A5037775971- Marine animal studies overview
- Marine and fisheries research
- Marine and coastal plant biology
- Coral and Marine Ecosystems Studies
- Arctic and Antarctic ice dynamics
- Underwater Acoustics Research
- Cephalopods and Marine Biology
- Species Distribution and Climate Change
- Avian ecology and behavior
- Oceanographic and Atmospheric Processes
- Animal Vocal Communication and Behavior
- Marine and coastal ecosystems
- Isotope Analysis in Ecology
- Turtle Biology and Conservation
- CAR-T cell therapy research
- Coastal and Marine Management
- Wildlife Ecology and Conservation
- Ichthyology and Marine Biology
- Immune Cell Function and Interaction
- Arctic and Russian Policy Studies
- Polar Research and Ecology
- Data Analysis with R
- Tropical and Extratropical Cyclones Research
- Ocean Acidification Effects and Responses
- Maritime Navigation and Safety
Oregon State University
2016-2025
Oregon Department of Fish and Wildlife
2016-2025
NOAA National Marine Fisheries Service Southwest Fisheries Science Center
2009-2023
University of Hawaiʻi at Mānoa
2006-2023
Migration Institute of Australia
2022
STMicroelectronics (France)
2022
Universitat Politècnica de València
2022
Texas A&M University at Galveston
2022
Center for Environmental Health
2022
Cornell University
2022
We use hydrographic data from the California Cooperative Oceanic Fisheries Investigations program to explore spatial and temporal variability of dissolved oxygen (DO) in southern Current System (CCS) over period 1984–2006. Large declines DO (up 2.1 μ mol/kg/y) have been observed throughout domain, with largest relative occurring below thermocline (mean decrease 21% at 300 m). Linear trends were significant ( p < 0.05) majority stations down 500 m. The hypoxic boundary (∼60 mol/kg) has...
We report on a wintering area off the Pacific coast of Central America for humpback whales ( Megaptera novaeangliae ) migrating from feeding areas Antarctica. document seven individuals, including mother/calf pair, that made this migration (approx. 8300 km), longest movement undertaken by any mammal. Whales were observed as far north 11° N Costa Rica, in an also used boreal population during opposite winter season, resulting unique spatial overlap between Northern and Southern Hemisphere...
In terrestrial systems, the green wave hypothesis posits that migrating animals can enhance foraging opportunities by tracking phenological variation in high-quality forage across space (i.e., “resource waves”). To track resource waves, may rely on proximate cues and/or memory of long-term average phenologies. Although there is growing evidence migrants, such drivers remain unevaluated migratory marine megafauna. Here we present a test system. We compare 10 years blue whale movement data...
Marine mammals can play important ecological roles in aquatic ecosystems, and their presence be key to community structure function. Consequently, marine are often considered indicators of ecosystem health flagship species. Yet, historical population declines caused by exploitation, additional current threats, such as climate change, fisheries bycatch, pollution maritime development, continue impact many mammal species, at least 25% classified threatened (Critically Endangered, Endangered or...
For the 40 years after end of commercial whaling in 1976, humpback whale populations North Pacific Ocean exhibited a prolonged period recovery. Using mark–recapture methods on largest individual photo-identification dataset ever assembled for cetacean, we estimated annual ocean-basin-wide abundance species from 2002 through 2021. Trends estimates describe strong post-whaling era population recovery 16 875 (± 5955) to peak estimate 33 488 4455) 2012. An apparent 20% decline 2012 2021, 26 662...
ABSTRACT Blue whale locations in the Southern Hemisphere and northern Indian Ocean were obtained from catches (303 239), sightings (4383 records of ≥8058 whales), strandings (103), Discovery marks (2191) recoveries (95), acoustic recordings. Sighting surveys included 7 480 450 km effort plus 14 676 days with unmeasured effort. Groups usually consisted solitary whales (65.2%) or pairs (24.6%); larger feeding aggregations unassociated individuals only rarely observed. rates (groups per 1000...
Effective transboundary conservation of highly migratory marine animals requires international management cooperation as well clear scientific information about habitat use by these species. Populations leatherback turtles (Dermochelys coriacea) in the eastern Pacific have declined >90% during past two decades, primarily due to unsustainable egg harvest and fisheries bycatch mortality. While research efforts on nesting beaches are ongoing, relatively little is known this population...
