Arctic Walrus Change Mass Haul Out Behavior

SeaDiscovery.com
Thursday, October 10, 2013
Arctic Walrus Haul Out: Photo courtesy of NOAA

NOAA scientists participating in this year's annual Aerial Surveys of Arctic Marine Mammals project in Alaska say they have photographed an area where thousands of Pacific walruses haul out of the ocean on a remote barrier island in the Chukchi Sea, near Pt. Lay.

Scientists say it is difficult to provide an accurate count of the number of walruses densely packed together on coastal haulouts. Using aerial photographs, scientists estimated that this year's haulout at Pt. Lay initially contained 1,500 to 4,000 animals on Sept. 12. The number of walruses had increased to 5,500 to 8,000 when sighted on Sept. 22, and on Sept. 27, biologists estimated that there were approximately 10,000 walruses.

"Large walrus haulouts along the Alaskan coasts in the northeastern Chukchi Sea are a relatively new phenomenon," said Megan Ferguson, marine mammal scientist with NOAA Fisheries. "NOAA's research doesn't typically extend to studying walruses, since this is a species managed by the U.S. Fish and Wildlife Service (USFWS), so you can imagine how exciting it was for us to be able to collect such valuable data for our partner agencies."

In the past, walruses used sea ice habitat offshore in the northern Chukchi Sea as resting platforms in between dives to the bottom of the shallow Chukchi Sea where they feed on their preferred prey, including clams, snails and worms, during the summer and autumn. Due to loss of ice in offshore areas, walruses are foraging in more coastal areas and using beaches for resting (hauling out).

Conserving and restoring protected species such as whales is one of NOAA Fisheries' core missions. The goal of the surveys is to document the distribution and relative abundance of bowhead, gray, minke, fin whales, beluga whales and other marine mammals in areas of potential oil and natural gas exploration, development and production activities in the Alaskan Arctic.

This study is being funded and co-managed by the Bureau of Ocean Energy Management (BOEM)'s environmental studies program.
 

Maritime Reporter November 2014 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

People & Company News

Madsen to Chair Norway’s Research Council Executive Board

Henrik O. Madsen appointed chairman of the executive board of the Research Council of Norway   DNV GL president and CEO Henrik O. Madsen was appointed as chairman

Port of Houston Expecting Record Year

The Port of Houston Authority is expecting 2014 to close as a banner year for the port, with 34 million tons of cargo handled through November, Executive Director

Hapag-Lloyd Completes CSAV Merger Capital Increase

Hapag-Lloyd completed the planned capital increase of EUR 370 million (approximately $452.5 million) as part of the business combination with the Chilean shipping

Environmental

NZ Report: Human Error to Blame for Rena Grounding

New Zealand's Transport Accident Investigation Commission (TAIC) published its final report into the grounding of containership Rena in October 2011. The TAIC’s

Costa Rica Approves APM Terminals Project

Port operator APM Terminals, a unit of Denmark's A.P. Moller-Maersk, said on Friday Costa Rica's environment agency had approved the construction of its Moin Container Terminal project.

NOAA: US to See More Floods from Sea Level Rise

Most of U.S. coast may see 30 or more days a year of floods up to 2 feet above high tides. By 2050, a majority of U.S. coastal areas are likely to be threatened

Marine Science

NOAA: US to See More Floods from Sea Level Rise

Most of U.S. coast may see 30 or more days a year of floods up to 2 feet above high tides. By 2050, a majority of U.S. coastal areas are likely to be threatened

Damen Shipyards Galati wins Dutch Romanian Award

Damen Shipyards Galati has been presented with the Dutch Romanian Business Award for its Corporate Social Responsibility plan, particularly the Group’s community investment initiatives.

Lowrance Renews Insight Genesis College Cup

Lowrance®, a world-leading brand in fishing electronics since 1957— announced today the renewal of its Insight Genesis™ College Cup. In its second year, the

Arctic Operations

Reports on Rosneft Arctic Projects

On December 18, Member of Rosneft Board of Directors, special representative of President of the Russian Federation on international cooperation in the Arctic

BSEE Attends Arctic Council Meeting

The Bureau of Safety and Environmental Enforcement’s (BSEE) David M. Moore recently traveled to Seattle, Wash., for a meeting of the Arctic Council Emergency Prevention,

RV Sikuliaq: Modern Electric Propulsion & Power Management

While ships have used electricity to help power vessels for a long time, new and sophisticated diesel-electric technologies are making serious gains in efficiency,

Ocean Observation

NOAA: US to See More Floods from Sea Level Rise

Most of U.S. coast may see 30 or more days a year of floods up to 2 feet above high tides. By 2050, a majority of U.S. coastal areas are likely to be threatened

DYT Yacht Transport Carries M/V OCEARCH

The 126-foot research vessel M/V OCEARCH is currently making its way from Port Everglades, Florida to Brisbane, Australia on board DYT Yacht Transport’s semisubmersible

Talisman Sinopec Closes North Sea Platform Ahead of Storm

Talisman Sinopec Energy UK has closed its Buchan Alpha platform in the North Sea, the company said on Wednesday, ahead of an expected severe winter storm. The

 
 
Maritime Security Maritime Standards Navigation Offshore Oil Pod Propulsion Salvage Ship Repair Ship Simulators Shipbuilding / Vessel Construction Winch
rss | archive | history | articles | privacy | terms and conditions | contributors | top maritime news | about us | copyright | maritime magazines
maritime security news | shipbuilding news | maritime industry | shipping news | maritime reporting | workboats news | ship design | maritime business

Time taken: 0.3131 sec (3 req/sec)