Johnson, P. T. J., Preston*, D. L., Hoverman, J. T., and B. E. LaFonte (2013). Host and parasite diversity jointly regulate pathogen transmission in complex communities. PNAS 110: 16916-16921.

Altizer, S., Ostfeld, R. S., Harvell, C. D., Johnson, P. T. J., and S. Kutz (2013). Climate change and infectious diseases: from evidence to a predictive framework. Science 341: 514-519.

Preston*, D. L., Orlofske*, S. A. and P. T. J. Johnson. Complex life cycles, ontogenetic niche shifts and the role of parasites in a pond food web. Oecologia (accepted).

Reeves, M., Medley, K., Pinkney, A., Holyoak, M., Johnson, P. T. J. and M. Lannoo. Localized hotspots drive continental geography of abnormal amphibians. PLoS ONE (in press).

Rohr, J. R., Blaustein, A. R., Paull*, S. H., Johnson, P. T. J., Raffel, T., and S. Young* (2013). Using physiology to understand climate-driven changes in disease and their implications for conservation. Conservation Physiology 1: doi:10.1093/conphys/cot022.

LaFonte, B. E. and P. T. J. Johnson (2013). Experimental infection dynamics: using immunosuppression and in vivo parasite tracking to understand host resistance in an amphibian-trematode system. Journal of Experimental Biology 216: 3700-3708.

Lambden, J. and P. T. J. Johnson (2013). Quantifying the biomass of parasites to understand their role in aquatic communities. Ecology and Evolution 3: 2310-2321.

Hoverman, J. T., Hoye, B. and P. T. J. Johnson (2013). Does timing matter? Effects of timing and species composition on parasite infection success. Oecologia (accepted).

Pinto, H. A., Jadin, R. C., Orlofske, S. A., Johnson, P. T. J. and A. L. Melo (2013). Biomphalaria straminea (Mollusca: Planorbidae) as an intermediate host for Ribeiroia (Trematoda: Psilostomidae) in Brazil. Journal of Parasitology 99: 914-918.

Joseph, M. B., Mihaljevic, J. R., Arellano, A. L., Kueneman, J. G., Preston, D. L., Cross, P. C. and P. T. J. Johnson (2013). Taming wildlife disease: bridging the gap between science and management. Journal of Applied Ecology 50: 702-712.

Peterson, A. C., Richgels, K. L. D., Johnson, P. T. J., and V. J. McKenzie. Investigating the dispersal routes used by an invasive amphibian, Lithobates catesbeianus, in human-dominated landscapes. Biological Invasions 15: 2179-2191.

Richgels, K. L. D., Hoverman, J. T., and P. T. J. Johnson (2013). Evaluating community structure and the role of regional and local processes in larval trematode metacommunities of Helisoma trivolvis. Ecography 36: 854-863.

Thieltges, D. W., Amundsen, P. A., Hechinger, R. F., Johnson, P. T. J., Lafferty, K. D., Mouritsen, K. N., Preston*, D. L., Reise, K., Zander, C. D. and R. Poulin (2013). Parasites as prey in aquatic food webs: implications for predator infection and parasite transmission. Oikos 122: 1473-1482.

Johnson, P. T. J., Preston, D. L., Hoverman, J. T., and K. L. D. Richgels (2013). Biodiversity reduces disease through predictable changes in host community competence. Nature 494: 230-234.

Preston, D. L., Orlofske, S. A., Lambden, J. P. and P. T. J. Johnson (2013). Biomass and productivity of parasites in pond ecosystems. Journal of Animal Ecology (in press).

McMahon, T. A., Brannelly, L. A., Chatfield, M. W. H., Johnson, P. T. J., Joseph, M. B., McKenzie, V. J., Richards-Zawacki, C. L. and J. R. Rohr (2013). Chytrid fungus Batrachochytrium dendrobatidis has non-amphibian hosts and releases chemicals that cause pathology in the absence of infection. Proceedings of the National Academy of Sciences 110: 210-215.

Johnson, P. T. J., Hoverman, J. T., McKenzie, V. J., Blaustein, A. R. and K. L. D. Richgels (2013). Urbanization and wetland communities: applying metacommunity theory to understand local and landscape effects. Journal of Applied Ecology 50: 34-42.

