SIO Marine Bird and Mammal Survey 2004
David Hyrenbach

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In January 2004, investigators from CUNY-Staten Island (Richard Veit, Marie Caroline Martin) and Duke Marine Lab (David Hyrenbach) embarked on a research cruise spanning through the Madagascar Channel and across the Southern Indian Ocean. The cruise departed from La Reunion Island, and visited Madagascar, the French territories of Mayotte, Crozet, and Kerguelen, and returned to La Reunion. During this cruise, we surveyed marine birds and mammals across a large-scale gradient of ocean productivity and water mass characteristics, spanning from tropical to Antarctic waters (from 12 to 60 degrees S).

This cruise is part of an interdisciplinary project, in collaboration with George Hunt (University of California at Irvine), Henri Weimerskirch (CNRS-CEBC), and Nicolas Metzl (Institut Pierre Simon Laplace), to understand the way oceanographic variability influences the dispersion and community structure of upper-trophic marine predators in the Southern Indian Ocean.

The data presented here are marine bird and mammal counts averaged into contiguous 3-km survey bins. The survey effort data are available separately from the sighting information. This cruise, was funded and supported by the following agencies: the U.S. National Science Foundation Office of Polar Programs (http://www.nsf.gov/home/polar/), the French Polar Institute (http://www.ifremer.fr/ifrtp/), and the French Ocean Indien Service d'Observation (http://www.ipsl.jussieu.fr/services/Observations/fr/OISO.htm).

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Overview

Attributes described below represent those in the original dataset provided by the provider.
Only minimum required attributes are visible and downlodable online. Other attributes may be obtained upon provider's permission unless otherwise noteded below.

Attributes in dataset provided

Attribute (table column)	Description
survey
lineno
cruise
obs_id
date
time
transect
bin
start_lat
start_lon
latitude
longitude
end_lat
end_lon
bin_size
bin_area
weather
visibility
wind_dir
wind_speed
sea_state
swell
pressure
clouds
spcode
species_tsn
species
scientific	Species scientific name.
herdsize
density
oid