Index Catalog // ScholarsArchive@OSU

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:: Wildlife, Oregon State University, c/o US Environmental Protection Agency, Corvallis, OR 97333, USA P. R

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:: DOI 10.1007/s10661-011-2181-9 R. M. Hughes (*) Department of Fisheries and Wildlife, Oregon State

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:: sites on each river. The rivers lacked large main-stem dams, and point sources, if any, met state and

Headwater Streams and Wetlands are Critical for Sustaining Fish, Fisheries, and Ecosystem Services

Creator:: Colvin, Susan A. R., Sullivan, S. Mazeika P., Shirey, Patrick D., Colvin, Randall W., Winemiller, Kirk O., Hughes, Robert M., Fausch, Kurt D., Infante, Dana M., Olden, Julian D., Bestgen, Kevin R., Danehy, Robert J., and Eby, Lisa
Abstract:: Headwater streams and wetlands are integral components of watersheds that are critical for biodiversity, fisheries, ecosystem functions, natural resource-based economies, and human society and culture. These and other ecosystem services provided by intact and clean headwater streams and wetlands are critical for a sustainable future. Loss of legal protections for...
Resource Type:: Article
Full Text:: tributaries, respectively) comprising river networks of the conterminous United States as characterized by

Characterizing coal and mineral mines as a regional source of stress to stream fish assemblages

Creator:: Daniel, Wesley M., Infante, Dana M., Hughes, Robert M., Tsang, Yin-Phan, Esselman, Peter C., Wieferich, Daniel, Herreman, Kyle, Cooper, Arthur R., Wang, Lizhu, and Taylor, William W.
Abstract:: Mining impacts on stream systems have historically been studied over small spatial scales, yet investigations over large areas may be useful for characterizing mining as a regional source of stress to stream fishes. The associations between co-occurring stream fish assemblages and densities of various “classes” of mining occurring in the...
Resource Type:: Article
Full Text:: conterminous United States (US), every state has mining within its borders. Coal or mineral mines occur in 2.7

Stream biomonitoring using macroinvertebrates around the globe: a comparison of large-scale programs

Creator:: Buss, Daniel F., Carlisle, Daren M., Chon, Tae-Soo, Culp, Joseph, Harding, Jon S., Keizer-Vlek, Hanneke E., Robinson, Wayne A., Strachan, Stephanie, Thirion, Christa, and Hughes, Robert M.
Abstract:: Water quality agencies and scientists are increasingly adopting standardized sampling methodologies because of the challenges associated with interpreting data derived from dissimilar protocols. Here, we compare 13 protocols for monitoring streams from different regions and countries around the globe. Despite the spatially diverse range of countries assessed, many aspects of...
Resource Type:: Article
Full Text:: Institute and Department of Fisheries and Wildlife, Oregon State University, Corvallis, OR, USA e-mail

AFS Position Paper and Policy on Mining and Fossil Fuel Extraction

Creator:: Hughes, Robert M., Amezcua, Felipe, Chambers, David M., Daniel, Wesley M., Franks, James S., Franzin, William, MacDonald, Donald, Merriam, Eric, Neall, George, dos Santos Pompeu, Paulo, Reynolds, Lou, and Woody, Carol Ann
Abstract:: Following a four-year period of writing, member comment, and multiple revisions, the AFS Position Paper and Policy on Mining and Fossil Fuel Extraction was approved unanimously by the membership at the Society's annual business meeting August 19, 2015, in Portland, Oregon. The entire document can be read at fisheries.org/policy_statements; a...
Resource Type:: Article
Full Text:: Institute and Department of Fisheries & Wildlife, Oregon State University, Corvallis, OR 97333. E-mail

Defining quantitative stream disturbance gradients and the additive role of habitat variation to explain macroinvertebrate taxa richness

Creator:: Ligeiro, Raphael, Hughes, Robert M., Kaufmann, Philip R., Macedo, Diego R., Firmiano, Kele R., Ferreira, Wander R., Oliveira, Deborah, Melo, Adriano S., and Callisto, Marcos
Abstract:: Most studies dealing with the use of ecological indicators and other applied ecological research rely on some definition or concept of what constitutes least-, intermediate- and most-disturbed condition. Currently, most rigorous methodologies designed to define those conditions are suited to large spatial extents (nations, ecoregions) and many sites (hundreds to...
Resource Type:: Article
Full Text:: Horizonte, Minas Gerais, Brazil Department of Fisheries & Wildlife, Oregon State University and Amnis Opes

Ecological assessment of a southeastern Brazil reservoir

Creator:: Martins, Isabela, Sanches, Barbara, Kaufmann, Philip Robert, Hughes, Robert M., Santos, Gilmar Bastos, Molozzi, Joseline, and Callisto, Marcos
Abstract:: Reservoirs are artificial ecosystems with multiple functions having direct and indirect benefits to humans; however, they also cause ecological changes and influence the composition and structure of aquatic biota. Our objectives were to: (1) assess the environmental condition of Nova Ponte Reservoir, Minas Gerais state, southeastern Brazil; and (2) determine...
Resource Type:: Article
Full Text:: , Oregon State University, Corvallis, OR, United States. 5Departamento de Biologia Geral, Universidade

A Review of Urban Water Body Challenges and Approaches: (1) Rehabilitation and Remediation

Creator:: Hughes, Robert M., Dunham, Susie, Maas-Hebner, Kathleen G., Yeakley, J. Alan, Schreck, Carl, Harte, Michael, Molina, Nancy, Shock, Clinton C., Kaczynski, Victor W., and Schaeffer, Jeff
Abstract:: We review how urbanization alters aquatic ecosystems, as well as actions that managers can take to remediate urban waters. Urbanization affects streams by fundamentally altering longitudinal and lateral processes that in turn alter hydrology, habitat, and water chemistry; these effects create physical and chemical stressors that in turn affect the...
Resource Type:: Article
Full Text:: . Hughes Department of Fisheries and Wildlife, Oregon State University, and Amnis Opes Institute, 2895 SE

ScholarsArchive@OSU

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

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

Headwater Streams and Wetlands are Critical for Sustaining Fish, Fisheries, and Ecosystem Services

Characterizing coal and mineral mines as a regional source of stress to stream fish assemblages

Stream biomonitoring using macroinvertebrates around the globe: a comparison of large-scale programs

AFS Position Paper and Policy on Mining and Fossil Fuel Extraction

Defining quantitative stream disturbance gradients and the additive role of habitat variation to explain macroinvertebrate taxa richness

Ecological assessment of a southeastern Brazil reservoir

A Review of Urban Water Body Challenges and Approaches: (1) Rehabilitation and Remediation

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