Paull, S. H., LaFonte, B., and P. T. J. Johnson (2012). Temperature-driven shifts in a host-parasite interaction drive nonlinear changes in disease risk. Global Change Biology 18: 3558-3567.

Hoverman, J. T., Paull, S. H., and P. T. J. Johnson (2013). Does Climate Change Increase the Risk of Disease? Analyzing Published Literature to Detect Climate–Disease Interactions. In Pielke, R. Sr. (ed.), Climate Vulnerability: Understanding and Addressing Threats to Essential Resources, Vol. 4., Academic Press. DOI:

Johnson, P. T. J. and J. T. Hoverman (2012). Parasite diversity and coinfection determine pathogen infection success and host fitness. Proceedings of the National Academy of Sciences 109: 9006-9011.

Koprivnikar, J., Marcogliese, D. J., Rohr, J. R., Orlofske, S. A., Raffel, T. R. and P. T. J. Johnson (2012). Macroparasite infections of amphibians: what can they tell us? EcoHealth 9: 342-360.

Lunde, K. B., Resh, V. T, and P. T. J. Johnson (2012). Using a whole-ecosystem manipulation to understand host-parasite interactions and how they vary with study venue. Ecosphere 3: 84.

Hoverman, J. T., Mihaljevic, J. R., Richgels, K. L. D., Kerby, J. L. and P. T. J. Johnson (2012). Widespread co-occurrence of virulent pathogens within California amphibian communities. EcoHealth 9: 288-292.

Preston, D. L., Orlofske, S. A., McLaughlin, J. P. and P. T. J. Johnson (2012). Food web including infectious agents for a California freshwater pond. Ecology 93: 1760. (data paper; Ecological Archives E093-153-D1).

Paull, S. and P. T. J. Johnson (2012). Can we predict climate-driven changes to disease dynamics?  Applications for theory and management in the face of uncertainty. Wildlife Conservation in a Changing Climate (J. F. Brodie, E. Post and D. Doak, eds.). University of Chicago Press.

Lunde, K. B. and P. T. J. Johnson (2012). A practical guide for the study of amphibian malformations and their causes. Journal of Herpetology 46: 429-441.

Preston, D. L., Henderson, J. S. and P. T. J. Johnson (2012). Community ecology of invasions: direct and indirect effects of multiple invasive species on aquatic communities. Ecology 93: 1254-1261.

Orlofske, S. A., Jadin, R., Preston, D. L., and P. T. J. Johnson (2012). Parasite transmission in complex communities: predators and alternative hosts alter pathogenic infections in amphibians. Ecology 93: 1247-1260.

Preston, D. L. and P. T. J. Johnson (2012). Importance of native amphibians in the diet and distribution of the aquatic garter snake (Thamnophis atratus) in the San Francisco Bay Area of California. Journal of Herpetology 46: 221-227.

Blaustein, A. R., Gervasi, S. S., Johnson, P. T. J., Hoverman, J. T., Belden, L. K., Bradley, P. W. and G. Y. Xie (2012). Ecophysiology meets conservation: understanding the role of disease in amphibian population declines.  Philosophical Transactions of the Royal Society, Series B 367: 1688-1707.

Johnson, P. T. J., Rohr, J. R., Hoverman, J. T., Kellermanns, E., Bowerman, J. and K. B. Lunde (2012). Living fast and dying of infection: host life history drives interspecific variation in infection and disease risk. Ecology Letters 15: 235-242.

Paull, S. H., Song, S. J., McClure, K. M., Sackett, L. C., Kilpatrick, A. M. and P. T. J. Johnson (2012). From superspreaders to disease hotspots: linking transmission across hosts and space. Frontiers in Ecology and the Environment 10: 75-82.

Johnson, P. T. J., Preston, D. L., Hoverman, J. T., Henderson, J. S., Paull, S. H., and Redmond, M. D. (2012). Species diversity reduces parasite infection through cross-generational effects on host density. Ecology 93: 56-64.

Hartson, R. B., Orlofske, S. A., Keller, V., Dillon, Jr., R. T., and P. T. J. Johnson (2011). Land use and wetland spatial position jointly determine amphibian parasite communities. EcoHealth 8: 485-500.

