Population trends of black-browed albatrosses at Heard Island, 1947 - 2001.

• Other Authors: AADC (originator), AU/AADC > Australian Antarctic Data Centre, Australia (resourceProvider)
• Format: Dataset
• Language: unknown
• Published: Australian Ocean Data Network
• Subjects: biota; oceans; BIRDS; EARTH SCIENCE; BIOLOGICAL CLASSIFICATION; ANIMALS/VERTEBRATES; COMMUNITY STRUCTURE; BIOSPHERE; ECOLOGICAL DYNAMICS; COMMUNITY DYNAMICS; POPULATION DYNAMICS; SPECIES/POPULATION INTERACTIONS; SPECIES LIFE HISTORY; ALBATROSSES/PETRELS AND ALLIES; ADULTS; BLACK-BROWED ALBATROSS; CHICKS; DATES; LOCATION; HEARD ISLAND; NESTS; NUMBERS; POPULATION INCREASE; SOUTHERN OCEAN; POPULATION TRENDS; SEASON; VISUAL OBSERVATIONS; FIELD SURVEYS; AMD/AU; CEOS; AMD; OCEAN > SOUTHERN OCEAN > CONTINENT > AUSTRALIA/NEW ZEALAND > AUSTRALIA > GEOGRAPHIC REGION > POLAR; Heard Island; New Zealand; Southern Ocean
• Online Access: https://researchdata.ands.org.au/population-trends-black-1947-2001/686243; https://data.aad.gov.au/metadata/records/ASAC_1219_HIMI_Alb; https://secure3.aad.gov.au/proms/public/projects/report_project_public.cfm?project_no=1219; https://data.aad.gov.au/eds/1452/download; http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=ASAC_1219_HIMI_Alb

The breeding population of the black-browed albatross Thalassarche melanophrys has increased at Heard Island since the first census data were obtained in 1947/1948. Four breeding localities are known, and all populations have increased in the period 1947/1948-2000/2001. The breeding population is estimated to have been approximately 200 pairs in 1947/1948. Based on 2000/2001 census data, the population has increased to a minimum of approximately 600 pairs over the 53 years. Two mechanisms, that of increased prey availability through scavenging discards from trawlers operating within their foraging range, and climatic amelioration, are proposed as hypotheses for this increase. The fields in this dataset are: Season Dates Location Numbers Nests Adults Chicks