gov.noaa.nmfs.inport:30917
eng
UTF8
dataset
Access Database, spreadsheets
Southwest Fisheries Science Center
(858)546-7000
8901 La Jolla Shores Dr.
La Jolla
CA
92037
USA
http://swfsc.noaa.gov/
WWW:LINK-1.0-http--link
Website
Website for this organization
information
8:00-16:30
resourceProvider
Moore, Thomas J
(858) 546-7088
(858) 546-7003
8901 La Jolla Shores Dr
La Jolla
CA
92037
thomas.j.moore@noaa.gov
M-F 9:00 - 18:00
pointOfContact
2024-02-29T00:00:00
ISO 19115-2 Geographic Information - Metadata Part 2 Extensions for imagery and gridded data
ISO 19115-2:2009(E)
Sea Lion Diet Data
Sea Lion Diet Data
1981
creation
publication
NOAA/NMFS/EDM
30917
https://www.fisheries.noaa.gov/inport/item/30917
WWW:LINK-1.0-http--link
Full Metadata Record
View the complete metadata record on InPort for more information about this dataset.
information
tableDigital
California sea lions pup and breed at four of the nine Channel Islands in southern California. Since 1981, SWFSC MMTD has been conducting a diet study of sea lions at San Clemente Island (a small rookery) and San Nicolas Island (a large rookery). Information on the diet of sea lions is obtained from analyzing scats (i.e., fecal samples) and spewings (i.e., vomitus) collected at those two rookeries in January (winter), April (spring), July (summer), and October (autumn). Otoliths (a crystalline structure within the ear organ) from fish and beaks (mandibles composed of chitin) from cephalopods are recovered from the samples by washing each sample through sieves of varying mesh size. Otoliths and beaks, which are shaped and sized differently for each species of fish and cephalopod, respectively, are used to identify and enumerate fish, and cephalopods consumed by sea lions. Also, otoliths and beaks are measured for estimating size of prey being consumed by sea lions.
The objectives of the sea lion diet study being conducted are to:
1) Identify prey species being consumed by sea lions in order to determine which are most important to the sea lion population. Prey species are identified by hard parts, such as fish otoliths and squid beaks found in scats. See the recently published Photographic Catalog of California Marine Fish Otoliths: Prey of California Sea Lions (Zalophus californianus).
2) Monitor seasonal, annual, and multi-year variability in consumption of prey species.
3) Determine if dietary changes can be used to signal when the population reaches carrying capacity,
4) Estimate consumption by the sea lion population.
5) Use sea lion diet data as a fishery-independent index of abundance for commercial species of fish and squid.
underDevelopment
Lowry, Mark S
(858) 546-7174
(858) 546-7003
8901 La Jolla Shores Dr
La Jolla
CA
92037
Mark.Lowry@noaa.gov
M-F 6:30 - 16:00
pointOfContact
Moore, Jeff E
(858) 546-7161
(858) 546-7003
8901 La Jolla Shores Dr
La Jolla
CA
92037
Jeff.E.Moore@noaa.gov
M-F 8:00 - 16:00
pointOfContact
Lowry, Mark S
(858) 546-7174
(858) 546-7003
8901 La Jolla Shores Dr
La Jolla
CA
92037
Mark.Lowry@noaa.gov
M-F 6:30 - 16:00
Other data management and support staff are involved with data at the entity level and will be documented there as well.
custodian
asNeeded
California Sea Lion
abundance
diet
ecosystems
habitat
pinniped
rookeries
scats
spewings
theme
autumn
spring
summer
winter
temporal
California
San Clemente Island
San Nicolas Island
United States
place
DOC/NOAA/NMFS/SWFSC > Southwest Fisheries Science Center, National Marine Fisheries Service, NOAA. U.S. Department of Commerce
dataCentre
Global Change Master Directory (GCMD) Data Center Keywords
2017-04-24
publication
8.5
Biological Data
project
InPort
otherRestrictions
Cite As: Southwest Fisheries Science Center, [Date of Access]: Sea Lion Diet Data [Data Date Range], https://www.fisheries.noaa.gov/inport/item/30917.
NOAA provides no warranty, nor accepts any liability occurring from any incomplete, incorrect, or misleading data, or from any incorrect, incomplete, or misleading use of the data. It is the responsibility of the user to determine whether or not the data is suitable for the intended purpose.
otherRestrictions
Access Constraints: FISMA Controls are in place to protect stored data from unauthorized access and/or disclosure.
otherRestrictions
Use Constraints: User must read and fully comprehend the metadata prior to use. Acknowledgement of NOAA SWFSC, as the source from which these data were obtained, in any publications and/or other representations of these data is requested. The user is responsible for the results of any application of these data for other than its intended purpose.
unclassified
NOAA Data Management Plan (DMP)
NOAA/NMFS/EDM
30917
https://www.fisheries.noaa.gov/inportserve/waf/noaa/nmfs/swfsc/dmp/pdf/30917.pdf
WWW:LINK-1.0-http--link
NOAA Data Management Plan (DMP)
NOAA Data Management Plan for this record on InPort.
information
crossReference
eng; US
biota
oceans
San Nicolas Island
-119.58
-119.43
33.21
33.29
January (winter), April (spring), July (summer), October (autumn) | Currentness: Ground Condition
1981
San Clemente Island
-118.61
-118.35
32.797
33.04
January (winter), April (spring), July (summer), October (autumn) | Currentness: Ground Condition
1981
mixed
Mixed
Southwest Fisheries Science Center
(858)546-7000
8901 La Jolla Shores Dr.
La Jolla
CA
92037
http://swfsc.noaa.gov/
WWW:LINK-1.0-http--link
Southwest Fisheries Science Center Website
Website listed for Southwest Fisheries Science Center
information
8:00-16:30
Unknown
distributor
https://swfsc.noaa.gov/mmtd
WWW:LINK-1.0-http--link
https://swfsc.noaa.gov/mmtd
Data are not currently available for download.
download
http://swfsc.noaa.gov/
WWW:LINK-1.0-http--link
http://swfsc.noaa.gov/
spreadsheet and database of scat/diet samples
download
dataset
Representativeness
data representative of animals feeding within distance of the collection sites on Channel Islands
Scat samples collected in field are stored in freezer, then thawed prior to processing. Each scat sample is given a code number, then washed through sieves from which hard-parts (fish otoliths and cephalopod beaks) are collected. Prey identified and enumerated from prey hard-parts. Data entered onto Microsoft Excel worksheets, then transferred to Microsoft Access database. Queries are used to extract data for analysis. "Analyze program" written by Robert Holland summarizes queried data.