Index Catalog // ScholarsArchive@OSU

Endogenous ROS levels in C. elegans under exogenous stress support revision of oxidative stress theory of life-history tradeoffs

Creator:: Smith, Samson W., Latta, Leigh C., Denver, Dee R., and Estes, Suzanne
Abstract:: BACKGROUND: The oxidative stress theory of life-history tradeoffs states that oxidative stress caused by damaging free radicals directly underpins tradeoffs between reproduction and longevity by altering the allocation of energetic resources between these tasks. We test this theory by characterizing the effects of exogenous oxidative insult and its interaction with...
Resource Type:: Article

A sense of scale : Foraging cetaceans’ use of scale-dependent multimodal sensory systems

Creator:: Torres, Leigh G.
Abstract:: Research on cetacean foraging ecology is central to our understanding of their spatial and behavioral ecology. Yet, functional mechanisms by which cetaceans detect prey across different scales remain unclear. Here, I postulate that cetaceans utilize a scale-dependent, multimodal sensory system to assess and increase prey encounters. I review the literature...
Resource Type:: Article
Full Text:: ’ use of scale-dependent multimodal sensory systems LEIGH G. TORRES,1 Marine Mammal Institute

Process-Based Modeling to Assess the Effects of Recent Climatic Variation on Site Productivity and Forest Function across Western North America

Creator:: Waring, Richard H., Coops, Nicholas C., Mathys, Amanda, Hilker, Thomas, and Latta, Greg
Abstract:: A process-based forest growth model, 3-PG (Physiological Principles Predicting Growth), parameterized with values of soil properties constrained by satellite-derived estimates of maximum leaf area index (LAI[subscript max]), was run for Douglas-fir (Pseudotsuga menziesii) to contrast the extent to which site growth potential might vary across western North America between a...
Resource Type:: Article
Full Text:: Function across Western North America Waring RH, Coops NC, Mathys A, Hilker T, Latta G. (2014). Process

Biomass production from the US forest and agriculture sectors in support of a renewable electricity standard

Creator:: White, Eric M., Latta, Greg, Alig, Ralph J., Skog, Kenneth E., and Adams, Darius M.
Abstract:: Production of renewable energy from biomass has been promoted as means to improve greenhouse gas balance in energy production, improve energy security, and provide jobs and income. However, uncertainties remain as to how the agriculture and forest sectors might jointly respond to increased demand for bioelectricity feedstocks and the potential...
Resource Type:: Article
Full Text:: sectors in support of a renewable electricity standard Eric M. White a,n, Greg Latta a, Ralph J. Alig b

Do gray whales count calories? Comparing energetic values of gray whale prey across two different feeding grounds in the eastern North Pacific

Creator:: Hildebrand, Lisa, Bernard, Kim S., and Torres, Leigh G.
Abstract:: Predators must consume enough prey to support costly events, such as reproduction. Meeting high energetic requirements is particularly challenging for migrating baleen whales as their feeding seasons are typically restricted to a limited temporal window and marine prey are notoriously patchy. We assessed the energetic value of the six most...
Resource Type:: Article
Full Text:: Pacific Lisa Hildebrand1* , Kim S. Bernard2 and Leigh G. Torres1 1 Geospatial Ecology of Marine Megafauna

Drone Up! Quantifying Whale Behavior From a New Perspective Improves Observational Capacity

Creator:: Torres, Leigh G., Nieukirk, Sharon L., Lemos, Leila, and Chandler, Todd E.
Abstract:: During traditional boat-based surveys of marine megafauna, behavioral observations are typically limited to records of animal surfacings obtained from a horizontal perspective. Achieving an aerial perspective has been restricted to brief helicopter or airplane based observations that are costly, noisy, and risky. The emergence of commercial small unmanned aerial systems...
Resource Type:: Article
Full Text:: University of Western Australia, Australia *Correspondence: Leigh G. Torres Leigh.torres@oregonstate.edu

Drone Up! Quantifying Whale Behavior From a New Perspective Improves Observational Capacity

Creator:: Lemos, Leila, Chandler, Todd E., Torres, Leigh G., and Nieukirk, Sharon L.
Abstract:: During traditional boat-based surveys of marine megafauna, behavioral observations are typically limited to records of animal surfacings obtained from a horizontal perspective. Achieving an aerial perspective has been restricted to brief helicopter or airplane based observations that are costly, noisy, and risky. The emergence of commercial small unmanned aerial systems...
Resource Type:: Article
Full Text:: University of Western Australia, Australia *Correspondence: Leigh G. Torres Leigh.torres@oregonstate.edu

Acoustic monitoring reveals the times and tides of harbor porpoise (Phocoena phocoena) distribution off central Oregon, U.S.A.

Creator:: Holdman, Amanda K., Haxel, Joseph H., Klinck, Holger, and Torres, Leigh G.
Abstract:: Harbor porpoises (Phocoena phocoena) are commonly observed in Oregon's nearshore marine environment yet knowledge of their ecosystem use and behavior remains limited, generating concerns for potential impacts on this species from future coastal development. Passive acoustic monitoring was used to investigate spatial and temporal variations in the presence and foraging...
Resource Type:: Article
Full Text:: of Ornithology, Cornell University, 159 Sapsucker Woods Road, Ithaca, New York, 14850, U.S.A.; LEIGH

Skin Deep: An Assessment of New Zealand Blue Whale Skin Condition

Creator:: Barlow, Dawn R., Pepper, Acacia L., and Torres, Leigh G.
Abstract:: Skin condition assessment of wildlife can provide insight into individual and population health. Yet, logistics can limit skin condition assessment of large whales. We developed a standardized, quantitative protocol using photographs to assess skin condition of blue whales in New Zealand, and demonstrate the value gained by testing hypotheses, documenting...
Resource Type:: Article
Full Text:: condition 1 Dawn R. Barlow1*, Acacia L. Pepper1, Leigh G. Torres1 2 1Geospatial Ecology of Marine

Classification of Animal Movement Behavior through Residence in Space and Time

Creator:: Orben, Rachael A., Thompson, David R., Tolkova, Irina, and Torres, Leigh G.
Abstract:: Identification and classification of behavior states in animal movement data can be complex, temporally biased, time-intensive, scale-dependent, and unstandardized across studies and taxa. Large movement datasets are increasingly common and there is a need for efficient methods of data exploration that adjust to the individual variability of each track. We...
Resource Type:: Article
Full Text:: in Space and Time Leigh G. Torres1*, Rachael A. Orben1, Irina Tolkova2, David R. Thompson3 1

ScholarsArchive@OSU

Endogenous ROS levels in C. elegans under exogenous stress support revision of oxidative stress theory of life-history tradeoffs

A sense of scale : Foraging cetaceans’ use of scale-dependent multimodal sensory systems

Process-Based Modeling to Assess the Effects of Recent Climatic Variation on Site Productivity and Forest Function across Western North America

Biomass production from the US forest and agriculture sectors in support of a renewable electricity standard

Do gray whales count calories? Comparing energetic values of gray whale prey across two different feeding grounds in the eastern North Pacific

Drone Up! Quantifying Whale Behavior From a New Perspective Improves Observational Capacity

Drone Up! Quantifying Whale Behavior From a New Perspective Improves Observational Capacity

Acoustic monitoring reveals the times and tides of harbor porpoise (Phocoena phocoena) distribution off central Oregon, U.S.A.

Skin Deep: An Assessment of New Zealand Blue Whale Skin Condition

Classification of Animal Movement Behavior through Residence in Space and Time

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