ANIMALS - INDIVIDUAL - COUNTS, SPECIES IDENTIFICATION and ANIMALS - GROUP - BEHAVIOR visual observation data collected in the South Pacific Ocean on the NATHANIEL B. PALMER cruises NBP0103, NBP0104 and others as part of the Southern Ocean GLOBEC p...
NODC Accession 0112819 includes visual observation and biological data collected aboard the NATHANIEL B. PALMER during cruises NBP0103, NBP0104, NBP0202 and NBP0204 in the South Pacific Ocean from 2001-04-29 to 2002-09-09. These data include ANIMALS - INDIVIDUAL - COUNTS, SPECIES IDENTIFICATION and ANIMALS - GROUP - BEHAVIOR.
The following is the text of the abstract provided by BCO-DMO:
Seabird Survey Observations
Time and Yearday can be used in conjunction with alongtrack (http:/jg/serv/globec/soglobec/alongtrack.html0) data to find latitude, longitude and ship's heading information.
Old Dominion University
Center for Coastal Physical Oceanography
Norfolk, Virginia 23529
phone 757 377 0482
e-mail firstname.lastname@example.org (mailto:email@example.com)
SO GLOBEC, BG243 Predator Survey Methods
Seabird abundance and distribution within the SO GLOBEC study area was investigated using daytime and nighttime (using night vision viewers) survey work. We also recorded seal observations made within the transect area. Nighttime surveys were designed to complement daytime surveys.
Strip transects were conducted simultaneously at 300 m and 600 m widths for birds. Surveys were conducted continuously while the ship was underway within the study area and when visibility was >300 m. For strip transects, two observers continuously scanned a 90° area extending the transect distance (300 m and 600 m) to the side and forward along the transect line. Binoculars of 10X and 7X magnification were used to confirm species identifications. The 7X pair of binoculars also included a laser range finder. Ship followers and bird observed to be attracted to the ship were noted at first occurrence. These observations will be down-weighted in the analyses because these individuals may have been attracted to the ship from habitats at a distance from the ship. For each sighting, transect (300 m or 600 m), species, number of birds, behavior, flight direction, and any association with visible physical features, such as ice, were recorded. Distances were measured either by a range finder device as suggested by Heinemann (1981) or by the laser distance finder (when in the ice). Marine mammal sightings within the transect were also recorded.
Surveys were conducted from an outside observation post located on the port bridge wing of the RVIB N.B. Palmer. When it was not feasible to conduct surveys from this observation post, we surveyed from the inside port bridge wing.
Seabird Nighttime Surveys
ITT 200/210 Binocular Night Vision Viewers were used during one half-hour survey periods while on the survey grid. Surveys were a minimum of an hour apart. Observations were made from the bridge wing during NBP0104 and outside, from a dark area on the 01 deck, during NBP0103. Observers scanned back and forth looking for birds. Species and behavior of the bird was recorded for each observation. Observations were not conducted when visibility with the night vision viewer was less than 100 m from the ship.
Heinemann, D. 1981. A rangefinder for pelagic bird censusing. J. Wildl. Manage. 45:489-493.
Broadbilled (Antarctic) Prion
Pachyptila vittata (des.)
Imperial Shag (Blue-eyed Shag)
Antarctic (Brown) Skua
Catharacta (skua) lonnbergi
Cape Petrel ('Pintado Petrel')
Antarctic Fur Seal
Dominican Gull (Kelp Gull)
Southern Giant Petrel
South Polar Skua
unidentified large Skua
Birds or seals observed handling foods or birds attempting to catch food
Birds observed foraging or circling
Birds or seals moving in a direct line in a definite direction
Resting on Ice
Applies to both birds and seals
Resting on Water
Applies to both birds and seals
dipping, possible feeding
Attracted to ship
300 m transect on the port side
600 m transect on the port side
>600 m on port side
Starboard side (No distance limit)
Last updated November 23, 2005; gfh