Short Citation:
Southwest Fisheries Science Center, 2021: Acute bottlenecks to the survival of juvenile Pygoscelis penguins,

Item Identification

Title: Acute bottlenecks to the survival of juvenile Pygoscelis penguins
Status: Completed
Creation Date: 2020

This data set contains a zipped file with 8 individual .csv files used to support the analysis of survival bottlenecks presented by Hinke et al.(2020), "Acute bottlenecks to the survival of juvenile Pygoscelis penguins occur immediately after fledging". Data include geographical position estimates from satellite telemetry studies on Adélie (Pygoscelis adeliae), chinstrap (P. antarctica), and gentoo (P. papua) penguins tracked from the Antarctic peninsula region, carcass counts from ship and beach surveys in the study region, fledgling weights, and battery voltage data from telemetry tags.

Multiple datasets are provided. Telemetry data is raw ARGOS data collected from Sirtrak Kiwisat K2G-72A transmitters on Adelie, gentoo, and chinstrap fledlging penguins. Summarized data on cumulative losses of tags from adult birds dervie from Wildlife Computers Spot-275 transmitters. Historical raw data collected by field researchers include fledgling weights and counts of penguin carcass observed at sea and on beaches. Fledgling weights are were collected with spring scales immediatley prior to first departure of fledgling penguins from their natal colony (Adelie and chinstrap) or at a standard age of 85-days after hatch (gentoo). At-sea carcass observations were collected during standard seabird surveys while underway during daylight hours. Beach-cast carcasses of fledgling chinstraps were counted one week after the fledging period at Cape Shirreff, Livingston Island. Recruitment data are based from mark-recapture data and represent proportional returns of individuals from marked cohorts, as updated from a prior report (doi: 10.1007/s00442-007-0781-4)


Estimating when and where survival bottlenecks occur in free-ranging marine predators is critical for effective demographic monitoring and spatial planning. This is particularly relevant to juvenile stages of long-lived species for which direct observations of death are typically not possible. We used satellite telemetry data from fledgling Adélie, chinstrap and gentoo penguins near the Antarctic Peninsula to estimate the spatio-temporal scale of a bottleneck after fledging. Fledglings were tracked up to 106 days over distances up to 2140 km. Cumulative losses of tags increased to 73% within 16 days of deployment, followed by an order-of-magnitude reduction in loss rates thereafter. The timing and location of tag losses were consistent with at-sea observations of penguin carcasses and bioenergetics simulations of mass loss to thresholds associated with low recruitment probability. A bootstrapping procedure is used to assess tag loss due to death versus other factors. Results suggest insensitivity in the timing of the bottleneck and quantify plausible ranges of mortality rates within the bottleneck. The weight of evidence indicates that a survival bottleneck for fledgling penguins is acute, attributable to predation and starvation, and may account for greater than or equal to 33% of juvenile mortality.


This international collaborative study includes data provided by researchers from the the following groups:

1 Antarctic Ecosystem Research Division, Southwest Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, U.S.A.

2 Fisheries Ecology Division, Southwest Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, U.S.A.

3 Departamento Biología de Predadores Tope, Instituto Antártico Argentino, San Martín B1650CSP, Argentina

4 Laboratorios Anexos, Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata, La Plata B1904AMA, Argentina

Other Citation Details:

Hinke JT, Watters GM, Reiss CS, Santora JA, Santos MM. 2020. Data sets supporting "Acute bottlenecks to the survival of juvenile Pygoscelis penguins occur immediately after fledging". Dryad Digital Repository. (doi: 10.5061/dryad.2v6wwpzkh)

Supplemental Information:

Hinke Jefferson T., Watters George M., Reiss Christian S., Santora Jarrod A. and Santos M. Mercedes. 2020. Acute bottlenecks to the survival of juvenile Pygoscelis penguins occur immediately after fledging. Biol. Lett. 16: 20200645.

DOI (Digital Object Identifier): 10.5061/dryad.2v6wwpzkh
DOI Registration Authority: DOI Registration Authority


Theme Keywords

Thesaurus Keyword
None adelie
None archival tag
None brood
None chinstrap
None ecosystem
None egg-laying
None environmental
None fledgling
None gentoo
None mark-recapture
None penguins
None Pygoscelis
None recruitment

Spatial Keywords

Thesaurus Keyword
None Admiralty Bay
None Antarctica
None Bransfield Strait
None Cape Shirreff
None Copacabana
None East Antarctica
None King George Island
None Livingston Island
None South Orkneys
None South Shetlands

Physical Location

Organization: Southwest Fisheries Science Center
City: La Jolla
State/Province: CA
Country: USA

Data Set Information

Data Set Scope Code: Data Set
Data Set Type: flat files
Maintenance Frequency: None Planned
Data Presentation Form: Table (digital)
Distribution Liability:

Any conclusions drawn from the analysis of this information are not the responsibility of NOAA, the National Marine Fisheries Service, US AMLR or its partners.

