Dataset 108
Seabirds of the Southern and South Indian Ocean (Australian Antarctic Data Centre)
Realm: Marine
Climate: Global
Biome: Multiple ecoregions Central latitude: -61.493307
Central longitude: 105.248799
Duration: 26 years, from 1981 to 2006
Climate: Global
Biome: Multiple ecoregions Central latitude: -61.493307
Central longitude: 105.248799
Duration: 26 years, from 1981 to 2006
122218 records
110 distinct species
Across the time series Pachyptila is the most frequently occurring speciesMethods
NOTE FROM BT MANAGER: This dataset was re-curated for version 2 of BioTIME. Please note that depth reflects the maximum depth of the sea basin in the location where the birds are observed from deck. 108 voyages are retained. Observations for three distance categories (near, medium & far) are pooled. Unit of abundance = IndCountInt, Unit of biomass = NA. SUMMARY FROM SOURCE: The data were collected from research cruises and resupply vessels in the southern Indian Ocean. The majority of the records were collected between October and March. The technique used for collection is that prescribed by the Biological Investigation of Marine Antarctic Systems and Stocks (BIOMASS) Working Party on Bird Ecology. Meteorological and oceanographic data were also collected concurrently. DESCRIPTION FROM AUTHORS: Seabird observations and related environmental data from ships either performing marine science work or taking personnel and cargo to various Antarctic stations. Incidental observations of whales and seals are also noted. Observations are typically made from the bridge out one side of the ship. All observations since the 1980s have been using same protocols - sunrise to sunset. Early projects used hourly snapshots (15 minutes observations) with remainder of hour recording observations as non-snapshot obs. More recent projects use continuous observations that allow to slice the continuous data into bins that match the early protocol.Citation(s)
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