Publications

2016


Stephens, P. E., Altizer, S., Smith, K. F., Aguirre, A. A., Brown, J. H., Budischak, S., Byers, J. E., Dallas, T., Davies, J. T., Drake, J. M., Ezenwa, V., Farrel, M., Gittleman, J. L., Han, B., Huang, S., Hutchinson, R. A., Johnson, P. T. J., Nunn, C. L., Onstad, D., Park, A., Vazquez-Prokopec, G. M., Schmidt, J. P. and R. Poulin (2016). The macroecology of infectious diseases: a new perspective on global-scale drivers of pathogen distributions and impacts. Ecology Letters 19: 1159-1171. pdf_icon small.gif

Wood, C. L. and P. T. J. Johnson (2016). How does space influence the relationship between host and parasite diversity? Journal of Parasitology (in press). pdf_icon small.gif

Preston, D. L., Caine, N., McKnight, D. M., Williams, M. W., Hell, K., Miller, M. P., Hart, S. J. and P. T. J. Johnson (2016). Climate regulates alpine lake ice cover phenology and aquatic ecosystem structure. Geophysical Research Letters 43: 5353-5360. pdf_icon small.gif

Grant, E. H. C., Willer, D. A. W., Schmidt, B. R., Adams, M. J., Amburgey, S. M., Chambert, T., Cruickshank, S. S., Fisher, R. N., Green, D. M., Hossack, B. R., Johnson, P. T. J., Joseph, M. B., Rittenhouse, T., Ryan, M., Waddle, J. H., Walls, S. C., Bailey, L. L., Fellers, G. M., Gorman, T. A., Ray, A. M., Pilliod, D. S., Prices, S. J., Saenz, D., Sadinski, W. and E. Muths (2016). Quantitative evidence for the effects of multiple drivers on continental-scale amphibian declines. Scientific Reports 6: 25625. pdf_icon small.gif

Altman, K. A., Paull, S. H., Johnson, P. T. J., Golembieski, M. N., Stephens, J. P., LaFonte, B. E., and T. R. Raffel (2016). Host and parasites thermal acclimation responses depend on the stage of infection. Journal of Animal Ecology 85: 1014-2014. pdf_icon small.gif

Koprivnikar, J. and P. T. J. Johnson (2016). The rise of disease ecology and its implications for parasitology -- a review. Journal of Parasitology 102: 397-409. pdf_icon small.gif

Johnson P. T. J., Wood, C. L., Joseph, M. B., Preston, D. L., Haas, S. E., and Y. P. Springer (2016). Habitat heterogeneity drives the host diversity-begets-parasite diversity relationship: evidence from experimental and field studies. Ecology Letters 19: 752-761. pdf_icon small.gif

Mischler, J. A., Johnson, P. T. J., McKenzie, V. J., and A. R. Townsend (2016). Parasite infection alters nitrogen cycling at the ecosystem scale. Journal of Animal Ecology 85: 817-828. pdf_icon small.gif

Calhoun, D. M., Woodhams, D., Howard, C., LaFonte, B. E., Gregory, J. R., and P. T. J. Johnson (2016). Role of antimicrobial peptides in amphibian defense against trematode infection. EcoHealth 13: 383-391. pdf_icon small.gif

Preston, D. L., Mischler, J., Townsend, A. and P. T. J. Johnson (2016). Disease ecology meets ecosystem science. Ecosystems 19: 737-748. pdf_icon small.gif

Hannon, E. R., Kinsella, J. M., Calhoun, D. M., Joseph, M. B. and P. T. J. Johnson (2016). Endohelminths in bird hosts from northern California and an analysis of the role of life history traits on parasite richness. Journal of Parasitology 102: 199-207. pdf_icon small.gif

Joseph, M. B., Preston, D. L. and P. T. J. Johnson (2016). Integrating occupancy models and structural equation models to understand species occurrence. Ecology 97: 765-775. pdf_icon small.gif

Springer Y. P., D. Hoekman, P. T. J. Johnson, P. A. Duffy, R. A. Hufft, D. T. Barnett, B. F. Allan, B. R. Amman, C. M. Barker, R. Barrera, C. B. Beard, L. Beati, M. Begon, M. S. Blackmore, W. E. Bradshaw, D. Brisson, C. H. Calisher, J. E. Childs, M. A. Diuk-Wasser, R. J. Douglass, R. J. Eisen, D. H. Foley, J. E. Foley, H. D. Gaff, S. L. Gardner, H. S. Ginsberg, G. E. Glass, S. A. Hamer, M. H. Hayden, B. Hjelle, C. M. Holzapfel, S. A. Juliano, L. D. Kramer, A. J. Kuenzi, S. L. LaDeau, T. P. Livdahl, J. N. Mills, C. G. Moore, S. Morand, R. S. Nasci, N. H. Ogden, R. S. Ostfeld, R. R. Parmenter, J. Piesman, W. K. Reisen, H. M. Savage, D. E. Sonenshine, A. Swei and M. J. Yabsley (2016). Tick-, mosquito-, and rodent-borne parasite sampling designs for the National Ecological Observatory Network. Ecosphere 7:e01271. 10.1002/ecs2.1271 pdf_icon small.gif

2015


ELcover2015.jpgJohnson, P. T. J., Ostfeld, R. S. and F. Keesing (2015). Frontiers in research on biodiversity and disease. Ecology Letters 18: 1119-1133. pdf_icon small.gif

