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Summary
Item Identification
Keywords
Physical Location
Data Set Info
Support Roles
Extents
Access Info
Distribution Info
URLs
Tech Environment
Data Quality
Data Management
Lineage
Child Items
Catalog Details

Summary

Short Citation
Alaska Fisheries Science Center, 2024: AFSC/NMML/CCEP: Channel Islands Pinniped Census, https://www.fisheries.noaa.gov/inport/item/28093.
Full Citation Examples

Abstract

The National Marine Mammal Laboratories' California Current Ecosystem Program (AFSC/NOAA) initiated and maintains census programs for California sea lions (Zalophus californianus) and northern fur seals (Callorhinus ursinus) at San Miguel and San Nicolas Islands, California. The program documents annual pup births, pup mortality, and temporal patterns in adult and juvenile presence at San Miguel Island. For both species, the database contains field data on the annual number of live pups and dead pups by location. At San Miguel Island, daily counts of adults, pups, and juveniles in a sample area are also available. The data are used to describe population trends and changes in land resource use among the species.

Distribution Information

  • NODC/NOAA National Centers for Environmental Information (NCEI) web page with links to data download sites.

Access Constraints:

There are no legal restrictions on access to the data. They reside in public domain and can be freely distributed.

Use Constraints:

User must read and fully comprehend the metadata prior to use. Applications or inferences derived from the data should be carefully considered for accuracy. Acknowledgement of NOAA/NMFS/AFSC, as the source from which these data were obtained in any publications and/or other representations of these, data is suggested. Data should be cited as: Melin, S. R., DeLong, R. L., Orr, A. J., Laake, J. L. 2016. California sea lion and northern fur seal censuses conducted at Channel Islands, California by Alaska Fisheries Science Center from 1969-07-31 to 2015-08-08 (NCEI Accession 0145165). NOAA National Centers for Environmental Information.

Child Items

Type Title
Entity NCEI_ Zc Daily Census EACS
Entity NCEI_Cu Daily Census
Entity NCEI_CuProduction
Entity NCEI_ZcProduction

Contact Information

Point of Contact
Sharon Melin
sharon.melin@noaa.gov

Point of Contact
Robert Delong
robert.delong@noaa.gov

Metadata Contact
Tony Orr
tony.orr@noaa.gov

Extents

Geographic Area 1

-120.5° W, -119° E, 34.11° N, 33° S

San Miguel and San Nicolas Islands, of the California Channel Islands

Time Frame 1
1969 - Present

Item Identification

Title: AFSC/NMML/CCEP: Channel Islands Pinniped Census
Short Name: AFSC/NMML/CCEP: Channel Islands Pinniped Census
Status: In Work
Publication Date: 2016
Abstract:

The National Marine Mammal Laboratories' California Current Ecosystem Program (AFSC/NOAA) initiated and maintains census programs for California sea lions (Zalophus californianus) and northern fur seals (Callorhinus ursinus) at San Miguel and San Nicolas Islands, California. The program documents annual pup births, pup mortality, and temporal patterns in adult and juvenile presence at San Miguel Island. For both species, the database contains field data on the annual number of live pups and dead pups by location. At San Miguel Island, daily counts of adults, pups, and juveniles in a sample area are also available. The data are used to describe population trends and changes in land resource use among the species.

Purpose:

The census data are used in models to estimate the size of the populations based on pup production as an index of the population as whole. These data contribute to the NMFS Stock Assessment Reports that are used to monitor the status of marine mammal species under the Marine Mammal Protection Act of 1972.

Other Citation Details:

Cite data as: Melin, S. R., DeLong, R. L., Orr, A. J., Laake, J. L. 2016. California sea lion and northern fur seal censuses conducted at Channel Islands, California by Alaska Fisheries Science Center from 1969-07-31 to 2015-08-08 (NCEI Accession 0145165). NOAA National Centers for Environmental Information.

Keywords

Theme Keywords

Thesaurus Keyword
UNCONTROLLED
None California sea lion
None Census
None Live-pup counts
None Northern fur seal
None Pinniped
None Population
None Pup mortality counts
None Stock Assessment

Spatial Keywords

Thesaurus Keyword
UNCONTROLLED
None California
None California Channel Islands
None San Miguel Island
None San Nicolas Island

Physical Location

Organization: Alaska Fisheries Science Center
City: Seattle
State/Province: WA
Country: USA

Data Set Information

Data Set Scope Code: Data Set
Data Set Type: CSV Files
Maintenance Frequency: Annually
Data Presentation Form: Table (digital)
Entity Attribute Overview:

Tables include information (counts) of California sea lions and northern fur seals during daily censuses (all age/sex classes) and for yearly production estimates (pups only). See "Child Items" for more detailed information.

