caa a22 4500 445378360 CHVBK 20180317143010.0 cr unu---uuuuu 170323e20111201xx s 000 0 eng 10.1007/s10393-011-0715-9 doi (NATIONALLICENCE)springer-10.1007/s10393-011-0715-9 Land Use and Wetland Spatial Position Jointly Determine Amphibian Parasite Communities [Elektronische Daten] [Richard Hartson, Sarah Orlofske, Vanessa Melin, Robert Dillon Jr., Pieter Johnson] Land use change is one of the most commonly cited contributing factors to infectious disease emergence, yet the mechanisms responsible for such changes and the spatial scales at which they operate are rarely identified. The distributions of parasites with complex life cycles depend on interactions between multiple host species, suggesting the net effects of land use on infection patterns may be difficult to predict a priori. Here, we used an information-theoretic approach to evaluate the importance of land use and spatial scale (local, watershed, and regional) in determining the presence and abundance of multi-host trematodes of amphibians. Among 40 wetlands and 160 hosts sampled, trematode abundance, species richness, and the presence and abundance of pathogenic species were strongly influenced by variables at the watershed and regional scales. Based on model averaging results, overall parasite richness and abundance were higher in forested wetlands than in agricultural areas; however, this pattern was influenced by a wetland's proximity to the Mississippi Flyway at the regional scale. These patterns likely reflect the activity of trematode definitive hosts, such as mammals and especially birds, such that infections decreased with increasing distance from the Mississippi River. Interestingly, despite lower mean infections, agricultural wetlands had higher variances and maximum infections. At the wetland scale, phosphorus concentrations and the abundances of intermediate hosts, such as snails and larval amphibians, positively affected parasite distributions. Taken together, these results contribute to our understanding of how altered landscapes affect parasite communities and inform further research on the environmental drivers of amphibian parasite infections. International Association for Ecology and Health, 2011 spatial epidemiology nationallicence ribeiroia nationallicence echinostoma nationallicence amphibian decline nationallicence conservation nationallicence land use change nationallicence Hartson Richard Department of Water Resources, University of Idaho, 83843, Moscow, ID, USA aut Orlofske Sarah Ecology and Evolutionary Biology, University of Colorado, 80309, Boulder, CO, USA aut Melin Vanessa Department of Biology, University of Wisconsin, 54601, La Crosse, WI, USA aut Dillon Jr. Robert Department of Biology, College of Charleston, 29424, Charleston, SC, USA aut Johnson Pieter Ecology and Evolutionary Biology, University of Colorado, 80309, Boulder, CO, USA aut EcoHealth Springer-Verlag 8/4(2011-12-01), 485-500 1612-9202 8:4<485 2011 8 10393 https://doi.org/10.1007/s10393-011-0715-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10393-011-0715-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Hartson Richard Department of Water Resources, University of Idaho, 83843, Moscow, ID, USA aut NATIONALLICENCE 700 1- Orlofske Sarah Ecology and Evolutionary Biology, University of Colorado, 80309, Boulder, CO, USA aut NATIONALLICENCE 700 1- Melin Vanessa Department of Biology, University of Wisconsin, 54601, La Crosse, WI, USA aut NATIONALLICENCE 700 1- Dillon Jr Robert Department of Biology, College of Charleston, 29424, Charleston, SC, USA aut NATIONALLICENCE 700 1- Johnson Pieter Ecology and Evolutionary Biology, University of Colorado, 80309, Boulder, CO, USA aut NATIONALLICENCE 773 0- EcoHealth Springer-Verlag 8/4(2011-12-01), 485-500 1612-9202 8:4<485 2011 8 10393 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer