Entity_Type:
Entity_Type_Label:
Gulf Watch Alaska and Kenai Fjords seasonal study Sea Otter foraging observations 2012-2016
Entity_Type_Definition:
This is a combination of spreadsheet data and Microsoft Access data exported as a comma delimited file. Each record (row) represents one prey item or in the case of an unsuccessful dive, no prey items- retrieved by foraging sea otters.
The unit of analyses is the unique bout which is comprised of one or more dives and each dive is comprised of one or more rows of prey retrieved.
Each record also holds additional information about the focal otter, bout, dive, and/or prey item.
Entity_Type_Definition_Source: producer defined
Attribute:
Attribute_Label: bout_id
Attribute_Definition:
Unique identifier of foraging bout. Unique identifier 1 is assigned to the first observed bout. The next foraging bout, whether the same otter or a different otter receives unique identifier 2, etc. Bout identifier changes every time there is a break in the dive sequence. Every bout within 1 electronic file needs to have a unique bout number. Observers should identify unique bouts on their field data sheets, then data entry should ensure unique bout number within file. In this data set various bout identification schemes have been used in the original spreadsheets and transferred to the compilation.
Attribute_Definition_Source: producer defined
Attribute_Domain_Values:
Unrepresentable_Domain:
Bout identifiers are unique to each actual bout. Typically they are comprised of a concatenation of bout date; observer initials, and a sequential number for the observer for the day.
Attribute:
Attribute_Label: study_cd
Attribute_Definition:
Sea otter foraging data is collected for a variety of studies. This field identifies which study each bout was collected under.
Attribute_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: GWA
Enumerated_Domain_Value_Definition:
Gulf Watch Alaska long term monitoring program, nearshore component, funding from Exxon Valdez Oil Spill Trustee Council, U.S. Geological Survey, and National Park Service
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: KF1
Enumerated_Domain_Value_Definition:
Kenai Fjords Natural Resources Preservation Project study, funding from U.S. Geological Survey
Enumerated_Domain_Value_Definition_Source:
USGS Alaska Science Center sea otter and coastal ecosystem project
Dean, T. A., and J. L. Bodkin. 2011. Protocol narrative for marine nearshore ecosystem monitoring in the Southwest Alaska Network of National Parks: Version 1.0. Natural Resource Report NPS/SWAN/NRR—2011/449. National Park Service, Fort Collins, Colorado.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: PAC
Enumerated_Domain_Value_Definition:
Pacific Nearshore Study, funding from U.S. Geological Survey DOI on the Landscape program
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute:
Attribute_Label: bout_date
Attribute_Definition: Date observations were made
Attribute_Definition_Source: producer defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 20120429
Range_Domain_Maximum: 20160707
Attribute_Units_of_Measure: date
Attribute:
Attribute_Label: start_time
Attribute_Definition:
Time of day (Alaska time) that observer began collecting foraging data for the recorded bout.
Attribute_Definition_Source: producer defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 06:20
Range_Domain_Maximum: 21:50
Attribute_Units_of_Measure: hh:mm Military time
Attribute:
Attribute_Label: end_time
Attribute_Definition:
Time of day (Alaska time) that the observer finished collecting foraging data on focal otter.
Attribute_Definition_Source: producer defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 06:42
Range_Domain_Maximum: 22:02
Attribute_Units_of_Measure: hh:mm Military time
Attribute:
Attribute_Label: obs_lat
Attribute_Definition: latitude of the observer for the bout.
Attribute_Definition_Source: producer defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 54.3493
Range_Domain_Maximum: 60.954532
Attribute_Units_of_Measure: decimal degrees
Attribute:
Attribute_Label: obs_long
Attribute_Definition: longitude of the observer for the bout.
Attribute_Definition_Source: producer defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -154.52106
Range_Domain_Maximum: -145.72238
Attribute_Units_of_Measure: decimal degrees
Attribute:
Attribute_Label: otter_lat
Attribute_Definition:
Focal otter latitude for the bout, may be different for each dive (see dive_otter_lat) but often is one location for an entire bout.
Attribute_Definition_Source: producer defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 58.02512
Range_Domain_Maximum: 60.95178
Attribute_Units_of_Measure: decimal degrees
Attribute:
Attribute_Label: otter_long
Attribute_Definition:
Focal otter longitude for the bout, may be different for each dive (see dive_otter_long) but often is one location for an entire bout.