Distribution Liability:

The user is responsible for the results of any application of this data for other than its intended purpose. NOAA denies liability if the data are misused. Applications or inferences derived from the data should be carefully considered for accuracy. Whereas every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.

Data Set Credit: Alaska Fisheries Science Center

Support Roles

Data Set Credit

CC ID: 239144
Date Effective From: 2015
Date Effective To:
Contact (Person): Delong, Robert
Email Address: robert.delong@noaa.gov

Data Set Credit

CC ID: 239145
Date Effective From: 2015
Date Effective To:
Contact (Person): Laake, Jeff
Email Address: jeff.laake@noaa.gov

Data Set Credit

CC ID: 234732
Date Effective From: 2015
Date Effective To:
Contact (Person): Melin, Sharon
Email Address: sharon.melin@noaa.gov

Data Steward

CC ID: 234733
Date Effective From: 2015
Date Effective To:
Contact (Person): Melin, Sharon
Email Address: sharon.melin@noaa.gov

Distributor

CC ID: 234734
Date Effective From: 2015
Date Effective To:
Contact (Organization): NOAA National Centers for Environmental Information (NCEI)
Email Address: ncei.info@noaa.gov
URL: NCEI Contact Information
Contact Instructions:

https://www.nodc.noaa.gov/

Metadata Contact

CC ID: 234735
Date Effective From: 2015
Date Effective To:
Contact (Person): Orr, Tony
Email Address: tony.orr@noaa.gov

Point of Contact

CC ID: 239146
Date Effective From: 2015
Date Effective To:
Contact (Person): Melin, Sharon
Email Address: sharon.melin@noaa.gov

Point of Contact

CC ID: 234736
Date Effective From: 2015
Date Effective To:
Contact (Person): Delong, Robert
Email Address: robert.delong@noaa.gov

Extents

Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 234737
W° Bound: -120.5
E° Bound: -119
N° Bound: 34.11
S° Bound: 33
Description

San Miguel and San Nicolas Islands, of the California Channel Islands

Extent Group 1 / Time Frame 1

CC ID: 234738
Time Frame Type: Continuing
Start: 1969

Access Information

Security Class: Unclassified
Security Classification System:

None.

Security Handling Description:

None.

Data Access Policy:

The dataset is archived with the NOAA National Centers for Environmental Information (NCEI). Acknowledgement of NOAA/NMFS/AFSC, as the source from which these data were obtained in any publications and/or other representations of these data is suggested. Communication and collaboration with dataset authors is strongly encouraged prior to use.

Data Access Procedure:

The dataset is available for download via the NCEI Ocean Archive System at http://accession.nodc.noaa.gov/0145165.

Data Access Constraints:

There are no legal restrictions on access to the data. They reside in public domain and can be freely distributed.

Data Use Constraints:

User must read and fully comprehend the metadata prior to use. Applications or inferences derived from the data should be carefully considered for accuracy. Acknowledgement of NOAA/NMFS/AFSC, as the source from which these data were obtained in any publications and/or other representations of these, data is suggested. Data should be cited as: Melin, S. R., DeLong, R. L., Orr, A. J., Laake, J. L. 2016. California sea lion and northern fur seal censuses conducted at Channel Islands, California by Alaska Fisheries Science Center from 1969-07-31 to 2015-08-08 (NCEI Accession 0145165). NOAA National Centers for Environmental Information.

Metadata Access Constraints:

None.

Metadata Use Constraints:

Metadata are subject to revision at any time and information within the metadata record should not be cited without author consent. Whereas every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.

Distribution Information

Distribution 1

CC ID: 239216
Download URL: http://data.nodc.noaa.gov/cgi-bin/iso?id=gov.noaa.nodc:0145165
Distributor:
File Name: 0145165
Description:

NODC/NOAA National Centers for Environmental Information (NCEI) web page with links to data download sites.

URLs

URL 1

CC ID: 248913
URL: http://www.afsc.noaa.gov/nmml/species/species_nfs.php
URL Type:
Online Resource
File Resource Format: PDF
Description:

Northern fur seal web page for the National Marine Mammal Laboratory/Alaska Fisheries Science Center/NOAA. Site contains several links including Fur Seal Investigations and Stock Assessment Reports. Count data are summarized biennially in the Fur Seal Investigations.

Technical Environment

Description:

MS Access

Data Quality

Completeness Report:

At San Miguel Island, live pup surveys include the entire colony. Pup mortality surveys do not include areas outside the Point Bennett rookery on the west end of the island. Northern fur seal pup mortality surveys are conducted regularly only in the west half of Adams Cove; the east half is surveyed after 1 August to avoid disturbance to breeding California sea lions. A few years are missing data for Castle Rock, a small offshore colony, because of weather that prevented landing on the rock for counts.

