Life Sciences Commons^™

Nutrient Enrichment Increases Invertebrate Herbivory And Pathogen Damage In Grasslands, Anne Ebeling, Alex T. Strauss, Peter B. Adler, Carlos A. Arnillas, Isabel C. Barrio, Lori A. Biederman, Elizabeth T. Borer, Miguel N. Bugalho, Maria C. Caldeira, Marc W. Cadotte, Pedro Daleo, Nico Eisenhauer, Anu Eskelinen, Philip A. Fay, Jennifer Firn, Pamela Graff, Nicole Hagenah, Sylvia Haider, Kimberly J. Komatsu, Rebecca L. Mcculley, Charles E. Mitchell, Joslin L. Moore, Jesus Pascual, Pablo L. Peri, Sally A. Power, Suzanne M. Prober, Anita C. Risch, Christiane Roscher, Mahesh Sankaran, Eric W. Seabloom, Holger Schielzeth, Martin Schütz, Karina L. Speziale, Michelle Tedder, Risto Virtanen, Dana M. Blumenthal

Wildland Resources Faculty Publications

1. Plant damage by invertebrate herbivores and pathogens influences the dynamics of grassland ecosystems, but anthropogenic changes in nitrogen and phosphorus availability can modify these relationships.
2. Using a globally distributed experiment, we describe leaf damage on 153 plant taxa from 27 grasslands worldwide, under ambient conditions and with experimentally elevated nitrogen and phosphorus.
3. Invertebrate damage significantly increased with nitrogen addition, especially in grasses and non-leguminous forbs. Pathogen damage increased with nitrogen in grasses and legumes but not forbs. Effects of phosphorus were generally weaker. Damage was higher in grasslands with more precipitation, but climatic conditions did not change effects of nutrients …

Nonnative Phragmites Australis Invasion Into Utah Wetlands, Andrew Kulmatiski, Karen H. Beard, Laura A. Meyerson, Jacob R. Gibson, Karen E. Mock

Wildland Resources Faculty Publications

Phragmites australis (Cav.) Trin. ex Steud. (common reed), already one of the world’s most widespread plant species, has realized rapid range expansion in coastal wetlands of North America in the past century, but little is known about P. australis range expansion in inland wetland systems. We used genetic analyses, aerial photographs, field surveys, and a greenhouse experiment to study the extent and mechanism of nonnative P. australis invasion of Utah wetlands. We collected and genetically analyzed 39 herbarium samples across the state and 225 present-day samples from northern Utah’s major wetland complexes. All samples collected before 1993 and all samples …