Olden, J. D., Vander Zanden, M. J., and P. T. J. Johnson (2011). Assessing ecosystem vulnerability to invasive rusty crayfish (Orconectes rusticus) in freshwater environments. Ecological Applications 21: 2587-2599.

Redmond, M. D., Hartson, R. B., Hoverman, J. T., de Jesus-Villaneueva, C. N. and P. T. J. Johnson (2011). Experimental exposure of Helisoma trivolvis and Biomphalaria glabrata (Gastropoda) to Ribeiroia ondatrae (Trematoda). Journal of Parasitology 97: 1055-1061.

Goodman, B. A. and P. T. J. Johnson (2011). Disease and the extended phenotype: parasites control host performance and survival through induced changes in body plan. PLoS ONE 6: e20193.

Locke, S. A., McLaughlin, J. D., Lapierre, A. R., Johnson, P. T. J. and D. J. Marcogliese (2011). Linking larvae and adults of Apharyngostrigea cornu, Hysteromorpha triloba and Alaria mustelae (Diplostomoidea, Digenea) using molecular data. Journal of Parasitology 97: 846-851.

Rohr, J. R., Johnson, P. T. J., Paull, S. H., Raffel, T. R., Dobson, A. P., Kilpatrick, A. M., Ruiz-Moreno, D., Pascual, M. and M. B. Thomas (2011). Frontiers in climate change-disease research. Trends in Ecology and Evolution 26: 270-277.

Johnson, P. T. J., Kellermanns, E., and J. Bowerman (2011). Critical windows of disease risk: amphibian pathology driven by developmental changes in host resistance and tolerance. Functional Ecology 25: 726-734.

Romansic, J. M., Johnson, P. T. J., Searle, C. L., Johnson, J. E., Tunstall, T., Han, B. A., Rohr, J. R. and A. R. Blaustein (2011). Individual and combined effects of multiple pathogens on Pacific treefrogs.  Oecologia 166: 1029-1041.

Peñalva-Arana, D. C., Forshay, K. J., Johnson, P. T. J., Strickler, J. R. and S. I. Dodson (2011). Chytrid infection reduces thoracic beat and heart rate of Daphnia pulicaria. Hydrobiologia 668: 147-154.

Blaustein, A. R., Han, B. A., Relyea, R. A., Johnson, P. T. J., Buck, J. C., Gervasi, S. S. and L. B. Kats (2011). The complexity of amphibian declines: understanding the role of cofactors in driving amphibian losses. Annals of the New York Academy of Sciences 1223: 108-119.

Johnson, P. T. J. and S. Paull (2011). The ecology and emergence of disease in fresh waters.  Freshwater Biology 56: 638-657.

Paull, S. and P. T. J. Johnson (2011). How will climate change affect host-parasite interactions?  Understanding differential responses of hosts and parasites. Freshwater Biology 56: 767-778.      

Johnson, P. T. J., McKenzie, V. J., Peterson, A. C., Kerby, J. L., Brown, J., Blaustein, A. R. and T. Jackson (2011). Regional decline of an iconic amphibian associated with elevation, land-use change, and invasive species. Conservation Biology 25: 556-566.

Goodman, B. A. and P. T. J. Johnson (2011). Ecomorphology and disease: understanding the cryptic effects of parasitism on host habitat use, thermoregulation, and predator avoidance. Ecology 92: 542-548.

Johnson, P. T. J. and I. D. Buller  (2011). Parasite competition hidden by correlation coinfections: using field studies and experiments to understand parasite interactions.  Ecology 92: 535-541.

Daly , E. W. and P. T. J. Johnson (2011). Beyond immunity: quantifying the effects of host anti-parasite behavior on parasite transmission. Oecologia 165: 1043-1050.

Preston, D. L. and P. T. J. Johnson (2010). Ecological consequences of parasitism.  Nature Knowledge 1: 39.

Johnson, P. T. J. and J. Bowerman (2010). Do predators cause frog deformities? The need for an eco-epidemiological approach.  Journal of Experimental Zoology 314B: 515-518.

