A census of breeding Southern Royal Albatross was undertaken at Campbell Island during the period 4 January to 6 February 1996 of the 1995-96 breeding season. A total of 7787 occupied nests was counted. Comparisons of different field census techniques and a measure of the rate of egg loss suggest that 8200-8600 pairs were nesting in the 1995-96 breeding season. The count WDS 23% higher than in January-February 1995, much of which could be explained by some larger survey blocks being counted more thoroughly. Interpretation of population trend data from previous censuses Is difficult because of the likely variability in counting effort between years. Nevertheless, numbers of nests have increased since the first census in January-February 1958, and increased or fluctuated since the 1970s. Accurate counts at study areas (1988-1996) show that numbers are currently increasing.
Abstract:
The results of the second annual survey of entanglement of Antarctic fur seals at Signy Island, South Orkney Islands are reported for the 1997/98 summer season. There were six sightings of seals wearing neck collars of man-made debris, half the number reported in 1996/97. All of the animals involved were juvenile males, the main component of the population seen at Signy Island at this time of year. The prolonged presence of sea ice around the South Orkney Islands probably accounted for the low number of fur seals in total that came ashore during the season. Data are compared with results from a parallel study undertaken at Bird Island, South Georgia in 1997/98 where the number of reported entanglements had also decreased. At Signy Island, fishing net was the most common entangling material (83%) and had increased in occurrence since the previous season. The percentage of entanglements in packaging bands (17%) had decreased since 1996/97. In contrast, the percentage of animals entangled in packaging bands at Bird Island was higher than in recent years and there was a decrease in the incidence of net fragments forming collars. Severe injury was being caused to 67% of seals with neck collars at Signy Island (nil at Bird Island), a slight drop (8%) from 1996/97. The decrease in observed entanglements is encouraging although the prevalence of packaging bands and the high incidence of synthetic line and fishing net highlights the need for CCAMLR Members to take further steps to ensure that vessels are aware of, and comply with, regulations prohibiting the disposal of debris in the southern ocean.