Attribute_Definition_Source: producer defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -154.52631
Range_Domain_Maximum: -145.72099
Attribute_Units_of_Measure: decimal degrees
Attribute:
Attribute_Label: otter_id
Attribute_Definition:
Unique identifier for an individual study otter. Usually a combination of SO (for sea otter), capture year, and a sequential number.
Attribute_Definition_Source: producer defined
Attribute_Domain_Values:
Unrepresentable_Domain:
The list of specific locations is quite long and will vary by observer. Some are really descriptive and some are more general. It is recommended to use lat longs or region/area for grouping in analyses rather than this field.
Attribute:
Attribute_Label: sex_cd
Attribute_Definition: sex of focal otter
Attribute_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: f
Enumerated_Domain_Value_Definition: Female
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: m
Enumerated_Domain_Value_Definition: Male
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: u
Enumerated_Domain_Value_Definition: Unknown, undetermined
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute:
Attribute_Label: ageclass_cd
Attribute_Definition: Field estimate of ageclass of focal otter
Attribute_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: a
Enumerated_Domain_Value_Definition:
Adult, approximately 3-10 year old otter based on size, grizzle, behavior
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: o
Enumerated_Domain_Value_Definition:
Aged Adult, geriatric otter, approximately older than 10 years based on appearance.
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: j
Enumerated_Domain_Value_Definition:
Juvenile focal otter, older than a weanling or pup, but not adult, approximately 1-3 based on appearance and behavior
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: s
Enumerated_Domain_Value_Definition: Subadult, in this data set essentially the same as a juvenile
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: p
Enumerated_Domain_Value_Definition:
Pup, still dependent and with mother. This age designation is only used if the pup is the focal otter that feeding observations are being collected on. Approximately less than 8 months based on appearance and behavior.
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: u
Enumerated_Domain_Value_Definition: Unknown, undetermined
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute:
Attribute_Label: pupsize_cd
Attribute_Definition:
Does the focal otter have a pup and if so, what is the general size of the pup. This field in other foraging datasets has a null value or NA for male focal otters, but that is not the case in this data set.
Attribute_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: u
Enumerated_Domain_Value_Definition: Unknown, undetermined, or not recorded
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: y
Enumerated_Domain_Value_Definition:
Yes, focal female does have a dependent pup but the age of the pup was not determined or recorded.
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: n
Enumerated_Domain_Value_Definition: No
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: l
Enumerated_Domain_Value_Definition:
Focal otter has a Large pup. Pup size based on visual appearance and behaviors
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: m
Enumerated_Domain_Value_Definition:
Focal otter has a Medium size pup. Pup size estimate based on visual appearance and behavior.
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: s
Enumerated_Domain_Value_Definition:
Focal otter has a Small pup. Pup size estimate based on visual observations and behaviors.
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: d
Enumerated_Domain_Value_Definition: Focal otter has a dead pup.
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute:
Attribute_Label: territorial_male_flg
Attribute_Definition:
Flag indicating if male focal otter is a territorial male or not. Not territorial also includes unknown territorial status. This is not easy to determine in unmarked otters, but can sometimes be deduced by the otter's behavior patterns, such as patrolling, dominance over other males, consorting with females, and checking on all the otters in the area.
Attribute_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 0
Enumerated_Domain_Value_Definition: Not a territorial male or unknown status
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 1
Enumerated_Domain_Value_Definition: Territorial male
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: missing value, no entry
Enumerated_Domain_Value_Definition:
Female otters should not have a flag for territorial male status, so this field should be empty if the otter is a female or unknown sex otter.
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute:
Attribute_Label: region_cd
Attribute_Definition:
Largest Spatial Designation for these analyses. The Gulf Watch Alaska Benthic Monitoring component has three regions where monitoring sites are located.
Attribute_Definition_Source:
Dean, T. A., and J. L. Bodkin. 2011. Protocol narrative for marine nearshore ecosystem monitoring in the Southwest Alaska Network of National Parks: Version 1.0. Natural Resource Report NPS/SWAN/NRR—2011/449. National Park Service, Fort Collins, Colorado.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: PWS
Enumerated_Domain_Value_Definition: Prince William Sound
Enumerated_Domain_Value_Definition_Source:
producer defined
Dean, T. A., and J. L. Bodkin. 2011. Protocol narrative for marine nearshore ecosystem monitoring in the Southwest Alaska Network of National Parks: Version 1.0. Natural Resource Report NPS/SWAN/NRR—2011/449. National Park Service, Fort Collins, Colorado.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: AKP
Enumerated_Domain_Value_Definition: Alaska Peninsula
Enumerated_Domain_Value_Definition_Source:
producer defined
Dean, T. A., and J. L. Bodkin. 2011. Protocol narrative for marine nearshore ecosystem monitoring in the Southwest Alaska Network of National Parks: Version 1.0. Natural Resource Report NPS/SWAN/NRR—2011/449. National Park Service, Fort Collins, Colorado.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: KEP
Enumerated_Domain_Value_Definition: Kenai Peninsula
Enumerated_Domain_Value_Definition_Source:
producer defined
Dean, T. A., and J. L. Bodkin. 2011. Protocol narrative for marine nearshore ecosystem monitoring in the Southwest Alaska Network of National Parks: Version 1.0. Natural Resource Report NPS/SWAN/NRR—2011/449. National Park Service, Fort Collins, Colorado.
Attribute:
Attribute_Label: area_cd
Attribute_Definition: A smaller geographic designation than region
Attribute_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: KATM
Enumerated_Domain_Value_Definition: Katmai National Park and Preserve
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: KEFJ
Enumerated_Domain_Value_Definition: Kenai Fjords National Park
Enumerated_Domain_Value_Definition_Source:
USGS Alaska Science Center sea otter and coastal ecosystem project
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: WPWS
Enumerated_Domain_Value_Definition: western Prince William Sound
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: EPWS
Enumerated_Domain_Value_Definition: eastern Prince William Sound
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: NPWS
Enumerated_Domain_Value_Definition: northern Prince William Sound
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute:
Attribute_Label: site_name
Attribute_Definition:
Smallest designated spatial scale in the Gulf Watch Alaska nearshore monitoring program. For sea otter foraging this represents an area within a 10 kilometer buffer around each rocky intertidal sampling site, more specific location of focal otter than the region or block. In sea otter foraging data sets the site_name field is a combination of site_ID and site_name used in other nearshore data sets. In the sea otter foraging data there is one spatial unit more localized than site, specific_location_txt. Since the protocol calls for this data to be analyzed at the Region level, we have not standardized specific_location_txt names. The Nearshore Monitoring Protocol uses the same site designations for other monitoring components that are used in this dataset.
Attribute_Definition_Source:
producer defined and Dean, T. A., J. L. Bodkin, H.A. Coletti. 2014. Protocol narrative for marine nearshore ecosystem monitoring in the Gulf of Alaska: Version 1.1. Natural Resource Report NPS/SWAN/NRR— 2014/756. National Park Service, Fort Collins, Colorado.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Amalik Bay, AKP_B10_RI_04
Enumerated_Domain_Value_Definition:
One of 5 rocky intertidal sampling sites on the Alaska Peninsula in Block 10 (KATM).
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Kukak Bay, AKP_B10_RI_01
Enumerated_Domain_Value_Definition:
One of 5 rocky intertidal sampling sites on the Alaska Peninsula in Block 10 (KATM).
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Takli Island, AKP_B10_RI_05
Enumerated_Domain_Value_Definition:
One of 5 rocky intertidal sampling sites on the Alaska Peninsula in Block 10 (KATM).
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: KATM New Site, will need to be added to LU table
Enumerated_Domain_Value_Definition:
Designation used for site_name when the focal otter is on the Alaska Peninsula in Block 10 (KATM) but not within a designated site buffer. LU table refers to look-up table in the database.
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Aialik Bay, KEP_B05_RI_01
Enumerated_Domain_Value_Definition:
One of 5 rocky intertidal sampling sites on the Kenai Peninsula in Block 05 (KEFJ).
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: McCarty Fjord, KEP_B05_RI_02
Enumerated_Domain_Value_Definition:
One of 5 rocky intertidal sampling sites on the Kenai Peninsula in Block 05 (KEFJ).
Enumerated_Domain_Value_Definition_Source: USGS Alaska Science Center
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Nuka Bay, KEP_B05_RI_03
Enumerated_Domain_Value_Definition:
One of 5 rocky intertidal sampling sites on the Kenai Peninsula in Block 05 (KEFJ).
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Nuka Passage, KEP_B05_RI_04
Enumerated_Domain_Value_Definition:
One of 5 rocky intertidal sampling sites on the Kenai Peninsula in Block 05 (KEFJ).
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Harris Bay, KEP_B05_RI_05
Enumerated_Domain_Value_Definition:
One of 5 rocky intertidal sampling sites on the Kenai Peninsula in Block 05 (KEFJ).
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: KEFJ New Site, will need to be added to LU table
Enumerated_Domain_Value_Definition:
Designation used for site_name when the focal otter is on the Kenai Peninsula in Block 05 (KEFJ) but not within a designated site buffer.
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Iktua Bay, PWS_B08_RI_02
Enumerated_Domain_Value_Definition:
One of 5 rocky intertidal sampling sites in western Prince William Sound (Block 08 WPWS).
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Whale Bay, PWS_B08_RI_03
Enumerated_Domain_Value_Definition:
One of 5 rocky intertidal sampling sites in western Prince William Sound (Block 08 WPWS).
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Johnson Bay, PWS_B08_RI_04
Enumerated_Domain_Value_Definition:
One of 5 rocky intertidal sampling sites in western Prince William Sound (Block 08 WPWS).
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Herring Bay, PWS_B08_RI_05
Enumerated_Domain_Value_Definition:
One of 5 rocky intertidal sampling sites in western Prince William Sound (Block 08 WPWS).
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: WPWS New Site, will need to be added to LU table
Enumerated_Domain_Value_Definition:
Designation used for site_name when the focal otter is in the Prince William Sound region, western Block 08 (WPWS) but not within a designated site buffer.
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Bettles Bay, PWS_B07_RE_03
Enumerated_Domain_Value_Definition:
One of 5 rocky intertidal sampling sites in northern Prince William Sound (Block 07 NPWS).
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Galena
Enumerated_Domain_Value_Definition:
One of 5 rocky intertidal sampling sites in eastern Prince William Sound (Block 09 EPWS).
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Olsen Island, PWS_B09_RE_03
Enumerated_Domain_Value_Definition:
One of 5 rocky intertidal sampling sites in eastern Prince William Sound (Block 09 EPWS).
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Simpson Bay, PWS_B09_RE_04
Enumerated_Domain_Value_Definition:
One of 5 rocky intertidalsampling sites in northern Prince William Sound (Block 09 EPWS).
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Observation Island, PWS_B09_RE_05
Enumerated_Domain_Value_Definition:
One of 5 rocky intertidal sampling sites in eastern Prince William Sound (Block 09 EPWS).
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute:
Attribute_Label: specific_location_txt
Attribute_Definition:
The smallest spatial scale foraging data is defined at. This is a text field rather than a defined field so observers can be more descriptive.
Attribute_Definition_Source: producer defined
Attribute_Domain_Values:
Unrepresentable_Domain:
The list of specific locations is quite long and will vary by observer. Some are really descriptive and some are more general. It is recommended to use lat longs or region/area for grouping in analyses rather than this field.
Attribute:
Attribute_Label: visibility_cd
Attribute_Definition:
Code for visibility, in this data a term for the observer's confidence in their observations. The term is a subjective, bout specific, assessment of items that affect an observer's ability to collect foraging data: distance of focal otter, elevation of observer, precipitation, surf/surge/chop, is the otter surfacing in kelp or amongst wash rocks, light level and quality, and any other conditions that are impacting the data collection effort.
Attribute_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: ex
Enumerated_Domain_Value_Definition: excellent
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: vg
Enumerated_Domain_Value_Definition: very good
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: go
Enumerated_Domain_Value_Definition: good
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: fa
Enumerated_Domain_Value_Definition: fair
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: po
Enumerated_Domain_Value_Definition: poor
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: un
Enumerated_Domain_Value_Definition: unknown, or not recorded
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute:
Attribute_Label: bout_comment_txt
Attribute_Definition: Text field containing comments about the foraging bout
Attribute_Definition_Source: producer defined
Attribute_Domain_Values:
Unrepresentable_Domain:
Many notes are made here but most common are reasons for ending a bout, information about the focal otter or location
Attribute:
Attribute_Label: dive_otter_lat
Attribute_Definition:
focal otter latitude for the dive, may be different for each dive but often is one location for an entire bout (see otter_lat).
Attribute_Definition_Source: producer defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 58.05479
Range_Domain_Maximum: 60.40598
Attribute_Units_of_Measure: decimal degrees
Attribute:
Attribute_Label: dive_otter_long
Attribute_Definition:
focal otter longitude for the dive, may be different for each dive but often is one location for an entire bout (see otter_long).
Attribute_Definition_Source: producer defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -154.52237
Range_Domain_Maximum: -147.63837
Attribute_Units_of_Measure: decimal degrees
Attribute:
Attribute_Label: dive_num
Attribute_Definition:
Sequential integer number assigned to each dive within a bout. Each bout begins with its own dive number 1. The protocol calls for recording 20 dives within each bout but often the bout ends early because the focal otter leaves, finishes feeding or is interrupted by another animal. Occasionally bouts will have more than 20 dives but it is unclear why the observer chose to continue beyond twenty dives.
Attribute_Definition_Source: producer defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 41
Attribute_Units_of_Measure: each dive
Attribute:
Attribute_Label: dive_time
Attribute_Definition:
Time in seconds spent by focal otter searching for or retrieving prey, underwater or off emergent rocks or in kelp canopy. Dive_time is recorded even if no prey is retrieved.
Attribute_Definition_Source: producer defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 660
Attribute_Units_of_Measure: seconds
Attribute:
Attribute_Label: surface_time
Attribute_Definition:
Surface time, time in seconds that focal otter spends on surface, including time spent handling prey, consuming prey, grooming, interacting with other non-focal otters, moving locations, etc. Surface times in excess of 600 seconds, if not directly associated with feeding, generate the end of the bout.
Attribute_Definition_Source: producer defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 2
Range_Domain_Maximum: 2801
Attribute_Units_of_Measure: seconds
Attribute:
Attribute_Label: success_cd
Attribute_Definition:
Did the focal otter successfully retrieve prey on its dive. In other foraging data sets this is called dive outcome.
Attribute_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: u
Enumerated_Domain_Value_Definition: Unknown, undetermined
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: y
Enumerated_Domain_Value_Definition: Yes
Enumerated_Domain_Value_Definition_Source:
USGS Alaska Science Center sea otter and coastal ecosystem project
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: n
Enumerated_Domain_Value_Definition: No
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: c
Enumerated_Domain_Value_Definition:
carryover, a prey item that was dropped or partially consumed was re-retrieved.
Enumerated_Domain_Value_Definition_Source:
USGS Alaska Science Center sea otter and coastal ecosystem project
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: t
Enumerated_Domain_Value_Definition:
travel, observer decides dive was a travel dive not a foraging dive.
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: x
Enumerated_Domain_Value_Definition:
Non-feeding dive, observer decides dive was not a feeding dive. This often occurs when a focal otter is interrupted by another otter.
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute:
Attribute_Label: dive_comment_txt
Attribute_Definition:
Any comments the observer feels are relevant to the specific dive. There are other comment fields for the bout and individual prey items.
Attribute_Definition_Source: producer defined
Attribute_Domain_Values:
Unrepresentable_Domain: Notes are too varied to reproduce in list form.
Attribute:
Attribute_Label: preytype_cd
Attribute_Definition:
3 letter code for prey item retrieved on successful or carry over dives.
Attribute_Definition_Source: producer defined
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name: Sea otter prey codes
Codeset_Source:
See taxonomy section of this metadata record. preytype_cd "alg" is not in the taxonomy section. "alg" refers to prey that an otter is eating off of a piece of algae.
Attribute:
Attribute_Label: prey_qty
Attribute_Definition: Number of each prey item retrieved
Attribute_Definition_Source: producer defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 106
Attribute_Units_of_Measure: each prey item
Attribute:
Attribute_Label: preysize_cd
Attribute_Definition:
Estimated size, relative to otter paw width, of each prey item. Analysis steps translate the size code to actual millimeters based on measurements of captured otters.
Attribute_Definition_Source:
Bodkin, J. L. 2011. SOP for collecting sea otter forage data - Version 3.1: Southwest Alaska Inventory and Monitoring Network. Natural Resource Report NPS/SWAN/NRR—2011/394. National Park Service, Fort Collins, Colorado.
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 1a
Enumerated_Domain_Value_Definition: smaller than one-half of the paw width of the focal otter
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 1b
Enumerated_Domain_Value_Definition: smaller than one paw width of the focal otter
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 1c
Enumerated_Domain_Value_Definition:
larger than one-half of the paw width of the focal otter but still smaller than one full paw width.
