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Agrochemicals increase trematode infections in a declining amphibian species
It is shown that the widely used herbicide, atrazine, was the best predictor of the abundance of larval trematodes in the declining northern leopard frog Rana pipiens, and analysis of field data supported a causal mechanism whereby both agrochemicals increase exposure and susceptibility to larval Trematodes by augmenting snail intermediate hosts and suppressing amphibian immunity.
Role of niche restrictions and dispersal in the composition of arbuscular mycorrhizal fungal communities
It is suggested that AM fungal distributions are the product of environment, interspecific competition and regional spatial dynamics, emphasizing the importance of using a metacommunity perspective in community ecology.
Understanding the net effects of pesticides on amphibian trematode infections.
The reduction in exposure to trematodes due to pesticides-induced cercarial mortality was smaller than the pesticide-induced increase in amphibian susceptibility (a trait-mediated effect), suggesting that the net effect of exposure to environmentally realistic levels of pesticides will be to elevate amphibian trematode infections.
A Qualitative Meta-Analysis Reveals Consistent Effects of Atrazine on Freshwater Fish and Amphibians
  • J. Rohr, K. McCoy
  • Environmental Science, Biology
    Environmental health perspectives
  • 23 September 2009
A qualitative meta-analysis on the effects of ecologically relevant atrazine concentrations on amphibian and fish survival, behavior, metamorphic traits, infections, and immune, endocrine, and reproductive systems identified several consistent effects that must be weighed against any of its benefits and the costs and benefits of alternatives toAtrazine use.
Community responses to contaminants: Using basic ecological principles to predict ecotoxicological effects
  • W. Clements, J. Rohr
  • Environmental Science
    Environmental toxicology and chemistry
  • 1 September 2009
In addition to providing a framework for predicting contaminant fate and effects, food-web ecology can help to identify communities that are sensitive to contaminants, contaminants that are particularly insidious to communities, and species that are crucial for transmitting adverse effects across trophic levels.
Community ecology as a framework for predicting contaminant effects.
Biodiversity inhibits parasites: Broad evidence for the dilution effect
Broad evidence is provided that host diversity inhibits parasite abundance using a meta-analysis of 202 effect sizes on 61 parasite species, indicating that dilution was robust across all ecological contexts examined and generally decreases parasitism and herbivory.
Detecting the impact of temperature on transmission of Zika, dengue, and chikungunya using mechanistic models
Temperature-dependent transmission based on a mechanistic model is an important predictor of human transmission occurrence and incidence in tropical and subtropical regions and in temperate areas even if vectors are present.
A global synthesis of animal phenological responses to climate change
It is shown that temperature primarily drives phenological responses at mid-latitudes, with precipitation becoming important at lower latitudes, probably reflecting factors that drive seasonality in each region.
Negative effects of changing temperature on amphibian immunity under field conditions
It is suggested that temperature variability causes increased susceptibility of amphibians to infection, and they have implications for the emergence of disease and the potential for climate change to exacerbate amphibian decline.