ESR Endangered Species Research Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsSpecials 10:93-106 (2009) - DOI: https://doi.org/10.3354/esr00239 Behavioural estimation of blue whale movements in Northeast Pacific from state-space model analysis satellite tracks Helen Bailey1,*,**, Bruce R. Mate2,**, Daniel M. Palacios1,3, Ladd Irvine2, Steven J. Bograd1, P. Costa4 1NOAA/NMFS/SWFSC/Environmental Division,...
Summary Management of highly migratory species is reliant on spatially and temporally explicit information their distribution abundance. Satellite telemetry provides time‐series data individual movements. However, these are underutilized in management applications part because they provide presence‐only rather than abundance such as density. Eastern North Pacific blue whales listed threatened, ship strikes have been suggested a key factor limiting recovery. Here, we developed...
Abstract Aim Advances in ecological and environmental modelling offer new opportunities for estimating dynamic habitat suitability highly mobile species supporting management strategies at relevant spatiotemporal scales. We used an ensemble approach to predict daily, year‐round a migratory species, the blue whale ( Balaenoptera musculus ), demonstrate application evaluating dynamics of their exposure ship strike risk. Location The California Current Ecosystem (CCE) Southern Bight (SCB), USA....
The distributions of migratory species in the ocean span local, national and international jurisdictions. Across these ecologically interconnected regions, marine interact with anthropogenic stressors throughout their lives. Migratory connectivity, geographical linking individuals populations cycles, influences how spatial temporal dynamics affect animals scale up to influence population abundance, distribution persistence. Population declines many have led calls for connectivity knowledge,...
Abstract While ecologists have long recognized the influence of spatial resolution on species distribution models (SDMs), they given relatively little attention to temporal resolution. Considering resolutions is critical in modelling highly mobile marine animals, as interact with dynamic oceanographic processes that vary at time‐scales from seconds decades. We guide selecting best match ecological questions and ecosystems, managers applying these models. group environmental variables used...
Abstract Aim Changes in abundance and shifts distribution as a result of warming climate have been documented for many marine species, but opportunities to test our ability forecast such changes limited. This study evaluates the habitat‐based density models accurately cetacean during novel year with unprecedented warm ocean temperatures caused by sustained heatwave. Location California Current Ecosystem, USA. Methods We constructed generalized additive based on sighting environmental data...
Abstract Marine heatwaves cause widespread environmental, biological, and socio-economic impacts, placing them at the forefront of 21st-century management challenges. However, vary in intensity evolution, a paucity information on how this variability impacts marine species limits our ability to proactively manage for these extreme events. Here, we model effects four recent (2014, 2015, 2019, 2020) Northeastern Pacific distributions 14 top predator ecological, cultural, commercial importance....
Cetacean sighting data collected under various programmes in Colombian Pacific waters were collated with the goal of assessing distribution and abundance patterns all species occurring exclusive economic zone (EEZ). Distribution maps are presented for 19 one genus based on 603 sightings between 1986 2008. Ordered by frequency, these were: humpback whale (Megaptera novaeangliae); striped dolphin (Stenella coeruleoalba); common bottlenose (Tursiops truncatus); pantropical spotted attenuata);...
Mortality and injuries caused by ship strikes in U.S. waters are a cause of concern for the endangered population blue whales (Balaenoptera musculus) occupying eastern North Pacific. We sought to determine which areas along West Coast most important whether those change inter-annually. Argos-monitored satellite tags were attached 171 off California during summer/early fall from 1993 2008. analyzed portions tracks that occurred within Exclusive Economic Zone defined ‘home range’ (HR) ‘core...
Integrating behavior and physiology is critical to formulating new hypotheses on the evolution of animal life-history strategies. Migratory capital breeders acquire most energy they need sustain migration, gestation, lactation before parturition. Therefore, when predicting impact environmental variation such species, a mechanistic understanding their migratory required. Using baleen whales as model system, we developed dynamic state variable that captures interplay among behavioral...
Abstract Defining priority areas and risk evaluation is of utmost relevance for endangered species` conservation. For the blue whale ( Balaenoptera musculus ), we aim to assess environmental habitat selection drivers, conservation overlap with vessel traffic off northern Chilean Patagonia (NCP). this, implemented a single-step continuous-time correlated-random-walk model which accommodates observational error movement parameters variation in relation oceanographic variables. Spatially...