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Structural Variations of Headwater Stream Food Webs Along Geophysical Gradients at the HJ Andrews Experimental Forest

Creator:: Zatkos, Lauren E.
Abstract:: The structure of food webs and how they relate to community stability has been an important debate in ecology. Specifically, predictability of web shape and how it influenced by surrounding landscapes is one of the main goals of such discussions. Headwater streams provide a study template that is of interest...
Resource Type:: Masters Thesis
Full Text:: : Structural Variations of Headwater Stream Food Webs Along Geophysical Gradients at the HJ Andrews

Relationship Between Wildfire, Salvage Logging, and Occupancy of Nesting Territories by Northern Spotted Owls

Creator:: Clark, Darren A., Anthony, Robert G., and Andrews, Lawrence S.
Abstract:: The northern spotted owl (Strix occidentalis caurina) is one of the most intensively studied raptors in the world; however, little is known about the impacts of wildfire on the subspecies and how they use recently burned areas. Three large-scale wildfires in southwest Oregon provided an opportunity to investigate the short-term...
Resource Type:: Article
Full Text:: Fish and Wildlife Research Unit, Department of Fisheries and Wildlife, Oregon State University, 104

Macondo-1 well oil-derived polycyclic aromatic hydrocarbons in mesozooplankton from the northern Gulf of Mexico

Creator:: Mitra, Siddhartha, Kimmel, David G., Snyder, Jessica, Scalise, Kimberly, McGlaughon, Benjamin D., Roman, Michael R., Jahn, Ginger L., Pierson, James J., Brandt, Stephen B., Montoya, Joseph P., Rosenbauer, Robert J., Lorenson, Thomas D., Wong, Florence L., and Campbell, Pamela L.
Abstract:: Mesozooplankton (>200 μm) collected in August and September of 2010 from the northern Gulf of Mexico show evidence of exposure to polycyclic aromatic hydrocarbons (PAHs). Multivariate statistical analysis revealed that distributions of PAHs extracted from mesozooplankton were related to the oil released from the ruptured British Petroleum Macondo-1 (M-1) well...
Resource Type:: Article
Full Text:: /2011GL049505 1Auxiliary materials are available in the HTML. doi:10.1029/ 2011GL049505. GEOPHYSICAL RESEARCH

Target loads of atmospheric sulfur and nitrogen deposition for protection of acid sensitive aquatic resources in the Adirondack Mountains, New York

Creator:: Sullivan, T. J., Cosby, B. J., Driscoll, C. T., McDonnell, T. C., Herlihy, A. T., and Burns, D. A.
Abstract:: The dynamic watershed acid-base chemistry model of acidification of groundwater in catchments (MAGIC) was used to calculate target loads (TLs) of atmospheric sulfur and nitrogen deposition expected to be protective of aquatic health in lakes in the Adirondack ecoregion of New York. The TLs were calculated for two future dates...
Resource Type:: Article
Full Text:: American Geophysical Union 0043-1397/12/2011WR011171 W01547 1 of 16 WATER RESOURCES RESEARCH, VOL. 48

Assessment of vessel disturbance to gray whales to inform sustainable ecotourism

Creator:: Sullivan, Florence A. and Torres, Leigh G.
Abstract:: Ecotourism is a movement that seeks to sustain local communities by uniting conservation, travel, and education. To minimize effects on animal behavior, ecotourism operations must be carefully managed. Local management efforts that can be tailored to the specific area and animals may be more successful than broad‐scale efforts that may...
Resource Type:: Article

Movement patterns and marine habitat associations of juvenile loggerhead sea turtles (Caretta caretta) in the southwestern Atlantic Ocean

Creator:: Barceló, Caren
Abstract:: Bycatch, or the incidental capture of non-target species, has been implicated as one of the main factors leading to population declines of many large marine vertebrates, including sea turtles. To effectively manage and conserve these long-lived species, their marine distribution, high use areas, foraging habitats, and regions of highest likelihood...
Resource Type:: Masters Thesis
Full Text:: active foraging behavior from likely passive movement of tracked juvenile loggerheads in ocean

