The USGS Alaska Science Center Ecosystems Analytics program is a group of quantitative biologists and research statisticians who provide analytical support to USGS scientists to answer challenging ecological topics and management questions for USGS partners.
Rebecca Taylor, Ph.D.
I am a principal investigator who develops new statistical techniques and modifies state-of the-art analytical approaches for complex problems and intractable data.
I focus on hard to study species, and I routinely work in both Bayesian and frequentist paradigms. I create explanatory and predictive models, and I also use methods such as causal inference techniques (directed acyclic graphs, propensity score matching), decision tree algorithms and boosting methods, and nonparametric methods. I program in compiled and interpreted languages, including R. I collaborate locally, nationally, and internationally, with other scientists and statisticians in federal agencies, state agencies, academia, and the private sector.
Education and Certifications
Ph.D. 2009 Montana State University-Bozeman, MT Fish and Wildlife Biology
M.S. 2008 Montana State University-Bozeman, MT Statistics
M.S. 2001 Montana State University-Bozeman, MT Land Resources and Environmental Sciences
B.S. 1991 University of Wisconsin-Madison, WI Natural Science with majors in Wildlife Ecology and Zoology
Science and Products
Ecosystems Analytics
Walrus Research
ASC Walrus Thematic Data Releases
Walrus Haulout and In-water Activity Levels Relative to Vessel Interactions in the Chukchi Sea, 2012-2015
Walrus Used and Available Resource Units for Northeast Chukchi Sea, 2008-2012
Walrus Haulout and In-water Activity Levels Relative to Sea Ice Availability in the Chukchi Sea, 2008-2014

The USGS Alaska Science Center Ecosystems Analytics program is a group of quantitative biologists and research statisticians who provide analytical support to USGS scientists to answer challenging ecological topics and management questions for USGS partners.
Sea ice in the Chukchi Sea in 2013.
Sea ice in the Chukchi Sea in 2013.
Walrus reflections in the water. Taken from a USGS research cruise in the Chukchi Sea,
Walrus reflections in the water. Taken from a USGS research cruise in the Chukchi Sea,
Pacific walrus resting on ice in the Chukchi Sea, Alaska. This field work was part a satellite tagging expedition in the northwest Chukchi Sea to understand movement patterns, foraging behaviors of walruses and important summering habitats.
Pacific walrus resting on ice in the Chukchi Sea, Alaska. This field work was part a satellite tagging expedition in the northwest Chukchi Sea to understand movement patterns, foraging behaviors of walruses and important summering habitats.
Assessing the sustainability of Pacific walrus harvest in a changing environment
DNA-based studies and genetic diversity indicator assessments are complementary approaches to conserving evolutionary potential
Assessing the population consequences of disturbance and climate change for the Pacific walrus
Assessing the sustainability of Pacific walrus harvest in a changing environment
Exploring effects of vessels on walrus behaviors using telemetry, automatic identification system data and matching
Estimating reproductive and juvenile survival rates when offspring ages are uncertain: A novel multievent mark-resight model with beluga whale case study
Brown bear–sea otter interactions along the Katmai coast: Terrestrial and nearshore communities linked by predation
Barrier islands influence the assimilation of terrestrial energy in nearshore fishes
Estimating Pacific walrus abundance and survival with multievent mark-recapture models
Regional walrus abundance estimate in the United States Chukchi Sea in autumn
Abundance and distribution of sea otters (Enhydra lutris) in the southcentral Alaska stock, 2014, 2017, and 2019
Design considerations for estimating survival rates with standing age structures
Non-USGS Publications**
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
Code to Estimate Walrus Herd Density at Multiple Terrestrial Haulouts
Science and Products
Ecosystems Analytics
Walrus Research
ASC Walrus Thematic Data Releases
Walrus Haulout and In-water Activity Levels Relative to Vessel Interactions in the Chukchi Sea, 2012-2015
Walrus Used and Available Resource Units for Northeast Chukchi Sea, 2008-2012
Walrus Haulout and In-water Activity Levels Relative to Sea Ice Availability in the Chukchi Sea, 2008-2014

The USGS Alaska Science Center Ecosystems Analytics program is a group of quantitative biologists and research statisticians who provide analytical support to USGS scientists to answer challenging ecological topics and management questions for USGS partners.
The USGS Alaska Science Center Ecosystems Analytics program is a group of quantitative biologists and research statisticians who provide analytical support to USGS scientists to answer challenging ecological topics and management questions for USGS partners.
Sea ice in the Chukchi Sea in 2013.
Sea ice in the Chukchi Sea in 2013.
Walrus reflections in the water. Taken from a USGS research cruise in the Chukchi Sea,
Walrus reflections in the water. Taken from a USGS research cruise in the Chukchi Sea,
Pacific walrus resting on ice in the Chukchi Sea, Alaska. This field work was part a satellite tagging expedition in the northwest Chukchi Sea to understand movement patterns, foraging behaviors of walruses and important summering habitats.
Pacific walrus resting on ice in the Chukchi Sea, Alaska. This field work was part a satellite tagging expedition in the northwest Chukchi Sea to understand movement patterns, foraging behaviors of walruses and important summering habitats.
Assessing the sustainability of Pacific walrus harvest in a changing environment
DNA-based studies and genetic diversity indicator assessments are complementary approaches to conserving evolutionary potential
Assessing the population consequences of disturbance and climate change for the Pacific walrus
Assessing the sustainability of Pacific walrus harvest in a changing environment
Exploring effects of vessels on walrus behaviors using telemetry, automatic identification system data and matching
Estimating reproductive and juvenile survival rates when offspring ages are uncertain: A novel multievent mark-resight model with beluga whale case study
Brown bear–sea otter interactions along the Katmai coast: Terrestrial and nearshore communities linked by predation
Barrier islands influence the assimilation of terrestrial energy in nearshore fishes
Estimating Pacific walrus abundance and survival with multievent mark-recapture models
Regional walrus abundance estimate in the United States Chukchi Sea in autumn
Abundance and distribution of sea otters (Enhydra lutris) in the southcentral Alaska stock, 2014, 2017, and 2019
Design considerations for estimating survival rates with standing age structures
Non-USGS Publications**
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.