At San Nicolas Island, live and dead pup surveys are conducted only on the southwest end of the island and do not represent the entire San Nicolas colony.

Until 1991, only one or two counts of dead pups were conducted after the live pup count in most years. After 1991, the current methodology of multiple surveys every 15 days was employed. Point Bennett Point (2007) and Northeast Point (2010) were dropped from the pup mortality sample area because of seabird nesting and access problems.

Quality Control Procedures Employed:

Data are edited in the field and entered into the database by the person who collected the data. The data managers make sure all the data are entered in the same format and check and correct for inconsistencies in the data.

Data Management

Have Resources for Management of these Data Been Identified?: No
Approximate Percentage of Budget for these Data Devoted to Data Management: 0
Do these Data Comply with the Data Access Directive?: No
Is Access to the Data Limited Based on an Approved Waiver?: No
If Distributor (Data Hosting Service) is Needed, Please Indicate: Yes
Approximate Delay Between Data Collection and Dissemination: Unknown
If Delay is Longer than Latency of Automated Processing, Indicate Under What Authority Data Access is Delayed:

Data not automatically processed

Actual or Planned Long-Term Data Archive Location: NCEI-MD
Approximate Delay Between Data Collection and Archiving: Unknown
How Will the Data Be Protected from Accidental or Malicious Modification or Deletion Prior to Receipt by the Archive?:

IT Security and Contingency Plan for the system establishes procedures and applies to the functions, operations, and resources necessary to recover and restore data as hosted in the Western Regional Support Center in Seattle, Washington, following a disruption.

Lineage

Lineage Statement:

Pup Birth Census:

1. All pups are counted by two or more observers that walk through the colony, along bluffs or from a blind counting all live pups observed. Counters use hand tallies and record their counts individually in their data books. Observers do not discuss individual counts while in the field.

2. For California sea lions, the entire colony at San Miguel is counted over 4-5 days; at San Nicolas Island a sample area is counted over 2 days. For northern fur seals, all pups are counted on a single survey. When counts span several days, distinct break points in the topography (usually headlands or large breaks in the distribution of animals such that is unlikely that adjacent areas mix) are used to provide markers to avoid counting the same pups on different days.

3. Counts are entered into the Microsoft Access database each night and error checked by the observers. When the census is complete, the average number of pups is computed for the colony or sample area.

Pup Mortality Survey:

1. Pup mortality surveys for California sea lions are conducted in sample areas on San Miguel and San Nicolas Islands. At San Miguel Island, the area is the Point Bennett rookery located on the west end of the island and represents about 45% of the total population. At San Nicolas Island, the area includes the southwest end of the island and represents about 33% of the population. Pup mortality surveys for northern fur seals are conducted in Adams Cove on the mainland of San Miguel throughout the reproductive season and only once on Castle Rock.

2. At San Miguel Island, pup mortality surveys are conducted at 10-15 day intervals beginning the first week of July and ending the middle of August. Surveys conducted after the end of the reproductive season may be at 15 day intervals or up to 1-2 months. At Castle Rock, a single mortality survey is conducted at the same time as the live pup survey for each species. At San Nicolas Island, one to three surveys are conducted over the reproductive season.

3. When surveys are conducted over the season, observers search the sample areas and collect and count each dead pup they encounter. The data includes: island, date, area on the island, species, beach location, substrate type, and carcass condition. The carcasses are then stacked into piles throughout the rookery to avoid counting individual carcasses more than once. In a few years, carcasses were tagged with individual numbers for a mark-recapture study to estimate disappearance rates of carcasses. Each carcass was tagged with two uniquely numbered tags and left on the beach. On the subsequent surveys, the tags and carcass condition were recorded when tagged carcasses were encountered creating a capture history for each carcass over the season.

4. Counts are entered into the Microsoft Access database and edited by the observer that collected the data. The total number of dead pups over the season for each species at each colony provides an index of the annual pup mortality.

Child Items

Rubric scores updated every 15m

Rubric Score Type Title
Entity NCEI_ Zc Daily Census EACS
Entity NCEI_Cu Daily Census
Entity NCEI_CuProduction
Entity NCEI_ZcProduction

Catalog Details

Catalog Item ID: 28093
GUID: gov.noaa.nmfs.inport:28093
Metadata Record Created By: Tony Orr
Metadata Record Created: 2015-10-19 20:06+0000
Metadata Record Last Modified By: SysAdmin InPortAdmin
Metadata Record Last Modified: 2024-10-03 18:16+0000
Metadata Record Published: 2018-11-27
Owner Org: AFSC
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Last Review Date: 2018-11-27
Metadata Review Frequency: 1 Year
Metadata Next Review Date: 2019-11-27