Johnson, P. T. J., De Roode, J. C. and A. Fenton (2015). Why infectious disease biology needs community ecology. Science 349: 1259504. pdf_icon small.gif

LaFonte, B. E., Raffel, T. R., Monk, I. N. and P. T. J. Johnson (2015). Quantifying larval trematode infections in hosts: a comparison of method validity and evaluation of their implications for infection success. Experimental Parasitology 154: 155-162. pdf_icon small.gif

Calhoun, D. M., Schaffer, P. A., Gregory, J. R., Hardy, K. M., and P. T. J. Johnson (2015). Experimental exposure of bluegill to Ribeiroia ondatrae: histopathology and hematological responses. Journal of Aquatic Animal Health 27: 185-191. pdf_icon small.gif

fwb_coverA.jpgOrlofske, S. A., Jadin, R. C. and P. T. J. Johnson (2015). It's a predator-eat-parasite world: how characteristics of predator, parasite and environment affect consumption. Oecologia 178: 537-547. pdf_icon small.gif

Huver, J. R., Koprivnikar, J., Johnson, P. T. J. and S. Whyard (2015). Development and application of an eDNA method to detect and quantify a pathogenic parasite in aquatic ecosystems. Ecological Applications 25: 991–1002. pdf_icon small.gif

Mihaljevic, J. R., Joseph, M. B., and P. T. J. Johnson (2015). Using multi-species occupancy models to improve the characterization and understanding of metacommunity structure. Ecology 96: 1783-1792. pdf_icon small.gif

FREEcover2016_0.jpgStewart-Koster, B., Olden, J. D., and P. T. J. Johnson (2015). Integrating landscape connectivity and invasion vulnerability to guide offensive and defensive invasive species management. Journal of Applied Ecology 52: 366-378. pdf_icon small.gif

Wood, C. L. and P. T. J. Johnson (2015). A world without parasites: Exploring the hidden ecology of infection. Frontiers in Ecology and the Environment 13: 425–434. pdf_icon small.gif

Paull, S. H., Raffel, T. R., LaFonte, B. E. and P. T. J. Johnson (2015). How temperature shifts affect parasite production: Testing the roles of thermal stress and acclimation. Functional Ecology 29: 941–950. pdf_icon small.gif

2014


Preston, D. L., Boland, C., Hoverman, J. T. and P. T. J. Johnson (2014). Natural enemy ecology: comparing the effects of predation risk, infection risk and disease on host behavior. Functional Ecology 28: 1472-1481. 

Johnson, P. T. J. and J. T. Hoverman (2014). Heterogeneous hosts: how variation in host size, behaviour, and immunity affect parasite aggregation.Journal of Animal Ecology 83: 1103-1112. 

Koprivnikar, J., Paull, S. H. and P. T. J. Johnson (2014). Combined influence of hydroperiod and parasitism on larval amphibian development.Freshwater Science 33: 941-949. 

Orlofske, S. A., Jadin, R. C., Hoverman, J. T. and P. T. J. Johnson (2014). Predation and disease: understanding the effects of predators at multiple trophic levels on pathogen transmission. Freshwater Biology 59: 1064-1075. 

Johnson, P. T. J., Koprivnikar, J., Orlofske, S. A., Melbourne, B. A. and B. E. LaFonte (2014). Making the right choice: testing the drivers of asymmetric infections within hosts and their consequences for pathology. Oikos 123:875-885.

Paull, S. H. and P. T. J. Johnson (2014). Experimental warming drives a seasonal shift in the timing of host-parasite dynamics with consequences for disease risk. Ecology Letters 17: 445-453.

Preston, D. L., Orlofske*, S. A. and P. T. J. Johnson (2014). Complex life cycles, ontogenetic niche shifts and the role of parasites in a pond food web. Oecologia 174: 953-965. 

2013


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. Proceedings of the National Academy of Sciences 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.

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? How priority effects influence the outcome of parasite interactions within hosts. Oecologia 173: 1471-1480. 

Reeves, M., Medley, K., Pinkney, A., Holyoak, M., Johnson, P. T. J. and M. Lannoo (2013). Localized hotspots drive continental geography of abnormal amphibians. PLoS ONE 8: e77467. 

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 (2013). 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 trivolvisEcography 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 82: 509-517.

Paull, S. and P.T.J. Johnson (2013). 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. pdf_icon small.gif 

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. 

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: http://dx.doi.org/10.1016/B978-0-12-384703-4.00406-8.

2012


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. 

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).

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.

2011


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 pulicariaHydrobiologia 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. Oecologia165: 1043-1050. 

2010


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). Ulcerative disease outbreak 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. 

2009


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. pdf_icon small.gif

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). Interactions amoung invaders: community and ecosystem effects of multiple invasive species 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.

2008


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

Johnson, P. T. J., Hartson, R. B., Larson, D. J. and D. R. Sutherland (2008). Diversity and disease: community structure drives parasites transmission nad host fitness. Ecology Letters 11: 1017-1026.

Forshay, K. J., Johnson, P. T. J., Stock, M., Penalva, C. and S. I. Dodson (2008). Festering food: 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, molecular phylogeny, and ecology 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. 

2007


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: A comparison of two lake districts. BioScience  57: 323-335 .

2006


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 infections of Daphnia pulicaria : development, ecology, pathology and phylogeny of Polycaryum laeve .Freshwater Biology 51: 634-648.

 

2005


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. 

2004


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. pdf_icon small.gif

2003


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. pdf_icon small.gif

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. 

2002


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 Monographs72: 151-168. 

2001


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. 

1999


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.