Special Seminar Series: The Ecology of Monterey Bay

Managing across multiple scales:
A case study using blue whales
in the Northeast Pacific

Elliott L. Hazen
Environmental Research Division, Southwest Fisheries Science Center, NOAA
Department of Ecology and Evolutionary Biology, UC Santa Cruz

Tuesday, November 7, 2017
Pacific Forum—3:00 p.m.

Highly migratory species can cross ocean basins and oceanic boundaries while traveling from foraging to breeding grounds, making traditional spatial management approaches difficult. Blue whales are seasonal visitors to the California Current System that target a single prey resource, krill, and migrate large distances to find and exploit these ephemeral prey patches. In order to meet their extreme energetic demands, blue whales must interact with their environment at multiple spatial and temporal scales. Thus, successful management requires improved understanding of how fine-scale foraging ecology translates to broad-scale movement patterns and population response. Although up for debate, sub-lethal stressors such as anthropogenic noise and climate change, and lethal factors such as ship strikes, may be limiting recovery and can be difficult to account for in current management strategies.

Our recent research uses an extensive data set of fine-scale accelerometers and broad-scale satellite tags deployed on Northeast Pacific blue whales to examine the energetics of foraging at a fine scale, potential overlap with human risk at a broad scale, and projections of changes in foraging habitat expected under climate change. In addition, we found that local foraging hotspots such as Monterey Bay can depend on the upstream and downstream prey resources. We propose tag data can be extremely valuable for establishing dynamic management approaches to account for daily-to-seasonal ecological processes, to minimize anthropogenic risks, and to ensure management approaches are adaptable to long-term, climate-driven changes in habitat.

Next: Liz Kujawinski, Nov. 14


Data repository
Data policy
What is happening in Monterey Bay today?
Central and Northern California Ocean Observing System
Chemical data
Ocean float data
Slough data
Mooring ISUS measurements
Southern Ocean Data
Mooring data
M1 Mooring Summary Data
M1 Asimet
M1 Download Info
M1 EMeter
M1 Fluorometer (CeNCOOS)
Molecular and genomics data
ESP Web Portal
Seafloor mapping
Upper ocean data
Spatial Temporal Oceanographic Query System (STOQS) Data
Image gallery
Video library
Previous seminars
David Packard Distinguished Lecturers
Research software
Video Annotation and Reference System
System Overview
Annotation Interface
Video Tape User Guide
Video File User Guide
Annotation Glossary
Query Interface
Basic User Guide
Advanced User Guide
Query Glossary
VARS Publications
Oceanographic Decision Support System
MB-System seafloor mapping software
How to Download and Install MB-System
MB-System Documentation
MB-System Announcements
MB-System Announcements (Archive)
MB-System FAQ
MB-System Discussion Lists
MB-System YouTube Tutorials
Matlab scripts: Linear regressions
Introduction to Model I and Model II linear regressions
A brief history of Model II regression analysis
Index of downloadable files
Summary of modifications
Regression rules of thumb
Results for Model I and Model II regressions
Graphs of the Model I and Model II regressions
Which regression: Model I or Model II?
Matlab scripts: Oceanographic calculations
Matlab scripts: Sound velocity
Visual Basic for Excel: Oceanographic calculations
Educational resources
MBARI Summer Internship Program
2017 Summer Interns Blog
Education and Research: Testing Hypotheses (EARTH)
EARTH workshops
2016—New Brunswick, NJ
2015—Newport, Oregon
2016 Satellite workshop—Pensacola, FL
2016 Satellite workshop—Beaufort, NC
EARTH resources
EARTH lesson plans
Lesson plans—published
Lesson plans—development
Lesson drafts—2015
Lesson drafts—2016 Pensacola
Adopt-A-Float Program
Center for Microbial Oceanography: Research and Education (C-MORE) Science Kits
Sample archive