Honors & Awards
Stanford Graduate Fellowship (SGF), Stanford University (2017)
NSF GRFP, National Science Foundation (2018)
Education & Certifications
MS, Northwestern University, Environmental Engineering & Science (2015)
BS, Northwestern University, Environmental Engineering (2015)
Current Research and Scholarly Interests
Migratory species present unique challenges and opportunities for both ecologists and resource managers. This is particularly true for oceanic predators migrating through expansive, highly-dynamic habitats. In my research, I explore many elements of such migratory behavior:
- Environmental and oceanographic processes influencing migration
- The role of social information and collective behavior in migration
- Tools for observing migratory behavior across scales
- Equitable and dynamic habitat management for protection of migratory species and human activities
- How adaptive capacity shapes the Adapt, React, Cope response to climate impacts: insights from small-scale fisheries CLIMATIC CHANGE 2021; 164 (1-2)
Predator‐scale spatial analysis of intra‐patch prey distribution reveals the energetic drivers of rorqual whale super‐group formation
View details for DOI 10.1111/1365-2435.13763
Animal-Borne Metrics Enable Acoustic Detection of Blue Whale Migration.
Current biology : CB
Linking individual and population scales is fundamental to many concepts in ecology , including migration [2, 3]. This behavior is a critical  yet increasingly threatened  part of the life history of diverse organisms. Research on migratory behavior is constrained by observational scale , limiting ecological understanding and precise management of migratory populations in expansive, inaccessible marine ecosystems . This knowledge gap is magnified for dispersed oceanic predators such as endangered blue whales (Balaenoptera musculus). As capital breeders, blue whales migrate vast distances annually between foraging and breeding grounds, and their population fitness depends on synchrony of migration with phenology of prey populations [7, 8]. Despite previous studies of individual-level blue whale vocal behavior via bio-logging [9, 10] and population-level acoustic presence via passive acoustic monitoring , detection of the life history transition from foraging to migration remains challenging. Here, we integrate direct high-resolution measures of individual behavior and continuous broad-scale acoustic monitoring of regional song production (Figure1A) to identify an acoustic signature of the transition from foraging to migration in the Northeast Pacific population. We find that foraging blue whales sing primarily at night, whereas migratory whales sing primarily during the day. The ability to acoustically detect population-level transitions in behavior provides a tool to more comprehensively study the life history, fitness, and plasticity of population behavior in a dispersed, capital breeding population. Real-time detection of this behavioral signal can also inform dynamic management efforts  to mitigate anthropogenic threats to this endangered population [13, 14]).
View details for DOI 10.1016/j.cub.2020.08.105
View details for PubMedID 33007246
Seasonal trends and primary contributors to the low-frequency soundscape of the Cordell Bank National Marine Sanctuary.
The Journal of the Acoustical Society of America
2020; 148 (2): 845
Passive acoustic monitoring of ocean soundscapes can provide information on ecosystem status for those tasked with protecting marine resources. In 2015, the National Oceanic and Atmospheric Administration (NOAA) established a long-term, continuous, low-frequency (10Hz-2kHz) passive acoustic monitoring site in the Cordell Bank National Marine Sanctuary (CBNMS), located offshore of the central United States of America (U.S.) west coast, near San Francisco, CA. The California Current flows southward along the coast in this area, supporting a diverse community of marine animals, including several baleen whale species. Acoustic data analysis revealed that both large vessels and vocalizing baleen whales contribute to the ambient soundscape of the CBNMS. Sound levels fluctuated by month with the highest levels in the fall and lowest levels in the summer. Throughout the year, very low-frequency (10-100Hz) sound levels were most variable. Vessels and whales overlap in their contributions to ambient sound levels within this range, although vessel contributions were more omnipresent, while seasonal peaks were associated with vocalizing whales. This characterization of low-frequency ambient sound levels in the CBNMS establishes initial baselines for an important component of this site's underwater soundscape. Standardized monitoring of soundscapes directly supports NOAA's ability to evaluate and report on conditions within national marine sanctuaries.
View details for DOI 10.1121/10.0001726
View details for PubMedID 32873009
- A comparative analysis of dynamic management in marine and terrestrial systems FRONTIERS IN ECOLOGY AND THE ENVIRONMENT 2020
- The impact of environmental change on small-scale fishing communities: moving beyond adaptive capacity to community response PREDICTING FUTURE OCEANS: SUSTAINABILITY OF OCEAN AND HUMAN SYSTEMS AMIDST GLOBAL ENVIRONMENTAL CHANGE 2019: 271–82
- Geostatistical Analysis of Mesoscale Spatial Variability and Error in SeaWiFS and MODIS/Aqua Global Ocean Color Data JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 2018; 123 (1): 22–39
Coral bleaching response index: a new tool to standardize and compare susceptibility to thermal bleaching
GLOBAL CHANGE BIOLOGY
2016; 22 (7): 2475–88
As coral bleaching events become more frequent and intense, our ability to predict and mitigate future events depends upon our capacity to interpret patterns within previous episodes. Responses to thermal stress vary among coral species; however the diversity of coral assemblages, environmental conditions, assessment protocols, and severity criteria applied in the global effort to document bleaching patterns creates challenges for the development of a systemic metric of taxon-specific response. Here, we describe and validate a novel framework to standardize bleaching response records and estimate their measurement uncertainties. Taxon-specific bleaching and mortality records (2036) of 374 coral taxa (during 1982-2006) at 316 sites were standardized to average percent tissue area affected and a taxon-specific bleaching response index (taxon-BRI) was calculated by averaging taxon-specific response over all sites where a taxon was present. Differential bleaching among corals was widely variable (mean taxon-BRI = 25.06 ± 18.44%, ±SE). Coral response may differ because holobionts are biologically different (intrinsic factors), they were exposed to different environmental conditions (extrinsic factors), or inconsistencies in reporting (measurement uncertainty). We found that both extrinsic and intrinsic factors have comparable influence within a given site and event (60% and 40% of bleaching response variance of all records explained, respectively). However, when responses of individual taxa are averaged across sites to obtain taxon-BRI, differential response was primarily driven by intrinsic differences among taxa (65% of taxon-BRI variance explained), not conditions across sites (6% explained), nor measurement uncertainty (29% explained). Thus, taxon-BRI is a robust metric of intrinsic susceptibility of coral taxa. Taxon-BRI provides a broadly applicable framework for standardization and error estimation for disparate historical records and collection of novel data, allowing for unprecedented accuracy in parameterization of mechanistic and predictive models and conservation plans.
View details for DOI 10.1111/gcb.13276
View details for Web of Science ID 000378722000016
View details for PubMedID 27074334
View details for PubMedCentralID PMC5433437
- Colored dissolved organic matter in shallow estuaries: relationships between carbon sources and light attenuation BIOGEOSCIENCES 2016; 13 (2): 583–95