Index Catalog // ScholarsArchive@OSU

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

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:: whales was recently documented in New Zealand (Barlow et al., 2018; 52 Torres, 2013). These blue whales

TorresLeighFisheriesWildlifePoorTransferabilitySpecies.pdf

Creator:: Torres, Leigh G., Sutton, Philip J. H., Thompson, David R., and et al.
Abstract:: Species distribution models (SDMs) are increasingly applied in conservation management to predict suitable habitat for poorly known populations. High predictive performance of SDMs is evident in validations performed within the model calibration area (interpolation), but few studies have assessed SDM transferability to novel areas (extrapolation), particularly across large spatial scales...
Full Text:: Habitat Preferences across Ocean Basins Torres, L. G., Sutton, P. J. H., Thompson, D. R., Delord, K

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:: a1111111111 a1111111111 a1111111111 a1111111111 OPENACCESS Citation: Torres LG, Orben RA, Tolkova I

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:: G. TORRES , Marine Mammal Institute, Department of Fisheries and Wildlife, Oregon State University

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:: July 2021 Citation: Hildebrand L, Bernard KS and Torres LG (2021) Do Gray Whales Count Calories

Intra‐ and inter‐annual variation in gray whale body condition on a foraging ground

Creator:: Soledade Lemos, Leila, Burnett, Jonathan D., Chandler, Todd E., Sumich, James L., and Torres, Leigh G.
Abstract:: Baleen whales store energy gained on foraging grounds to support reproduction and other metabolic needs while fasting for long periods during migration. Whale body condition can be used to monitor foraging success, and thus better understand and anticipate individual‐ and population‐level trends in reproduction and survival. We assessed the body...
Resource Type:: Article
Full Text:: AND LEIGH G. TORRES 1 1Geospatial Ecology of Marine Megafauna Lab, Marine Mammal Institute, Fisheries

Addressing Challenges in the Application of Animal Movement Ecology to Aquatic Conservation and Management

Creator:: Ogburn, Matthew B., Mills Flemming, Joanna E., Harrison, Autumn-Lynn, Cooke, Steven J., Torres, Leigh G., and Whoriskey, Frederick G.
Abstract:: The dynamic nature of most environments forces many animals to move to meet their fundamental needs. This is especially true in aquatic environments where shifts in spatial ecology (which are a result of movements) are among the first adaptive responses of animals to changes in ecosystems. Changes in the movement...
Resource Type:: Article
Full Text:: Flemming JE and Torres LG (2017) Addressing Challenges in the Application of Animal Movement Ecology to

ScholarsArchive@OSU

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

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

TorresLeighFisheriesWildlifePoorTransferabilitySpecies.pdf

Classification of Animal Movement Behavior through Residence in Space and Time

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.

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

Intra‐ and inter‐annual variation in gray whale body condition on a foraging ground

Addressing Challenges in the Application of Animal Movement Ecology to Aquatic Conservation and Management

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