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 2a
Enumerated_Domain_Value_Definition:
smaller than one and one-half times the paw width of the focal otter
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 2b
Enumerated_Domain_Value_Definition: smaller than two paw widths of the focal otter
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 2c
Enumerated_Domain_Value_Definition:
larger than one and one-half times the paw width of the focal otter but still smaller than two full paw widths.
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 3a
Enumerated_Domain_Value_Definition:
smaller than two and one-half times the paw width of the focal otter
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 3b
Enumerated_Domain_Value_Definition: smaller than three paw widths of the focal otter
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 3c
Enumerated_Domain_Value_Definition:
larger than two and one-half times the paw width of the focal otter but still smaller than three full paw widths.
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 4z
Enumerated_Domain_Value_Definition:
larger than three paw widths of the focal otter; observer should try to estimate prey size in centimeters if possible
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 9z
Enumerated_Domain_Value_Definition: unknown prey size
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute:
Attribute_Label: prey_size_cm
Attribute_Definition:
For large prey items, observers may choose to estimate the overall largest size in centimeters of the item. Prey_size_cd should be blank if pre_size_cm is used.
Attribute_Definition_Source: producer defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 12
Range_Domain_Maximum: 80
Attribute_Units_of_Measure: centimeter
Attribute:
Attribute_Label: not_eaten_pct
Attribute_Definition: Proportion of prey not consumed by the focal otter
Attribute_Definition_Source: producer defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.0
Range_Domain_Maximum: 1.0
Attribute_Units_of_Measure: decimal fraction
Attribute:
Attribute_Label: not_eaten_reason_cd
Attribute_Definition:
If Prop_Lost is greater than zero, then a description of why the prey wasn't consumed by the focal otter goes here.
Attribute_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: P
Enumerated_Domain_Value_Definition:
to pup, prey not consumed by the focal otter was given to or taken by the focal otter's pup
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: s
Enumerated_Domain_Value_Definition:
stolen, the prey not consumed by the focal otter was stolen by another otter that is not the pup of the focal otter
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: d
Enumerated_Domain_Value_Definition:
dropped, prey not consumed by the focal otter that is dropped rather than stolen orgiven away
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: c
Enumerated_Domain_Value_Definition:
carryover; the otter retrieved this item on the previous dive and is simply retrieving it again.
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: u
Enumerated_Domain_Value_Definition: Unknown reason why an otter did not fully consume a prey item.
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute:
Attribute_Label: handling_time
Attribute_Definition:
Handling time, the amount of time in seconds that the focal otter uses to manipulate and consume each prey item. Usually equal to surface time unless the otter spends more than 10 seconds grooming or engaging in activity other than prey handling and consumption. Here, HT is set to a blank cell unless the observer records a specific HT on the field data sheet.
Attribute_Definition_Source: producer defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 4
Range_Domain_Maximum: 370
Attribute_Units_of_Measure: seconds
Attribute:
Attribute_Label: prey_comment_txt
Attribute_Definition: observer comments about a specific prey item
Attribute_Definition_Source: producer defined
Attribute_Domain_Values:
Unrepresentable_Domain: Notes are too varied to reproduce in list form.
Entity_and_Attribute_Overview:
Sea otter foraging observations have been used in multiple studies for a variety of reasons. We present the GWA Benthic monitoring SOP for reference here. The data in this dataset may be comparable to other foraging data collected under different SOPs because they have core metrics in common. Discuss options with the authors of such data sets before proceeding.
This dataset consists of observations made of foraging sea otters in Alaska. Observers used Questar field spotting scopes and binoculars to identify prey. Location is noted to the scale of region, sometimes site, and sometimes with coordinates. Date, local time, dive duration, success, prey type, prey size, prey number, handling time and surface time are all recorded. Sites include Katmai National Park, Kenai Fjords, and Prince William Sound. The time interval includes 2012-2016.
Entity_and_Attribute_Detail_Citation:
U.S. Geological Survey Alaska Science Center sea otter and coastal ecosystem project
Dean, T. A., and J. L. Bodkin. 2011. Protocol narrative for marine nearshore ecosystem monitoring in the Southwest Alaska Network of National Parks: Version 1.0. Natural Resource Report NPS/SWAN/NRR—2011/449. National Park Service, Fort Collins, Colorado.
Bodkin, J. L. 2011. SOP for collecting sea otter forage data - Version 3.1: Southwest Alaska Inventory and Monitoring Network. Natural Resource Report NPS/SWAN/NRR—2011/394. National Park Service, Fort Collins, Colorado.