Primary Contact
daniel.linden@noaa.gov
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27 Right Whale Abundance
Page Edit 1
Right Whale Abundance {#narw}
Description: Right Whale
Found in: State of the Ecosystem - Gulf of Maine & Georges Bank (2017+), State of the Ecosystem - Mid-Atlantic (2017+)
Indicator category: Synthesis of published information; Published methods
Contributor(s): Dan Linden
Data steward: Dan Linden, daniel.linden@noaa.gov{.email}
Point of contact: Dan Linden, daniel.linden@noaa.gov{.email}
Public availability statement: Source data are available from the New England Aquarium upon request. Derived data are available here.
Methods
Data sources
The North Atlantic right whale abundance estimates, including calf observations, are published as a technical memorandum every year [e.g., @Linden_narw_pop_2025] using sightings data from the New England Aquarium.
Data extraction
Data were collected from existing reports and validated by report authors.
Data analysis
Analysis for right whale abundance estimates is based on methods by @Pace2017 and @Linden2024_births, as documented most recently by @Linden_narw_pop_2025. Data and code can be found in the following Github repository: NEFSC/PSD-NARW_popsize.
Data processing
Time series of right whale and calf abundance estimates were formatted for inclusion in the ecodata R package using this R code.
Page Edit 2 (if applicable)
NOTE: the following reference needs to be added:
@Article{Linden_narw_pop_2025,
author = {Linden, D.W.},
journal = {NOAA Technical Memorandum NMFS-NE-338},
title = {{Population size estimation of North Atlantic right whales from 1990-2024}},
doi = {10.25923/ha3d-2f70},
year = {2025}
}
Page Edit 3 (if applicable)
No response
Primary Contact
daniel.linden@noaa.gov
Choose a tech doc page to suggest edits
27 Right Whale Abundance
Page Edit 1
Right Whale Abundance {#narw}
Description: Right Whale
Found in: State of the Ecosystem - Gulf of Maine & Georges Bank (2017+), State of the Ecosystem - Mid-Atlantic (2017+)
Indicator category: Synthesis of published information; Published methods
Contributor(s): Dan Linden
Data steward: Dan Linden, daniel.linden@noaa.gov{.email}
Point of contact: Dan Linden, daniel.linden@noaa.gov{.email}
Public availability statement: Source data are available from the New England Aquarium upon request. Derived data are available here.
Methods
Data sources
The North Atlantic right whale abundance estimates, including calf observations, are published as a technical memorandum every year [e.g., @Linden_narw_pop_2025] using sightings data from the New England Aquarium.
Data extraction
Data were collected from existing reports and validated by report authors.
Data analysis
Analysis for right whale abundance estimates is based on methods by @Pace2017 and @Linden2024_births, as documented most recently by @Linden_narw_pop_2025. Data and code can be found in the following Github repository: NEFSC/PSD-NARW_popsize.
Data processing
Time series of right whale and calf abundance estimates were formatted for inclusion in the
ecodataR package using this R code.Page Edit 2 (if applicable)
NOTE: the following reference needs to be added:
@Article{Linden_narw_pop_2025,
author = {Linden, D.W.},
journal = {NOAA Technical Memorandum NMFS-NE-338},
title = {{Population size estimation of North Atlantic right whales from 1990-2024}},
doi = {10.25923/ha3d-2f70},
year = {2025}
}
Page Edit 3 (if applicable)
No response