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Patterns in Catch Per Unit Effort of Native Prey Fish and Alien Piscivorous Fish in 7 Pacific Northwest USA Rivers

Creator:: Hughes, Robert M. and Herlihy, Alan T.
Abstract:: OBJECTIVE. Hospital readmissions are a current target of initiatives to reduce healthcare costs. This study quantified the association between having a clinical culture positive for 1 of 3 prevalent hospital-associated organisms and time to hospital readmission. DESIGN. Retrospective cohort study. PATIENTS AND SETTING. Adults admitted to an academic, tertiary care...
Resource Type:: Article
Full Text:: Institute. E-mail: hughes.bob@epa.gov Alan T. Herlihy Senior Research Professor, Department of Fisheries

Non-wadeable river bioassessment: spatial variation of benthic diatom assemblages in Pacific Northwest rivers, USA

Creator:: Pan, Yangdong, Hughes, Robert M., Herlihy, Alan T., and Kaufmann, Philip R.
Abstract:: Current bioassessment efforts are focused on small wadeable streams, at least partly because assessing ecological conditions in non-wadeable large rivers poses many additional challenges. In this study, we sampled 20 sites in each of seven large rivers in the Pacific Northwest, USA, to characterize variation of benthic diatom assemblages among...
Resource Type:: Article
Full Text:: • Robert M. Hughes • Alan T. Herlihy • Philip R. Kaufmann Received: 21 June 2011 / Revised: 22 November

Estimating vertebrate, benthic macroinvertebrate, and diatom taxa richness in raftable Pacific Northwest rivers for bioassessment purposes

Creator:: Hughes, Robert M., Herlihy, Alan T., Gerth, William J., and Pan, Yangdong
Abstract:: The number of sites sampled must be considered when determining the effort necessary for adequately assessing taxa richness in an ecosystem for bioassessment purposes; however, there have been few studies concerning the number of sites necessary for bioassessment of large rivers. We evaluated the effect of sample size (i.e., number...
Resource Type:: Article
Full Text:: taxa richness in raftable Pacific Northwest rivers for bioassessment purposes Robert M. Hughes & Alan

An a priori process for selecting candidate reference lakes for a national survey

Creator:: Herlihy, Alan T., Sobota, Janel Banks, McDonnell, Todd C., Sullivan, Timothy J., Lehmann, Sarah, and Tarquinio, Ellen
Abstract:: One of the biggest challenges when conducting a national-scale assessment of lakes, such as the 2007 US National Lake Assessment (NLA), is finding enough reference lakes to set appropriate expectations for the assessed sites. In the NLA, a random design was used to select lakes for sampling to make unbiased...
Resource Type:: Article
Full Text:: national survey Alan T. Herlihy1 AND Janel Banks Sobota2 Department of Fisheries and Wildlife, Oregon

Ecological effects of nitrogen and sulfur air pollution in the US: what do we know?

Creator:: Greaver, Tara L., Sullivan, Timothy J., Herrick, Jeffrey D., Barber, Mary C., Baron, Jill S., Cosby, Bernard J., Deerhake, Marion E., Dennis, Robin L., Dubois, Jean-Jacques B., Goodale, Christine L., Herlihy, Alan T., Lawrence, Gregory B., Liu, Lingli, Lynch, Jason A., and Novak, Kristopher J.
Abstract:: Four decades after the passage of the US Clean Air Act, air-quality standards are set to protect ecosystems from damage caused by gas-phase nitrogen (N) and sulfur (S) compounds, but not from the deposition of these air pollutants to land and water. Here, we synthesize recent scientific literature on the...
Resource Type:: Article

Harmful algal blooms along the North American west coast region: History, trends, causes, and impacts

