Puccinia psidii is the cause of rust disease of many host species in the Myrtaceae family, including guava (Psidium spp.), eucalypt (Eucalyptus spp.), rose apple (Syzygium jambos), and ʻohiʼa (Metrosideros polymorpha). First reported in 1884 on guava in Brazil, the rust has since been detected in South America (Argentina, Brazil, Colombia, Paraguay, Uruguay, and Venezuela), Central America (Cos...

Hydrologic alterations, such as dams, culverts or diversions, can introduce new selection pressures on freshwater fishes, where they are required to adapt to novel environmental conditions. Our study investigated how species adapt to natural and altered stream flow, where we use the threatened Rocky Mountain Sculpin (Cottus sp.) as a model organism. We compared the swimming and station-holding ...

The species indicator approach to forest site classification was evaluated for 210 relatively undisturbed plots established by the USDA Forest Service Forest Inventory and Analysis unit (FIA) in western North Carolina. Plots were classified by low, medium, and high levels of productivity based on IO-year individual tree basal area increment data standardized for initial stocking. Chi-square ana...

Robert J. Luxmoore a,∗, William W. Hargrove a, M. Lynn Tharp a, Wilfred M. Post a, Michael W. Berry b, Karen S. Minser b, Wendell P. Cropper, Jr. c, Dale W. Johnson d, Boris Zeide e, Ralph L. Amateis f, Harold E. Burkhart f, V. Clark Baldwin, Jr. g and Kelly D. Peterson g a Oak Ridge National Laboratory, PO Box 2008, Oak Ridge, TN 37831-6038, USA b Department of Computer Science, 107 Ayres Hall...

Animal Disease Research Unit, USDA-Agricultural Research Service, Washington State University, Pullman, WA, USA , Division of Medical Microbiology, School of Infection and Host Defence, The University of Liverpool, Liverpool, UK, 3 Institute of Virology, University of Zurich, Zurich, Switzerland, 4 U.S. Sheep Experiment Station, USDAAgricultural Research Service, Dubois, Idaho, USA, and Program...

1 Research ecologist, U.S. Department of Agriculture, Forest Service, Pacific Southwest Research Station, 1731 Research Park Dr., Davis, CA 95618. 2 Information Center for the Environment, Department of Environmental Science and Policy, One Shields Ave., University of California, Davis, Davis, CA 95616. 3 National coordinator for experimental forests and ranges, U.S. Department of Agriculture, ...

Hoon Kim, a,b John Ralph,* a,b Fachuang Lu, a,b Sally A. Ralph, c Alain-M. Boudett, d John J. MacKay, e Ronald R. Sederoff, f Takashi Ito, g Shingo Kawai, g Hideo Ohashi g and Takayoshi Higuchi h a US Dairy Forage Research Center, USDA Agricultural Research Service, Madison WI 53706. USA b Department of Forestry, University of Wisconsin, Madison, WI 53706-1598, USA c US Forest Product Laborator...

Domestic goats, Capra hircus, were intentionally introduced to numerous oceanic islands beginning in the sixteenth century. The remarkable ability of C. hircus to survive in a variety of conditions has enabled this animal to become feral and impact native ecosystems on islands throughout the world. Direct ecological impacts include consumption and trampling of native plants, leading to plant co...

A working definition of non-timber value is the difference between the revenues attainable by implementing an infinite horizon timber revenue maximizing cutting rule, and the value of the observed harvest. This non-timber value was estimated for the stands of the Forest Inventory Analysis data in the maple-beech-birch type in Wisconsin. Non-timber values averaged 23 $/ha&r, and were higher than...