Krugner-Higby, L., Haak, D., Johnson, P. T. J., Shields, J. D., Jones, W. M., Reece, K. S., Meinke, T., Gendron, A. and J. A. Rusak (2010). Spatial and temporal patterns of an epizootic of ulcerative disease in crayfish (Orconectes propinquus) linked to Saprolegnia australis in Big Muskellunge Lake, Wisconsin.  Diseases of Aquatic Organisms 91: 57-66.

Johnson, P. T. J., Dobson, A., Lafferty, K. D., Marcogliese, D., Memmott, J., Orlofske, S., Poulin, R., and D. W. Thieltges (2010). When parasites become prey: ecological and epidemiological significance.  Trends in Ecology & Evolution 25: 362-371. 

Johnson, P. T. J., and D. W. Thieltges (2010). Diversity, decoys and the dilution effect: how ecological communities affect disease risk.  Journal of Experimental Biology 213: 961-970.

Johnson, P. T. J., Townsend, A. R., McKenzie, V. J., Howarth, R., Rejmankova, E. and P. Glibert (2010). Linking environmental nutrient enrichment and disease emergence in humans and wildlife. Ecological Applications 20:16-29.

Johnson, P. T. J., Reeves, M. K., Krest, S. K. and A. E. Pinkney (2010). A decade of deformities: advances in our understanding of amphibian malformations and their implications.  In Sparling, Linder, Bishop, Krest (eds), Ecotoxicology of Amphibians and Reptiles, 2nd edtion.  SETAC Press, Pensacola FL.

Blaustein, A. R. and P. T. J. Johnson (2010). When an infection turns lethal. Nature 465: 881-882.

Paull, S. H. and P. T. J. Johnson. Predicting the synergies between climate change and infectious disease. Conserving Wildlife Populations in a Changing Climate (J. Brodie, E. Post and D. Doak, eds.). University of Chicago Press (in press).

Solomon, C. T., Olden, J. D., Johnson, P. T. J., Dillon, R. T. Jr. and M. J. Vander Zanden (2010).  Distribution and community-level effects of the Chinese mystery snail (Bellamya chinensis) in northern Wisconsin lakes. Biological Invasions 12: 1591-1605.

Bowerman, J., Johnson, P. T. J., and T. Bowerman (2010). Sublethal predators and their injured prey: linking aquatic predators and severe limb abnormalities in amphibians Ecology 91: 242-251.

Gleason, F. H., Marano, A. V., Johnson, P. T. J., and W. W. Martin (2010). Blastocladian parasites of invertebrates.  Fungal Biology Reviews 24: 56-67.

Gross, J. A., Johnson, P. T. J., Prahl, L. K. and W. H. Karasov (2009).  Critical period of sensitivity for effects of cadmium on frog growth and development.  Environmental Toxicology and Chemistry 28: 1227-1232.

Johnson, P. T. J. (2009). The meaning behind malformed frogs. Conservation Biology 23: 508-511.

Johnson, P. T. J., Ives, A. R., Lathrop, R. C. and S. R. Carpenter (2009).  Long-term disease dynamics in lakes: causes and consequences of chytrid infections in Daphnia populations.  Ecology 90: 132-144.

Johnson, P. T. J., Lund, P. J., Hartson, R. B., and T. P. Yoshino (2009). Community diversity reduces Schistosoma mansoni transmission and human infection risk.  Proceedings of the Royal Society of London, Series B 276: 1657-1663.

Johnson, P. T. J., Olden, J. D., Solomon, C. T. and M. J. Vander Zanden (2009). Community and ecosystem effects of invasive predators and herbivores in an experimental aquatic system. Oecologia 159: 161-170.

Johnson, P. T. J. and R. B. Hartson (2009). All hosts are not equal: explaining differential patterns of malformations in an amphibian community. Journal of Animal Ecology 78: 191-201.

Johnson, P. T. J. and V. J. McKenzie (2008).Effects of environmental change on helminth infections in amphibians: exploring the emergence of Ribeiroia and Echinostoma infections in North America. Chapter 11 in Fried, B. and R. Toledo, The Biology of Echinostomes, Springer. 

Johnson, P. T. J., Hartson, R. B., Larson, D. J. and D. R. Sutherland (2008). Linking biodiversity loss and disease emergence: amphibian community structure determines parasite transmission and pathology. Ecology Letters 11: 1017-1026.

