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Aquatic eutrophication promotes pathogenic infection in amphibians
- Pieter T. J. Johnson, Jonathan M Chase, S. Carpenter
- Biology, Environmental ScienceProceedings of the National Academy of Sciences
- 2 October 2007
It is shown that the effects of eutrophication cascade through the parasite life cycle to promote algal production, the density of snail hosts, and, ultimately, the intensity of infection in amphibians, promoting amphibian disease through two distinctive pathways.
Parasites in food webs: the ultimate missing links
Parasitism is the most common consumer strategy among organisms, yet only recently has there been a call for the inclusion of infectious disease agents in food webs. The value of this effort hinges…
Dam invaders: impoundments facilitate biological invasions into freshwaters
Freshwater ecosystems are at the forefront of the global biodiversity crisis, with more declining and extinct species than in terrestrial or marine environments. Hydrologic alterations and biological…
Climate Change and Infectious Diseases: From Evidence to a Predictive Framework
- S. Altizer, R. Ostfeld, Pieter T. J. Johnson, S. Kutz, C. D. Harvell
- Environmental ScienceScience
- 2 August 2013
This review highlights research progress and gaps that have emerged during the past decade and develops a predictive framework that integrates knowledge from ecophysiology and community ecology with modeling approaches to mitigate the impacts of climate-driven disease emergence.
Biodiversity decreases disease through predictable changes in host community competence
- Pieter T. J. Johnson, D. L. Preston, J. Hoverman, K. Richgels
- Environmental ScienceNature
- 14 February 2013
It is shown that host diversity inhibits transmission of the virulent pathogen Ribeiroia ondatrae and reduces amphibian disease as a result of consistent linkages among species richness, host composition and community competence.
Linking environmental nutrient enrichment and disease emergence in humans and wildlife.
- Pieter T. J. Johnson, A. Townsend, M. Ward
- Environmental ScienceEcological applications : a publication of the…
Examination of the consequences of nutrient pollution on directly transmitted, vector-borne, complex life cycle, and noninfectious pathogens, including West Nile virus, malaria, harmful algal blooms, coral reef diseases, and amphibian malformations, suggests the importance of careful disease management in conjunction with continued intensification of global nutrient cycles.
When parasites become prey: ecological and epidemiological significance of eating parasites.
Parasite (Ribeiroia ondatrae) infection linked to amphibian malformations in the western United States
It is demonstrated that Ribeiroia infection is an important and widespread cause of amphibian limb malformations in the western United States and the relevance of trematode infection to declines of amphibians populations and the influence of habitat modification on the pathology and life cycle of Ribeira are emphasized as areas requiring further research.
Why infectious disease research needs community ecology
This work describes how analytical and conceptual approaches from this discipline can be used to address fundamental challenges in disease research, and shows how a community ecology framework can help to determine whether infection is best controlled through ‘defensive’ approaches that reduce host suitability or through “offensive” approaches that dampen parasite spread.