Fri, 22 Aug
° °
  • Firstline - TV3 New Zealand

    Firstline

    Weekdays 6am

  • 3 News - TV3 New Zealand

    3 News

    Nightly 6PM

  • Campbell Live - TV3 New Zealand

    Campbell Live

    Weekdays 7.00pm

  • 3rd Degree - TV3 New Zealand

    3rd Degree

    WEDNESDAYS 8.40PM

  • The Paul Henry Show - TV3 New Zealand

    The Paul Henry Show

    Weekdays 10.30pm

  • Three 60 - TV3 New Zealand

    Three 60

    Sundays 9.30am

  • The Nation - TV3 New Zealand

    The Nation

    Sat 9:30am / Sun 10am

Lack of sea ice changes walrus behavior

Thursday 15 Nov 2012 10:39a.m.

Lack of sea ice changes walrus behavior

By Dan Joling

Federal scientists say a lack of summer sea ice is changing the behaviour of Pacific walruses, but they don't know what the effect will be.

Researchers from the US Geological Survey and Russia tagged 251 walruses in the Chukchi Sea off Alaska's northern coast and tracked their movements from 2008-2011. The results were released at a news conference Wednesday in Anchorage.

A release issued ahead of the news conference says the study shows walruses are arriving earlier than normal at northern feeding grounds in the summer. When sea ice melted completely, the walruses hauled out on land and foraged for food closer to shore.

Scientists say they don't yet understand the impact of the new behaviour, but noted possible higher mortality rates for younger walruses from being trampled.

AP

 
comments powered by Disqus