For Yous Data - Australian Fur Seal Pup Population Is Shrinking

Influenza A virus subtype H5N1 census of annual pup production past times Australian fur seal populations revealed the showtime reduction since species-wide protection was implemented inwards 1975, according to a written report published inwards the open-access mag PLOS ONE past times Rebecca McIntosh of the Phillip Island Nature Parks inwards Victoria, Australia, too colleagues. The written report every bit good shows that the long-term monitoring computer program for the Australian fur seal has effectively tracked population trends over time.

Fur seals [Credit: Phillip Island Nature Parks]

In the marine environment, monitoring the abundance too population trends of a transcend predator tin furnish measures of ecosystem wellness too administration success. Fur seals, Arctocephalus pusillus doriferus, are of import upper trophic degree predators that, inwards Australia, are a protected marine species facing specific challenges related to fisheries too aquaculture management, ecotourism, potential impacts on seabirds, too answer planning for fossil oil spills too other emergencies.

For these reasons, it is of import to obtain accurate information close their abundance too population changes. An ad-hoc monitoring computer program coordinated across multiple stakeholders conducted a range-wide census of alive pups inwards the Austral summers of 2002, 2007 too 2013. In the novel study, McIntosh too colleagues laid upwards out to assess whether the monitoring computer program for the Australian fur seal is achieving its goals of determining pup abundance too estimating population trends.

Fur seal pup [Credit: Phillip Island Nature Parks]

The findings let on that monitoring of the Australian fur seal betwixt the 1970s too 2013 has effectively recorded population changes. The census successfully tracked signs of population recovery upwards to 2007. In addition, the 2013 census identified the showtime pup population decline, estimated to live on 4.2% per twelvemonth since 2007, since species-wide protection was implemented. According to the authors, the written report highlights the importance of regularly assessing long-term monitoring programs too provides valuable information on how to effectively blueprint too ameliorate these programs.

Roland Pick, of Phillip Island Nature Parks, notes: "As wild animals managers it is of import for us to regularly review our monitoring programs to seek the reliability of the information nosotros induce got collected, too every bit good to position enhancements which may attention inwards a greater agreement of whatever population changes detected. We are currently using drone applied scientific discipline too Citizen Science programs at Phillip Island Nature Parks to heighten our monitoring of Seal Rocks every bit the largest breeding colony for the species."

Source: Public Library of Science [September 05, 2018]


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