.
  • Thorp, J. H. and M. L. Cothran. 1982. "Floating field microcosms for studying benthic communities" Freshwater Invertebrate Biology. 1(1). 44-49.
  • Thorp, J. H. and M. R. Diggins. 1982. "Factors affecting depth distribution of dragonflies and other benthic insects in a thermally destabilized reservoir" Hydrobiologia. 87. 33-44.
  • Cothran, M. L. and J. H. Thorp. 1982. "Emergence and size variation of Odonata in a thermal reservoir" Freshwat. Invertebr. Biol. 1(4). 30-39.
  • Thorp, J. H. and S. A. Winewriter. 1981. "Stress and growth response of juvenile crayfish to rhythmic and arrhythmic temperature fluctuations" Arch. Environ. Contam. & Toxicol. 10. 69-77.
  • Itagaki, H. and J. H. Thorp. 1981. "Laboratory experiments to determine if crayfish can communicate in a flow-through system" J. Chem. Ecol. 7(1). 115-126.
  • Thorp, J. H. and E. A. Bergey. 1981. "Field experiments on responses of a freshwater, benthic macroinvertebrate community to vertebrate predators" Ecology. 62(2). 365-375.
  • Thorp, J. H. and E. A. Bergey. 1981. "Field experiments on interactions between vertebrate predators and larval midges (Diptera: Chironomidae) in the littoral zone of a reservoir" Oecologia. 50. 285-290.
  • Caldwell, J. P., J. H. Thorp, and T. O. Jervey. 1980. "Predator-prey relationships among larval dragonflies, salamanders and frogs" Oecologia. 46(3). 258-289.
  • Thorp, J. H., J. P. Giesy, and S. A. Winewriter. 1979. "Effects of chronic cadmium exposure on crayfish survival, growth, and tolerance to elevated temperature" Arch. Environ. Contam. & Toxicol. 8. 449-456.
 
  • Thorp, J. H. and K. S. Ammerman. 1978. "Chemical communication and agonism in the crayfish Procambarus a. acutus" Amer. Midl. Nat.. 100(2). 471-474.
  • Thorp, J. H.. 1978. "Agonistic behavior in crayfish in relation to temperature and reproductive period" Oecologia. 36(3). 273-280.
 
  • Thorp, J. H.. 1976. "Interference competition as a mechanism of coexistence between two sympatric species of the grass shrimp Palaemonetes (Decapoda: Palaemonidae)" J. Exp. Mar. Biol & Ecol.. 25. 19-35.
  • Thorp, J. H. and D. E. Hoss. 1975. "Effects of salinity and cyclic temperature on survival of two sympatric species of grass shrimp (Palaemonetes) and their relationship to natural distributions" J. Exp. Mar. Biol & Ecol.. 18. 19-28.
  • Thorp, J. H. and G. T. Bathalmus. 1975. "Effects of crowding on growth rate and symbiosis in green hydra" Ecology. 56. 206-212.

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