Index Catalog // ScholarsArchive@OSU

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

Tracking reveals limited interactions between Campbell Albatross and fisheries during the breeding season

Creator:: Sztukowski, Lisa A., van Toor, Mariëlle L., Weimerskirch, Henri, Thompson, David R., Torres, Leigh G., Sagar, Paul M., Cotton, Peter A., and Votier, Stephen C.
Abstract:: Fisheries-related mortality has been influential in driving global declines in seabird populations. Understanding the overlap between seabird distribution and fisheries is one important element in assessing bycatch risk, and may be achieved by tracking the movements of individual birds and fishing vessels. Here, we assess the spatiotemporal overlap between the...
Resource Type:: Article

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:: , Y. V., Burdin, A. M., and Brownell, R. L. (2009). 428 Anthropogenic scarring of western gray

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:: A sense of scale: Foraging cetaceans' use of scale‐dependent

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:: emmeans package in R (Lenth 2019). In addition, a generalized linear model (GLM) was conducted to

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:: Drone Up! Quantifying Whale Behavior From a New

Demography and ecology of southern right whales Eubalaena australis wintering at sub-Antarctic Campbell Island, New Zealand

Creator:: Torres, Leigh G., Rayment, Will, Olavarría, Carlos, Thompson, David R., Graham, Brittany, Baker, C. Scott, Patenaude, Nathalie, Bury, Sarah Jane, Boren, Laura, Parker, Graham, and Carroll, Emma L.
Abstract:: Since the decimation of the southern right whale Eubalaena australis population in New Zealand by whaling, research on its recovery has focused on the wintering ground at the Auckland Islands, neglecting potentially important wintering habitat at Campbell Island. For the first time in 20 years we conducted an expedition to...
Resource Type:: Article

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:: use standard terminology. A unified analytical framework [through free software like R (R Development

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:: ., Croll, D. A., and Tershy, B. R. (2002). High feeding costs limit dive time in the largest whales. J

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:: BPMs, respectively. HOLDMAN ET AL.: HARBOR PORPOISE DISTRIBUTION AND HABITAT USE 175 T a bl e 2 . R

ScholarsArchive@OSU

Classification of Animal Movement Behavior through Residence in Space and Time

Tracking reveals limited interactions between Campbell Albatross and fisheries during the breeding season

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

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

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

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

Demography and ecology of southern right whales Eubalaena australis wintering at sub-Antarctic Campbell Island, New Zealand

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

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

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

Limit your search

Academic Affiliation

Creator

Date

Decade

Degree Field

Degree Level

Degree Name

Language

License

Non-Academic Affiliation

Peer Reviewed

Resource Type

Rights Statement

Subject

Search Constraints

Search Results

Limit your search