Forshay, K. J., Johnson, P. T. J., Stock, M., Penalva, C. and S. I. Dodson (2008). Festering food: parasitic chytridiomycete pathogen reduces quality of Daphnia hosts as a food resource. Ecology 89: 2692-2699. 

Refardt, D., Decaestecker, E., Johnson, P. T. J., and J. Vavra (2008). Morphology, ecology and molecular phylogeny of Binucleata daphnia n. g., n. sp. (Fungi: Microsporidia), a parasite of Daphnia magna Straus 1820 (Crustacea: Branchiopoda). Journal of Eukaryotic Microbiology 55: 393-408.

Lafferty, K. D., Allesina, S., Arin, M., Briggs, C. J., DeLeo, G., Dobson, A. P., Dunne, J. A., Johnson, P. T. J. and 10 additional authors (2008). Parasites in food webs: the ultimate missing links. Ecology Letters 11: 533-546. 

Johnson, P. T. J., Olden, J. D. and M. J. Vander Zanden (2008). Dam invaders: hydrologic impoundments enhance ecosystem invasibility. Frontiers in Ecology and the Environment 6: 357-363.

Perkins, S., Altizer, S., Bjornstad, O., Burdon, J., Clay, K., Gomez-Aparicio, L., Jeschke, J., Johnson, P. T. J., Lafferty, K., Malstrom, C., Martin, P., Power, A., Thrall, P., Strayer, D. and M. Uriarte. Infectious disease in invasion biology (2008).  Chapter 8 in Ostfeld, R. S., F. Keesing, and V. T. Eviner, Infectious disease ecology: effects of ecosystems on disease and of disease on ecosystems. Princeton University Press, Princeton, NJ.

Johnson, P. T. J. and S. R. Carpenter (2008). Influence of eutrophication on disease in aquatic ecosystems: patterns, processes, and predictions. Chapter 4 (pp. 71-99) in R. Ostfeld, F. Keesing and V. Eviner (eds.), Infectious disease ecology: effects of ecosystems on disease and of disease on ecosystems. Princeton University Press.

Johnson, P. T. J., Chase, J. M., Dosch, K. L., Gross, J., Hartson, R. B., Larson, D., Sutherland, D. R. and S. R. Carpenter (2007).  Aquatic eutrophication promotes pathogenic infection in amphibians. Proceedings of the National Academy of Sciences 104: 15781-15786.

Roth, B. M., Kaplan, I. C., Sass, G. G., Johnson, P. T. J., Marburg, A. E., Yannarell, A. C., Havlicek, T. D., Willis, T. V., Turner, M. G. and S. R. Carpenter. (2007). Linking terrestrial and aquatic ecosystems: the role of woody habitat in lake food webs. Ecological Modelling 203: 439-452.

Carpenter, S. R. B. J. Benson, R. Biggs, J. W. Chipman, J. A. Foley, S. A. Golding, R. B. Hammer, P. C. Hanson, P. T. J. Johnson, A. M. Kamarainen, T. K. Kratz, R. C. Lathrop, K. D. McMahon, B. Provencher, J. A. Rusak, C. T. Solomon, E. H. Stanley, M. G. Turner, M. J. Vander Zanden, C. H. Wu and H. Yuan.  (2007). Understanding regional change:  Comparison of two lake districts. BioScience  57: 323-335 .

Johnson, P. T. J. Amphibian diversity: decimation by disease. (2006). Proceedings of the National Academy of Sciences , USA 103: 3011-3012.

Johnson, P. T. J., Stanton, D. E., Preu, E. R., Forshay, K. J. and S. R. Carpenter. (2006). Dining on disease: how interactions between infection and environment affect predation risk. Ecology 87: 1973-1980.

Johnson, P. T. J., Preu, E. R., Sutherland, D. R., Romansic, J., Han, B. and A. R. Blaustein. (2006). Adding infection to injury: Synergistic effects of predation and parasitism on salamander limb malformations. Ecology 87: 2227-2235.

Johnson, P. T. J., Longcore, J. E., Stanton, D. E., Carnegie, R. B., Shields, J. D. and E. R. Preu. (2006). Chytrid fungal infections of Daphnia pulicaria : development, ecology, pathology and phylogeny of Polycaryum laeve . Freshwater Biology 51: 634-648.

