New!Stay informed with our freeemail newsletter.
advertisement
Science News
from research organizations

Australian fur seal pup population is shrinking

Long-term monitoring program effective in tracking seal populations over time

Date:
September 5, 2018
Source:
PLOS
Summary:
澳大利亚傅小狗年产量的普查r seal populations revealed the first reduction since species-wide protection was implemented in 1975, according to a new study. The study also shows that the long-term monitoring program for the Australian fur seal has effectively tracked population trends over time.
Share:
advertisement

FULL STORY

澳大利亚傅小狗年产量的普查r seal populations revealed the first reduction since species-wide protection was implemented in 1975, according to a study published September 5 in the open-access journalPLOS ONEby Rebecca McIntosh of the Phillip Island Nature Parks in Victoria, Australia, and colleagues. The study also shows that the long-term monitoring program for the Australian fur seal has effectively tracked population trends over time.

In the marine environment, monitoring the abundance and population trends of a top predator can provide measures of ecosystem health and management success. Fur seals,Arctocephalus pusillus doriferus, are important upper trophic level predators that, in Australia, are a protected marine species facing specific challenges related to fisheries and aquaculture management, ecotourism, potential impacts on seabirds, and response planning for oil spills and other emergencies. For these reasons, it is important to obtain accurate information about their abundance and population changes. An ad-hoc monitoring program coordinated across multiple stakeholders conducted a range-wide census of live pups in the Austral summers of 2002, 2007 and 2013. In the new study, McIntosh and colleagues set out to assess whether the monitoring program for the Australian fur seal is achieving its goals of determining pup abundance and estimating population trends.

The findings reveal that monitoring of the Australian fur seal between the 1970s and 2013 has effectively recorded population changes. The census successfully tracked signs of population recovery up to 2007. In addition, the 2013 census identified the first pup population decline, estimated to be 4.2% per year since 2007, since species-wide protection was implemented. According to the authors, the study highlights the importance of regularly assessing long-term monitoring programs and provides valuable information on how to effectively design and improve these programs.

Roland Pick, of Phillip Island Nature Parks, notes: "As wildlife managers it is important for us to regularly review our monitoring programs to examine the reliability of the information we have collected, and also to identify enhancements which may assist in a greater understanding of any population changes detected. We are currently using drone technology and Citizen Science programs at Phillip Island Nature Parks to enhance our monitoring of Seal Rocks as the largest breeding colony for the species."

advertisement


Story Source:

Materials provided byPLOS.注意:内容可能被编辑风格d length.


Journal Reference:

  1. Rebecca R. McIntosh, Steve P. Kirkman, Sam Thalmann, Duncan R. Sutherland, Anthony Mitchell, John P. Y. Arnould, Marcus Salton, David J. Slip, Peter Dann, Roger Kirkwood.Understanding meta-population trends of the Australian fur seal, with insights for adaptive monitoring.PLOS ONE, 2018; 13 (9): e0200253 DOI:10.1371/journal.pone.0200253

Cite This Page:

PLOS. "Australian fur seal pup population is shrinking." ScienceDaily. ScienceDaily, 5 September 2018. /releases/2018/09/180905142039.htm>.
PLOS. (2018, September 5). Australian fur seal pup population is shrinking.ScienceDaily. Retrieved October 24, 2023 from www.koonmotors.com/releases/2018/09/180905142039.htm
PLOS. "Australian fur seal pup population is shrinking." ScienceDaily. www.koonmotors.com/releases/2018/09/180905142039.htm (accessed October 24, 2023).

Explore More
from ScienceDaily

RELATED STORIES