Integrating fleets, markets and ocean dynamics : a bioeconomic analysis of the Oregon ocean shrimp fishery

Creator:: Gallagher, Charmaine Marie
Abstract:: Questions relating to economic performance, biological conservation and variation in resource abundance and harvest of ocean shrimp have led to increasing pressure for management action. Developing effective management policies for this highly variable resource requires a comprehensive understanding of the fishery and marine processes. Important factors in understanding the fishery...
Resource Type:: Dissertation
Full Text:: the oceans. Economic Perspectives. U.S. Department of State Electronic Journal, 14-16. Vasconcellos

Gravel disturbance impacts on salmon habitat and stream health : volume II : technical background report

Creator:: Williamson, Kenneth J., Bella, David A., Beschta, Robert L., Grant, Gordon, Klingeman, Peter C., Li, Hiram W., Nelson, Peter O., Castillo, Gonzalo, Lorz, Tom, Meleason, Mark, Minear, Paula, Moret, Stephanie, Nam, Ilgi, Reiter, Maryanne, and Wieland, Lisa
Abstract:: A report for the Oregon Division of State Lands.
Resource Type:: Technical Report
Full Text:: Research Institute Patricia J. Easley, Oregon Water Resources Research Institute The contents of this

Prey Patch Patterns Predict Habitat Use by Top Marine Predators with Diverse Foraging Strategies

Creator:: Benoit-Bird, Kelly J., Battaile, Brian C., Heppell, Scott A., Hoover, Brian, Irons, David, Jones, Nathan, Kuletz, Kathy J., Nordstrom, Chad A., Paredes, Rosana, Suryan, Robert M., Waluk, Chad M., and Trites, Andrew W.
Abstract:: Spatial coherence between predators and prey has rarely been observed in pelagic marine ecosystems. We used measures of the environment, prey abundance, prey quality, and prey distribution to explain the observed distributions of three co-occurring predator species breeding on islands in the southeastern Bering Sea: black-legged kittiwakes (Rissa tridactyla), thick-billed...
Resource Type:: Article
Full Text:: , Rosana Paredes2, Robert M. Suryan2, Chad M. Waluk1, Andrew W. Trites3 1College of Earth, Ocean, and

Trophically transmitted parasites as ecosystem indicators : relationships among parasite community structure, juvenile salmon diet composition, and ocean conditions

Creator:: Losee, James P.
Abstract:: Recent research conducted throughout the Northern California Current (NCC) on the ecology of Pacific salmon (Oncorhynchus spp.) indicates that variable ocean conditions affect the community composition of zooplankton in the nearshore environment which, in turn, can affect the quality of prey for fish, sea birds and mammals. Interannual variability in...
Resource Type:: Masters Thesis
Full Text:: Recent research conducted throughout the Northern California Current (NCC) on the ecology of Pacific

ScholarsArchive@OSU

Structural Variations of Headwater Stream Food Webs Along Geophysical Gradients at the HJ Andrews Experimental Forest

Relationship Between Wildfire, Salvage Logging, and Occupancy of Nesting Territories by Northern Spotted Owls

Macondo-1 well oil-derived polycyclic aromatic hydrocarbons in mesozooplankton from the northern Gulf of Mexico

Target loads of atmospheric sulfur and nitrogen deposition for protection of acid sensitive aquatic resources in the Adirondack Mountains, New York

Assessment of vessel disturbance to gray whales to inform sustainable ecotourism

Movement patterns and marine habitat associations of juvenile loggerhead sea turtles (Caretta caretta) in the southwestern Atlantic Ocean

Integrating fleets, markets and ocean dynamics : a bioeconomic analysis of the Oregon ocean shrimp fishery

Gravel disturbance impacts on salmon habitat and stream health : volume II : technical background report

Prey Patch Patterns Predict Habitat Use by Top Marine Predators with Diverse Foraging Strategies

Trophically transmitted parasites as ecosystem indicators : relationships among parasite community structure, juvenile salmon diet composition, and ocean conditions

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