Creator:: Lewitus, Alan J., Horner, Rita A., Caron, David A., Garcia-Mendoza, Ernesto, Hickey, Barbara M., Hunter, Matthew, Huppert, Daniel D., Kudela, Raphael M., Langlois, Gregg W., Largier, John L., Lessard, Evelyn J., RaLonde, Raymond, Rensel, J. E. Jack, Strutton, Peter G., Trainer, Vera L., and Tweddle, Jacqueline F.
Abstract:: Along the Pacific coast of North America, from Alaska to Mexico, harmful algal blooms (HABs) have caused losses to natural resources and coastal economies, and have resulted in human sicknesses and deaths for decades. Recent reports indicate a possible increase in their prevalence and impacts of these events on living...
Resource Type:: Article
Full Text:: , causes, and impacts Alan J. Lewitus a,*, Rita A. Horner b, David A. Caron c, Ernesto Garcia-Mendoza d

Female elk contacts are neither frequency nor density dependent

Creator:: Cross, P. C., Creech, Tyler G., Ebinger, M. R., Manlove, K., Irvine, K., Henningsen, J., Roberson, J., Scurlock, B. M., and Creel, S.
Abstract:: Identifying drivers of contact rates among individuals is critical to understanding disease dynamics and implementing targeted control measures. We studied the interaction patterns of 149 female elk (Cervus canadensis) distributed across five different regions of western Wyoming over three years, defining a contact as an approach within one body length...
Resource Type:: Article
Full Text:: of London B 271:625–634. Lloyd-Smith, J. O., S. J. Schreiber, P. E. Kopp, and W. M. Getz. 2005b

Predation on an Upper Trophic Marine Predator, the Steller Sea Lion: Evaluating High Juvenile Mortality in a Density Dependent Conceptual Framework

Creator:: Horning, Markus and Mellish, Jo-Ann E.
Abstract:: The endangered western stock of the Steller sea lion (Eumetopias jubatus) - the largest of the eared seals - has declined by 80% from population levels encountered four decades ago. Current overall trends from the Gulf of Alaska to the Aleutian Islands appear neutral with strong regional heterogeneities. A published...
Resource Type:: Article
Full Text:: in natality and depressed juvenile survival during the height of the decline in the mid-late 1980’s

News & Views, 2010

Creator:: Hall, Jim
Resource Type:: Other
Full Text:: appointments such as his, Grant is especially proud to be a third-generation OSU faculty member. W. Alan Wentz

Effects of Low-Density Feeding on Elk-Fetus Contact Rates on Wyoming Feedgrounds

Creator:: Creech, Tyler G., Cross, Paul C., Scurlock, Brandon M., Maichak, Eric J., Rogerson, Jared D., Henningsen, John C., and Creel, Scott
Abstract:: High seroprevalance for Brucella abortus among elk on Wyoming feedgrounds suggests that supplemental feeding may influence parasite transmission and disease dynamics by altering the rate at which elk contact infectious materials in their environment. We used proximity loggers and video cameras to estimate rates of elk-to-fetus contact (the primary source...
Resource Type:: Article
Full Text:: Pharmaceuticals, Fort Collins, Colorado, USA. Lloyd-Smith, J. O., S. J. Schreiber, P. E. Kopp, and W. M. Getz

ScholarsArchive@OSU

Patterns in Catch Per Unit Effort of Native Prey Fish and Alien Piscivorous Fish in 7 Pacific Northwest USA Rivers

Non-wadeable river bioassessment: spatial variation of benthic diatom assemblages in Pacific Northwest rivers, USA

Estimating vertebrate, benthic macroinvertebrate, and diatom taxa richness in raftable Pacific Northwest rivers for bioassessment purposes

An a priori process for selecting candidate reference lakes for a national survey

Ecological effects of nitrogen and sulfur air pollution in the US: what do we know?

Harmful algal blooms along the North American west coast region: History, trends, causes, and impacts

Female elk contacts are neither frequency nor density dependent

Predation on an Upper Trophic Marine Predator, the Steller Sea Lion: Evaluating High Juvenile Mortality in a Density Dependent Conceptual Framework

News & Views, 2010

Effects of Low-Density Feeding on Elk-Fetus Contact Rates on Wyoming Feedgrounds

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