Wilson, W. D., Johnson, P. T. J., Sutherland, D. R., Moné, H. and E. S. Loker. (2005). A molecular phylogenetic study of the genus Ribeiroia (Digenea): trematodes known to cause limb malformations in amphibians. Journal of Parasitology 91: 1040-1045.

Fried, B. and P. T. J. Johnson (2005). In vitro excystment of the metacercariae of Ribeiroia ondatrae. Parasitology Research 95: 293-294.

Johnson, P. T. J. and K. B. Lunde (2005). Parasite infection and limb malformations: A growing problem in amphibian conservation. Pp. 124-138 in Amphibian Declines: the Conservation Status of United States Species , M. J. Lannoo (ed). University of California Press.

Johnson, P. T. J. and J. M. Chase (2004). Parasites in the food web: linking amphibian malformations and aquatic eutrophication. Ecology Letters 7: 521-526.

Johnson, P. T. J., D. R. Sutherland, J. M. Kinsella and K. B. Lunde (2004). Review of the trematode genus Ribeiroia (Psilostomidae): Ecology, life history and pathogenesis with special emphasis on the amphibian malformation problem. Advances in Parasitology 57: 191-253.

Blaustein, A. R. and P. T. J. Johnson (2003). Explaining frog deformities. Scientific American 288: 60-65.

Blaustein, A. R. and P. T. J. Johnson (2003). The complexity of deformed amphibians. Frontiers in Ecology and the Environment 1: 87-94.

Johnson, P. T. J., Lunde, K. B., Zelmer, D. A. and J. K. Werner (2003). Limb deformities as an emerging parasitic disease in amphibians: Evidence from museum specimens and resurvey data. Conservation Biology 17: 1724-1737.

Johnson, P. T. J. (2003). Biased sex ratios in fiddler crabs (Brachyura, Ocypodidae): A review and evaluation of the influence of sampling method, size class, and sex-specific mortality. Crustaceana 76: 559-580.

Johnson, P. T. J. and D. R. Sutherland (2003). Amphibian deformities and Ribeiroia infection: An emerging helminthiasis. Trends in Parasitology 19: 332-335.

Johnson, P. T. J. and E. G. Ritchie (2003). Macroinvertebrate fauna of an iron-rich stream in the Wet Tropics of Australia: a comparative assessment of communities using a Rapid Bioassessment Protocol. Memoirs of the Queensland Museum 49: 331-338.

Bowerman, J. and P. T. J. Johnson (2003). Timing of trematodes-related malformations in Oregon spotted frogs and Pacific treefrogs. Northwestern Naturalist 84: 142-145.

Lannoo M. J., Sutherland, D. R., Jones, P., Rosenberry, D., Klaver, R. W., Hoppe, D. M., Johnson, P. T. J., Lunde, K. B., Facemire, C., Kapfer, J. M. (2003). Multiple causes for the malformed frog phenomenon. In: ATSM STP 1443: G. Linder, Little, E., Krest, S. and D. Sparling (Eds). Multiple stressor effects in relation to declining amphibian populations. ASTM International, West Conshoshocken, PA.

Johnson, P. T. J., Lunde, K. B., Thurman, E. M., Ritchie, E. G., Wray, S. W., Sutherland, D. R., Kapfer, J. M., Frest, T. J., Bowerman, J. and A. R. Blaustein (2002). Parasite (Ribeiroia ondatrae) infection linked to amphibian malformations in the western United States. Ecological Monographs 72: 151-168.

Johnson, P. T. J., Lunde, K. B., Haight, R. W., J. Bowerman, and A. R. Blaustein (2001). Ribeiroia ondatrae (Trematoda: Digenea) infection induces severe limb malformations in western toads (Bufo boreas). Canadian Journal of Zoology 79: 370-379.

Johnson, P. T. J., Lunde, K. B., Ritchie, E. G., Reaser, J. K., and A. E. Launer (2001). Morphological abnormality patterns in a California amphibian community. Herpetologica 57: 336-352.

Johnson, P. T. J., Lunde, K. B., Ritchie, E. G. and A. E. Launer (1999). The effect of trematode infection on amphibian limb development and survivorship. Science 284: 802-804.


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