Data Set Credit: US Antarctic Marine Living Resources Program and collaborators

Support Roles

Data Steward

CC ID: 997808
Date Effective From: 2020
Date Effective To:
Contact (Person): Woodman, Sam
Address: 8901 La Jolla Shores Dr
La Jolla, CA 92037
Email Address:
Phone: 858-546-7138


CC ID: 997809
Date Effective From: 2020
Date Effective To:
Contact (Organization): Southwest Fisheries Science Center (SWFSC)
Address: 8901 La Jolla Shores Dr.
La Jolla, CA 92037
Phone: (858)546-7000
Business Hours: 8:00-16:30

Metadata Contact

CC ID: 997810
Date Effective From: 2020
Date Effective To:
Contact (Person): Hinke, Jefferson
Email Address:
Phone: 858-334-2825

Point of Contact

CC ID: 997811
Date Effective From: 2020
Date Effective To:
Contact (Person): Hinke, Jefferson
Email Address:
Phone: 858-334-2825


Extent Group 1

Extent Description:

FAO Area 48.1, CCAMLR Area 48.1, Antarctic Peninsula, South Shetland Islands, South Orkney Islands

Extent Group 1 / Geographic Area 1

CC ID: 997815
W° Bound: -64
E° Bound: -43
N° Bound: -58
S° Bound: -65

Extent Group 1 / Time Frame 1

CC ID: 998147
Time Frame Type: Range
Start: 1982
End: 2018

Access Information

Security Class: Unclassified
Data Access Policy:

Available online at

Data Access Procedure:

Data Access Constraints:


Data Use Constraints:


Metadata Access Constraints:


Metadata Use Constraints:


Distribution Information

Distribution 1

CC ID: 997818
Download URL:
Distributor: Southwest Fisheries Science Center (SWFSC) (2020 - Present)
File Name:
File Type: Zip



CC ID: 997812
Name: U.S. Antarctic Marine Living Resources (US-AMLR) Program
URL Type:
Online Resource

NOAA, NMFS, SWFSC, Antarctic Ecosystem Research Division

Data Quality

Conceptual Consistency:

Data were collected using agreed, standard field protocols.

Data Management

Have Resources for Management of these Data Been Identified?: No
Approximate Percentage of Budget for these Data Devoted to Data Management: Unknown
Do these Data Comply with the Data Access Directive?: Yes
Is Access to the Data Limited Based on an Approved Waiver?: No
Approximate Delay Between Data Collection and Dissemination: Two years
Actual or Planned Long-Term Data Archive Location: NCEI-CO
Approximate Delay Between Data Collection and Archiving: Two years
How Will the Data Be Protected from Accidental or Malicious Modification or Deletion Prior to Receipt by the Archive?:

Data are stored on a server at the Southwest Fisheries Science Center which has all appropriate access controls, and archived at the NCEI with assigned DOI (see title section for DOI information).


Lineage Statement:

Raw data are collected by researchers at land based stations, entered into data files, reviewed for QA/QC and later on shore-based servers.

Acquisition Information


Instrument 1

CC ID: 997819
Identifier: ARGOS Satellite Transmitter
Instrument / Gear: Instrument
Instrument Type: Transmitter

ARGOS Satellite Transmitter


Platform Unavailable Reason: Not Applicable

Child Items

Rubric scores updated every 15m

Rubric Score Type Title
Entity (ENT) CAS_carcass_counts.csv
Entity (ENT) adult_losses.csv
Entity (ENT) at-sea_carcass_sightings.csv
Entity (ENT) battery_voltage.csv
Entity (ENT) fledge_weights_all_species.csv
Entity (ENT) recruited_weights_adelie.csv
Entity (ENT) recruitment_index.csv
Entity (ENT) tracks.csv

Catalog Details

Catalog Item ID: 63282
Metadata Record Created By: Sam Woodman
Metadata Record Created: 2020-12-07 19:08+0000
Metadata Record Last Modified By: Sam Woodman
Metadata Record Last Modified: 2021-01-07 16:24+0000
Metadata Record Published: 2020-12-16
Owner Org: SWFSC
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Next Review Date: 2021-12-17