the national marine mammal laboratory polar ecosystems program ice seal abundance and distribution
DESCRIPTION
Spotted seal. Ringed seal. Bearded seal. Ribbon seal. The National Marine Mammal Laboratory Polar Ecosystems Program Ice Seal Abundance and distribution. Identifying distance for sightings. A. H. X. Distance. Time. Strip transect. ?. What about the area under the helicopter?. - PowerPoint PPT PresentationTRANSCRIPT
The National Marine Mammal LaboratoryPolar Ecosystems Program
Ice Seal Abundance and distribution
Ringed seal Spotted seal
Ribbon sealBearded seal
X
AH
Distance
Time
Identifying distance for sightings
Seal
s co
unte
d as
pro
p. o
f are
a
Distance from track line
Altit
ude
?
What about the area
under the helicopter?
Strip transect
Digital Camera photographs area under helicopter
Image every two secondsGeo-rectified
15674414.448 hrs 55 min11151116.0131 hrs 50 minTotal
4821087.412 hrs 15 min121182.7 19 hrs 33 minHealy 0702
10853327.036 hrs 40 min994933.3112 hrs 17 minHealy 0701
On Effort Distance No. Seals On Effort Distance No. SealsCruise Leg
Shipboard Surveys Helicopter Surveys
Photo: Art HowardPhoto: Janet Warburton
Capture and instrument
Time of day (Local)
Prop
ortio
n of
ani
mal
s ha
uled
out
Hauling out behavior
12:00 23:5906:0000:00 18:00
MayOct.
Ribbon seals through Aug. 2007
Spotted seals through Aug. 2007
CTD tag - Temperature-3.0°C 8.0°C
CTD tag – Conductivity/Salinity20 mS/cm2 40 mS/cm2